JP7568531B2 - Sheets or films, and laminates - Google Patents

Description

The present invention relates to a polycarbonate sheet or film, and a laminate, that has excellent transparency, acid resistance, chemical resistance, surface hardness, flexibility, and adhesion.

Conventionally, methacrylic resins and polycarbonate resins made from bisphenol A (hereafter sometimes referred to as PC-A) have been known as transparent resins, and they are used in a wide range of fields, including electrical and electronic components, optical components, automotive components, and mechanical components, in the form of molded products and films.

Methacrylic acid resins such as polymethyl methacrylate (hereinafter sometimes referred to as PMMA) have high transparency and a high surface hardness (pencil hardness H to 3H), and are widely used as optical materials such as lenses and optical fibers. However, they have a problem in that they have low resistance to everyday chemicals such as sunscreen, limiting their use in applications where they come into direct contact with human hands. Non-Patent Document 1 states that the resistance of acrylic resins to fragrances and suntan creams is problematic.

In recent years, due to concerns over the depletion of petroleum resources and the problem of an increase in carbon dioxide in the air that causes global warming, biomass resources that do not rely on petroleum as a raw material and are carbon neutral, not increasing carbon dioxide even when burned, have attracted a lot of attention, and in the field of polymers, biomass plastics produced from biomass resources have been actively developed. In particular, polycarbonates that mainly use isosorbide as a monomer are excellent in terms of heat resistance, weather resistance, surface hardness, and chemical resistance, and have attracted attention because they have characteristics different from PC-A, and various studies have been conducted on them (Patent Documents 1 and 2). While these isosorbide-based polycarbonates are excellent in heat resistance, impact resistance, and weather resistance, their adhesion to other resins, for example PC-A and PMMA, is extremely poor, and it has usually been difficult to form laminates with them. Their vulnerability to acids and chemicals such as sunscreen cream has also become apparent.

Until now, there has been no sheet or film made from a resin containing two or more types of isosorbide-based polycarbonate that combines transparency, chemical resistance, surface hardness, and flexibility while also exhibiting excellent adhesion to various thermoplastic resins.

JP 2006-36954 A JP 2009-46519 A

"2013 Decorative Film Market Outlook and Manufacturer Strategies" pp. 118-122, Fuji Keizai

The object of the present invention is to provide a polycarbonate sheet or film, and a laminate, that has excellent transparency, acid resistance, chemical resistance, surface hardness, flexibility, and adhesion.

As a result of extensive research, the inventors have discovered that by using a resin composition containing polycarbonate resin (A) containing a certain ratio of a monomer having a specific spiro ring structure and a monomer having a specific heterocyclic structure, and polycarbonate resin (B) containing a certain ratio or more of a monomer having a specific heterocyclic structure, and optionally further containing an acrylic resin, it is possible to achieve excellent transparency, acid resistance, chemical resistance, surface hardness, and flexibility, and to improve adhesion to other thermoplastic resins, thereby completing the present invention.

That is, according to the present invention, the object of the invention is achieved by the following items 1 to 13.

1. A sheet or film formed from a resin composition containing polycarbonate resin (A) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and which contains 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c) among all repeating units, and polycarbonate resin (B) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and which contains less than 5 mol % of units (a), 30 to 100 mol % of units (b), and 0 to 70 mol % of units (c) among all repeating units.

(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer from 0 to 10.)

2. The sheet or film according to the above item 1, wherein the weight ratio of the polycarbonate resin (A) to the polycarbonate resin (B) is 5:95 to 95:5.
3. The sheet or film according to the above item 1 or 2, wherein the resin composition further contains an acrylic resin (C).
4. The sheet or film according to the above item 3, wherein the weight ratio of the total of the polycarbonate resin (A) and the polycarbonate resin (B) to the acrylic resin (C) is 10:90 to 90:10.
5. The sheet or film according to any one of items 1 to 4 above, which has a haze of 2.5% or less.
6. The sheet or film according to any one of items 1 to 5 above, having a thickness of 30 μm or more and 500 μm or less.

7. A laminate formed of a sheet layer formed of a thermoplastic resin (D) and a film layer formed on at least one side of the sheet layer, the film layer being a film layer formed from a resin composition containing: polycarbonate resin (A) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and which contains 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c) in all repeating units; and polycarbonate resin (B) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and which contains less than 5 mol % of units (a), 30 to 100 mol % of units (b), and 0 to 70 mol % of units (c) in all repeating units.

(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer from 0 to 10.)

8. The laminate according to item 7 above, wherein the weight ratio of the polycarbonate resin (A) to the polycarbonate resin (B) is 5:95 to 95:5.
9. The laminate according to item 7 or 8 above, wherein the resin composition further contains an acrylic resin (C).
10. The laminate according to item 9 above, wherein a weight ratio of the total of the polycarbonate resin (A) and the polycarbonate resin (B) to the acrylic resin (C) is 10:90 to 90:10.
11. The laminate according to any one of items 7 to 10 above, which has a haze of 2.5% or less.
12. The laminate according to any one of items 7 to 11 above, wherein the thickness of the film layer is 25 μm or more and 250 μm or less.
13. The laminate according to any one of items 7 to 12 above, wherein the sheet layer has a thickness of 100 μm or more and 500 μm or less.

The present invention uses a resin composition containing a polycarbonate resin (A) containing a specific monomer having a spiro ring structure and a specific monomer having a heterocyclic ring structure at a certain ratio, a polycarbonate resin (B) containing a specific monomer having a heterocyclic ring structure at a certain ratio or more, and further containing an acrylic resin if desired, and a sheet or film formed from the resin composition or a laminate having a layer made of the resin composition and a layer made of another thermoplastic resin can provide a product excellent in transparency, acid resistance, chemical resistance, surface hardness, flexibility, and adhesion. Therefore, the industrial effect achieved is exceptional.

The present invention is described in detail below.

(Aspect 1 of the present invention)
The present invention provides a sheet or film formed from a resin composition containing: polycarbonate resin (A) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c); and polycarbonate resin (B) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain less than 5 mol % of units (a), 30 to 100 mol % of units (b), and 0 to 70 mol % of units (c).

(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer from 0 to 10.)

(Polycarbonate resin (A))
The polycarbonate resin (A) used in the present invention is a polycarbonate resin (A) whose repeating units are composed of units (a) represented by the above formula (1), units (b) represented by the above formula (2), and carbonate units (c) other than units (a) and units (b), and contains, among all repeating units, 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c).

The unit (a) represented by the above formula (1) is derived from a diol having a specific spiro ring structure. Examples of diol compounds having such a spiro ring structure include alicyclic diol compounds such as 3,9-bis(2-hydroxyethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane, 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane, 3,9-bis(2-hydroxy-1,1-diethylethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane, and 3,9-bis(2-hydroxy-1,1-dipropylethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane.

Preferably, 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro(5.5)undecane is used.

The polycarbonate resin (A) used in the resin composition of the present invention contains 5 to 85 mol %, preferably 10 to 80 mol %, more preferably 15 to 70 mol %, even more preferably 20 to 60 mol %, and particularly preferably 20 to 50 mol % of the repeating units of the unit (a) represented by the above formula (1). When the unit (a) is within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (B) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility. In addition, the polymerization of the polycarbonate resin is easy without crystallization during polymerization, which is preferable. Furthermore, when an acrylic resin (C) is used, the resin composition does not phase separate during extrusion or molding of the resin composition with the acrylic resin, which is preferable because the resin composition does not become cloudy.

The unit (b) represented by the above formula (2) is derived from a diol having a specific ether group (having a heterocyclic structure). Examples of such diols include units (b-1), (b-2), and (b-3) represented by the following formulas, which are stereoisomeric.

These are ether diols derived from carbohydrates, and can also be obtained from biomass in nature, making them one of the so-called renewable resources. The repeating units (b-1), (b-2) and (b-3) are called isosorbide, isomannide and isoidide, respectively. Isosorbide is obtained by hydrogenating D-glucose obtained from starch, followed by dehydration. Other ether diols can also be obtained by similar reactions, except for the starting material.

Among isosorbide, isomannide, and isoidide, the repeating units derived from isosorbide (1,4;3,6-dianhydro-D-sorbitol) are particularly preferred due to their ease of production and excellent heat resistance.

The polycarbonate resin (A) used in the resin composition of the present invention contains 15 to 95 mol %, preferably 20 to 90 mol %, more preferably 30 to 85 mol %, even more preferably 40 to 80 mol %, and particularly preferably 50 to 80 mol % of the repeating units of the unit (b) represented by the above formula (2). When the unit (b) is within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (B) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

The polycarbonate resin (A) used in the resin composition of the present invention may contain carbonate units (c) other than units (a) and units (b).

The carbonate unit (c) is preferably a carbonate unit (c) derived from at least one compound selected from the group consisting of an aliphatic diol compound, an alicyclic diol compound, and an aromatic dihydroxy compound. In addition, from the standpoint of surface hardness and weather resistance, the carbonate unit (c) is preferably a carbonate unit (c) derived from at least one compound selected from the group consisting of an aliphatic diol compound and an alicyclic diol compound.

Aliphatic diol compounds include 1,3-propanediol, 1,4-butanediol, 1,5-pentanediol, 1,6-hexanediol, 1,8-octanediol, 1.9-nonanediol, 1,10-decanediol, 1,12-dodecanediol, 2-methyl-1,3-propanediol, neopentyl glycol, 3-methyl-1,5-pentanediol, 2-n-butyl-2-ethyl-1,3-propanediol, and 2,2-diethyl-1,3-propanediol. , 2,4-diethyl-1,5-pentanediol, 1,2-hexane glycol, 1,2-octyl glycol, 2-ethyl-1,3-hexanediol, 2,3-diisobutyl-1,3-propanediol, 2,2-diisoamyl-1,3-propanediol, 2-methyl-2-propyl-1,3-propanediol, etc., and 1,8-octanediol, 1.9-nonanediol, 1,10-decanediol, and 1,12-dodecanediol are preferably used.

Examples of alicyclic diol compounds include cyclohexanediols such as 1,2-cyclohexanediol, 1,3-cyclohexanediol, 1,4-cyclohexanediol, and 2-methyl-1,4-cyclohexanediol; cyclohexanedimethanols such as 1,2-cyclohexanedimethanol, 1,3-cyclohexanedimethanol, and 1,4-cyclohexanedimethanol; norbornane dimethanols such as 2,3-norbornane dimethanol and 2,5-norbornane dimethanol; tricyclodecane dimethanol, pentacyclopentadecanedimethanol, 1,3-adamantanediol, 2,2-adamantanediol, decalin dimethanol, and 2,2,4,4-tetramethyl-1,3-cyclobutanediol; and cyclohexane dimethanols are preferably used.

Examples of aromatic dihydroxy compounds include α,α'-bis(4-hydroxyphenyl)-m-diisopropylbenzene (bisphenol M), 9,9-bis(4-hydroxy-3-methylphenyl)fluorene, 1,1-bis(4-hydroxyphenyl)cyclohexane, 1,1-bis(4-hydroxyphenyl)-3,3,5-trimethylcyclohexane, 4,4'-dihydroxy-3,3'-dimethyldiphenyl sulfide, bisphenol A, 2,2-bis(4-hydroxy-3-methylphenyl)propane (bisphenol C), 2,2-bis(4-hydroxyphenyl)-1,1,1,3,3,3-hexafluoropropane (bisphenol AF), and 1,1-bis(4-hydroxyphenyl)decane, with bisphenol A being preferred.

The polycarbonate resin (A) used in the resin composition of the present invention contains carbonate units (c) in a repeating unit amount of 0 to 80 mol %, preferably 1 to 60 mol %, more preferably 2 to 40 mol %, even more preferably 3 to 20 mol %, and particularly preferably 4 to 10 mol % of the total repeating units. When the unit (c) is within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (B) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

(Polycarbonate resin (B))
The polycarbonate resin (B) used in the resin composition of the present invention is a polycarbonate resin whose repeating units consist of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), in which, among all the repeating units, units (a) account for less than 5 mol %, units (b) are contained in an amount of 30 to 100 mol %, and units (c) are contained in an amount of 0 to 70 mol %.

(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer from 0 to 10.)

The unit (a) represented by the above formula (1) is derived from a diol having a specific spiro ring structure. Examples of diol compounds having such a spiro ring structure include the same compounds as those described above.

The polycarbonate resin (B) used in the resin composition of the present invention has repeating units represented by the above formula (1) in which the repeating units (a) account for less than 5 mol % of the total repeating units, preferably 3 mol % or less, more preferably 1 mol % or less, and particularly preferably does not substantially contain units (a). When the units (a) are within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (A) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

The unit (b) represented by the above formula (2) is derived from a diol having a specific ether group (having a heterocyclic structure). Examples of such diols include the same compounds as those described above.

The polycarbonate resin (B) used in the resin composition of the present invention contains 30 to 100 mol %, preferably 50 to 99 mol %, more preferably 60 to 98 mol %, even more preferably 70 to 97 mol %, and particularly preferably 80 to 96 mol % of the repeating units (b) represented by the above formula (2). When the unit (b) is within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (A) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

The polycarbonate resin (B) used in the resin composition of the present invention may contain carbonate units (c) other than units (a) and units (b).

The carbonate unit (c) is preferably a carbonate unit (c) derived from at least one compound selected from the group consisting of an aliphatic diol compound, an alicyclic diol compound, and an aromatic dihydroxy compound. In addition, from the standpoint of surface hardness and weather resistance, the carbonate unit (c) is preferably a carbonate unit (c) derived from at least one compound selected from the group consisting of an aliphatic diol compound and an alicyclic diol compound.

Examples of the aliphatic diol compound, alicyclic diol compound, and aromatic dihydroxy compound include the same compounds as those described above.

The polycarbonate resin (B) used in the resin composition of the present invention contains carbonate units (c) in a repeating unit amount of 0 to 70 mol %, preferably 1 to 50 mol %, more preferably 2 to 40 mol %, even more preferably 3 to 30 mol %, and particularly preferably 4 to 20 mol % of the total repeating units. When the unit (c) is within the above range, the sheet or film formed from the resin composition blended with the polycarbonate resin (A) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

(Production method of polycarbonate resin)
The polycarbonate resins (A) and (B) used in the present invention are produced by a reaction means known per se for producing ordinary polycarbonate resins, for example, a method of reacting a diol component with a carbonate precursor such as a carbonic acid diester. The basic means for these production methods will now be briefly described.

The transesterification reaction using a carbonic acid diester as a carbonate precursor is carried out by heating and stirring a specified ratio of diol components with a carbonic acid diester in an inert gas atmosphere, and distilling off the resulting alcohol or phenols. The reaction temperature varies depending on the boiling point of the resulting alcohol or phenols, but is usually in the range of 120 to 300°C. The reaction is completed by reducing the pressure from the beginning and distilling off the resulting alcohol or phenols. If necessary, a terminal terminator, antioxidant, etc. may also be added.

The carbonic acid diester used in the transesterification reaction may be an ester of an aryl group or an aralkyl group having 6 to 12 carbon atoms, which may be substituted. Specific examples include diphenyl carbonate, ditolyl carbonate, bis(chlorophenyl) carbonate, and m-cresyl carbonate. Of these, diphenyl carbonate is particularly preferred. The amount of diphenyl carbonate used is preferably 0.97 to 1.10 moles, more preferably 1.00 to 1.06 moles, per mole of the total of the dihydroxy compounds.

In the melt polymerization method, a polymerization catalyst can be used to increase the polymerization rate. Examples of such a polymerization catalyst include alkali metal compounds, alkaline earth metal compounds, nitrogen-containing compounds, and metal compounds.

As such compounds, organic acid salts, inorganic salts, oxides, hydroxides, hydrides, alkoxides, quaternary ammonium hydroxides, etc. of alkali metals or alkaline earth metals are preferably used, and these compounds can be used alone or in combination.

Examples of alkali metal compounds include sodium hydroxide, potassium hydroxide, cesium hydroxide, lithium hydroxide, sodium bicarbonate, sodium carbonate, potassium carbonate, cesium carbonate, lithium carbonate, sodium acetate, potassium acetate, cesium acetate, lithium acetate, sodium stearate, potassium stearate, cesium stearate, lithium stearate, sodium borohydride, sodium benzoate, potassium benzoate, cesium benzoate, lithium benzoate, disodium hydrogen phosphate, dipotassium hydrogen phosphate, dilithium hydrogen phosphate, disodium phenylphosphate, disodium, dipotassium, dicesium, and dilithium salts of bisphenol A, and sodium, potassium, cesium, and lithium salts of phenol.

Examples of alkaline earth metal compounds include magnesium hydroxide, calcium hydroxide, strontium hydroxide, barium hydroxide, magnesium carbonate, calcium carbonate, strontium carbonate, barium carbonate, magnesium diacetate, calcium diacetate, strontium diacetate, barium diacetate, barium stearate, etc.

Examples of nitrogen-containing compounds include quaternary ammonium hydroxides having alkyl or aryl groups, such as tetramethylammonium hydroxide, tetraethylammonium hydroxide, tetrapropylammonium hydroxide, tetrabutylammonium hydroxide, and trimethylbenzylammonium hydroxide. Other examples include tertiary amines, such as triethylamine, dimethylbenzylamine, and triphenylamine, and imidazoles, such as 2-methylimidazole, 2-phenylimidazole, and benzimidazole. Other examples include bases or basic salts, such as ammonia, tetramethylammonium borohydride, tetrabutylammonium borohydride, tetrabutylammonium tetraphenylborate, and tetraphenylammonium tetraphenylborate.

Examples of metal compounds include zinc aluminum compounds, germanium compounds, organotin compounds, antimony compounds, manganese compounds, titanium compounds, zirconium compounds, etc. These compounds may be used alone or in combination of two or more.

The amount of these polymerization catalysts used is selected from the range of preferably 1×10 ⁻⁹ to 1×10 ⁻² equivalents, preferably 1×10 ⁻⁸ to 1×10 ⁻⁵ equivalents, more preferably 1×10 ⁻⁷ to 1×10 ⁻³ equivalents per mole of the diol component.

A catalyst deactivator can also be added in the later stages of the reaction. Known catalyst deactivators are effectively used as catalyst deactivators, and among these, ammonium salts and phosphonium salts of sulfonic acid are preferred. Furthermore, salts of dodecylbenzenesulfonic acid such as tetrabutylphosphonium salt of dodecylbenzenesulfonic acid, and salts of paratoluenesulfonic acid such as tetrabutylammonium salt of paratoluenesulfonic acid are preferred.

As the ester of sulfonic acid, methyl benzenesulfonate, ethyl benzenesulfonate, butyl benzenesulfonate, octyl benzenesulfonate, phenyl benzenesulfonate, methyl paratoluenesulfonate, ethyl paratoluenesulfonate, butyl paratoluenesulfonate, octyl paratoluenesulfonate, phenyl paratoluenesulfonate, etc. are preferably used. Among them, tetrabutylphosphonium dodecylbenzenesulfonate is most preferably used.

When at least one polymerization catalyst selected from alkali metal compounds and/or alkaline earth metal compounds is used, the amount of these catalyst deactivators used is preferably 0.5 to 50 moles per mole of the catalyst, more preferably 0.5 to 10 moles, and even more preferably 0.8 to 5 moles.

(Specific viscosity: η _SP )
The specific viscosity (η _SP ) of the polycarbonate resin (A) and the polycarbonate resin (B) is preferably in the range of 0.2 to 1.5. When the specific viscosity is in the range of 0.2 to 1.5, the strength and moldability of molded products such as films are good. It is more preferably 0.25 to 1.2, even more preferably 0.3 to 1.0, and particularly preferably 0.3 to 0.5.

The specific viscosity in the present invention is determined from a solution in which 0.7 g of polycarbonate resin is dissolved in 100 ml of methylene chloride at 20° C. using an Ostwald viscometer.
Specific viscosity (η _SP )=(t−t ₀ )/t ₀
[ _t0 is the number of seconds that methylene chloride falls, and t is the number of seconds that the sample solution falls]
The specific viscosity can be measured, for example, as follows: First, polycarbonate resin is dissolved in methylene chloride in an amount 20 to 30 times its weight, and the soluble matter is collected by filtration through Celite. The solution is then removed and the mixture is thoroughly dried to obtain a solid that is soluble in methylene chloride. 0.7 g of the solid is dissolved in 100 ml of methylene chloride, and the specific viscosity at 20°C is determined using an Ostwald viscometer.

(Acrylic Resin (C))
In the present invention, the resin composition may further contain an acrylic resin (C). A sheet or film formed from a resin composition containing the acrylic resin (C) has an excellent balance of transparency, acid resistance, chemical resistance, surface hardness, and flexibility.

The acrylic resin used in the resin composition of the present invention may be any known acrylic resin. For example, the following compounds may be used as monomers for acrylic resins: Methyl methacrylate, methacrylic acid, acrylic acid, benzyl (meth)acrylate, n-butyl (meth)acrylate, i-butyl (meth)acrylate, t-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, glycidyl (meth)acrylate, hydroxypropyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, 2-ethoxyethyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, norbornyl (meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate, Examples include acrylic (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-(meth)acryloyloxyethyl succinate, 2-(meth)acryloyloxyethyl maleate, 2-(meth)acryloyloxyethyl phthalate, 2-(meth)acryloyloxyethyl hexahydrophthalate, pentamethylpiperidyl (meth)acrylate, tetramethylpiperidyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, cyclopentyl methacrylate, cyclopentyl acrylate, cyclohexyl methacrylate, cyclohexyl acrylate, cycloheptyl methacrylate, cycloheptyl acrylate, cyclooctyl methacrylate, cyclooctyl acrylate, cyclododecyl methacrylate, and cyclododecyl acrylate. These may be used by polymerizing either alone or in combination of two or more.

In particular, it is preferable to include methyl methacrylate and methyl acrylate. It is preferable to include 50 to 99 mol% of methyl methacrylate and 1 to 50 mol% of methyl acrylate as monomer components, more preferably 60 to 99 mol% of methyl methacrylate and 1 to 40 mol% of methyl acrylate, and even more preferably 70 to 99 mol% of methyl methacrylate and 1 to 30 mol% of methyl acrylate. If the monomer component contains more than 99 mol% methyl methacrylate, the thermal decomposition resistance is poor and molding defects such as silver may occur during molding. If the monomer component contains less than 50 mol% methyl methacrylate, the heat distortion temperature may decrease.

(Method for producing a resin composition containing a polycarbonate resin and an acrylic resin)
The resin composition in the present invention is preferably prepared by blending polycarbonate resin (A), polycarbonate resin (B), and optionally acrylic resin (C) in a molten state. As a method for blending in a molten state, an extruder is generally used, and the molten resin is kneaded at a molten resin temperature of 200 to 320°C, preferably 220 to 300°C, and more preferably 230 to 290°C, and then pelletized. This provides pellets of a resin composition in which both resins are uniformly blended. The configuration of the extruder, the configuration of the screw, and the like are not particularly limited. If the molten resin temperature in the extruder exceeds 320°C, the resin may become discolored or may undergo thermal decomposition. On the other hand, if the resin temperature is below 200°C, the resin viscosity may be too high and the extruder may be overloaded.

(Weight ratio)
The weight ratio of the polycarbonate resin (A) and the polycarbonate resin (B) can be arbitrarily mixed. It is preferably in the range of 5:95 to 95:5 (weight ratio), more preferably in the range of 10:90 to 90:10 (weight ratio), even more preferably in the range of 20:80 to 85:15 (weight ratio), particularly preferably in the range of 30:70 to 80:20 (weight ratio), and most preferably in the range of 40:60 to 80:20 (weight ratio). If the component of the polycarbonate resin (A) is less than 5% by weight, the transparency and surface hardness may decrease, and if it exceeds 95% by weight, the acid resistance, chemical resistance and surface hardness may decrease.

The mixture of the polycarbonate resin (A) and the polycarbonate resin (B) and the acrylic resin (C) can be mixed at any weight ratio. The weight ratio is preferably in the range of 10:90 to 90:10 (weight ratio), more preferably in the range of 20:80 to 80:20 (weight ratio), even more preferably in the range of 30:70 to 70:30 (weight ratio), particularly preferably in the range of 40:60 to 65:35 (weight ratio), and most preferably in the range of 50:50 to 60:40 (weight ratio). If the polycarbonate component is less than 5% by weight, the acid resistance, chemical resistance, and flexibility may be poor. Also, if the acrylic component is less than 5% by weight, the surface hardness may be poor. By setting the weight ratio within the above range, a resin composition having excellent transparency, heat resistance, acid resistance, chemical resistance, surface hardness, flexibility, and adhesion to other thermoplastic resins can be obtained.

(Glass transition temperature: Tg)
The resin composition in the present invention has a single glass transition temperature (Tg), and the glass transition temperature (Tg) is preferably 90 to 150° C., more preferably 100 to 140° C., and further preferably 110 to 130° C. If the Tg is within the above range, the heat resistance stability and moldability are good, which is preferable.

The glass transition temperature (Tg) is measured at a heating rate of 20° C./min using a Model 2910 DSC manufactured by TA Instruments Japan Co., Ltd. In the present invention, a single glass transition temperature (Tg) means that when the glass transition temperature is measured using a differential scanning calorimeter (DSC) at a heating rate of 20° C./min in accordance with JIS K7121, only one inflection point indicating the glass transition temperature appears.

Generally speaking, when a polymer blend composition has a single glass transition temperature, it means that the mixed resins are in a compatible state on the nanometer order (molecular level), and the system can be considered compatible.

(Pencil hardness)
The resin composition in the present invention preferably has a pencil hardness of HB or more, more preferably F or more. In terms of excellent scratch resistance, it is even more preferable that it is H or more. The pencil hardness is 4H or less and has sufficient function. The pencil hardness can be increased by increasing the weight ratio of the acrylic resin. In the present invention, the pencil hardness refers to a hardness at which no scratch marks remain even when the resin of the present invention is rubbed with a pencil having a specific pencil hardness, and it is preferable to use the pencil hardness used in the surface hardness test of the coating film that can be measured according to JIS K-5600 as an index. The pencil hardness becomes softer in the order of 9H, 8H, 7H, 6H, 5H, 4H, 3H, 2H, H, F, HB, B, 2B, 3B, 4B, 5B, and 6B, with the hardest being 9H and the softest being 6B.

(Additives)
The resin composition used in the present invention may contain additives such as a heat stabilizer, a plasticizer, a light stabilizer, a polymerized metal deactivator, a flame retardant, a lubricant, an antistatic agent, a surfactant, an antibacterial agent, an ultraviolet absorber, a release agent, a colorant, and an impact modifier depending on the application and necessity.

(Heat stabilizer)
The resin composition used in the present invention preferably contains a heat stabilizer in order to suppress the molecular weight reduction and the deterioration of the color tone during extrusion and molding. Examples of the heat stabilizer include phosphorus-based heat stabilizers, phenol-based heat stabilizers, and sulfur-based heat stabilizers, and these can be used alone or in combination of two or more. In particular, since the ether diol residue of the unit (a-1) is easily deteriorated by heat and oxygen and colored, it is preferable to contain a phosphorus-based heat stabilizer as the heat stabilizer. It is preferable to blend a phosphite compound as the phosphorus-based stabilizer. Examples of the phosphite compound include pentaerythritol-type phosphite compounds, phosphite compounds that react with dihydric phenols and have a cyclic structure, and phosphite compounds having other structures.

Specific examples of the pentaerythritol-type phosphite compounds include distearyl pentaerythritol diphosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite, bis(2,6-di-tert-butyl-4-ethylphenyl)pentaerythritol diphosphite, phenyl bisphenol A pentaerythritol diphosphite, bis(nonylphenyl)pentaerythritol diphosphite, dicyclohexyl pentaerythritol diphosphite, and the like. Among these, distearyl pentaerythritol diphosphite and bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite are preferred.

Examples of the phosphite compounds having a cyclic structure upon reaction with the above dihydric phenols include 2,2'-methylenebis(4,6-di-tert-butylphenyl)(2,4-di-tert-butylphenyl)phosphite, 2,2'-methylenebis(4,6-di-tert-butylphenyl)(2-tert-butyl-4-methylphenyl)phosphite, 2,2'-methylenebis(4-methyl-6-tert-butylphenyl)(2-tert-butyl-4-methylphenyl)phosphite, phosphite, 2,2'-ethylidenebis(4-methyl-6-tert-butylphenyl)(2-tert-butyl-4-methylphenyl)phosphite, 2,2'-methylene-bis-(4,6-di-t-butylphenyl)octylphosphite, 6-tert-butyl-4-[3-[(2,4,8,10)-tetra-tert-butyldibenzo[d,f][1,3,2]dioxaphosphepin-6-yl)oxy]propyl]-2-methylphenol, and the like.

Examples of phosphite compounds having the above other structures include triphenyl phosphite, tris(nonylphenyl)phosphite, tridecyl phosphite, trioctyl phosphite, trioctadecyl phosphite, didecyl monophenyl phosphite, dioctyl monophenyl phosphite, diisopropyl monophenyl phosphite, monobutyl diphenyl phosphite, monodecyl diphenyl phosphite, monooctyl diphenyl phosphite, 2,2-methylenebis(4,6-di-tert-butylphenyl)octyl phosphite, tris(diethylphenyl)phosphite, tris(di-iso-propylphenyl)phosphite, tris(di-n-butylphenyl)phosphite, tris(2,4-di-tert-butylphenyl)phosphite, and tris(2,6-di-tert-butylphenyl)phosphite.

In addition to various phosphite compounds, examples include phosphate compounds, phosphonite compounds, and phosphonate compounds.

Examples of phosphate compounds include tributyl phosphate, trimethyl phosphate, tricresyl phosphate, triphenyl phosphate, trichlorophenyl phosphate, triethyl phosphate, diphenyl cresyl phosphate, diphenyl monoorthoxenyl phosphate, tributoxyethyl phosphate, dibutyl phosphate, dioctyl phosphate, diisopropyl phosphate, etc., and preferably triphenyl phosphate and trimethyl phosphate.

Phosphonite compounds include tetrakis(2,4-di-tert-butylphenyl)-4,4'-biphenylene diphosphonite, tetrakis(2,4-di-tert-butylphenyl)-4,3'-biphenylene diphosphonite, tetrakis(2,4-di-tert-butylphenyl)-3,3'-biphenylene diphosphonite, tetrakis(2,6-di-tert-butylphenyl)-4,4'-biphenylene diphosphonite, tetrakis(2,6-di-tert-butylphenyl)-4,3'-biphenylene diphosphonite, tetrakis(2,6-di-tert-butylphenyl)-3,3'-biphenylene diphosphonite, bis(2,4-di-tert-butylphenyl)-4-phenyl-phenylphosphonite, bis Examples of the phosphonite include (2,4-di-tert-butylphenyl)-3-phenyl-phenyl phosphonite, bis(2,6-di-n-butylphenyl)-3-phenyl-phenyl phosphonite, bis(2,6-di-tert-butylphenyl)-4-phenyl-phenyl phosphonite, and bis(2,6-di-tert-butylphenyl)-3-phenyl-phenyl phosphonite. Tetrakis(di-tert-butylphenyl)-biphenylene diphosphonite and bis(di-tert-butylphenyl)-phenyl-phenyl phosphonite are preferred, and tetrakis(2,4-di-tert-butylphenyl)-biphenylene diphosphonite and bis(2,4-di-tert-butylphenyl)-phenyl-phenyl phosphonite are more preferred. Such phosphonite compounds can be used in combination with the phosphite compounds having an aryl group substituted with two or more alkyl groups, and are therefore preferred.

Examples of phosphonate compounds include dimethyl benzenephosphonate, diethyl benzenephosphonate, and dipropyl benzenephosphonate.

Among the above phosphorus-based heat stabilizers, trisnonylphenyl phosphite, trimethyl phosphate, tris(2,4-di-tert-butylphenyl)phosphite, bis(2,4-di-tert-butylphenyl)pentaerythritol diphosphite, and bis(2,6-di-tert-butyl-4-methylphenyl)pentaerythritol diphosphite are preferably used.

The above phosphorus-based heat stabilizers can be used alone or in combination of two or more kinds. The phosphorus-based heat stabilizer is preferably blended in an amount of 0.001 to 1 part by weight, more preferably 0.01 to 0.5 parts by weight, and even more preferably 0.01 to 0.3 parts by weight per 100 parts by weight of the resin composition.

The resin composition used in the present invention may contain a hindered phenol-based heat stabilizer or a sulfur-based heat stabilizer in combination with a phosphorus-based heat stabilizer to suppress a decrease in molecular weight or deterioration in color during extrusion and molding.

Examples of hindered phenol-based heat stabilizers include, but are not limited to, those that have an antioxidant function, such as n-octadecyl-3-(4'-hydroxy-3',5'-di-t-butylphenyl)propionate, tetrakis{methylene-3-(3',5'-di-t-butyl-4-hydroxyphenyl)propionate}methane, distearyl(4-hydroxy-3-methyl-5-t-butylbenzyl)malonate, triethylene glycol-bis{3-(3-t-butyl-5-methyl-4-hydroxyphenyl)propionate}, 1,6-hexanediol-bis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, pentaerythrityl-tetrakis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, 2,2-thiazole-bis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, tetrakis(methylene- ...) and tetrakis(methylene-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate). diethylene bis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, 2,2-thiobis(4-methyl-6-t-butylphenol), 1,3,5-trimethyl-2,4,6-tris(3,5-di-t-butyl-4-hydroxybenzyl)benzene, tris(3,5-di-t-butyl-4-hydroxybenzyl)isocyanurate, 2,4-bis{(octylthio (e)methyl)-o-cresol, isooctyl-3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate, 2,5,7,8-tetramethyl-2(4',8',12'-trimethyltridecyl)chroman-6-ol, 3,3',3",5,5',5"-hexa-t-butyl-a,a',a"-(mesitylene-2,4,6-triyl)tri-p-cresol, etc.

Among these, n-octadecyl-3-(4'-hydroxy-3',5'-di-t-butylphenyl)propionate, pentaerythrityl-tetrakis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, 3,3',3",5,5',5"-hexa-t-butyl-a,a',a'-(mesitylene-2,4,6-triyl)tri-p-cresol, 2,2-thiodiethylenebis{3-(3,5-di-t-butyl-4-hydroxyphenyl)propionate}, etc. are preferred.

These hindered phenol-based heat stabilizers may be used alone or in combination of two or more.

The hindered phenol-based heat stabilizer is preferably mixed in an amount of 0.001 to 1 part by weight, more preferably 0.01 to 0.5 parts by weight, and even more preferably 0.01 to 0.3 parts by weight per 100 parts by weight of the resin composition.

Examples of sulfur-based heat stabilizers include dilauryl-3,3'-thiodipropionate, ditridecyl-3,3'-thiodipropionate, dimyristyl-3,3'-thiodipropionate, distearyl-3,3'-thiodipropionate, laurylstearyl-3,3'-thiodipropionate, pentaerythritol tetrakis (3-laurylthiopropionate), bis[2-methyl-4-(3-laurylthiopropionyloxy)-5-tert-butylphenyl]sulfide, octadecyl disulfide, mercaptobenzimidazole, 2-mercapto-6-methylbenzimidazole, and 1,1'-thiobis(2-naphthol). Of the above, pentaerythritol tetrakis (3-laurylthiopropionate) is preferred.

These sulfur-based heat stabilizers may be used alone or in combination of two or more.

The sulfur-based heat stabilizer is preferably mixed in an amount of 0.001 to 1 part by weight, more preferably 0.01 to 0.5 parts by weight, and even more preferably 0.01 to 0.3 parts by weight per 100 parts by weight of the resin composition.

When using a combination of a phosphite-based heat stabilizer, a phenol-based heat stabilizer, and a sulfur-based heat stabilizer, the total amount of these is preferably 0.001 to 1 part by weight, more preferably 0.01 to 0.3 parts by weight, per 100 parts by weight of the resin composition.

(Release Agent)
The resin composition used in the present invention may contain a mold release agent in order to further improve releasability from a mold during melt molding, within the scope of the present invention.

Such release agents include higher fatty acid esters of monohydric or polyhydric alcohols, higher fatty acids, paraffin wax, beeswax, olefin waxes, olefin waxes containing carboxy groups and/or carboxylic anhydride groups, silicone oils, organopolysiloxanes, etc.

As the higher fatty acid ester, partial or full esters of monohydric or polyhydric alcohols having 1 to 20 carbon atoms and saturated fatty acids having 10 to 30 carbon atoms are preferred. Examples of partial or full esters of monohydric or polyhydric alcohols and saturated fatty acids include stearic acid monoglyceride, stearic acid diglyceride, stearic acid triglyceride, stearate monosorbitate, stearyl stearate, behenic acid monoglyceride, behenyl behenate, pentaerythritol monostearate, pentaerythritol tetrastearate, pentaerythritol tetrapelargonate, propylene glycol monostearate, stearyl stearate, palmityl palmitate, butyl stearate, methyl laurate, isopropyl palmitate, biphenyl biphenate, sorbitan monostearate, 2-ethylhexyl stearate, etc.

Among these, stearic acid monoglyceride, stearic acid triglyceride, pentaerythritol tetrastearate, and behenyl behenate are preferably used.

As the higher fatty acid, a saturated fatty acid having 10 to 30 carbon atoms is preferable. Examples of such fatty acids include myristic acid, lauric acid, palmitic acid, stearic acid, and behenic acid.

These release agents may be used alone or in combination of two or more. The amount of such release agents is preferably 0.01 to 5 parts by weight per 100 parts by weight of the resin composition.

(Ultraviolet absorber)
The resin composition used in the present invention may contain an ultraviolet absorber. Examples of the ultraviolet absorber include benzotriazole-based ultraviolet absorbers, benzophenone-based ultraviolet absorbers, triazine-based ultraviolet absorbers, cyclic iminoester-based ultraviolet absorbers, and cyanoacrylate-based ultraviolet absorbers, and among these, benzotriazole-based ultraviolet absorbers are preferred.

Benzotriazole-based ultraviolet absorbers include, for example, 2-(2'-hydroxy-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-5'-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-5'-tert-octylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-di-tert-amylphenyl)benzotriazole, 2-(2'-hydroxy-3'-dodecyl-5'-methylphenyl)benzotriazole, 2-(2'-hydroxy-3',5'-bis(α,α'-dimethylbenzyl)phenylbenzotriazole, 2-[2'-hydroxy Benzotriazole-based ultraviolet absorbers such as benzotriazole-based ultraviolet absorbers are typified by 2-(2'-hydroxy-3'-tert-butyl-5'-methylphenyl)-5-chlorobenzotriazole, 2-(2'-hydroxy-3',5'-di-tert-butylphenyl)-5-chlorobenzotriazole, 2,2'methylenebis[4-(1,1,3,3-tetramethylbutyl)-6-(2H-benzotriazol-2-yl)phenol], and methyl-3-[3-tert-butyl-5-(2H-benzotriazol-2-yl)-4-hydroxyphenylpropionate-polyethylene glycol condensate.

The blending ratio of such ultraviolet absorbers is preferably 0.03 to 2.5 parts by weight, more preferably 0.1 to 2 parts by weight, and even more preferably 0.2 to 1.5 parts by weight, per 100 parts by weight of the resin composition.

(Light stabilizer)
The resin composition used in the present invention may contain a light stabilizer. The inclusion of a light stabilizer has the advantages of being excellent in terms of weather resistance and making the molded product less susceptible to cracking.

Examples of light stabilizers include 1,2,2,6,6-pentamethyl-4-piperidyl methacrylate, didecanoic acid bis(2,2,6,6-tetramethyl-1-octyloxy-4-piperidinyl) ester, bis(1,2,2,6,6-pentamethyl-4-piperidinyl)-[[3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl]methyl]butyl malonate, 2,4-bis[N-butyl-N-(1-cyclohexyloxy-2,2,6,6 -tetramethylpiperidin-2-yl)amino]-6-(2-hydroxyethylamine)-1,3,5-triazine, bis(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate, methyl(1,2,2,6,6-pentamethyl-4-piperidinyl)sebacate, bis(2,2,6,6-tetramethyl-4-piperidyl)carbonate, bis(2,2,6,6-tetramethyl-4-piperidyl)succinate, bis(2,2,6,6-tetramethyl 4-benzoyloxy-2,2,6,6-tetramethylpiperidine, 4-octanoyloxy-2,2,6,6-tetramethylpiperidine, bis(2,2,6,6-tetramethyl-4-piperidyl)diphenylmethane-p,p'-dicarbamate, bis(2,2,6,6-tetramethyl-4-piperidyl)benzene-1,3-disulfonate, bis(2,2,6,6-tetramethyl-4-piperidyl)phenylphosphat Examples of light stabilizers include hindered amines such as dimethylaminoethyl ester, nickel bis(octylphenyl sulfide, nickel complex-3,5-di-t-butyl-4-hydroxybenzyl phosphate monoethylate, and nickel complexes such as nickel dibutyldithiocarbamate. These light stabilizers may be used alone or in combination of two or more. The content of the light stabilizer is preferably 0.001 to 1 part by weight, more preferably 0.01 to 0.5 parts by weight, based on 100 parts by weight of the resin composition.

(Epoxy stabilizer)
In order to improve hydrolysis resistance, the resin composition used in the present invention may contain an epoxy compound within the range not impairing the object of the present invention.

Epoxy stabilizers include epoxidized soybean oil, epoxidized linseed oil, phenyl glycidyl ether, allyl glycidyl ether, t-butylphenyl glycidyl ether, 3,4-epoxycyclohexylmethyl-3',4'-epoxycyclohexyl carboxylate, 3,4-epoxy-6-methylcyclohexylmethyl-3',4'-epoxy-6'-methylcyclohexyl carboxylate, 2,3-epoxycyclohexylmethyl-3',4'-epoxycyclohexyl carboxylate, 4-(3,4-epoxy-5-methylcyclohexyl)butyl-3',4'-epoxycyclohexyl carboxylate, 3,4-epoxycyclohexylethylene oxide, cyclohexylmethyl-3,4-epoxycyclohexylcarboxylate, 3,4-epoxy-6-methylcyclohexylmethyl-6'-methylcyclohexylcarboxylate, bisphenol A diglycidyl ether, tetrabromobisphenol A glycidyl ether, diglycidyl ester of phthalic acid, diglycidyl ester of hexahydrophthalic acid, bis-epoxydicyclopentadienyl ether, bis-epoxyethylene glycol, bis-epoxycyclohexyl adipate, butadiene diepoxide, tetrafluoroethylene glycol ... phenylethylene epoxide, octyl epoxythalate, epoxidized polybutadiene, 3,4-dimethyl-1,2-epoxycyclohexane, 3,5-dimethyl-1,2-epoxycyclohexane, 3-methyl-5-t-butyl-1,2-epoxycyclohexane, octadecyl-2,2-dimethyl-3,4-epoxycyclohexyl carboxylate, N-butyl-2,2-dimethyl-3,4-epoxycyclohexyl carboxylate, cyclohexyl-2-methyl-3,4-epoxycyclohexyl carboxylate, N-butyl-2-isopropyl-3,4-epoxy-5-methylcyclohexyl carboxylate, octadecyl-3,4-epoxycyclohexyl carboxylate, 2-ethylhexyl-3',4'-epoxycyclohexyl carboxylate, 4,6-dimethyl-2,3-epoxycyclohexyl-3',4'-epoxycyclohexyl carboxylate, 4,5-epoxy tetrahydrophthalic anhydride, 3-t-butyl-4,5-epoxy tetrahydrophthalic anhydride, diethyl-4,5-epoxy-cis-1,2-cyclohexyl dicarboxylate, di-n-butyl-3-t-butyl-4,5-epoxy-cis-1,2-cyclohexyl dicarboxylate, etc. Bisphenol A diglycidyl ether is preferred in terms of compatibility, etc.

Such epoxy stabilizers are preferably blended in the range of 0.0001 to 5 parts by weight, more preferably 0.001 to 1 part by weight, and even more preferably 0.005 to 0.5 parts by weight, per 100 parts by weight of the resin composition.

(Bluing agent)
The resin composition used in the present invention can be blended with a bluing agent to eliminate the yellow color of the lens due to the polymer or ultraviolet absorbing agent. As the bluing agent, any agent that is used for polycarbonate can be used without any problem. In general, anthraquinone dyes are easily available and are preferred.

Specific examples of the bluing agent include Solvent Violet 13 (CA. No. (Color Index No.) 60725), Solvent Violet 31 (CA. No. 68210), Solvent Violet 33 (CA
Representative examples include solvents having the general name Solvent Blue 94 [CA. No. 61500], solvent Violet 36 [CA. No. 68210], solvent Blue 97 [Bayer's "Macrolex Violet RR"] and solvent Blue 45 [CA. No. 61110].

These bluing agents may be used alone or in combination of two or more. These bluing agents are preferably mixed in an amount of 0.1×10 ⁻⁴ to 2×10 ⁻⁴ parts by weight per 100 parts by weight of the resin composition.

(Flame retardant)
The resin composition used in the present invention can also be blended with a flame retardant. Examples of the flame retardant include halogen-based flame retardants such as brominated epoxy resin, brominated polystyrene, brominated polycarbonate, brominated polyacrylate, and chlorinated polyethylene, phosphate-based flame retardants such as monophosphate compounds and phosphate oligomer compounds, organic phosphorus-based flame retardants other than phosphate-based flame retardants such as phosphinate compounds, phosphonate compounds, phosphonitrile oligomer compounds, and phosphonic acid amide compounds, organic metal salt-based flame retardants such as organic sulfonic acid alkali (earth) metal salts, boric acid metal salt-based flame retardants, and stannic acid metal salt-based flame retardants, as well as silicone-based flame retardants, ammonium polyphosphate-based flame retardants, and triazine-based flame retardants. In addition, flame retardant assistants (e.g., sodium antimonate, antimony trioxide, etc.) and drip prevention agents (polytetrafluoroethylene having fibril forming ability, etc.) may be blended and used in combination with the flame retardant.

Among the flame retardants mentioned above, compounds that do not contain chlorine or bromine atoms are more suitable as flame retardants for the molded article of the present invention, which is characterized by its reduced environmental impact, because they reduce factors that are considered undesirable when incinerating or thermally recycling the material.

When a flame retardant is added, the amount is preferably in the range of 0.05 to 50 parts by weight per 100 parts by weight of the resin composition. At 0.05 parts by weight or more, sufficient flame retardancy is achieved, and at 50 parts by weight or less, the strength and heat resistance of the molded product are excellent.

(Elastic polymer)
In the resin composition used in the present invention, an elastic polymer can be used as an impact improver, and examples of the elastic polymer include natural rubber or graft copolymers in which one or more monomers selected from aromatic vinyl, vinyl cyanide, acrylic acid ester, methacrylic acid ester, and vinyl compounds copolymerizable therewith are copolymerized with a rubber component having a glass transition temperature of 10° C. More preferred elastic polymers are core-shell type graft copolymers in which one or more shells of the above monomers are graft copolymerized with a core of a rubber component.

Also included are block copolymers of such rubber components and the above monomers. Specific examples of such block copolymers include thermoplastic elastomers such as styrene-ethylene-propylene-styrene elastomer (hydrogenated styrene-isoprene-styrene elastomer) and hydrogenated styrene-butadiene-styrene elastomer. It is also possible to use various other elastic polymers known as thermoplastic elastomers, such as polyurethane elastomers, polyester elastomers, polyetheramide elastomers, etc.

A core-shell type graft copolymer is more suitable as an impact improver. In the core-shell type graft copolymer, the particle diameter of the core is 0.05 or less in terms of weight average particle diameter.
The thickness is preferably 0.8 μm or less, more preferably 0.1 to 0.6 μm, and even more preferably 0.1 to 0.5 μm. If the thickness is in the range of 0.05 to 0.8 μm, better flex resistance is achieved. The elastic polymer preferably contains 40% or more of a rubber component, and even more preferably contains 60% or more of a rubber component.

Examples of rubber components include butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, acrylic-silicone composite rubber, isobutylene-silicone composite rubber, isoprene rubber, styrene-butadiene rubber, chloroprene rubber, ethylene-propylene rubber, nitrile rubber, ethylene-acrylic rubber, silicone rubber, epichlorohydrin rubber, fluororubber, and those with hydrogen added to the unsaturated bonds, but rubber components that do not contain halogen atoms are preferable in terms of environmental impact, due to concerns about the generation of harmful substances during combustion.

The glass transition temperature of the rubber component is preferably -10°C or lower, more preferably -30°C or lower, and the rubber component is particularly preferably butadiene rubber, butadiene-acrylic composite rubber, acrylic rubber, or acrylic-silicone composite rubber. Composite rubber refers to rubber in which two types of rubber components are copolymerized, or rubber polymerized to form an IPN structure in which the components are intertwined with each other so that they cannot be separated.

Examples of aromatic vinyls in the vinyl compounds copolymerized with the rubber component include styrene, α-methylstyrene, p-methylstyrene, alkoxystyrene, and halogenated styrene, with styrene being particularly preferred. Examples of acrylic esters include methyl acrylate, ethyl acrylate, butyl acrylate, cyclohexyl acrylate, and octyl acrylate, with methyl methacrylate being particularly preferred. Among these, it is particularly preferred to include methacrylic esters such as methyl methacrylate as an essential component. More specifically, the methacrylic ester is preferably contained in an amount of 10% by weight or more, more preferably 15% by weight or more, based on 100% by weight of the graft component (100% by weight of the shell in the case of a core-shell polymer).

The elastic polymer containing a rubber component having a glass transition temperature of 10°C or less may be produced by any of the polymerization methods of bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization, and the copolymerization method may be either one-stage grafting or multi-stage grafting. The copolymer may also be a mixture with a copolymer of only the graft component that is a by-product during production. In addition to the general emulsion polymerization method, examples of the polymerization method include a soap-free polymerization method using an initiator such as potassium persulfate, a seed polymerization method, and a two-stage swelling polymerization method. In the suspension polymerization method, the aqueous phase and the monomer phase are held separately and accurately fed to a continuous disperser, and the particle size is controlled by the rotation speed of the disperser, and in the continuous manufacturing method, the monomer phase is fed into an aqueous liquid having dispersibility through a fine orifice or porous filter having a diameter of several to several tens of μm to control the particle size. In the case of a core-shell type graft polymer, the reaction may be one-stage or multi-stage for both the core and the shell.

Such elastic polymers are commercially available and can be easily obtained. For example, examples of rubber components that are mainly butadiene rubber, acrylic rubber, or butadiene-acrylic composite rubber include Kane Ace B series (e.g., B-56, etc.) from Kanegafuchi Chemical Industry Co., Ltd., Metablen C series (e.g., C-223A, etc.) and W series (e.g., W-450A, etc.) from Mitsubishi Rayon Co., Ltd., Paraloid EXL series (e.g., EXL-2602, etc.), HIA series (e.g., HIA-15, etc.), BTA series (e.g., BTA-III, etc.), and KCA series from Kureha Chemical Industry Co., Ltd., Paraloid EXL series and KM series (e.g., KM-336P, KM-357P, etc.) from Rohm and Haas Co., Ltd., and UCL Modifier Resin series from Ube Cycon Co., Ltd. (UMG ABS Co., Ltd.), AXS resin series), and products with an acrylic-silicone composite rubber as the main rubber component include those sold by Mitsubishi Rayon Co., Ltd. under the trade names Metablen S-2001 or SRK-200.

The composition ratio of the impact modifier is preferably 0.2 to 50 parts by weight, more preferably 1 to 30 parts by weight, and more preferably 1.5 to 20 parts by weight per 100 parts by weight of the resin composition. This composition range can give the composition good bending resistance while suppressing a decrease in rigidity.

(Carbodiimide)
The resin composition used in the present invention preferably contains a carbodiimide in order to suppress deterioration of the hue in a humid and hot environment. The carbodiimide is not particularly limited as long as it is a compound having an "-N=C=N-" structure in the molecule. Examples of the carbodiimide compound include monocarbodiimide compounds, polycarbodiimide compounds, cyclic carbodiimide compounds, etc., which are generally widely known, and any of them can be used. Examples of the carbodiimide compound include those described in JP-A-9-309871, JP-A-9-249801, JP-A-9-208649, JP-A-9-296097, JP-A-8-81,533, JP-A-8-27092, JP-A-9-136869, JP-A-9-124582, JP-A-9-188807, JP-A-2005-82642, etc. , JP 2005-53870, JP 2012-36392, JP 2010-163203, JP 2011-174094, WO 2008/072514, WO 2010/071211, JP 2012-81759, JP 2012-52014, JP 2012-7079, etc.

The molecular weight of the carbodiimide is preferably 150 or more, more preferably 185 or more, and even more preferably 200 or more. Within this range, good storage stability is obtained in addition to improved moisture resistance. Furthermore, the molecular weight of the carbodiimide is preferably 13,000 or less, more preferably 8,000 or less, and even more preferably 4,000 or less. Within this range, the compatibility with polycarbonate resin and acrylic resin is excellent, and the transparency when molded is excellent, which is preferable.

In this specification, when the carbodiimide is a polymer, the molecular weight of the carbodiimide means the "mass average molecular weight". Here, the mass average molecular weight of the carbodiimide is the mass average molecular weight in terms of polystyrene measured by gel permeation chromatography (GPC). Specifically, the mass average molecular weight of the carbodiimide in terms of polystyrene is measured at a column temperature of 40°C using a measuring device LC-9A/RID-6A manufactured by Shimadzu Corporation, a column Shodex K-800P/K-804L/K-804L manufactured by Showa Denko K.K., and chloroform or the like as the mobile phase, and can be calculated using the calibration curve of standard polystyrene.

As the carbodiimide, any of monocarbodiimides, polycarbodiimides and cyclic carbodiimides can be used, but cyclic carbodiimides and polycarbodiimides are more preferred.

As the polycarbodiimide, commercially available products may be used, such as aliphatic polycarbodiimide (Nisshinbo Chemical's "HMV-8CA" and "LA-1"), and carbodiimide-modified isocyanate (Nisshinbo Chemical's "Carbodilite V-05"). Of these, aliphatic polycarbodiimide (Nisshinbo Chemical's "HMV-8CA" and "LA-1") are preferred.

(Method of manufacturing sheet or film)
The method for producing the sheet or film of the present invention is preferably a melt film-forming method in which the molten resin composition melt-extruded from a die is cooled by being circumscribed by three cooling rolls in the order of a first cooling roll, a second cooling roll, and a third cooling roll, and then taken up. The extruder used for the melt extrusion preferably has a hopper section for supplying the resin composition, a cylinder section for melting the resin composition, a screw for biting the resin composition into the cylinder and moving the molten resin composition, a gear pump for moving a certain amount of the molten resin composition, a filter for removing foreign matter in the molten resin composition, and a die for extruding the molten resin composition. It is preferable to thoroughly dry the resin composition prior to melt extrusion to remove moisture and internal air. It is preferable to perform a drying treatment in advance, since it is possible to prevent foaming of the obtained sheet or film and thermal deterioration of the resin composition.

The moisture content of the pellets suitable for use in the sheet or film manufacturing method of the present invention is preferably 1,000 ppm or less, more preferably 500 ppm or less. It is preferable to dry the pellets using a dryer with a dehumidifying function, as this has the effect of shortening the drying time. The drying temperature of the pellets is preferably set lower than the glass transition temperature of the resin composition, preferably (Tg-20) to (Tg-15) °C, more preferably (Tg-15) to (Tg-5) °C. If the drying temperature is set to Tg °C or higher, the pellets may become semi-melted and stick to each other. Furthermore, if the drying temperature is low, drying will be insufficient.

In an extruder used for melt extrusion, in order to prevent the air (oxygen) in the hopper from accelerating thermal deterioration of the resin composition, it is preferable to replace the atmosphere in the hopper with hot nitrogen gas, or to circulate hot nitrogen gas or to make the hopper oxygen-free by evacuating it. The nitrogen flow rate is preferably 2 to 6 l/min. More preferably, it is 3 to 5 l/min, and it is preferable that the inside of the hopper is at positive pressure. If it is below the lower limit, the hopper may not be able to be at a sufficiently positive pressure. If it exceeds the upper limit, the amount of outflow outside the hopper increases, and there is a concern that the oxygen concentration will decrease due to external leakage. When making a vacuum, it is preferable to make the degree of vacuum -100 kPa or less when the screw barrel is filled with resin. If the degree of vacuum is insufficient, there may be gaps in the flanges and other joints including the hopper, and the oxygen-free state may not be achieved.

The resin composition fed into the hopper is then bitten into the extruder by the biting part of the screw (feeding part) at the feed port. At this time, the resin becomes sticky between the start of the screw biting and the barrel part, and gets entangled with the screw, hindering the subsequent supply of the resin composition. The resin composition may remain at the same point in the extruder for a long time, gradually producing brown or black heat-degraded products or causing fluctuations in the discharge amount. In order to avoid such problems, it is preferable to water-cool the barrel part near the biting part of the screw. Then, the extruder screw moves inside the extruder toward the die. At this time, it is preferable to prevent heat-degraded products of the resin composition from being generated as much as possible in, for example, the flange part connecting the extruder tip and the gear pump, the conduit for the molten resin composition, the conduit connecting the filter housing and the extrusion die, the filter housing part, etc. Therefore, it is preferable to prevent localized retention of the resin composition by, for example, having a structure in which the conduit does not bend suddenly.

In addition, it is preferable that the extruder has a structure that does not have a vent function for vacuum degassing after the resin composition is melted, from the viewpoint of not providing a retention part. The discharge capacity of the extruder is set in consideration of the above-mentioned preferable retention time. From an industrial viewpoint, for example, when producing a film with a width of about 1,000 mm and a thickness of about 50 μm, it is preferable to select an extruder with a maximum discharge rate of about 130 kg/h. By using such an extruder, a film with a width of 1,100 mm and a thickness of 50 μm can be produced at a speed of about 30 m/min using a die with a width of 1,200 mm. The screw can be a screw that is usually used for melt extrusion of the resin composition, and among them, a single-shaft screw is preferable. In addition, the screw shape can be a full flight structure or a double flight structure, and it is preferable that the groove depth is sufficient to efficiently discharge the gas generated in the extruder cylinder toward the hopper. The groove depth in the pellet supply part of the screw is preferably 5 to 10 mm, more preferably 6 to 8 mm. If the groove depth is deeper than 10 mm, the pellets may be excessively bitten, and the screw torque may increase, which may cause screw damage. If the groove depth is shallower than 5 mm, the pellets may be unstablely bitten, and the discharge amount may become unstable. At this time, it is preferable to set the set temperature of the extruder cylinder and the piping so that the difference with the temperature of the discharged resin composition is within +15 ° C. More preferably, it is within +10 ° C. If a temperature difference of more than +15 ° C occurs, it indicates that the resin composition is abnormally heated by screw shear, and the resin is depolymerized and gelled by shear. It is also preferable to make the screw structure less susceptible to shear, and it is preferable to make the compression ratio of the screw less than 2.50. The compression ratio of the screw is more preferably 1.30 or more and less than 2.50, and even more preferably 1.50 or more and 2.30 or less. If the compression ratio of the screw is less than 1.30, the kneading of the resin composition becomes insufficient, and the melted state becomes unstable. The kneading section and metering section at the tip of the screw do not affect the compression ratio, so their shapes can be freely selected. However, structures that forcibly melt unmelted pellets, such as Madoc, are not preferred because they promote heat generation. It is also preferable to promote dispersion in the kneading section of the screw, and it is more preferable to have a kneading structure that promotes elongation deformation, such as elongation deformation type waves and CRD mixing.

The filter is preferably one that is configured with a leaf disk-shaped or pleated filter element with the required filtration area and a cylindrical housing that holds it. Any known filter element can be used, but it is preferable to use a commercially available metal filter element that is heat-resistant and pressure-resistant, such as a sintered metal type or an aggregate type of ultrafine metal fibers.

As the melt extrusion die used in the present invention, it is preferable to use a known die such as a T-die (coat hanger type die) that supplies the resin composition from the center of the die width direction, or an I-die that divides the T-die into two at the inlet of the resin composition and allows the resin composition to flow in from one end of the die width direction. It is preferable to finish the lip, which is the part of the extrusion die from which the resin composition is discharged, to a sufficiently smooth shape. In the present invention, the lip opening (die opening) is preferably in the range of 5t to 25t, and more preferably in the range of 7t to 20t, where t is the desired film thickness. Specifically, for example, in the case of a film with a thickness of 100 μm, the lip opening is preferably 0.5 to 2.5 mm, and more preferably 0.7 mm to 2.0 mm. By adjusting the lip opening to this range, the shear stress that the discharged resin composition receives at the die lip is reduced, and the birefringence, especially the in-plane birefringence, can be suppressed to a low value. In addition, because this lip opening is sufficiently wide relative to the film thickness, there is also the advantageous effect of reducing die streaks caused by scratches on the die lip or contact with attached materials. When used for optical applications, it is desirable to suppress die streaks on the film as much as possible. For automatic adjustment of thickness unevenness, it is preferable to adopt a method of mechanically rotating the die lip bolt to adjust the lip opening, or a method of attaching heating devices to the die lip at regular intervals and individually adjusting the temperature of each device to adjust the film thickness using the temperature change in the viscosity of the molten resin (temperature lip).

The ratio R2/R1 of the peripheral speed R2 of the second cooling roll to the peripheral speed R1 of the first cooling roll is preferably 1.050 to 1.100, more preferably 1.050 to 1.080. The drawdown phenomenon, which is a problem during thermoforming, can be suppressed by increasing the thermal shrinkage of the film. The thermal shrinkage of the film can be adjusted by the stretching ratio when stretching the unstretched film, but it can also be adjusted by controlling the cooling roll temperature during unstretched film formation to an appropriate range, creating a speed difference between the cooling rolls, and slightly stretching. The method of creating a speed difference between the cooling rolls is preferably used because it does not require longitudinal stretching equipment and is a simple method. If the ratio R2/R1 is too small, the thermal shrinkage of the film becomes too small, inducing drawdown during heat molding. If the ratio R2/R1 is too large, the thermal shrinkage of the film becomes too large, shrinkage stress remains in the thermoformed product, and distortion may occur, which is not preferable. In order to precisely control the speed ratio of the chill rolls, it is preferable that each chill roll be equipped with equipment capable of controlling the peripheral speed with an accuracy of 0.01%.

The temperature of the first cooling roll used in the sheet or film manufacturing method of the present invention is preferably (Tg-7) to (Tg) ° C, more preferably (Tg-5) to (Tg) ° C, and even more preferably (Tg-3) ° C to (Tg-1) ° C, when the glass transition temperature of the resin composition is (Tg) ° C. If the temperature of the first cooling roll is lowered beyond the above range, the adhesion of the sheet or film to the roll decreases, and as a result, air is easily entrained, causing subtle slippage between the roll and the sheet or film. This is undesirable because the sheet or film is excessively cooled and the film thickness cannot be made uniform. On the other hand, if the temperature of the cooling roll is higher than the above range, the adhesion of the sheet or film to the roll becomes too high, and scratches, distortions, etc. are easily caused on the sheet or film when it is peeled off from the roll, which is undesirable. The temperature of the second cooling roll is preferably within the range of (Tg-25) ° C to (Tg-15) ° C. If the temperature of the second cooling roll is lowered beyond the above range, the adhesion of the sheet or film to the roll decreases, which makes it easier for air to be entrained, causing slight slippage between the roll and the sheet or film. This can cause scratches on the surface of the cooled sheet or film.

Furthermore, it is preferable to set the temperature of the third roll to 5 to 10°C lower than the temperature of the second cooling roll. It is preferable to use cooling rolls whose surface temperatures can be controlled uniformly for the first to third cooling rolls. In order to keep the surface temperature of the rolls uniform, it is preferable to flow a temperature-controlled cooling medium inside. It is also preferable to use cooling rolls with a mirror surface, and those made of materials such as hard chrome or ceramic are preferably used.

In the method of the present invention, the film-forming speed of the sheet or film is not particularly limited and can be set appropriately within a range that satisfies the physical properties of the sheet or film. From the viewpoint of productivity, a faster film-forming speed is desirable, but if the film-forming speed is too fast, the adhesion to the roll may decrease due to air entrapment in the cast portion, and the homogeneity of the sheet or film may be impaired. The preferred film-forming speed is 2 to 50 m/min, more preferably 5 to 30 m/min, as the peripheral speed R1 of the first cooling roll.

The thickness of the sheet or film of the present invention is preferably 30 μm or more, more preferably 50 μm or more, and even more preferably 75 μm or more. The thickness is preferably 500 μm or less, more preferably 300 μm or less, even more preferably 200 μm or less, particularly preferably 180 μm or less, and most preferably 170 μm or less. If the thickness of the sheet or film is within the above range, it will have excellent surface hardness and heat resistance, as well as excellent acid resistance and chemical resistance.

Furthermore, in order to have better acid resistance and chemical resistance, the thickness of the sheet or film of the present invention is preferably 90 μm or more, more preferably 100 μm or more, even more preferably 120 μm or more, particularly preferably 140 μm or more, and most preferably 150 μm or more.

Furthermore, the sheet or film of the present invention has excellent transparency, and its haze is preferably 2.5% or less, more preferably 1.0% or less, and even more preferably 0.5% or less.

(Surface Treatment)
The sheet or film of the present invention can be subjected to various surface treatments. The surface treatment referred to here is a method for forming a new layer on the surface of a resin molded product, such as vapor deposition (physical vapor deposition, chemical vapor deposition, etc.), plating (electroplating, electroless plating, hot-dip plating, etc.), painting, coating, printing, etc., and any commonly used method can be applied. Specific examples of the surface treatment include various surface treatments such as hard coat, water-repellent/oil-repellent coat, ultraviolet absorbing coat, infrared absorbing coat, and metallizing (vapor deposition, etc.). Hard coat is a particularly preferred and necessary surface treatment.

(Aspect 2 of the present invention)
The present invention relates to a laminate formed from a sheet layer formed from a thermoplastic resin (D) and (II) a film layer formed on at least one side of the sheet layer, the film layer being a film layer formed from a resin composition containing: polycarbonate resin (A) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c); and polycarbonate resin (B) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain less than 5 mol % of units (a), 30 to 100 mol % of units (b), and 0 to 70 mol % of units (c).

(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer from 0 to 10.)

(Sheet layer formed from thermoplastic resin (D))
The laminate of the present invention contains a sheet layer formed from a thermoplastic resin (D). There are no particular limitations on the thermoplastic resin sheet layer, and various resin sheets can be used.

The thermoplastic resin (D) may be mainly composed of either an amorphous resin or a crystalline resin. Among amorphous thermoplastic resins, polycarbonate-based resins, polyester-based resins, and acrylic-based resins are preferred from the viewpoints of cost, adhesion, and handleability of the resulting laminated thermoplastic resin film, with polycarbonate-based resins and acrylic-based resins being more preferred, and polycarbonate-based resins being particularly preferred.

As the polycarbonate resin, aromatic polycarbonate resin is preferable, and it may be either a homopolymer or a copolymer. Moreover, the aromatic polycarbonate resin may have a branched structure, a linear structure, or a mixture of a branched structure and a linear structure. The aromatic polycarbonate resin used in the present invention may be produced by any known method, such as the phosgene method, the ester exchange method, or the pyridine method. Representative examples of dihydric phenols used in polycarbonate production include bisphenols, and in particular, 2,2-bis(4-hydroxyphenyl)propane, i.e., bisphenol A, is preferably used. Furthermore, a part or all of bisphenol A may be replaced with another dihydric phenol. The thermoplastic resin (D) may be used alone or in combination of two or more types.

Examples of acrylic resins include the following compounds as monomers used in acrylic resins. For example, methyl methacrylate, methacrylic acid, acrylic acid, benzyl (meth)acrylate, n-butyl (meth)acrylate, i-butyl (meth)acrylate, t-butyl (meth)acrylate, 2-ethylhexyl (meth)acrylate, lauryl (meth)acrylate, tridecyl (meth)acrylate, stearyl (meth)acrylate, glycidyl (meth)acrylate, hydroxypropyl (meth)acrylate, 2-methoxyethyl (meth)acrylate, 2-ethoxyethyl (meth)acrylate, cyclohexyl (meth)acrylate, isobornyl (meth)acrylate, norbornyl (meth)acrylate, dicyclopentenyl (meth)acrylate, dicyclopentanyl (meth)acrylate, dicyclopentenyloxyethyl (meth)acrylate, tetrahydrofurfuryl (meth)acrylate. Examples of the acrylates include acrylic (meth)acrylate, 2-hydroxyethyl (meth)acrylate, 2-(meth)acryloyloxyethyl succinate, 2-(meth)acryloyloxyethyl maleate, 2-(meth)acryloyloxyethyl phthalate, 2-(meth)acryloyloxyethyl hexahydrophthalate, pentamethylpiperidyl (meth)acrylate, tetramethylpiperidyl (meth)acrylate, dimethylaminoethyl (meth)acrylate, diethylaminoethyl (meth)acrylate, cyclopentyl methacrylate, cyclopentyl acrylate, cyclohexyl methacrylate, cyclohexyl acrylate, cycloheptyl methacrylate, cycloheptyl acrylate, cyclooctyl methacrylate, cyclooctyl acrylate, cyclododecyl methacrylate, and cyclododecyl acrylate. These may be used by polymerizing alone or by polymerizing two or more kinds.

In particular, it is preferable to include methyl methacrylate and methyl acrylate. It is preferable to include 50 to 99 mol% of methyl methacrylate and 1 to 50 mol% of methyl acrylate as monomer components, more preferably 60 to 99 mol% of methyl methacrylate and 1 to 40 mol% of methyl acrylate, and even more preferably 70 to 99 mol% of methyl methacrylate and 1 to 30 mol% of methyl acrylate. If the monomer component contains more than 99 mol% methyl methacrylate, the thermal decomposition resistance is poor and molding defects such as silver may occur during molding. If the monomer component contains less than 50 mol% methyl methacrylate, the heat distortion temperature may decrease.

The thermoplastic resin used in the present invention can be blended with additives such as heat stabilizers, plasticizers, light stabilizers, polymerized metal deactivators, flame retardants, lubricants, antistatic agents, surfactants, antibacterial agents, UV absorbers, release agents, colorants, and impact modifiers depending on the application and needs.

(Film layer formed on at least one side of the sheet layer)
In the laminate of the present invention, the film layer formed on at least one side of the sheet layer is a film layer formed from a resin composition containing a specific polycarbonate resin (A) and a specific polycarbonate resin (B) and, if desired, further containing an acrylic resin (C).

(Polycarbonate resin (A))
The polycarbonate resin (A) used in the resin composition of the present invention is the same as the polycarbonate resin (A) described above (Aspect 1 of the present invention).

(Polycarbonate resin (B))
The polycarbonate resin (B) used in the resin composition of the present invention is the same as the polycarbonate resin (B) described above (Aspect 1 of the present invention).

(Production method of polycarbonate resin)
The method for producing the polycarbonate resin (A) and the polycarbonate resin (B) used in the present invention is the same as the method for producing the polycarbonate resin described above (Aspect 1 of the present invention).

(Specific viscosity: η _SP )
The specific viscosity (η _SP ) of the polycarbonate resin (A) and the polycarbonate resin (B) is the same as the specific viscosity (η _SP ) described above in (Aspect 1 of the present invention).

(Acrylic Resin (C))
The acrylic resin (C) used if desired in the present invention is the same as the acrylic resin (C) described above in (Aspect 1 of the present invention).

(Method for producing a resin composition containing a polycarbonate resin and an acrylic resin)
The method for producing the resin composition used in the present invention is the same as the method for producing the resin composition described above (Aspect 1 of the present invention).

(Weight ratio)
The weight ratio between the polycarbonate resin (A) and the polycarbonate resin (B) is the same as that described above in (Aspect 1 of the present invention).
The weight ratio of the mixture of the polycarbonate resin (A) and the polycarbonate resin (B) to the acrylic resin (C) is the same as that described above in (Aspect 1 of the present invention).

(Glass transition temperature: Tg)
The glass transition temperature (Tg) of the resin composition used in the present invention is the same as the glass transition temperature (Tg) described above in (Aspect 1 of the present invention).

(Pencil hardness)
The pencil hardness of the resin composition used in the present invention is the same as that described above in (Aspect 1 of the present invention).

(Additives)
The various additives used in the present invention are the same as those described above in (Aspect 1 of the present invention).

(Method for manufacturing laminate)
The laminate of the present invention can be produced by known methods such as coextrusion, extrusion lamination, thermal lamination, dry lamination, etc. Among these, it is particularly preferable to use the coextrusion method.

In the case of co-extrusion, the resins constituting each layer of the laminate and additives are mixed through a feed block or a multi-manifold die using multiple extruders to form a laminate. To further improve the strength and impact resistance of the laminate, the laminate obtained in the above process can be stretched uniaxially or biaxially by a roll method, tenter method, tubular method, etc.

The laminate of the present invention has excellent transparency, acid resistance, chemical resistance, surface hardness, flexibility and adhesion. Therefore, the uses of the laminate of the present invention are not particularly limited, but it can be used for, for example, transparent sheets for building materials, interior parts, display covers, etc., sheets for resin-coated metal plates, sheets for molding (vacuum/pressure molding, heat press molding, etc.), colored plates, transparent plates, shrink films, shrink labels, shrink tubes, automotive interior materials, resin glazing, home appliance components, office automation equipment components, etc.

(Thickness of laminate)
In the laminate of the present invention, the thickness of the sheet layer is preferably from 100 μm to 500 μm, more preferably from 120 μm to 400 μm, and even more preferably from 150 μm to 300 μm.

The thickness of the film layer is preferably 25 μm or more and 250 μm or less, more preferably 30 μm or more and 250 μm or less, even more preferably 35 μm or more and 200 μm or less, and particularly preferably 40 μm or more and 180 μm or less.

Furthermore, the proportion of the film layer in the total thickness of all layers of the laminate is preferably 3% to 30%, more preferably 5% to 25%, and even more preferably 10% to 20%. If the thickness of the film layer is within this range, a laminate can be provided that has excellent surface hardness and heat resistance, as well as excellent flexibility.

The laminate of the present invention also has excellent transparency, and its haze is preferably 2.5% or less, more preferably 1.0% or less, and even more preferably 0.5% or less.

(Surface Treatment)
The laminate of the present invention can be subjected to various surface treatments as described above in (Aspect 1 of the present invention).

The present invention will be described in detail below with reference to examples, but the present invention is not limited thereto. In the examples, "parts" means "parts by weight." The resins and evaluation methods used in the examples are as follows.

1. Polymer composition ratio (NMR)
Each repeating unit was measured by proton NMR using JNM-AL400 manufactured by JEOL Ltd., and the polymer composition ratio (molar ratio) was calculated.

2. Specific Viscosity: Measured using an Ostwald viscometer from a solution prepared by dissolving 0.7 g of polycarbonate resin in 100 ml of methylene chloride at 20°C.
Specific viscosity (η _SP )=(t−t ₀ )/t ₀
[ _t0 is the number of seconds that methylene chloride falls, and t is the number of seconds that the sample solution falls]

3. Surface Hardness According to JIS K5400, a line was drawn on the surface of the first layer (the film layer side made of the resin composition) of a film or laminate sample cut into a size of 80 mm x 60 mm in a temperature-controlled room at an atmospheric temperature of 23°C with a pencil at a 45° angle and under a load of 750 g, and the surface condition was evaluated visually.

4. Haze The film and melt-co-extruded sheet samples were cut into 50 x 50 mm pieces and measured using a haze meter SH-7000 manufactured by Nippon Denshoku Industries Co., Ltd. under conditions of a D65 light source and an angle of 10°.
◎: 0.5% or less ○: More than 0.5% and 1.0% or less △: More than 1.0% and 2.5% or less ×: More than 2.5%

5. Chemical resistance The film and melt-co-extruded sheet samples were cut into 50 x 50 mm pieces, and a commercially available suntan cream (Neutrogena) was uniformly applied to the surfaces of the film and sheet samples (on the film layer side). After heat treatment at 80°C for 4 hours, the surfaces were washed with a neutral detergent and wiped with a cloth. The haze of the film surface appearance after that was measured and evaluated using a haze meter SH-7000 manufactured by Nippon Denshoku Industries Co., Ltd. under conditions of a D65 light source and 10°.
◯: Haze change is 35% or less △: Haze change is more than 35% and 45% or less ×: Haze change is more than 45%

6. Acid resistance The film and melt-co-extruded sheet samples were cut into 100 x 150 mm pieces and heat-treated at 85°C for 1 hour. Then, 1 ml of a commercially available aqueous phosphoric acid solution diluted to 30% by weight was dropped onto the film and sheet (film layer side) surfaces, dried at 85°C for 30 minutes, and then wiped off with a cloth to observe the appearance of the film surface.
◯: No tears or holes were found after n=3 observations. △: One or two tears or holes were found after n=3 observations. ×: All tears or holes were found after n=3 observations.

7. Flexibility The film and melt-co-extruded sheet samples were cut into 50 x 50 mm pieces and folded at 180° so that both ends met, and the change in the bent portion was observed.
◯: Does not break ×: Breaks

8. Adhesion A melt-co-extruded sheet sample was cut into a size of 50 x 50 mm, and 100 squares were scratched with a width of 1 mm from the surface of the sheet (film layer side) to the interface layer using a cross-cut method, and tape was attached to the squares and peeled off.
○: No peeling of any of the 100 squares ×: Peeling of one or more squares occurred

[Polycarbonate resin (A)]
ISS-PC1 (Example):
Structural units derived from isosorbide (hereinafter referred to as ISS)/structural units derived from 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro(5,5)undecane (hereinafter referred to as SPG)/structural units derived from 1,9-nonanediol (hereinafter referred to as ND)=73/21/6 (mol %), specific viscosity 0.378
[Polycarbonate resin (B)]
ISS-PC2 (Example)
Structural units derived from ISS/structural units derived from ND=88/12 (mol %), specific viscosity 0.366
[Acrylic resin (C)]
Daicel Evonik ACRYPET 8N

(Production of polycarbonate resin (A))
369 parts of isosorbide (hereinafter abbreviated as ISS), 221 parts of 3,9-bis(2-hydroxy-1,1-dimethylethyl)-2,4,8,10-tetraoxaspiro(5,5)undecane (hereinafter abbreviated as SPG), 33 parts of 1,9-nonanediol (hereinafter abbreviated as ND), 750 parts of diphenyl carbonate (hereinafter abbreviated as DPC), and 0.8×10 ⁻² parts of tetramethylammonium hydroxide and 0.6×10 ⁻⁴ parts of barium stearate as catalysts were heated to 200° C. under a nitrogen atmosphere and melted. Thereafter, the temperature was raised to 220° C. over 30 minutes and the degree of vacuum was adjusted to 20.0 kPa. Thereafter, the temperature was raised to 240° C. over another 30 minutes and the degree of vacuum was adjusted to 10 kPa. After maintaining the temperature for 10 minutes, the degree of vacuum was reduced to 133 Pa or less over 1 hour. After the reaction was completed, the mixture was discharged from the bottom of the reaction tank under nitrogen pressure, and while being cooled in a water tank, it was cut with a pelletizer to obtain pellets (ISS-PC1).

(Production of polycarbonate resin (B))
445 parts of isosorbide (hereinafter abbreviated as ISS), 67 parts of 1,9-nonanediol (hereinafter abbreviated as ND), 750 parts of diphenyl carbonate (hereinafter abbreviated as DPC), and 0.0025 parts of barium stearate as a catalyst were heated to 120°C under a nitrogen atmosphere and melted. Thereafter, the mixture was sent to a reaction vessel, and the heat transfer medium temperature of the condenser was adjusted to 40°C, the internal resin temperature was adjusted to 170°C, and the degree of vacuum was adjusted to 13.4 kPa over 30 minutes. Thereafter, the degree of vacuum was adjusted to 3.4 kPa over 20 minutes, and the temperature was maintained for 10 minutes. The degree of vacuum was further reduced to 0.9 kPa over 30 minutes, the internal temperature of the resin was adjusted to 180°C, and this temperature was maintained for 10 minutes. After that, the degree of vacuum was reduced to 0.2 kPa, and the resin temperature was increased from 180°C to 225°C over 30 minutes. After the resin reached a specified viscosity, it was discharged from the bottom of the reaction tank under nitrogen pressure, and while being cooled in a water tank, it was cut with a pelletizer to obtain pellets (ISS-PC2).

(Aspect 1 of the present invention)
[Example 1]
<Production of Resin Composition>
The (ISS-PC1) and (ISS-PC2) obtained by the production of the above-mentioned polycarbonate resin (A) and polycarbonate resin (B), and the acrylic resin (C) were used, and each resin was dried at 90°C for 12 hours or more, and then mixed in a weight ratio of 40:20:40. The mixture was then melt-kneaded in a vented twin-screw extruder [KZW15-25MG, manufactured by Technobel Co., Ltd.] with both the cylinder and the die at 250°C, to obtain resin composition pellets (P-1) of the acrylic resin and the polycarbonate resin.
<Film Production>
The resin composition pellets (P-1) prepared by the above-mentioned manufacturing method were used, and a screw diameter of 40 m was used.
The mixture was melted in a 100-m single-screw extruder and extruded through a T-die set at 230° C. The extruded film was cooled by a mirror-finished roll to obtain a 100 μm film. The various evaluation results of the obtained film are shown in Table 1.

[Example 2]
<Production of Resin Composition>
Resin composition pellets (P-2) were obtained in the same manner as in Example 1, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 40:10:50.
<Film Production>
Except for using (P-2) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 3]
<Production of Resin Composition>
Resin composition pellets (P-3) were obtained in the same manner as in Example 1, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 30:20:50.
<Film Production>
Except for using (P-3) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 4]
<Film Production>
In Example 3, the thickness of the extruded film was adjusted to 158 μm. The obtained film was subjected to various evaluations, and the results are shown in Table 1.

[Example 5]
<Production of Resin Composition>
Resin composition pellets (P-4) were obtained in the same manner as in Example 1, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 20:30:50.
<Film Production>
Except for using (P-4) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 6]
<Production of Resin Composition>
A resin composition pellet (P-5) was obtained in the same manner as in Example 1, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 30:30:40.
<Film Production>
Except for using (P-5) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 7]
<Production of Resin Composition>
Resin composition pellets (P-6) were obtained in the same manner as in Example 6, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 50:20:30.
<Film Production>
The resin composition pellets (P-6) were used to obtain a 94 μm film in the same manner as in Example 1. The same evaluations as in Example 1 were carried out, and the results are shown in Table 1.

[Example 8]
<Production of Resin Composition>
A resin composition pellet (P-7) was obtained in the same manner as in Example 6, except that (ISS-PC1), (ISS-PC2) and the acrylic resin (C) were mixed in a weight ratio of 65:20:15.
<Film Production>
The resin composition pellets (P-7) were used to obtain a 92 μm film in the same manner as in Example 1. The same evaluations as in Example 1 were carried out, and the results are shown in Table 1.

[Example 9]
<Production of Resin Composition>
A resin composition pellet (P-8) was obtained in the same manner as in Example 1, except that (ISS-PC1) and (ISS-PC2) were mixed in a weight ratio of 70:30.
<Film Production>
Except for using (P-8) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 10]
<Production of Resin Composition>
A resin composition pellet (P-9) was obtained in the same manner as in Example 1, except that (ISS-PC1) and (ISS-PC2) were mixed in a weight ratio of 50:50.
<Film Production>
Except for using (P-9) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Example 11]
<Film Production>
In Example 10, the thickness of the extruded film was adjusted to 168 μm. The obtained film was subjected to various evaluations, and the results are shown in Table 1.

[Example 12]
<Production of Resin Composition>
A resin composition pellet (P-10) was obtained in the same manner as in Example 1, except that (ISS-PC1) and (ISS-PC2) were mixed in a weight ratio of 60:40.
<Film Production>
The resin composition pellets (P-10) were used to obtain a 159 μm film in the same manner as in Example 11. The obtained film was subjected to various evaluations, and the results are shown in Table 1.

[Example 13]
<Film Production>
In Example 9, the thickness of the extruded film was adjusted to 157 μm. The obtained film was subjected to various evaluations, and the results are shown in Table 1.

[Comparative Example 1]
<Film Production>
Except for using the (ISS-PC1) pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Comparative Example 2]
Except for using the (ISS-PC2) pellets, the same procedures as in Example 1 were carried out and the same evaluations were carried out. The results are shown in Table 1.

[Comparative Example 3]
Except for using the acrylic resin (C) pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Comparative Example 4]
<Production of Resin Composition>
A resin composition pellet (P-11) was obtained in the same manner as in Example 1, except that the weight ratio of (ISS-PC1) and the acrylic resin (C) was 50:50.
<Film Production>
Except for using (P-11) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

[Comparative Example 5]
<Production of Resin Composition>
Resin composition pellets (P-12) were obtained in the same manner as in Example 1, except that the weight ratio of (ISS-PC1) to the acrylic resin (C) was 40:60.
<Film Production>
Except for using (P-12) as the resin composition pellets, the same operations and evaluations were carried out as in Example 1. The results are shown in Table 1.

(Aspect 2 of the present invention)
[Example 14]
<Production of Laminate>
Polycarbonate (manufactured by Teijin Ltd., trade name Panlite L-1225) was used as the thermoplastic resin, and melted in a single-screw extruder with a screw diameter of 65 mm, and the resin composition pellets (P-1) prepared by the above manufacturing method were melted in a single-screw extruder with a screw diameter of 40 mm, respectively, and laminated into two types of two layers by the multi-manifold method, and the polycarbonate resin was extruded through a T-shaped die with a set temperature of 260 ° C. and the resin composition (P-1) was extruded through a T-shaped die with a set temperature of 230 ° C., and the resulting sheet was cooled with a mirror-finished roll to obtain a laminate. In addition, the amount of molten resin discharged was adjusted so that the thickness of each layer was about 1st layer (resin composition layer) / 2nd layer (polycarbonate layer) = 50 / 250 (μm). Various evaluation results of the obtained laminate are shown in Table 2.

[Example 15]
<Production of Laminate>
Except for using (P-2) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 16]
<Production of Laminate>
Except for using (P-3) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 17]
<Production of Laminate>
Except for using (P-4) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 18]
<Production of Laminate>
Except for using (P-5) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 19]
<Production of Laminate>
Except for using (P-6) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 20]
<Production of Laminate>
Except for using (P-7) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 21]
<Production of Laminate>
Except for using (P-8) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 22]
<Production of Laminate>
Except for using (P-9) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Example 23]
<Production of Laminate>
Except for using (P-10) as the resin composition pellet for forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Comparative Example 6]
<Production of Laminate>
Except for using (ISS-PC1) pellets as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Comparative Example 7]
<Production of Laminate>
Except for using (ISS-PC2) pellets as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Comparative Example 8]
<Production of Laminate>
The same operations and evaluations were carried out as in Example 14, except that the acrylic resin (C) pellets were used as the resin composition pellets forming the first layer. The results are shown in Table 2.

[Comparative Example 9]
<Production of Laminate>
Except for using (P-11) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

[Comparative Example 10]
<Production of Laminate>
Except for using (P-12) as the resin composition pellets forming the first layer, the same operations as in Example 14 were carried out and the same evaluations were carried out. The results are shown in Table 2.

The sheets or films and laminates of the present invention have excellent transparency, chemical resistance, surface hardness, flexibility and adhesion, and are useful as transparent sheets for building materials, interior parts, display covers, etc., sheets for resin-coated metal plates, sheets for molding (vacuum/pressure molding, hot press molding, etc.), colored plates, transparent plates, shrink films, shrink labels, shrink tubes, automotive interior materials, resin glazing, home appliance components and office automation equipment components.

Claims (13)

A sheet or film formed from a resin composition containing: polycarbonate resin (A) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain 5 to 85 mol % of units (a), 15 to 95 mol % of units (b), and 0 to 80 mol % of units (c); and polycarbonate resin (B) whose repeating units are composed of units (a) represented by the following formula (1), units (b) represented by the following formula (2), and carbonate units (c) other than units (a) and units (b), and the total repeating units contain less than 5 mol % of units (a), 30 to 100 mol % of units (b), and 0 to 70 mol % of units (c).
(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer of 0 to 10.) The sheet or film according to claim 1, wherein the weight ratio of polycarbonate resin (A) to polycarbonate resin (B) is 5:95 to 95:5. The sheet or film according to claim 1 or 2, further comprising an acrylic resin (C) in the resin composition. The sheet or film according to claim 3, wherein the weight ratio of the total of the polycarbonate resin (A) and the polycarbonate resin (B) to the acrylic resin (C) is 10:90 to 90:10. The sheet or film according to any one of claims 1 to 4, having a haze of 2.5% or less. The sheet or film according to any one of claims 1 to 5, having a thickness of 30 μm or more and 500 μm or less. A laminate formed of a sheet layer formed of a thermoplastic resin (D) and a film layer formed on at least one side of the sheet layer, the film layer comprising a polycarbonate resin (A) having repeating units of a unit (a) represented by the following formula (1), a unit (b) represented by the following formula (2), and a carbonate unit (c) other than the units (a) and the units (b), the polycarbonate resin (A) containing 5 to 85 mol % of the unit (a), 15 to 95 mol % of the unit (b), and 0 to 80 mol % of the unit (c) in all repeating units, and a repeating unit (a) containing less than 5 mol % of the unit (a), 15 to 95 mol % of the unit (b), and 0 to 80 mol % of the unit (c) in all repeating units,
and a polycarbonate resin (B) containing 30 to 100 mol % of the unit (b) and 0 to 70 mol % of the unit (c).
(In the formula, W represents an alkylene group having 1 to 20 carbon atoms or a cycloalkylene group having 6 to 20 carbon atoms, R represents a branched or linear alkyl group having 1 to 20 carbon atoms or a cycloalkyl group having 6 to 20 carbon atoms which may have a substituent, and m represents an integer of 0 to 10.) The laminate according to claim 7, wherein the weight ratio of polycarbonate resin (A) to polycarbonate resin (B) is 5:95 to 95:5. The laminate according to claim 7 or 8, further comprising an acrylic resin (C) in the resin composition. The laminate according to claim 9, wherein the weight ratio of the total of the polycarbonate resin (A) and the polycarbonate resin (B) to the acrylic resin (C) is 10:90 to 90:10. A laminate according to any one of claims 7 to 10, having a haze of 1.0% or less. A laminate according to any one of claims 7 to 11, in which the thickness of the film layer is 25 μm or more and 250 μm or less. The laminate according to any one of claims 7 to 12, wherein the thickness of the sheet layer is 100 μm or more and 500 μm or less.