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WO1998017725A1 - Melanges polyester a base de 1,4-cyclohexanedimethanol - Google Patents

Melanges polyester a base de 1,4-cyclohexanedimethanol Download PDF

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Publication number
WO1998017725A1
WO1998017725A1 PCT/US1997/018724 US9718724W WO9817725A1 WO 1998017725 A1 WO1998017725 A1 WO 1998017725A1 US 9718724 W US9718724 W US 9718724W WO 9817725 A1 WO9817725 A1 WO 9817725A1
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Prior art keywords
composition
polyester
acid
weight
polycarbonate
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Ceased
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PCT/US1997/018724
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English (en)
Inventor
Hsinjin Edwin Yang
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Eastman Chemical Co
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Eastman Chemical Co
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Publication date
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Publication of WO1998017725A1 publication Critical patent/WO1998017725A1/fr
Anticipated expiration legal-status Critical
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    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L67/00—Compositions of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Compositions of derivatives of such polymers
    • C08L67/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L69/00—Compositions of polycarbonates; Compositions of derivatives of polycarbonates

Definitions

  • the present invention relates to polyester blends, and more particularly to blends containing polyester or copoh esteis.
  • Polyesters such as poly(ethylene terephthalate) (“PET”) and PET copolyesters containing modifying dibasic acids and/or glycols are widely used in the form of molded articles, bottles, containers, food trays, fibers, sheeting and film.
  • Other polymers are often blended with the polyesters to obtain materials with special properties such as improved impact strength, and/or improved physical properties at low and/or high temperatures.
  • Certain polycarbonates, for example, can sometimes be blended with polyesters to improve the physical properties of the polyesters.
  • Impact modifiers containing polyorganosiloxane rubbers can also sometimes be incorporated into such blends to improve the impact properties of the blends. It is unusual, however, to find polymers that are compatible and which can be blended to provide such enhanced physical properties.
  • Hongo et al. in U.S. Patent 4,888,388, describe polycarbonate resin compositions that contain a saturated polyester resin such as PET or poly(butylene terephthalate), and a polyorganosiloxane rubber-g-vinyl monomer copolymer.
  • the polyester resin does not include residues of 1 ,4- cyclohexanedimethanol.
  • Belfoure et al. in U.S. Patent 5,1 16,905, describe blends comprising an aromatic polycarbonate, a polyester resin that contains some 1 ,4-cyclohexanedimethanol, and a diene based, graft core-shell copolyme r.
  • the core-shell copolymer is not polyorganosiloxane based.
  • the polyester predominantly contains residues of ethylene glycol, not 1,4- cvclohexanedimethanol.
  • the invention provides a composition comprising an aromatic polycarbonate, a polyester comprising the residue of one or more dicarboxylic acids and the residue of 1 ,4-cyclohexanedimethanol, and a core-shell impact modifier comprising a polyorganosiloxane-co-alkyl (meth)acrylate core and a vinyl shell.
  • the invention further provides an article comprising the composition.
  • the invention provides a method for using the composition to form an article comprising melt mixing the composition at from about 255° C to about 350° C to form an article.
  • the invention provides an article formed by this method of using the composition.
  • X and Y are present at a weight ratio of 2:5, and are present in such ratio regardless of whether additional components are contained in the compound.
  • Ranges are often expressed herein as from about one particular value, and/or to about another particular value. When such a range is expressed, it is to be understood that a more preferred range is typically from the one particular value and/or to the other particular value. Similarly, when values are expressed as approximations, by use of the antecedent "about,” it will be understood that the particular value is typically more preferred
  • a residue of a chemical species refers to the moiety that is the reaction product of the chemical species in a particular reaction scheme or subsequent formulation or chemical product, regardless of whether the moiety is actually obtained from the chemical species.
  • an ethylene glycol residue in a polyester refers to one or more -OCH 2 CH 2 O- units in the polyester, regardless of whether ethylene glycol was used to prepare the polyester.
  • a sebacic acid residue in a polyester refers to one or more -CO(CH 2 ) 8 CO- moieties in the polyester, regardless of whether the residue is obtained by reacting sebacic acid or an ester, anhydride, or other reactive equivalent thereof to obtain the polyester.
  • an effective amount of a compound or property as provided herein is meant such amount as is capable of performing the function of the compound or property for which an effective amount is expressed.
  • the exact amount required will vary from process to process. depending on recognized variables such as the compounds employed and the processing conditions observed Thus, it is not possible to specify an exact “effective amount " However, an appropriate effective amount may be determined by one of ordinary skill in the art using only routine experimentation
  • polymer and "resin” are used interchangeably herein, and each term is meant to include any of various substances made by chemical synthesis, especially those used in the making of plastics, any compound formed by polymerization, and any compound containing two or more of such polymers or resins.
  • modified is often used herein to describe polymers and means that a particular monomeric unit that would typically make up the pure polymer has been replaced by another monomeric unit that shares a common polymerization capacity with the replaced monomeric unit.
  • diol residues for ethylene glycol residues in poly(ethylene glycol)
  • the poly( ethylene glycol) will be “modified” with the diol.
  • the poly(ethylene glycol) is modified with a mole percentage of the diol, then such a mole percentage is based upon the total number of moles of ethylene glycol that would be present in the pure polymer but for the modification.
  • the other diol and ethylene glycol residues are present in equimolar amounts.
  • copolyesters includes copolyesters.
  • polycarbonate includes copolycarbonates.
  • polyorganosiloxane includes copolyorganosiloxanes.
  • (meth)acrylate includes both acrylates and methacrylates.
  • polyesters When referenced herein, the inherent viscosity of polyesters is measured in 60/40 phenol/tetrachloroethane.
  • the invention relates to compositions that comprise: polyesters in which 1,4-cyclohexanedimethanol residues are incorporated; an aromatic polycarbonate; and a core-shell impact modifier comprising a polyorganosiloxane-co-alkyl (meth)acrylate core and a vinyl shell. It has been surprisingly found that the 1 ,4-cyclohexanedimethanol lends to the compositions comprising the polyester very desirable impact strength, low temperature properties, chemical resistance, scratch resistance, and heat distortion properties at elevated temperatures.
  • Polyesters used in the compositions of the present invention typically comprise an effective amount of 1 ,4-cyclohexanedimethanol ("CHDM") residues to obtain the properties desired.
  • the 1,4-cyclohexanedimethanol residues may be in the cis- or trans- form or as cis-/trans- mixtures.
  • the polyesters generally comprise residues of from about 1.5 to about 100 mol percent 1,4 cyclohexanedimethanol.
  • the polyesters comprise residues of from about 20 to about 90 mol percent 1 ,4 cyclohexanedimethanol, and even more preferably the polyesters comprise residues of from about 60 to about 90 mol percent 1,4 cyclohexanedimethanol.
  • Such mole percentages are based upon the total moles of glycol residues present in the polyester.
  • Polyesters are defined to include copolyesters, and the polyester used in the invention may suitably comprise the residue of one or more glycols other than 1 ,4-cyclohexanedimethanol.
  • Particularly suitable modifying glycols typically have from 2 to about 16 carbon atoms.
  • Preferred glycols with which to modify the polyesters include 1,3-propanediol, 1,2-propanediol, 1,4-butanediol, 1 ,6-hexanediol, 1 ,10-decanediol, diethylene glycol, neopentyl glycol, 2,2,4,4- tetramethyl-l ,3-cyclobutanediol, and mixtures thereof.
  • a more preferred glycol with which to modify the polyester is ethylene glycol.
  • the polyesters of the present invention may similarly comprise residues of one or more dicarboxylic acids or their lower alkyl esters, such as the methyl esters.
  • the one or more dicarboxylic acids can be aliphatic or aromatic.
  • the polyester comprises residues of one or more dicarboxylic acids that is aromatic.
  • aromatic dicarboxylic acids include terephthalic acid, isophthalic acid, naphthalenedicarboxylic acid, and mixtures thereof.
  • compositions of the present invention comprise residues of modifying acids, and preferably up to 25 mol percent of residues of one or more modifying acids containing from 2 to about 40 carbon atoms.
  • Particularly suitable modifying acids with which to modify the polyester include succinic acid, glutaric acid, suberic acid, sebacic acid, dimer acid, isophthalic acid, 1 ,4-cyclohexanedicarboxylic acid, terephthalic acid, naphthalenedicarboxylic acid, and mixtures thereof.
  • a particularly suitable acid with which to modify PCT is naphthalenedicarboxylic acid comprising or, in another embodiment consisting essentially of, a 2,6-, 2,7-, 1,4-, or 1,5- isomer.
  • compositions of the present invention comprise a poly(l,4-cyclohexylenedimethylene terephthalate) polyester ("PCT").
  • PCT poly(l,4-cyclohexylenedimethylene terephthalate) polyester
  • a particularly suitable PCT polyester is a copolyester that comprises at least 75 mol percent of terephthalic acid residues.
  • the polyester is a PCT copolyester comprising at least 90 mol percent of terephthalic acid residues. Such mol percentages are based upon the total number of dicarboxylic acid residues present in the polyester.
  • compositions of the present invention comprise a poly(1.4-cyclohexylenedimethylene naphthalenedicarboxylate) polyester (“PCN").
  • PCN polyesters are copolyesters comprising at least 75 mol percent of naphthalenedicarboxylic acid residues.
  • the PCN polyesters comprise 2,6-, 2,7-, 1 ,4-, and/or 1,5- naphthalenedicarboxylic acid isomer residues, and even more preferably the naphthalene dicarboxylic residues of the PCN polyesters consist essentially of a
  • the polyesters included in the compositions of the present invention may further comprise one or more branching agents to improve the viscosity or workability of the polyester, typically up to 2 mol percent.
  • branching agents include trimellitic acid, trimellitic anhydride, pyromellitic dianhydride, trimethylolpropane, pentaerythritol, and mixtures thereof.
  • Particularly suitable polyesters have an inherent viscosity of from about 0.4 to about 1.5.
  • Aromatic polycarbonate resins which are suitable for use in the present invention are well known in the art and are generally commercially available. These polycarbonates may be prepared by a variety of conventional and well known processes which include transesterification, melt polymerization, interfacial polymerization, etc.
  • the polycarbonates are generally prepared by reacting a dihydric phenol with a carbonate precursor, such as for example, phosgene.
  • a carbonate precursor such as for example, phosgene.
  • Other carbonate precursors include, for example, dibutyl carbonate, diphenyl carbonate, dimethyl carbonate, and mixtures thereof.
  • Preferred dihydric phenols for preparing the aromatic polycarbonates include, for example, resorcinol, hydroquinone, 2,2-bis(4-hydroxyphenyl) pentane, bis(2-hydroxyphenyl) methane, bis(4-hydroxyphenyl) methane, 2,4 ' -
  • polycarbonates of the present invention are described in, for example, U.S. Pat. Nos. 4,018,750, 4,123,436 and 3,153,008. However, other known processes for producing polycarbonates are suitable. Particularly preferred polycarbonates are aromatic polycarbonates, which are prepared, for example, by reacting Bisphenol A with phosgene. A homopolymer of Bisphenol A with phosgene is sold by General Electric, Bayer Chemicals, and Dow Chemicals, under the trade names LEXAN, MAKROLON, and CALIBRE, respectively.
  • Preferred polycarbonates have an inherent viscosity between about 0.35- 0.55 dl/gram. Preferred polycarbonates also have a molecular weight of from about 10,000 to about 150,000.
  • Preferred impact modifiers are available generally from Mitsubishi Rayon Company, Ltd., of Tokyo, Japan, under the name METABLEN, and include S-
  • Each of these impact modifiers contains a polyorganosiloxane co-alkyl (meth)acrylate core and a vinyl shell.
  • Core-shell impact modifiers can be prepared by processes generally known in the art, including the processes disclosed in U.S. Patents 3,808,180. 4,096,202, 4,404,161, and 4.888,388, the disclosure from each is hereby incorporated by this reference. As stated in U.S.
  • the vinyl shell can be graft polymerized onto the coie material in a single step or in multiple steps by radical polymerization, followed by pouring the polymer into hot water in which a metal salt is dissolved, followed by salting out and coagulation.
  • a preferred impact modifier is METABLEN S-2001 which is obtained typically as a white granular powder of about 280 ⁇ m particle size and 1.17-1.20 specific gravity. These powders have a bulk density of about 0.45 g/cc.
  • the polyorganosiloxane which makes up the impact modifier may be prepared by emulsion polymerization using an organosiloxane and a cross-linking agent as known in the art, and as described by Hongo, et al., in U.S. Patent 4,888,388, the disclosure from which is hereby incorporated by reference.
  • the organosiloxane may be chosen from various types of cyclic siloxanes having a ring structure of at least 3 members. Cyclosiloxanes having ring structures with from 3 to 6 members are especially preferred.
  • hexarnethylcyclotrisiloxane, octamethylcyclotetrasiloxane, decamethylcyclopentasiloxane, dodecamethylcyclohexasiloxane, trimethyltriphenylcyclotrisiloxane, tetramethyltetraphenylcyclotetrasiloxane and octaphenylcyclotetrasiloxane are preferred.
  • These siloxanes may be used alone or in combination as a mixture of 2 or more different types.
  • the organosiloxane comprises at least 50% by weight, and preferably at least 70% by weight, of the polyorganosiloxane-co-alkyl (meth)acrylate.
  • the alkyl (meth)acrylate used to form the polyorganosiloxane-co-alkyl (meth)acrylate can be an acryl acrylate such as methyl acrylate, ethyl acrylate, n- propyl acrylate, n-butyl acrylate, or 2-ethylhexyl acrylate, or an alkyl methacrylate such as hexyl methacrylate, 2-ethylhexyl methacrylate or n-lauryl methacrylate. It is particularly preferred to use n-butylacrylate. Methods of preparing these polyorganosiloxane-co-alkyl (meth)acrylates are described by Hongo. et al., in U.S. Patent 4,888.388 (previously incorporated by reference).
  • the vinyl shell of the impact modifiers is graft polymerized onto the polyorganosiloxane-co-alkyl (meth)acrylate by graft polymerization according to processes known in the art, including the method described by Hongo, et al., in U.S. Patent 4,888,388.
  • the vinyl monomer to be graft polymerized onto the polyorganosiloxane-co-alkyl acrylate may be various vinyl monomers including: alkenyl aromatic compounds such as styrene, alpha-methylstyrene and vinyl toluene; methacrylic acid esters such as methyl methacrylate or 2-ethylhexyl methacrylate; acrylic acid esters such as methyl acrylate, ethyl acrylate and butyl acrylate; and vinyl cyanide compounds such as acrylonitrile and methacrylonitrile. These vinyl monomers may be used alone or in combination as a mixture of 2 or more different kinds.
  • a particularly suitable vinyl shell comprises methyl methacrylate or methyl methacrylate-co-vinyl.
  • the polyorganosiloxane and alkyl (meth)acrylate are preferably present in the polyorganosiloxane-co-alkyl (meth)acrylate in a range of from about 10 to about 90% by weight (wherein the total amount of the 2 components is 100% by weight). It is particularly preferred that each of the components is within a range of from about 20 to about 80% by weight.
  • the proportions of the polyorganosiloxane based core and the vinyl based shell in the impact modifier are preferably such that the core is from 30 to 95% by weight, preferably from 40 to 90% by weight, and the shell is from 5 to 70% by weight, preferably from 10 to 60% by weight, based on the weight of the impact modifier.
  • compositions of the present invention typically comprise from about 9 to about 90 parts by weight of the polycarbonate, from about 9 to about 90 parts by weight of the polyester, and from about 1 to about 20 parts by weight of the core-shell impact modifier.
  • compositions of the present invention comprise from about 25 to about 70 parts by weight of the polycarbonate, from about 25 to about 70 parts by weight of the polyester, and from about 5 to about 20 parts by weight of the core-shell impact modifier.
  • compositions of the present invention comprise from about 40 to about 50 parts by weight of the polycarbonate, from about 40 to about 50 parts by weight of the polyester, and from about 5 to about 15 parts by weight of the core-shell impact modifier.
  • compositions of the present invention may further comprise one or more additives, typically from about 0.01 to about 10 parts by weight.
  • Typical additives that are included in the compositions include, for example, colorants, glass fibers, fillers, antioxidants, stabilizers, mold release agents, carbon black, and mixtures thereof.
  • the invention provides articles comprising the various compositions of the present invention.
  • Particularly suitable articles include, for example, extruded articles, injection molded articles, and compression molded articles.
  • Especially suitable articles include fibers, bottles, containers, sheeting, and film.
  • the invention provides a method for using the various compositions of the present invention to form an article.
  • the composition is preferably melt mixed at from about 255° C to about 350° C to form an article.
  • the composition is melt mixed at from about 260° C to about 300° C.
  • the process may preferably be employed with polycarbonate, polyester, and core-shell impact modifier in the form of pellets.
  • the pellets can contain either mixtures of the ingredients, or each of the pellets can contain only one of the ingredients.
  • the melt mixing is preferably carried out in extruders. Brabender Plastographs. and other suitable melt mixing equipment.
  • the invention provides an article formed by the process of this invention.
  • Such articles are preferably extruded articles, injection molded articles, and compression molded articles. More particularly, such articles preferably include fibers, bottles, containers, sheeting, and film.
  • compositions of the present invention can be used during the manufacture of various products, and can also be incorporated into many final products.
  • the compositions can be raw materials that are further processed before a final product is prepared, and the compositions can also be present as the final article.
  • the compounds and components of the invention may be readily synthesized and prepared using techniques generally known to synthetic organic or polymer chemists. Suitable experimental methods for making and deriving the polymers are described, for example, in the references cited in this document, the disclosures of which being hereby incorporated by this reference for their general teachings and for their synthesis teachings. Methods for making specific and preferred compositions of the present invention are described in deta i l i n examples set forth below.
  • a pellet blend containing 82.0 lbs. of a PCT homopolymer (30/70 cis/trans isomer ratio; I.V. 0.77), 9.0 lbs of METABLEN S-2001 core-shell silicone/acrylic impact modifier supplied by Mitsubishi Rayon Company Ltd., and 9.0 lbs of polycarbonate (Dow Calibre PC200-10) were prepared and dried overnight at 80 ° C.
  • the dried pellet blend was melt mixed in a 40mm. Werner and Pfleiderer twin screw extruder at 265'C, then cooled in a water bath and pelletized. These pellets were dried and then injection molded in a Toyo Injection Molding Machine using a melt temperature of 270-290 ° C and a mold temperature of 25-50°C.
  • the specimens had a good appearance, good chemical resistance, and scratch resistance.
  • the specimens had a heat distortion temperature (HDT) of 72°C at 264 psi, a HDT of 88°C at 66 psi, a notched Izod impact strength of 4.8 ft.lb./in. at 23°C and an Izod value of 2.0 ft.lb./in at - 40°C.
  • HDT heat distortion temperature
  • Example 1 The procedure of Example 1 was repeated using PET polyester (I.V. 0.76) instead of the PCT polyester. This blend was injection molded at a melt temperature of 280°C to provide test specimens. The specimens had a notched
  • Izod impact strength of 2.7 ft.lb./in. at 23°C. and 1.4 ft.lb./in. at -40°C.
  • the specimens also were readily scratched and had a heat distortion temperature of only 60°C at 264 psi., and 65°C at 66 psi.
  • Example 2 Using the procedure of Example 1. a melt blend was prepared from 77.3 lbs. of PCT copolyester modified with 19 mole percent ethylene glycol (l.V. 0.75), 9.0 lbs of METABLEN S-2001 impact modifier and 13.7 lbs of polycarbonate (Dow Calibre PC 300-10). Pellets of this blend were dried and injection molded into test specimens at 280°C (melt temperature). The specimens had good appearance and scratch resistance. The specimens exhibited a heat distortion temperature of 67°C at 264 psi and 78°C at 66 psi. Their notched Izod impact values were 20.0 ft.lb./in. at 23°C and 2.95 ft.lb./in. at - 40°C.
  • Example 2 Using the procedure in Example 1, a melt blend was prepared from 68.3 lbs of PCT copolyester modified with 38 mole percent ethylene glycol (I.V. 0.75), 9.0 lbs. of METABLEN S-2001 impact modifier and 22.7 lbs. of polycarbonate (Miles MK2608, a Makrolon polycarbonate from Bayer Chemicals). Specimens molded at a melt temperature of 285°C had a good appearance, good chemical resistance, and good scratch resistance. They had a heat distortion temperature of 75°C at 264 psi and 87°C at 66 psi. These specimens exhibited notched Izod impact strength values of 20.0 ft.lb./in. at 23°C and 5.9 ft.lb./in. at -40°C.
  • Example 2 Using the procedure of Example 1, a melt blend was prepared from 45.5 lbs. of PCT copolyester modified with 19 mole percent ethylene glycol (I.V. 0.75), 9.0 lbs. of METABLEN S-2001, and 45.5 lbs of polycarbonate (General
  • Example 2 Using the procedure of Example 1. a melt blend was prepared from 22.7 lbs of PCT copolyester modified with 69 mole percent ethylene glycol (I.V. 0.76). 9.0 lbs of METABLEN S-2001 impact modifier and 68.3 lbs of polycarbonate (Dow Calibre PC200- 10). Specimens molded at 275°C had good appearance and scratch resistance. These specimens had a heat distortion temperature of 95°C at 264 psi and 1 17°C at 66 psi. They exhibited notched Izod impact strength values of 16.5 ft.lb./in. at 23°C and 10.3 ft.lb./in. at -40°C.
  • Example 2 Using the procedure of Example 1. a melt blend was prepared from 9.0 lbs. of PCT copolyester modified with 96.5 mole % ethylene glycol (I.V. 0.76), 9.0 lbs. of METABLEN S-2001 impact modifier, and 82.0 lbs of polycarbonate (Dow Calibre PC 300-10). Specimens molded at 290° had good appearance and scratch resistance. These specimens had a heat distortion temperature of 113°C at 264 psi and 129°C at 66 psi. They exhibited notched Izod impact strength values of 15 ft.lb./in. at 23°C and 1 1 ft.lb./in. at -40°C.

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  • Chemical & Material Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

Composition qui comprend un polycarbonate aromatique, un polyester contenant les restes d'un ou plusieurs acides dicarboxyliques et les restes de 1,4-cyclohexanediméthanol, ainsi qu'un modificateur d'impact noyau-enveloppe comportant un noyau de (méth)acrylate de polyorganosiloxane-co-alkyle et une enveloppe de vinyle. La présente invention concerne un article contenant ladite composition. Dans un autre mode de réalisation, elle concerne un procédé d'utilisation de ladite composition pour former un article, qui consiste à mélanger la composition en fusion à une température située entre environ 225 °C et environ 350 °C pour former un article.
PCT/US1997/018724 1996-10-21 1997-10-21 Melanges polyester a base de 1,4-cyclohexanedimethanol Ceased WO1998017725A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US2876796P 1996-10-21 1996-10-21
US60/028,767 1996-10-21
US91502097A 1997-08-20 1997-08-20
US08/915,020 1997-08-20

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073377A1 (fr) * 1999-06-01 2000-12-07 Bayer Aktiengesellschaft Matieres a mouler en polycarbonate, a demoulage facile, et corps moules et demi-produits fabriques a partir de ces matieres et presentant de bonnes caracteristiques de glissement
WO2006049826A1 (fr) * 2004-10-28 2006-05-11 Eastman Chemical Company Nouvelles formules de copolyesters présentant une résistance aux chocs améliorée à basse température
US7297736B2 (en) * 2004-10-28 2007-11-20 Eastman Chemical Company Neopentyl glycol containing polyesters blended with polycarbonates
US7687577B2 (en) 2007-07-25 2010-03-30 Sabic Innovative Plastics Ip B.V. Thermoformable polycarbonate/polyester compositions and uses
US20120053271A1 (en) * 2010-08-24 2012-03-01 Bayer Materialscience Ag Impact-modified polyester/polycarbonate compositions with improved elongation at break
CN102372824A (zh) * 2010-08-25 2012-03-14 广州熵能聚合物技术有限公司 有机硅氧烷交联弹性聚合物形成的抗冲击改进剂及制备方法与应用
US9296894B2 (en) 2013-03-13 2016-03-29 Sabic Global Technologies B.V. Reinforced polyestercarbonate, polycarbonate-polydiorganosiloxane, poly(butylene-terephthalate) blend, and article comprising same
EP3150669A4 (fr) * 2014-05-26 2017-11-22 Samsung Electronics Co., Ltd. Composition polymère, article moulé et procédé de fabrication de celui-ci
WO2025112572A1 (fr) * 2023-11-29 2025-06-05 Eastman Chemical (China) Co., Ltd. Compositions ignifuges à ténacité élevée de copolyester

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EP0273151A2 (fr) * 1986-12-30 1988-07-06 General Electric Company Compositions de polycarbonate, de poly(téréphtalate de cyclohexane diméthylène), de copolymère d'acrylate type noyau-manteau, résistant au choc à basse température
JPH04325553A (ja) * 1991-04-25 1992-11-13 Mitsubishi Kasei Corp ポリカーボネート樹脂組成物

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000073377A1 (fr) * 1999-06-01 2000-12-07 Bayer Aktiengesellschaft Matieres a mouler en polycarbonate, a demoulage facile, et corps moules et demi-produits fabriques a partir de ces matieres et presentant de bonnes caracteristiques de glissement
WO2006049826A1 (fr) * 2004-10-28 2006-05-11 Eastman Chemical Company Nouvelles formules de copolyesters présentant une résistance aux chocs améliorée à basse température
US7297736B2 (en) * 2004-10-28 2007-11-20 Eastman Chemical Company Neopentyl glycol containing polyesters blended with polycarbonates
US7687577B2 (en) 2007-07-25 2010-03-30 Sabic Innovative Plastics Ip B.V. Thermoformable polycarbonate/polyester compositions and uses
CN103189448B (zh) * 2010-08-24 2015-09-09 拜耳知识产权有限责任公司 具有改进的断裂伸长的抗冲改性的聚酯/聚碳酸酯组合物
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