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WO2001053406A1 - Film thermoformable, ignifuge, transparent et amorphe, son procede de production et son utilisation - Google Patents

Film thermoformable, ignifuge, transparent et amorphe, son procede de production et son utilisation Download PDF

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Publication number
WO2001053406A1
WO2001053406A1 PCT/EP2001/000178 EP0100178W WO0153406A1 WO 2001053406 A1 WO2001053406 A1 WO 2001053406A1 EP 0100178 W EP0100178 W EP 0100178W WO 0153406 A1 WO0153406 A1 WO 0153406A1
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WO
WIPO (PCT)
Prior art keywords
weight
film
thermoplastic
flame retardant
film according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2001/000178
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German (de)
English (en)
Inventor
Ursula Murschall
Wolfgang Dietz
Günther Crass
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Mitsubishi Polyester Film GmbH
Original Assignee
Mitsubishi Polyester Film GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
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Publication of WO2001053406A1 publication Critical patent/WO2001053406A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
    • C08J5/18—Manufacture of films or sheets
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/04—Oxygen-containing compounds
    • C08K5/13—Phenols; Phenolates
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5313—Phosphinic compounds, e.g. R2=P(:O)OR'
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K5/00—Use of organic ingredients
    • C08K5/49—Phosphorus-containing compounds
    • C08K5/51—Phosphorus bound to oxygen
    • C08K5/53—Phosphorus bound to oxygen bound to oxygen and to carbon only
    • C08K5/5317—Phosphonic compounds, e.g. R—P(:O)(OR')2
    • C08K5/5333—Esters of phosphonic acids
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
    • C08J2367/00—Characterised by the use of polyesters obtained by reactions forming a carboxylic ester link in the main chain; Derivatives of such polymers
    • C08J2367/02—Polyesters derived from dicarboxylic acids and dihydroxy compounds

Definitions

  • thermoformable film Amorphous, transparent, flame-retardant, thermoformable film, process for its production and its use
  • the invention relates to an amorphous, transparent, flame retardant, thermoformable film made of a thermoplastic, the thickness of which is in the range from 30 ⁇ m to 1000 ⁇ m.
  • the film contains at least one flame retardant and optionally a hydrolysis stabilizer, which are soluble in the thermoplastic and are used in the form of a masterbatch in the production of the film. It is characterized by very good optical properties as well as good thermoformability and economical production.
  • the invention further relates to a method for producing this film and its use.
  • Transparent films made of crystallizable thermoplastics with a thickness in the range from 30 ⁇ m to 1000 ⁇ m are sufficiently known.
  • films are not flame-retardant and not thermoformable, so that neither the films nor the articles or molded articles produced therefrom are suitable for applications where deep-drawing capability and fire protection or flame retardancy are required.
  • DE-A 23 46 787 describes a flame-retardant phospholane-modified raw material.
  • the use of the raw material for oriented films and fibers is also claimed.
  • the raw material is very sensitive to hydrolysis and must be pre-dried very well. When drying the raw material with dryers that are state of the art Technically, the raw material sticks together, so that a film can only be produced under the most difficult conditions.
  • the object of the present invention was to avoid the disadvantages of the prior art.
  • the task is solved according to the invention by providing an amorphous, transparent, flame-retardant, thermoformable film with a thickness in the range from 30 ⁇ m to 1000 ⁇ m, which contains a crystallizable thermoplastic as the main component and is characterized in that it additionally contains at least one im Thermoplastic contains soluble flame retardant.
  • the invention further relates to a method for producing the film and its use.
  • the film according to the invention can be produced economically and has good optical properties
  • Thermoformability means that the film can be thermoformed or thermoformed on commercially available thermoforming machines without complex pre-drying to form complex and large-area shaped articles.
  • a flame-retardant effect means that the transparent film meets the conditions according to DIN 4102 Part 2 and in particular the conditions according to DIN 4102 Part 1 in a so-called fire protection test and can be classified in the building material class B 2 and in particular B1 of the flame retardant materials. Furthermore, the film should pass the UL test 94 "Vertical Burning Test for Flammability of Plastic Material" so that it can be classified in class 94 VTM-0. This means that the film no longer burns 10 seconds after the Bunsen burner is removed, no glowing is observed after 30 seconds and no dripping is found.
  • Good optical properties include, for example, high light transmission (> 80%), high surface gloss (> 100), low haze ( ⁇ 20%) and a low yellowness index (YID ⁇ 10).
  • Economic production includes the fact that the raw materials or the raw material components which are required for producing the film according to the invention can be dried using industrial dryers which meet the standards of the art. It is essential that the raw materials do not stick together and are not thermally broken down.
  • These state-of-the-art industrial dryers include vacuum dryers, fluidized bed dryers, fluid bed dryers, fixed bed dryers (shaft dryers). These dryers operate at temperatures between 100 and 170 ° C, where the previously used flame-retardant raw materials according to the prior art generally stick together and have to be mined, so that film production is not possible.
  • the raw material goes through a temperature range of approx. 30 ° C to 130 ° C at a reduced pressure of 50 mbar. After that, a so-called drying in a hopper at temperatures of 100 - 130 ° C and a residence time of 3 to 6 hours is required. Even here, the raw material previously used is extremely sticky.
  • No embrittlement at short temperatures means that after 100 hours of tempering at 100 ° C in a forced air oven, the film shows no embrittlement and no break when kinked.
  • the film according to the invention contains a crystallizable thermoplastic as the main component. Suitable crystallizable or partially crystalline thermoplastics are, for example, polyethylene terephthalate, polybutylene terephthalate, polyethylene naphthalate, with polyethylene terephthalate (PET) being preferred.
  • crystallizable thermoplastics are understood to mean crystallizable homopolymers, crystallizable copolymers, crystallizable compounds (mixtures), crystallizable recyclate and other variations of crystallizable thermoplastics.
  • the standard viscosity SV (DCE) of the crystallized thermoplastic measured in dichloroacetic acid according to DIN 53728, is 600 to 1000, preferably 700 to 900.
  • amorphous film is understood to mean films which, although the crystallizable thermoplastic has a crystallinity of between 30% and 65%, are not crystalline. Not crystalline, i.e. H. essentially amorphous means that the degree of crystallinity is generally below 5%, preferably below 2%, in particular 0%. Such a film is essentially in the unoriented state.
  • the film according to the invention can be either single-layer or multi-layer.
  • the film can also be coated with various copolyesters or adhesion promoters.
  • the film according to the invention contains at least one flame retardant which is metered in directly during film production using the so-called masterbatch technology, the concentration of the flame retardant being in the range from 0.5 to 30.0% by weight, preferably from 1.0 to 20.0 wt .-%, based on the weight of the layer of crystallizable thermoplastic, is.
  • a ratio of flame retardant to thermoplastic in the range of 60 to 40 wt .-% to 10 to 90 wt .-%.
  • Typical flame retardants include bromine compounds, chlorinated paraffins and other chlorine compounds, antimony trioxide, aluminum trihydrates, the halogen compounds being disadvantageous because of the halogen-containing by-products formed. Furthermore, the low light resistance of a film equipped with it, in addition to the development of hydrogen halide in the event of fire, is extremely disadvantageous.
  • Suitable flame retardants which are used according to the invention are, for example, organic phosphorus compounds such as carboxyphosphinic acids, their anhydrides and dimethyl methylphosphonate. It is essential to the invention that the organic phosphorus compound is soluble in the thermoplastic, since otherwise the required optical properties are not met.
  • Phenolic stabilizers, alkali / alkaline earth stearates and / or alkali / alkaline earth carbonates are generally used as hydrolysis stabilizers in amounts of 0.01 to 1.0% by weight. Phenolic stabilizers are preferred in an amount of 0.05 to 0.6% by weight, in particular 0.15 to 0.3% by weight and with a molar mass of more than 500 g / mol. Pentaerythrityl-tetrakis-3- (3,5-di-tertiary-butyl-4-hydroxyphenyl) propionate or 1,3,5-trimethyl-2,4,6-tris (3,5-di-tertiary-butyl-4-hydroxybenzyl) benzene are particularly advantageous.
  • the film according to the invention as the main component is a crystallizable thermoplastic, 1.0% by weight to 20.0% by weight of the thermoplastic organic phosphorus compound dimethyl methylphosphonate as a flame retardant and 0.01% by weight contains up to 1.0% by weight of a hydrolysis stabilizer.
  • the crystallizable thermoplastic has a diethylene glycol content of> 1.0% by weight, preferably> 1.2% by weight, in particular> 1.3% by weight and / or a polyethylene glycol content of> 1.0% by weight , preferably> 1.2% by weight, in particular> 1.3% by weight and / or an isophthalic acid content of 3% by weight to 10% by weight.
  • the surface gloss measured according to DIN 67530 (measuring angle 20 °) is greater than 100, preferably greater than 120, the light transmission L, measured according to ASTM D 1003, is more than 70%, preferably more than 72%, and the haze of the film is measured according to ASTM D 1003, is less than 20%, preferably less than 15%, in particular less than 10% by weight, which is surprisingly good for the flame retardancy achieved.
  • thermoforming process usually includes the steps of predrying, heating, molding, cooling, demolding, tempering.
  • the films according to the invention can surprisingly be thermoformed without prior predrying.
  • This advantage compared to thermoformable polycarbonate or polymethacrylate films, which require pre-drying times of 10 - 15 hours, depending on the thickness, at temperatures of 100 ° C to 120 ° C, drastically reduces the costs of the forming process. It was also very surprising that the detailed rendering of the molded body is excellent.
  • the film according to the invention which contains at least one flame retardant, can be either single-layer or multi-layer. It can also be coated with various copolyesters or adhesion promoters.
  • the film is composed of at least one core layer and at least one cover layer, a three-layer A-B-A or A-B-C structure being preferred in particular.
  • thermoplastic of the core layer has a similar standard viscosity and a similar DEG content and / or PEG content and / or IPA content as the thermoplastic of the cover layer (s) which adjoins (adjoins) the core layer.
  • the cover layers can also consist of a polyethylene naphthalate homopolymer or of polyethylene terephthalate-polyethylene naphthalate copolymers or compound.
  • the thermoplastics of the cover layers also have similar standard viscosities as the thermoplastic of the core layer.
  • the flame retardant and, if appropriate, the hydrolysis stabilizer are preferably contained in the top layer or layers.
  • the core layer can also be equipped with the additives as required.
  • the concentration of the additives here relates to the weight of the thermoplastics in the finished layer.
  • the amorphous, flame-retardant, thermoformable, multi-layer films produced with the known coextrusion technology become economically interesting in comparison to the monofilms completely finished in high concentrations, since significantly fewer additives are required.
  • the film can also be provided on at least one side with a scratch-resistant coating, with a copolyester or with an adhesion promoter.
  • the yellowness index of the film is not negatively influenced in comparison with a film that has not been treated within the scope of the measurement accuracy.
  • the film is characterized by excellent thermoformability, so that it can be reliably processed into molded articles on commercially available deep-drawing systems. This result is due to the synergistic effect of masterbatch technology, suitable pre-crystallization and pre-drying.
  • the film or the shaped body is without environmental pollution and without a noticeable deterioration in the optical and mechanical properties Easily recyclable, making it suitable, for example, for use as short-lived advertising signs, for trade fair construction and for other promotional items where fire protection and thermoformability are required.
  • films according to the invention in the thickness range from 30 to 2000 ⁇ m already meet the building material classes B2 and B1 according to DIN 4102 and UL test 94.
  • thermoformable film according to the invention can be produced, for example, in an extrusion line by known extrusion processes.
  • the flame retardant is added via the masterbatch technology.
  • the flame retardant and optionally the hydrolysis stabilizer are first fully dispersed in a carrier material.
  • the thermoplastic itself, for example polyethylene terephthalate or other polymers which are compatible with the thermoplastic, are suitable as carrier material. After metering into the thermoplastic for film production, the components of the masterbatch melt during the extrusion and are thus dissolved in the thermoplastic.
  • the DEG content and / or PEG content and / or IPA content of the thermoplastic are set by the raw material manufacturer during the polymerization process.
  • the grain size and the bulk density of the masterbatch is similar to the grain size and the bulk density of the thermoplastic, so that a homogeneous distribution and thus a homogeneous flame resistance can take place.
  • the films according to the invention can be prepared by known methods e.g. from a thermoplastic with, where appropriate, further raw materials and the flame retardant and / or other customary additives in a customary amount of 0.1 to max. 30% by weight can be produced both as monofoil and as multilayer, possibly coextruded, foils with the same or different surfaces, one surface being pigmented, for example, and the other surface containing no pigment. Likewise, one or both surfaces of the film can be provided with a conventional functional coating by known methods.
  • the masterbatch which contains the flame retardant and optionally the hydrolysis stabilizer, is pre-crystallized or pre-dried.
  • This predrying involves gradual heating of the masterbatch under reduced pressure (20 to 80 mbar, preferably 30 to 60 mbar, in particular 40 to 50 mbar) and with stirring and optionally post-drying at a constant, elevated temperature, likewise under reduced pressure.
  • the masterbatch is preferably batchwise at room temperature from a metering container in the desired mixture together with the polymers of the base and / or outer layers and possibly other raw material components in a vacuum dryer, which has a temperature range from 10 ° C to during the drying or dwell time 160 ° C, preferably 20 ° C to 150 ° C, in particular 30 ° C to 130 ° C passes.
  • the raw material mixture is mixed at 10 to 70 rpm, preferably 15 to 65 rpm, in particular stirred 20 to 60 rpm.
  • the raw material mixture pre-crystallized or pre-dried in this way is in a downstream likewise evacuated container at 90 to 180 ° C., preferably 100 ° C. to 170 ° C., in particular 110 ° C. to 160 ° C. for 2 to 8 hours, preferably 3 to 7 hours, especially post-dried for 4 to 6 hours.
  • the polymers or raw material mixtures are fed to an extruder or, in the case of multilayer films, to a plurality of extruders. Any foreign bodies or impurities that may be present can be filtered out of the polymer melt before extrusion.
  • the melt (s) are then formed into flat melt films in a mono nozzle or, in the multilayer case, in a multilayer nozzle, and in the multilayer case are layered one on top of the other.
  • the monofilm or the multilayer film is then pulled off with the aid of a cooling roll and, if appropriate, further rolls and solidified as an amorphous film.
  • the cooled, amorphous film is then hemmed and wound up.
  • the film can also be coated on at least one of its surfaces, so that the coating on the finished film has a thickness of 5 to 100 nm, preferably 20 to 70 nm, in particular 30 to 50 nm.
  • the coating is preferably applied in-line, ie during the film production process, expediently after solidification. It is particularly preferred to apply the "reverse gravure roll coating" method, in which the coatings can be applied extremely homogeneously in the layer thicknesses mentioned.
  • the coatings are preferably applied as a solution, suspension or dispersion, in particular as an aqueous solution, suspensions or dispersions
  • the coatings mentioned give the film surface an additional function, for example making the film sealable, printable, metallizable, sterilizable, antistatic or, for example, improve the aroma barrier or enable adhesion to materials which would otherwise not adhere to the film surface (for example photographic emulsion).
  • substances / compositions that provide additional functionality are examples of substances / compositions that provide additional functionality:
  • Acrylates such as e.g. are described in WO 94/13476, ethyl vinyl alcohols, PVDC, water glass (Na 2 Si0 4 ), hydrophilic polyesters (5-sodium sulfoisophthalic acid-containing PET / IPA polyesters as described, for example, in EP-A-0 144 878, US Pat.
  • vinyl acetates as described, for example, in WO 94/13 481, polyvinyl acetate, polyurethanes, alkali or alkaline earth metal salts of C 10 -C 18 fatty acids, butadiene copolymers with acrylonitrile or methyl methacrylate, methacrylic acid, acrylic acid or their esters.
  • the substances / compositions mentioned are applied as a dilute solution, emulsion or dispersion, preferably as an aqueous solution, emulsion or dispersion, to one or both film surfaces and the solvent is then volatilized. If the coatings are applied in-line, a heat treatment after solidification is usually sufficient to volatilize the solvent and to dry the coating. The dried coatings then have the desired layer thicknesses mentioned.
  • the films may-preferably in an off-line process with metals wwiiee AAlluummiinniiuumm ooddeerr kkeerraammiisscchheenn MMaatteerriiaalliieenn wwiiee SSiiOO xx xx ooddeerr AAll OO y - be coated. This improves their gas barrier properties in particular.
  • the film according to the invention is outstandingly suitable for a large number of different applications, for example for interior cladding, for trade fair construction and trade fair articles, as displays, for signs, for protective glazing of machines and vehicles, in the lighting sector, in the store and shelf construction, as promotional items, laminating medium, for greenhouses, roofs, outer cladding, covers, applications in the construction sector and illuminated advertising profiles, shadow mats, electrical applications. Due to the thermoformability, the film according to the invention is suitable for thermoforming any shaped body for indoor and outdoor applications.
  • the individual properties are measured in accordance with the following standards or methods.
  • DEG content / PEG content / IPA content is determined by gas chromatography after saponification in methanolic KOH and neutralization with aqueous HCl.
  • the surface gloss is measured at a measuring angle of 20 ° according to DIN 67530.
  • the light transmission is the ratio of the total transmitted light to the amount of incident light.
  • the light transmission is measured with the measuring device "® HAZEGARD plus" according to ASTM D 1003.
  • Haze is the percentage of the transmitted light that deviates by more than 2.5 ° on average from the incident light beam.
  • the image sharpness is determined at an angle of less than 2.5 °.
  • the turbidity is determined using the "HAZEGARD plus" measuring device in accordance with ASTM D 1003. surface defects
  • the surface defects are determined visually.
  • the intrinsic viscosity (IV) is calculated from the standard viscosity as follows
  • the fire behavior is determined according to DIN 4102 part 2, building material class B2 and according to DIN 4102 part 1, building material class B1 as well as according to UL test 94.
  • Yellowness index The yellowness index (YID) is the deviation from the colorlessness in the "yellow” direction and is measured in accordance with DIN 6167. Yellowness indexes (YID) of ⁇ 5 are not visually visible.
  • a 300 ⁇ m thick, amorphous, transparent film is produced, the main component of which is polyethylene terephthalate (standard viscosity SV (DCE) of 810), corresponding to an intrinsic viscosity IV (DCE) of 0.658 dl / g, DEG content of 1.6%.
  • DCE standard viscosity SV
  • the hydrolysis stabilizer and the flame retardant are metered in in the form of a masterbatch.
  • the masterbatch is composed of 20% by weight of flame retardant, 1% by weight of hydrolysis stabilizer and 79% by weight of polyethylene terephthalate.
  • the masterbatch has a bulk density of 750 kg / m 3 and a softening point of 69 ° C.
  • 50% by weight of the polyethylene terephthalate, 30% by weight of polyethylene terephthalate recyclate (standard viscosity SV (DCE) of 770) and 20% by weight of the masterbatch are filled into a dryer at room temperature from a separate dosing container, from the time of filling to At the end of the dwell time, a temperature range of 25 ° C to 130 ° C passes under reduced pressure.
  • the raw material mixture is stirred at 61 rpm during the approx. 4-hour residence time.
  • the pre-crystallized or pre-dried raw material mixture is dried in the downstream hopper, which is also under reduced pressure, at 140 ° C. for 4 hours.
  • the 300 ⁇ m monofilm is then produced using the extrusion process described.
  • the transparent PET film produced has the following property profile:
  • the film fulfills building material classes B2 and B1 according to DIN 4102 Part 2 / Part 1.
  • the film passes UL test 94.
  • a 300 ⁇ m thick, multi-layer PET film is produced with the layer sequence A-B-A, where B represents the core layer and A the cover layers.
  • the core layer is 290 ⁇ m thick and the two outer layers that cover the core layer are each 5 ⁇ m thick.
  • the polyethylene terephthalate used for core layer B is identical to that from Example 1, but does not contain any sylobloc.
  • the core layer contains 0.2% by weight of hydrolysis stabilizer and 5% by weight of flame retardant.
  • the hydrolysis stabilizer and the flame retardant are metered in in the form of a masterbatch as in Example 1.
  • the masterbatch is composed of 25% by weight of flame retardant, 1% by weight of hydrolysis stabilizer and 74% by weight of polyethylene terephthalate.
  • the hydrolysis stabilizer and the flame retardant are identical to those from Example 1.
  • the polyethylene terephthalate of the outer layer A is identical to the polyethylene terephthalate from Example 1, ie the outer layer raw material is equipped with 0.1% by weight of Sylobloc.
  • the top layers contain no hydrolysis stabilizer and no flame retardant.
  • 50% by weight of polyethylene terephthalate, 30% by weight of polyethylene terephthalate recyclate and 20% by weight of the masterbatch are precrystallized in accordance with Example 1, predried and post-dried.
  • the top layer raw material does not undergo any special drying.
  • a 300 ⁇ m thick film with the layer sequence A-B-A is produced, which shows the following properties:
  • the film fulfills building material class B2 and B1 according to DIN 4102 part 2 and part 1.
  • the film passes UL test 94.
  • Example 2 a 400 ⁇ m thick ABA film is produced, the core layer B being 390 ⁇ m and the outer layers A each 5 ⁇ m thick.
  • the core layer B contains only 5% by weight of the masterbatch from Example 2.
  • the cover layers are identical to those from Example 2, but contain 20% by weight of the masterbatch, which was used only for the core layer in Example 2.
  • the raw materials and the masterbatch for the core layer and the cover layers are pre-crystallized, pre-dried and post-dried in accordance with Example 1.
  • the multi-layer 400 ⁇ m film produced using coextrusion technology has the following property profile:
  • the film fulfills building material classes B2 and B1 according to DIN 4102 part 2 and part 1.
  • the film passes UL test 94. thermoformability
  • the films from Examples 1 to 3 can be produced on commercially available thermoforming machines, e.g. from Illig, thermoformed into preforms without pre-drying.
  • the detail reproduction of the molded bodies is excellent with a homogeneous surface.
  • Example 1 is repeated. However, the film is not equipped with a masterbatch, i.e. H. the film contains no hydrolysis stabilizer and no flame retardant.
  • the transparent PET film produced has the following property profile:
  • the unequipped film does not meet the tests according to DIN 4102 part 1 and part 2 and the UL test 94.

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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)
  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Manufacture Of Macromolecular Shaped Articles (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)

Abstract

La présente invention concerne un film thermoformable, ignifugé, transparent et amorphe, qui est constitué d'une matière thermoplastique, dont l'épaisseur est située entre 30 mu m et 1000 mu m. Ce film contient au moins un agent ignifugeant et éventuellement un stabilisateur d'hydrolyse, qui sont solubles dans la matière thermoplastique et sont utilisés sous forme d'un mélange maître lors de la production dudit film. Ce film est caractérisé par de très bonnes propriétés optiques, par une bonne thermoformabilité et par une production économique. La présente invention concerne également un procédé de production de ce film, ainsi que son utilisation.
PCT/EP2001/000178 2000-01-20 2001-01-10 Film thermoformable, ignifuge, transparent et amorphe, son procede de production et son utilisation Ceased WO2001053406A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2000102158 DE10002158A1 (de) 2000-01-20 2000-01-20 Amorphe, transparente, flammhemmend ausgerüstete, thermoformbare Folie, Verfahren zu ihrer Herstellung und ihre Verwendung
DE10002158.1 2000-01-20

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WO2001053406A1 true WO2001053406A1 (fr) 2001-07-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342746A1 (fr) * 2002-03-06 2003-09-10 Mitsubishi Polyester Film GmbH Films capacitifs. biaxialement orientés, constitués de thermoplastes cristallisables et résistants à l'hydrolyse, leur procédé de production et leur utilisation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10148306A1 (de) * 2001-09-29 2003-04-24 Mitsubishi Polyester Film Gmbh Hydrolysebeständig ausgerüstete, transparente, amorphe Folie aus einem kristallisierbaren Thermoplasten und Verfahren zu ihrer Herstellung

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Publication number Priority date Publication date Assignee Title
JPS5867411A (ja) * 1981-10-19 1983-04-22 Teijin Ltd ポリエステルフイルムの製型法
GB2344596A (en) * 1998-12-09 2000-06-14 Du Pont Flame retarded and UV light stabilised polyester film
EP1038905A2 (fr) * 1999-03-26 2000-09-27 Mitsubishi Polyester Film GmbH Film trasnparent stabilisé aux UV en matière thermoplastique cristallisable

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5867411A (ja) * 1981-10-19 1983-04-22 Teijin Ltd ポリエステルフイルムの製型法
GB2344596A (en) * 1998-12-09 2000-06-14 Du Pont Flame retarded and UV light stabilised polyester film
EP1038905A2 (fr) * 1999-03-26 2000-09-27 Mitsubishi Polyester Film GmbH Film trasnparent stabilisé aux UV en matière thermoplastique cristallisable

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* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 198322, Derwent World Patents Index; Class A23, AN 1983-52522K, XP002165683 *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1342746A1 (fr) * 2002-03-06 2003-09-10 Mitsubishi Polyester Film GmbH Films capacitifs. biaxialement orientés, constitués de thermoplastes cristallisables et résistants à l'hydrolyse, leur procédé de production et leur utilisation

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DE10002158A1 (de) 2001-07-26

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