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WO1998009799A1 - Plaque cristallisable transparente amorphe et corps moule fabrique a partir de celle-ci et presentant une thermostabilite elevee et homogene - Google Patents

Plaque cristallisable transparente amorphe et corps moule fabrique a partir de celle-ci et presentant une thermostabilite elevee et homogene Download PDF

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Publication number
WO1998009799A1
WO1998009799A1 PCT/EP1997/004689 EP9704689W WO9809799A1 WO 1998009799 A1 WO1998009799 A1 WO 1998009799A1 EP 9704689 W EP9704689 W EP 9704689W WO 9809799 A1 WO9809799 A1 WO 9809799A1
Authority
WO
WIPO (PCT)
Prior art keywords
plate
amorphous
heat
polyethylene terephthalate
crystallization
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/EP1997/004689
Other languages
German (de)
English (en)
Inventor
Ursula Murschall
Rainer Brunow
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aventis Research and Technologies GmbH and Co KG
Original Assignee
Aventis Research and Technologies GmbH and Co KG
Hoechst Research and Technology Deutschland GmbH and Co KG
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
Publication date
Application filed by Aventis Research and Technologies GmbH and Co KG, Hoechst Research and Technology Deutschland GmbH and Co KG filed Critical Aventis Research and Technologies GmbH and Co KG
Priority to AU46190/97A priority Critical patent/AU4619097A/en
Publication of WO1998009799A1 publication Critical patent/WO1998009799A1/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
    • C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
    • C08K3/00—Use of inorganic substances as compounding ingredients
    • C08K3/34—Silicon-containing compounds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C51/00—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor
    • B29C51/002—Shaping by thermoforming, i.e. shaping sheets or sheet like preforms after heating, e.g. shaping sheets in matched moulds or by deep-drawing; Apparatus therefor characterised by the choice of material
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
    • B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
    • B29C2035/0822—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using IR radiation
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2067/00—Use of polyesters or derivatives thereof, as moulding material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
    • B29K2995/00—Properties of moulding materials, reinforcements, fillers, preformed parts or moulds
    • B29K2995/0037—Other properties
    • B29K2995/0041—Crystalline

Definitions

  • the invention relates to a plate which contains a crystallizable thermoplastic as the main component, a molded article which can be produced from this amorphous plate, a process for its production and its use
  • Amorphous plates made of a crystallizable thermoplastic become dimensionally stable at relatively low temperatures.
  • amorphous objects for example made of amorphous polyethylene terephthalate (PET) material, become dimensionally unstable at temperatures of about 70 ° C., so that it is recommended that such objects not have temperatures of Expose above 65 ° C. It is known that increasing the degree of crystallization increases the temperature stability
  • thermoforming an object from a layer of PET material It is known to thermoform an object from a layer of PET material and to crystallize the object during thermoforming, which increases the heat resistance.
  • US Pat. No. 3,496,143 describes a method for thermoforming a PET plate using a deep-drawing device
  • the PET plate has a thickness of 3 mm and an area of 370 mm x 280 mm
  • the US document requires that the PET sheet should have an initial degree of installation of 5% to 25%.
  • the process requires that the PET sheet be subjected to a lengthy heat treatment before being formed in the vacuum mold still in the mold, subjected to further heat treatment.
  • the plate is held in the mold until the degree of crystallization of the molded plate is greater than 25%.
  • the patent indicates that the molded article is at a temperature of 160 ° C and 60 minutes remains dimensionally stable
  • a disadvantage of the process of US Pat. No. 3,496,143 is that no precise and well-shaped objects can be produced, since the starting plate already has a degree of crystallization of 5% to 25% and can hardly be shaped.
  • the objects are not homogeneously crystallized and the amorphous regions which are still present only remain dimensionally stable up to approximately 70 ° C.
  • the proposed method with the proposed plate with a degree of crystallization of 5 to 25% is extremely uneconomical in terms of time.
  • EP-A-0 471 528 (Polysheet Ireland Limited) describes a method and apparatus for molding an article from a PET sheet so that the molded article is at temperatures above 70 ° C and preferably up to 200 ° C remains dimensionally stable.
  • this method can only produce objects whose light transmission fluctuates greatly, which is a sign that the object is incomplete and unevenly crystallized. Likewise, the dimensional stability under heat fluctuates in accordance with the fluctuating degree of crystallization.
  • the object of the present invention is therefore to provide a plate made of an amorphous, crystallizable thermoplastic, and an object formed therefrom with a uniform degree of crystallization, a homogeneous light transmission and a homogeneous heat resistance. Furthermore, the shaped object is to be distinguished by a homogeneous, glossy surface, a homogeneous cloudiness and by economical production.
  • a uniform degree of crystallization means that the degree of crystallization of the shaped object is greater than 20% and less than 60%, preferably greater than 30% and less than 50%, and that the degree of crystallization within a shaped object is not more than 10% fluctuates in crystallinity.
  • Uniform light transmission (measured according to ASTM D 1003) is understood to mean that the light transmission, depending on the wall thickness of the shaped object, is less than 50%, preferably less than 40% and particularly preferably less than 30%. The light transmission within the shaped object must not exceed 10 units fluctuate
  • the heat resistance of the molded article should be homogeneous in all areas at a high 100 ° C, preferably at a high 120 ° C and particularly preferably at a high 140 C
  • the heat resistance should not fluctuate more than 20 ° C within the molded article
  • a homogeneous, glossy surface is understood to mean that the surface gloss of the shaped object on the surface which does not come into contact with the deep-drawing mold, measured in accordance with DIN 67530 (measuring angle 20 °) at 70, preferably at 80 and particularly preferably at 90
  • the surface gloss should not fluctuate more than 20 gloss points on this surface
  • Homogeneous haze is understood to mean that the haze of the shaped article, measured according to ASTM D 1003, is more than 50%, preferably more than 60% and particularly preferably more than 70%. The haze should not fluctuate more than 10 cloud points within the shaped article
  • the planned item should have an excellent chemical resistance
  • a transparent, amorphous plate with a thickness in the range of 1 to 20 mm, which contains at least one crystallizable thermoplastic as the main component, and is characterized in that the plate is characterized by at least one homogeneously distributed nucleating agent for initiating crystallization during the thermoforming process and to increase the installation speed during the thermoforming process, so that after the thermoforming process, a crystallized article with the required property profile results.
  • the transparent, amorphous plate contains at least one crystallizable thermoplastic as the main component.
  • Suitable crystallizable or semi-crystalline thermoplastics are, for example, polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate, polybutylene naphthalate, cycloolefin homopolymers and cycloolefin copolymers and mixtures of these thermoplastics, polyethylene terephthalate being particularly preferred.
  • the transparent, amorphous plate also contains at least one nucleating agent, wherein the concentration of the nucleating agent can vary widely depending on the type of nucleating agent.
  • Polymers with a low to medium crystal growth rate like the thermoplastics mentioned respond very well to the so-called homogeneous, heterogeneous, athermal and / or spontaneous nucleation (nucleation) with the help of foreign substances - the nucleating agents.
  • thermoforming leads to the amorphous Thermoplastics with extremely heated molds and a lot of heat - to accelerate the crystallization - to partially crystalline finished parts with a strongly fluctuating degree of crystallization and strongly fluctuating properties such as light transmission, turbidity, surface gloss and heat resistance.
  • the finished parts are very difficult to remove from the mold and are sometimes too soft.
  • inert, insoluble additives, organic compounds with or without an inert additive and polymeric compounds with or without an inert additive as nucleating agents in these crystallizable thermoplastics can overcome these difficulties in deep-drawing.
  • the added nucleating agent is subject to the requirements that it must not lead to crystallization in the plate during plate production in the extrusion line with relatively rapid cooling. It is essential to the invention that the plate must be amorphous. In the case of plates which only have a low crystallization of more than 5%, thermoforming to a crystallized object proves to be inadequate and very time-consuming, since the crystalline components first have to be melted during deep-drawing, which requires a lot of time and energy.
  • the nucleating agent in the thermoforming process must increase the rate of crystallization and ensure that numerous small spherulites are quickly formed.
  • Suitable nucleating agents are, for example, inert, mineral fillers such as silicates with an average particle size of less than 5 ⁇ m and talc, clay, kaolin, mica with average particle sizes of less than 6 ⁇ m, metal oxides such as silicon dioxide, titanium dioxide and magnesium oxide, carbonates and sulfates, preferably of alkaline earth metals , Boron nitride and sodium fluoride with average particle diameters of less than 4 ⁇ m.
  • mineral fillers such as silicates with an average particle size of less than 5 ⁇ m and talc, clay, kaolin, mica with average particle sizes of less than 6 ⁇ m
  • metal oxides such as silicon dioxide, titanium dioxide and magnesium oxide
  • carbonates and sulfates preferably of alkaline earth metals
  • Boron nitride and sodium fluoride with average particle diameters of less than 4 ⁇ m.
  • Organic compounds are also suitable on their own or with insoluble, inert solids such as, for example, montan wax, montan ester salts, salts of mono- and polycarboxylic acids, epoxides and alkali metal aryl and alkylsulfonates, and also polymeric compounds alone or with insoluble, inert solids, such as polyethylene, polypropylene, polyamides Poly-4-methylpentene-1, polymethylbutene-1, copolymers of ethylene with unsaturated carboxylic acid residues, ionic copolymers of ethylene with salts of unsaturated carboxylic acids, copolymers of styrene derivatives with conjugated dienes, the crystallizable thermoplastic itself with an essential lower or a substantially higher intrinsic viscosity, oxidatively degraded polymers, regranulate from the crystallizable thermoplastic and mixtures of these nucleating agents.
  • insoluble, inert solids such as, for example, montan wax, montan ester
  • the transparent, amorphous plate according to the invention contains, as the main component, a crystallizable polyethylene terephthalate, 1 to 40% by weight.
  • a crystallizable polyethylene terephthalate 1 to 40% by weight.
  • the amorphous plate in addition to the crystallizable polyethylene terephthalate, the regrind from the crystallizable polyethylene terephthalate as nucleating agent, can also contain mixtures of the two inorganic nucleating agents, the total concentration of inorganic nucleating agent preferably between 0.01% by weight and 3.0% by weight. -% is based on the weight of the crystallizable polyethylene terephthalate.
  • the intrinsic viscosity of the regrind from the crystallizable thermoplastic is lower than the intrinsic viscosity of the crystallizable polyethylene terephthalate itself, which is contained as the main component in the amorphous plate.
  • Polyethylene terephthalate with a crystallite melting point T m measured with DSC (differential scanning calorimetry) with a heating rate of 10 ° C / min, from 240 ° C to 280 ° C, preferably from 250 ° C to 270 ° C, with a crystallization temperature range T c between 75 ° C and 280 ° C, a glass transition temperature T between 65 ° C and 90 ° C and with a density, measured according to DIN 53479, of 1, 30 to 1, 45 g / cm 3 and a crystallinity between 25% and 65% provide as starting materials for the production of Plate preferred polymers.
  • DSC differential scanning calorimetry
  • the standard viscosity SV (DCE) of the polyethylene terephthalate, measured in dichloroacetic acid according to DIN 53728, is between 600 and 1800, preferably between 700 and 1250 and particularly preferably between 800 and 1 200.
  • the intrinsic viscosity IV (DCE) is calculated from the standard viscosity SV (DCE):
  • the bulk density measured according to DIN 53466, is preferably between 0.75 kg / dm 3 and 1.0 kg / dm 3 , and particularly preferably between 0.80 kg / dm 3 and 0.90 kg / dm 3 .
  • the polydispersity M ⁇ M p of the polyethylene terephthalate measured by means of gel permeation chromatography is preferably between 1.5 and 4.0 and particularly preferably between 2.0 and 3.5.
  • crystallizable polyethylene terephthalate means: crystallizable polyethylene terephthalate homopolymers, crystallizable polyethylene terephthalate copolymers, crystallizable polyethylene terephthalate compounds, crystallizable polyethylene terephthalate recyclate and other variations of crystallizable polyethylene terephthalate.
  • amorphous plate is understood to mean plates which, although the crystallizable thermoplastic used preferably has a crystallinity of between 25 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% and particularly preferably 0%.
  • the plate according to the invention can be thermoformed on a conventional vacuum thermoforming machine with upper and lower heating to form a homogeneously crystallized object. It is essential that the molding tool is heated to temperatures of at least 100 ° C., preferably at least 120 ° C., for heating of the mold, in addition to heated oil, it is also possible, for example, to use electrically operated cassette heaters or the like.
  • the plate temperature should be below 140 ° C., preferably below 130 ° C. and particularly preferably below 120 ° C.
  • radiant heaters are suitable as a heat source for heating the plate to the preform temperature and for crystallizing the shaped object, but that infrared radiators with a wavelength of large 2000 nm provide a higher installation speed and an even higher and more homogeneous degree of crystallization, which also has a positive effect on the other physical properties such as light transmission, haze, surface gloss, heat resistance, chemical resistance and mechanical properties
  • the light transmission of the amorphous plate according to the invention is less than 10%, that is to say the absorption is extremely high in this wavelength range, which means that radiation with these wavelengths is converted into heat during deep drawing, as a result of which the crystallization is initiated and continued homogeneously with the participation of the nucleating agents
  • the deep-drawing process comprises the steps of heating with a heat source, vacuum forming under the action of heat, heat treatment, cooling and subsequent demolding
  • the amorphous PET plate according to the invention which contains the nucleating agents described contains is subjected to this deep-drawing process, whereby radiant heaters or other heating elements can serve as the heat source, but preferably infrared radiators with wavelengths of large 2000 nm are used
  • the already formed, still essentially amorphous and still substantially transparent layer is held in the mold under vacuum and, depending on the plate thickness, is preferably heat-treated for 30 seconds to 6 minutes at temperatures preferably in the range from 100 to 200 ° C., for which purpose preferably infrared radiators with wavelengths of larger 2000 nm are used
  • temperatures preferably in the range from 100 to 200 ° C., for which purpose preferably infrared radiators with wavelengths of larger 2000 nm are used
  • the transparent object turns milky white, ie the light transmission of the originally amorphous, transparent plate decreases homogeneously from about 90% due to the onset of crystallization and assumes values that are less than 50 %, preferably less than 40% and particularly preferably less than 30%, after the crystallization has taken place, the person skilled in the art being able to set the desired degree of crystallization via the light transmission which can be visually observed and / or measured by measurement technology, the shaped object is cooled and removed from the mold
  • the crystallized object thermoformed from the amorphous, transparent PET plate equipped with nucleating agents has a degree of crystallization from 20% to 60%, preferably from 30% to 50% and particularly preferably from 35% to 45% due to the nucleating agents used, which Initiate crystallization homogeneously and ensure that small, numerous spherulites are formed, the crystallization within the shaped object is extremely homogeneous and fluctuates less than 10 units in the degree of crystallization
  • the heat resistance of the molded article is homogeneous in all areas and greater than 100 ° C, preferably greater than 120 ° C, particularly preferably greater than 140 ° C and in particular greater than 160 ° C
  • the light transmission measured according to ASTM D 1003, by means of which the degree of crystallization can be set, is of course homogeneous and is below 50%, preferably below 40% and particularly preferably below 30%, since the light transmission depends on the degree of crystallization but also on the wall thickness of the molded Depends on the body, the light transmission is particularly less than 20% for wall thicknesses of large 3 mm
  • the shaped, crystallized object has a surface gloss on the surface that does not come into contact with the deep-drawing mold, measured in accordance with DIN 67530 (measuring angle 20 °) of greater than 70, preferably greater than 80, particularly preferably greater than 90 and in particular greater than 95
  • the haze of the shaped object measured in accordance with ASTM D 1003, is generally above 50%, preferably above 60% and particularly preferably above 70%. Since the haze, like the light transmission, depends not only on the degree of crystallization but also on the wall thickness of the shaped body, the haze is included Wall thicknesses of large 3 mm over 80%
  • the shaped and crystallized object according to the invention shows an even higher chemical resistance than the amorphous, transparent plate according to the invention
  • the tensile modulus measured in accordance with ISO 527-1, 2, is below 3600 MPa, preferably below 3400 MPa, which is further evidence that the crystallization is homogeneous and that numerous, small spherulites are due to the used Have formed nucleating agent, ie the object is not brittle despite crystallization
  • the nucleating agent can be metered in at the thermoplastic raw material manufacturer or metered into the extruder during plate production.
  • the addition of the nucleating agent via masterbatch technology is particularly preferred.
  • the nucleating agent is fully dispersed in a solid carrier material.
  • Certain resins, the polyethylene terephthalate itself or other polymers which are sufficiently compatible with the polyethylene terephthalate, are suitable as carrier material.
  • the grain size and the bulk density of the masterbatch is similar to the grain size and the bulk density of the polyethylene terephthalate, so that a homogeneous distribution and thus a homogeneous nucleation and crystallization can take place.
  • the crystallized object according to the invention is suitable for a large number of different applications, for example for trade fair construction and trade fair articles, for chemical and transport containers, for sanitary articles, and in shop and shelf construction.
  • the surface gloss is determined in accordance with DIN 67530.
  • the reflector value is measured as the optical parameter for the surface of a plate. Based on the standards ASTM-D 523-78 and ISO 2813, the angle of incidence was set at 20 °. A light beam hits the flat test surface at the set angle of incidence and is reflected or scattered by it. The light rays striking the photoelectronic receiver are displayed as proportional electrical values. The measured value is dimensionless and must be specified together with the angle of incidence
  • the light transmission is measured with the "Hazegard plus" measuring device in accordance with ASTM 1003
  • Haze is the percentage of the transmitted light that deviates by more than 2.5 ° on average from the incident light beam. The sharpness of the image is determined at an angle of less than 2.5 °
  • the heat resistance is called HDT B (Heat Deflection Temperature)
  • the Vicat softening temperature is measured at 50 N load according to ISO 306 Density:
  • the density is determined according to DIN 53479.
  • the standard viscosity SV (DCE) is measured based on DIN 53726 in dichloroacetic acid.
  • the intrinsic viscosity (IV) is calculated as follows from the standard viscosity (SV)
  • the thermal properties such as crystallite melting point T m , degree of crystallization, crystallization temperature range T c , post- (cold) crystallization temperature T CN and glass transition temperature T are measured by means of differential scanning calorimetry (DSC) at a heating rate of 10 ° C./min.
  • DSC differential scanning calorimetry
  • the molecular weights M w and M n and the resulting polydispersity MM n are measured by means of gel permeation chromatography (GPC).
  • the tensile modulus is measured at 23 ° C according to ISO 527-1, 2.
  • the polyethylene terephthalate from which the transparent plate is made has a standard viscosity SV (DCE) of 1010, which corresponds to an intrinsic viscosity IV (DCE) of 0.79 dl / g.
  • the moisture content is ⁇ 0.2% and the density (DIN 53479) is 1.41 g / cm 3 .
  • the crystallinity is 59%, the crystallite melting point according to DSC measurements being 258 ° C.
  • the crystallization temperature range T c is between 83 ° C and 258 ° C, the post-crystallization temperature (also cold crystallization temperature) T CN at 144 ° C
  • the polydispersity M ⁇ / M ,, of the polyethylene terephthalate polymer is 2.14
  • the masterbatch is composed of 2% by weight of silicon dioxide as nucleating agent with an average particle diameter of 1.0 ⁇ m and 98% by weight of polyethylene terephthalate, the main constituent of the plate
  • the regenerated polyethylene terephthalate as a nucleating agent has a standard viscosity SV (DCE) of 890, which corresponds to an internal viscosity IV (DCE) of 0.71 dl / g
  • the raw material mixture is then extruded in a single-screw extruder at an extrusion temperature of 280 ° C through a slot die on a smooth calender, the rolls of which are arranged in an S-shape, and smoothed to form a 4 mm thick plate.
  • the first calender roll has a temperature of 65 ° C and that subsequent rollers each have a temperature of 58 C C.
  • the speed of the take-off is 2.8 m / mm
  • the transparent, amorphous, 4 mm thick PET sheet is lined with cut-off saws on the edges, cut to length and stacked
  • the transparent, amorphous plate produced has the following property profile
  • the transparent, amorphous PET is thermoformed on a vacuum thermoforming machine from Geiss / Sesslach, using the following parameters, to form a chemical collecting container
  • Heating source upper and lower heating IR radiators with a wavelength of 2200 nm to 3200 nm
  • the molded chemical container has the following properties
  • the chemical container was loaded 150 times with a wide variety of chemicals for 24 hours and longer and proved to be absolutely stable.
  • the chemical container was left in an autoclave at a temperature of 162 ° C for 48 hours and was completely and homogeneously stable over the object
  • the molded body according to the invention is characterized by a high and uniform heat resistance, a defined and uniform light transmission, an extreme chemical resistance, by a homogeneous, glossy, corrosion-resistant surface and by an economical production

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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)
  • Mechanical Engineering (AREA)
  • Blow-Moulding Or Thermoforming Of Plastics Or The Like (AREA)
  • Compositions Of Macromolecular Compounds (AREA)

Abstract

L'invention concerne une plaque contenant comme constituant principal un thermoplastique cristallisable et au moins un agent nucléant, un corps moulé fabriqué à partir de cette plaque amorphe, son procédé de fabrication et son utilisation.
PCT/EP1997/004689 1996-09-09 1997-08-28 Plaque cristallisable transparente amorphe et corps moule fabrique a partir de celle-ci et presentant une thermostabilite elevee et homogene Ceased WO1998009799A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU46190/97A AU4619097A (en) 1996-09-09 1997-08-28 Amorphous, transparent, crystallisable plate and a moulded body produced therefrom with a high and uniform dimensional stability when exposed to heat

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1996136541 DE19636541A1 (de) 1996-09-09 1996-09-09 Amorphe, transparente, kristallisierbare Platte und ein daraus hergestellter Formkörper mit einer hohen und gleichmäßigen Wärmeformbeständigkeit
DE19636541.4 1996-09-09

Publications (1)

Publication Number Publication Date
WO1998009799A1 true WO1998009799A1 (fr) 1998-03-12

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PCT/EP1997/004689 Ceased WO1998009799A1 (fr) 1996-09-09 1997-08-28 Plaque cristallisable transparente amorphe et corps moule fabrique a partir de celle-ci et presentant une thermostabilite elevee et homogene

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AU (1) AU4619097A (fr)
DE (1) DE19636541A1 (fr)
WO (1) WO1998009799A1 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0505967D0 (en) * 2005-03-23 2005-04-27 Imerys Minerals Ltd Infrared absorbing polymer compositions and films
CN101376690B (zh) * 2007-08-30 2011-06-15 中国石化上海石油化工股份有限公司 一种制纤维用阻燃聚酯的制备方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496143A (en) * 1964-12-03 1970-02-17 Glanzstoff Ag Process for sheet forming polyethylene terephthalate
DE2420407A1 (de) * 1973-04-26 1974-11-14 Horizons Research Inc Formkoerper und verfahren zu deren herstellung
DE2748654A1 (de) * 1976-11-03 1978-05-11 Allied Chem Bogenmaterial, verfahren zu dessen herstellung und dessen verwendung
EP0471528A1 (fr) * 1990-08-12 1992-02-19 Polysheet (Ireland) Limited Procédé et dispositif pour mouler des objets en polyéthylène téréphtalate

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3496143A (en) * 1964-12-03 1970-02-17 Glanzstoff Ag Process for sheet forming polyethylene terephthalate
DE2420407A1 (de) * 1973-04-26 1974-11-14 Horizons Research Inc Formkoerper und verfahren zu deren herstellung
DE2748654A1 (de) * 1976-11-03 1978-05-11 Allied Chem Bogenmaterial, verfahren zu dessen herstellung und dessen verwendung
EP0471528A1 (fr) * 1990-08-12 1992-02-19 Polysheet (Ireland) Limited Procédé et dispositif pour mouler des objets en polyéthylène téréphtalate

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DE19636541A1 (de) 1998-03-12
AU4619097A (en) 1998-03-26

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