TW379241B - Polyethylene terephthalate sheet of improved stability to hydrolysis,a process for its production and its use - Google Patents

Abstract

The invention relates to an amorphous polyethylene terephthalate sheet having a thickness in the range from 0.8 to 20 mm, which comprises at least one antioxidant as a stabilizer to hydrolysis and oxidation.

Description

-C- Amendment Sheet for Chinese Specification of Patent Application No. 86110804, August 87, Republic of China, May 5th, Fa Yu said, "If) 1-Dimethylethyl) Dibenzo [d, f] [1, 3, 2] Dioxofosphpine mono 6-yl] oxy) ethyl] ethylamine (Cibaargis®irgafos: l 2) and / or tris (2,4 one tertiary, butylphenyl) Esters (CibaGeiger® Irgafos 1 6 8) and / or monomers and / or polymerized carbodiimides (Rheinctiemie 2® Stabaxsol P 1 〇), also known as hydrolysis stabilizers and oxidation stabilizers (for chemical structure And molecular weight, see Appendix). In addition to the antioxidant, the sheet of the present invention may optionally include other additives such as a colorant and a UV stabilizer. Suitable colorants are described, for example, in the aforementioned German applications Nos. 195 195 78.7 and 195 195 77.9. The UV stabilizer is preferably not to cause a color change or a slight change in the amorphous plate. The U V stabilizers include organic and organometallic compounds. Suitable UV stabilizers are, for example, 2-hydroxybenzophenone, 2-transylbenzotriazole, organic nickel compounds, salicylates, cinnamate, resorcinol monobenzoate, oxalate Aniline, hydroxybenzoate, sterically hindered amine and triazine, 2-hydroxybenzotriazole and triazine are preferred. Particularly suitable UV stabilizers for the present invention are 2- (4,6 ~ diphenyl-1,3,5-triazine-2-yl) -5 (hexyl) oxyphenol and 2,2 > — Methylene bis (6- (2H-benzotriazol-2-yl) -4- (1'1,3,3-tetramethylbutyl) phenol. UV stabilizer concentration is based on the PET weight of the sheet It is preferably from 0.001% by weight to 5% by weight. It has been unexpectedly found that the mixture of primary and secondary antioxidants and / or the secondary and paper strength standards are suitable for Sichuan China Weijiabiao (('NS) Λ4 specification ( 210X 297 mm) (Please read the notes on the back before filling in this page j, τ ί I. Printed by the Consumers' Cooperative of the China Standards Bureau of the Ministry of Economic Affairs -8- A7

The present invention relates to-an amorphous polyethylene terephthalate board > having a thickness in the range of 0 • 8 to 20 mm 0 The present invention is further related to.-A method of manufacturing the board and its use 0 This string has been described in several German patent string applications. Amorphous plates with a thickness of 1 to 20 mm? It can contain crystallizable thermoplastics, such as polyethylene terephthalate (PF) T) as the main component (German Patent A filed 1 9 5 1 9 5 7 9 · 5 1 9 5 1 9 5 7 8., 7 > 1 9 5 1 9 5 7 7 .9, 1 9 5 2 2 1 1 8., 4 5 1 9 5 2 2 1 2 0 .6, 1 9 5 2 2 1 1 9.. 2 y 1 9 5 2 8 3 3 6 • 8 1 9 5 2 8 3 3 4. 1 -and] C 15 2 J 3: 3 1 3: 3. 3) Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. Depending on the intended use, these plates can be transparent colored or contain colorants. Opaque, such as dyes and pigments. It may additionally contain one or more UV stabilizers. Crystallizable thermoplastics, such as polyethylene terephthalate, used to make these plates are preferred to have a standard viscosity in the range from 800 to 600. These plates may additionally have a scratch-resistant coating on at least one side. These coatings preferably contain silicon and / or acrylic resins (German Patent Application No. 1 6 2 5 5 3 4 _ 1). These plates are characterized by superior optical and mechanical properties. The method of making these plates is also described in these applications. Of course, the amorphous plates described in these applications using P E T as a crystallizable thermoplastic can be used in the invention explained below, so these applications are for reference of the present invention and are included as part of the present invention. This paper is again applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) -4- Λ— Α7 Β7 Printed by the Central Bureau of Standards of the Ministry of Industry and Technology—Consumer Cooperative Cooperatives 5. Description of Invention (6) / or main A blend of antioxidants and UV stabilizers produces a synergistic effect. The plate may also have a scratch-resistant coating on at least one side. Appropriate coating materials and methods are described in the aforementioned German Patent Application No. 1 9 6 2 5 5 34.1. According to the present invention, the antioxidants and other appropriate additives, such as UV stabilizers, colorants, etc., can be metered into the polyethylene terephthalate at the required concentration in advance by the raw material manufacturer, or can be used in the sheet Measured in the extruder during manufacturing. It is particularly advantageous to add antioxidants and their additives by means of the parent mixture technique. The reason is that the 'antioxidant and appropriate other additives are completely dispersed in the solid carrier material. Possible carriers are specific resins, auto-stabilized polyethylene terephthalate, or other polymers that are fully compatible with polyethylene terephthalate. The important point is that the particle size and bulk density of the matrix mixture should be similar to the particle size and bulk density of polyethylene terephthalate, and uniformly distributed to obtain uniform stability. According to the invention 'known crystallizable polyethylene terephthalate' means-crystallizable and amorphous polyethylene terephthalate homopolymer-a crystallizable and amorphous polymer pair Polyethylene terephthalate copolymers-Crystallizable and amorphous polyethylene terephthalate compounds-Crystallizable and amorphous polyethylene terephthalate recycled materials and-other types Of polyethylene terephthalate. Polyethylene terephthalate polymer by D sc (Differential Scanning — J -------- l y ------ Order ------ i I (Please read first Note on the back, please fill in this again.) The paper size is suitable for Sichuan Chinese storehouse standard Cen ((, NS) Λ4 size (210X297). -9-Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. V. Description of the invention Pan) EP — Α- 0 4 7 1 528 describes a method for forming an object from a polyethylene terephthalate (PET) board. The two sides of the pet board are in a thermoforming mold, Heat treatment in the temperature range between the glass transition temperature and the melting temperature. When the crystallinity of the shaped PE τ plate reaches within the range of 25 to 50%, the shaped pet plate is taken out from the mold. EP 一 Λ—〇4 7 1 The thickness of the PET plate disclosed in 528 is 1 to 10 mm. US-A-3 496 143 describes a vacuum thermoforming method for a 3 mm thick PET plate, the crystallization of which should be in the range of 5 to 25%. Thermoformed objects The degree of crystallinity is higher than 25%. Australian Patent Specification No. 3 0 0 86 describes a method for manufacturing transparent molded articles by thermoforming, which uses a degree of crystallinity lower than 5%. Ρ ET plate or film is used as the starting material. The plate or film used as the starting material is prepared from Ρ E T with a crystallization temperature of at least 160 ° C. Based on this relatively high crystallization temperature, it is found that P here ET is not a PET homopolymer, but a diol-modified PET, referred to as PET-G, which is a PET copolymer. Unlike pure PET T, the crystallization tendency of PET T-G is quite low, because In addition, the diol unit is incorporated, so it is usually in an amorphous state. None of these plates is stabilized by hydrolysis in any way. The object of the present invention is to provide an amorphous plate having a thickness of 0.8 to 20 mm, which particularly has Improved hydrolytic and oxidative stabilizers, in addition, have good mechanical properties and uniform optical properties. Improved hydrolytic and oxidative stability means that the board is applicable to national standards (CNS & gt) even up to the paper size ; A4 size (210X297mm) -5 · — ^ I binding (please read the precautions on the back before filling this page)

Printed by the Central Bureau of Standards of the Ministry of Standards and Printing Co., Ltd. A7 B7 V. Description of the invention (23) A clearness (image clarity): 9 9 · 0%-turbidity: 1.4%-2 per meter Surface defects: none (spots, orange peel, blistering, etc.) -Charpy impact strength an: no cracks-damage energy at 2 3 ° C WD: 1 4 0 J-cold forming properties: good-crystallinity: 0 % —Density · 1.3 g / cm 3 at 500 ° C and 9 5% relative atmospheric humidity, stored in a drying cabinet for 1000 hours, and using Atlas Ci65 Weather Ometer on each side After 1000 hours of weathering test, the PET board has the following properties:-surface gloss (measurement angle: 20 °) first surface: 17 1 second surface: 1 69-light transmittance: 89.1%-clearness (image Clarity): 97% turbidity: 2.6% total discoloration △ Ε: 0.2 2 dark discoloration AL: 0.18. Red-green discoloration ΔΑ:-〇.〇8 blue-yellow discoloration ΔΒ: 〇 .10. Surface defects: None (cracks, brittleness) (please read the precautions on the back before filling in this page), 1T This paper size is applicable to the Chinese storehouse standard (('NS) Λ4 specification (210 × 297 mm) -26-Printed bags A7 for consumer cooperatives of employees of the Central Standards Bureau of the Ministry of Economic Affairs! _____ B7 V. Description of the invention P) Store at a temperature of 50 ° C and a relative atmospheric humidity of up to 95%. The mechanical properties still do not cause substantial damage, especially the damage energy will not be greatly reduced, so the board is favorable for outdoor use and severe indoor applications. Good mechanical properties include, in particular, high impact strength and high rupture strength. Uniform optical properties include, for example, high surface gloss and no surface defects such as small protrusions, spots, and orange peel. If it is a transparent plate, the uniform optical properties also include high light transmittance, low turbidity, and image clarity (clearness). If it is an opaque color plate, it includes uniform and streak-free colors. The sheet of the invention should also be recyclable, especially without losing mechanical properties, and not flammable, so it can also be used, for example, for internal applications and display structures. The project is achieved by an amorphous plate with a thickness in the range of 0.8 to 20 mm, which contains a crystallizable polyethylene terephthalate based household component, wherein the plate contains at least one Oxygen, as a hydrolysis and oxidation stabilizer. The typical forms in which hydrolysis and oxidation occur are considered aging phenomena, depending essentially on the nature of the polymer and its use. On the one hand, it is aesthetics, such as yellowing, loss of gloss, loss of transparency, and surface cracks, and on the other hand, simultaneous loss of mechanical properties, such as brittle cracking, greatly reduced energy loss, and greatly reduced impact strength. The tablet properties are impaired and lose their use. There are basically several possibilities that can delay the effects of oxidation and hydrolysis:-Modify the structure of the thermoplastic-Protect the terminal groups-Add antioxidants. I ------- 7 丨 Packing ------ Order ----- 1 line (Please read the precautions on the back before filling this page) This paper size applies to Chinese national standards (CNS > A4 Specifications (2 丨 0 X 297 mm) -6-Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 —_____ B7 V. Description of the Invention 0) Antioxidants are chemical compounds that can delay oxidation and hydrolysis and form aging. The antioxidants suitable for the polyethylene terephthalate board of the present invention can be classified as follows: Type of additive group Substances Main antioxidants Stereo hindered phenols and / or secondary aromatic amines Secondary antioxidants Phosphites And phosphinates, thioether carbodiimides, and dibutyl dithiocarbamate zinc. In a preferred embodiment, the amorphous polyethylene terephthalate plate of the present invention contains an antioxidant. Phosphites and / or phosphonates and / or carbodiimides. Examples of the antioxidant used in the present invention are 2-[(2,4,8,10-tetra (1,1-dimethylethyl) dibenzo [d, f] [1 '3,2] di Phosphepin-6-yl] oxy) ethyl] ethylamine and tris (2,4-tributylphenyl) trisphosphite. The general concentration of the antioxidant is from 0.01 to 6% by weight based on the weight of the board. In a particularly preferred embodiment, the board of the present invention contains amorphous and / or crystallizable polyethylene terephthalate as a main component, and 0.0 1 to 6 wt% as an antioxidant 2-[(2 , 4, 8, 10-four (1, this paper size applies Chinese National Standard (CNS) A4 specification (210 X297 mm) ΓΤΙ — I ------- f A ------, !! ------ it (Please read the precautions on the back before filling out this page) -C- No. 86110804 Patent Application Chinese Specification Revision Page Republished in August, 1987, 5th, Fa Yu speaks If) 1 1 2 (Methylethyl) dibenzo [d, f] [1,3,2] dioxafospipine-6-yl] oxy) ethyl] ethylamine (Cibajiagi®irgafos: l 2) and / or tris (2,4-tert-butylphenyl) phosphite (Irgafos 1 6 8) and / or monomer and / or polymerized carbodiimide (Rheinctiemie2® Stabaxsol P 1 〇), also known as hydrolysis stabilizers and oxidation stabilizers (in terms of chemical structure and molecular weight, see Appendix). In addition to the antioxidant, the sheet of the present invention may optionally include other additives such as a colorant and a UV stabilizer. Suitable colorants are described, for example, in the aforementioned German applications Nos. 195 195 78.7 and 195 195 77.9. The UV stabilizer is preferably not to cause a color change or a slight change in the amorphous plate. The U V stabilizers include organic and organometallic compounds. Suitable UV stabilizers are, for example, 2-hydroxybenzophenone, 2-transylbenzotriazole, organic nickel compounds, salicylates, cinnamate, resorcinol monobenzoate, oxalate Aniline, hydroxybenzoate, sterically hindered amine and triazine, 2-hydroxybenzotriazole and triazine are preferred. Particularly suitable UV stabilizers for the present invention are 2- (4,6 ~ diphenyl-1,3,5-triazine-2-yl) -5 (hexyl) oxyphenol and 2,2 > — Methylene bis (6- (2H-benzotriazol-2-yl) -4- (1'1,3,3-tetramethylbutyl) phenol. UV stabilizer concentration is based on the PET weight of the sheet It is preferably from 0.001% by weight to 5% by weight. It has been unexpectedly found that the mixture of primary and secondary antioxidants and / or the secondary and paper strength standards are suitable for Sichuan China Weijiabiao (('NS) Λ4 specification ( 210X 297 mm) (Please read the notes on the back before filling in this page j, τ ί I. Printed by the Consumers' Cooperatives of the Zhongjia Standard Bureau of the Ministry of Economic Affairs -8- Λ— Α7 Β7 Printing by Consumer Cooperatives 5. Description of the Invention (6) / or the mixture of the main antioxidant and UV stabilizer produces synergistic effects. The board can also have a scratch-resistant coating on at least one side. Appropriate coating materials and methods It is described in the aforementioned German patent application No. 19 6 2 5 5 34.1. According to the present invention, 'antioxidants and other suitable additives, such as UV stabilizers, Toners, etc. can be metered in polyethylene terephthalate at the required concentration in advance by the raw material manufacturer, or they can be metered in the extruder during the manufacture of the sheet. Add antioxidants and Its additives are particularly advantageous. Therefore, the antioxidants and other appropriate additives are completely dispersed in the solid carrier material. Possible carriers include specific resins, auto-stabilized polyethylene terephthalate or other polymers The polymer of ethylene terephthalate with sufficient phase. The main point is that the particle size and bulk density of the parent mixture are similar to the particle size and bulk density of polyethylene terephthalate. Stabilization. According to the invention 'known crystallizable polyethylene terephthalate' means-crystallizable and amorphous polyethylene terephthalate homopolymer-crystallizable and amorphous Polyethylene terephthalate copolymer-crystalline and amorphous polyethylene terephthalate compounds-crystalline and amorphous polyethylene terephthalate recycled materials and —Other types of polyparaxylylene Ethylene glycol vinegar. Polyethylene terephthalate polymer, by D sc (differential scanning — J -------- l y ------ order ------ i I (Please read the notes on the back before filling in this card) This paper size is suitable for Sichuan Chinese storehouse standard ((, NS) Λ4 size (210X297)) -9-Printed by the Consumers' Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs A7 _____B7 V. Description of the invention (7) Quantitative method) The crystalline melting point T m measured at a heating rate of 10 ° C / min is 2 2 0t to 2 6 0 t, and 2 3 0 t: to 2 5 0 ° C is preferred, and the crystallization temperature range is T. Between 7 5 ° C and 2 60 ° C, glass transition temperature between 65 ° C and 90 ° C, and density according to DIN53479 is 1.30 to 1.4 5 g / cm3, crystallinity is between Between 5% and 65%, the cold crystallization (post) temperature is 120 to 15 8 ° C 'preferably 130 to 15 8t, which is the best starting material for making the plate polymer. The standard viscosity SV (DCA) of polyethylene terephthalate in dichloroacetic acid according to DIN 53728 is between 800 and 6000, preferably between 95 ° and 5000 'and between 1 000 And between 4000 and 4000. The intrinsic viscosity IV (DCA) is calculated from the standard viscosity SV (DCA) as follows: IV (DCA) = 6.67X10-4SV (DCA) +0.118 The bulk density measured according to D IN53466 is between 0.75 k g / dm3 and 1. It is better to be between 0 kg / dm3 and between 0.88 kg / dm3 and 0.90 kg / dm3. The degree of polymerization of polyethylene terephthalate measured by GPC is preferably between 1.5 and 4.0, and between 2.0 and 3.5. It is known that the amorphous plate in the present invention means an amorphous plate ' but in a preferred embodiment, the crystallizable thermoplastic used has a crystallinity between 5 and 65%. "Non-crystalline, that is substantially amorphous" means that the crystallinity is in accordance with the Chinese National Standard (CNS) A4 specification (210 x 297 mm) -10-I ------- ^ 1 pack --- --- Order ------ 1 Ice (please read the precautions on the back before filling this page) Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 ____B7 V. Invention Description (8) Often less than 5% It is better to be less than 2%, and 0% is particularly good. In these plates, the polymer is basically in an unoriented state. Amorphous containing at least one antioxidant as a hydrolysis stabilizer and an oxidation stabilizer. Polyethylene terephthalate board can be single-layer and multi-layer. In the multi-layer specific example, the plate is made from at least one cladding and at least one core layer. For this specific example, the core layer Polyethylene terephthalate has a higher standard viscosity than the polyethylene terephthalate coating adjacent to the core layer. The plate is described in, for example, a German application filed by the applicant at the same time, The heading is " Multilayer plate of crystallizable thermoplastic, its manufacturing method and use # > Multilayer color plate of crystallizable thermoplastic #. 本 发Refer to these cases. In the case of multiple layers, it is better to include an antioxidant in the coating. However, the core layer can also be treated with an antioxidant if necessary. In contrast to the single layer, the antioxidant The concentration of the treated layer with respect to the weight of the PET is usually from 0.1 to 6% by weight. In the present invention, the production of a stable amorphous plate for hydrolysis and oxidation is possible. For example, in the extrusion line, it is performed by the extrusion method. If it is a multi-layer specific example, it is performed by the co-extrusion method. Both methods are described in detail in the aforementioned German patent application and have been used as a reference for the present invention. The polyethylene terephthalate can be dried for 4 to 6 hours at 160 ° C to 180 ° C before extrusion. Polyethylene terephthalate and antioxidant and appropriate The other additives are melted together in the extruder. The melt temperature of PET is preferably in the range of 250 ° C to 320 ° C. The melt temperature can be basically determined by the extruder temperature and ------ --f ί pack ------ order ------ ί ice (please read the precautions on the back before filling in this page) Applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) -11-Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 __ 5. Description of the invention (9) The residence time of the melt in the extruder is established. The shaped melt exits the extruder / coextrusion machine 'such as a slit die hole through a die hole, and is then graded, polished, and cooled in a polishing channel with at least two rollers. To obtain an amorphous with good optical quality The temperature of the plate's first roller must be in the range from 50 to 80 ° C. The plate can be adjusted to the required size. However, the polyethylene terephthalate plate without antioxidant treatment After storage at 50 ° C and 9 5% relative atmospheric humidity in a drying cabinet for 20 days, the damage energy is greatly reduced, and there are brittle cracks. The board containing the antioxidant in the formula shows a substantially higher damage energy. During the determination of impact strength by the Charpy method, there were unexpectedly no brittle cracks and no or only slight thermal degradation. According to the weather resistance test, it was concluded that the formula of the present invention contains a synergistic mixture of an antioxidant and a UV stabilizer. Polyethylene terephthalate The yellow value (a measure of yellowing) significantly reduced without visually found no loss of gloss, surface defects No visual damage and high energy, while having the desirable mechanical properties, even after used outdoors 0 8-1 years versa. It was also completely unexpected to find superior and economical thermoformability (thermoforming and vacuum forming. In contrast to polycarbonate sheets, the sheet of the present invention does not need to be dried before thermoforming. On the other hand, polycarbonate sheets Depending on the thickness of the plate, it needs to be dried in advance at, for example, about 25 ° C for 3 to 50 hours. Another feature of the plate of the present invention is that the thermoforming cycle time is extremely short, and the temperature during the thermoforming process is low. According to this Nature, can be used in conventional thermoforming machines to produce molded products from the sheet of the present invention economically and with high productivity. This paper size applies to Chinese national standards (CNS > A4 size (210X297 mm) 1 \ 2-'. ^ I ^, TTf (Please read the precautions on the back before filling this page) Printed by the Consumers Cooperative of the Central Government Bureau of the Ministry of Economic Affairs A 7 ____B7 V. Description of the invention (1) Measurements also show that the plate of the present invention is not flammable. Non-combustible rain eaves with very little smoke, so it is also very suitable for outdoor use and display structure "The sheet of the present invention can be recycled without problems, does not pollute the environment and does not lose mechanical properties, meaning that it is suitable for Advertising sign or other According to the superior properties of this unexpected large number, the amorphous polyethylene terephthalate board of the present invention can be advantageously applied to several completely different uses: for example, outdoor applications such as, for example, greenhouses, roofs, outdoor panels, etc. Panels, cladding, used in architectural parts, lighting advertisements, terrace panels and skylights, and indoor applications such as, for example, indoor panels, display structures and exhibits, as displays for lighting parts, shop decoration and sheds The signs used in the structure are as advertising supplies, as a single billboard, as a basketball backboard, as a partition board, as a glass trough, as an information board and as a booklet and report board. The invention is explained in more detail with the help of specific examples, It is not a limitation. The individual properties are determined according to the following standards and methods. A measurement method: Surface gloss: The surface gloss is determined according to DIN 6 7 5 3 0 at 20. It is measured at a measurement angle. The reflector is measured in the form of optical parameters for the surface of the board. .According to the standard ASTM — D523 — 78 and ISO 2813, the incident angle is set to 20 °. At this incident angle setting, the light hits the flat The surface is reflected or scattered. The light incident on the optoelectronic receiver is expressed as a proportional current 。. The measurement 値 has no dimension and needs to be stated together with the angle of incidence. This paper size applies the Chinese National Standard (CNS) A4 specification 210X297 公 楚) _ 彳 3-: --------- ^ ------ 1T ------ ft (Please read the precautions on the back before filling this page) Central Standard of the Ministry of Economy Bureau Consumer Consumption Cooperative Printing Co., Ltd. A7 B7 __V. Description of the Invention (11) Transmittance: It is known that the transmittance is the ratio of the total light transmitted to the amount of incident light. The transmittance is based on ASTM D1 003 using Mazegard plus Measurement on the measuring device. Haze and clarity: Haze is the percentage of light that penetrates and deviates from the incident beam by an average of 2.5 ° or more. Image sharpness is measured at an angle of less than 2.5 °. Turbidity and clarity were measured according to ASTM D1003 using H a z e g a r d plus a measuring device. Surface defects: Surface defects are determined by visual inspection. Charpy impact strength a n: This is determined in accordance with ISO 179 / 1D. Damage energy W D: The damage energy W D (also known as the work of damage) is measured in a burst test (also called a drop test) according to ISO 6603-2. The damage energy is the work done by the sample to reach the recognized damage point. Density: Density is measured according to D I N 5 3 4 7 9. Bu ------- ^ I installed ------ order ----- ~ 1 ball (please read the precautions on the back before filling this page) This paper size applies to Chinese national standards (CNS> A4 Specifications (210X297mm) -14-Printed by A7 B7, Shellfish Consumer Cooperative, Central Bureau of Standards, Ministry of Economic Affairs 5. Description of the Invention (12) SV (DCA), IV (DCA): Standard viscosity SV (DCA) is based on dichloroacetic acid Measured according to DIN 5 3 7 2 8. The intrinsic viscosity (IV) is calculated from the standard viscosity (SV) as follows: IV (DCA) = 6.67xl0-4SV (DCA) + Ο. 1 1 8 Thermal properties: Thermal properties such as The crystalline melting point Tm, the crystallization temperature range T., and the (cold and transparent crystallization temperature T ..) and the glass transition temperature Ts are determined by differential scanning calorimetry (DSC) at a heating rate of 10 ° c / min. Polymerization degree dispersibility: The molecular weights Mw and Mn and the formed polymerization degree dispersibility are determined by gel permeation chromatography (GPC). Weather resistance (double-sided), UV stability: The UV stabilizer test according to the test description I SO 4892 is as follows Device: Atlas Ci 65 Weather Ometer Test conditions: IS Ο 4 8 9 2, i.e. simulated weather resistance Exposure time: 1 0 0 0 hours (each ) Irradiation: 0.5 W / m 2,240 nm Temperature: 6 3 ° C The paper size is applicable to China National Standard (CNS) A4 (210X297 cm) _ 15-I .------- f I ------ Order ------ f ball (Please read the notes on the back before filling this page) Central Standard of the Ministry of Economic Affairs 扃 Printed by the Consumer Consumer Cooperative A7 __B7 V. Description of the invention (13) Relative atmospheric humidity : 50% xenon lamp: borosilicate inner and outer filter irradiation cycle: UV light for 10 minutes, then spray water on the sample and irradiate UV light for 18 minutes, and then UV light for another 102 minutes. Color change : The color change of the sample after simulated weathering is measured using a spectrophotometer according to DI N5 0 3 3. The symbols have the following definitions: △ L: Photometric difference + Z \ L: The sample is brighter than the standard. AL: The sample is more standard. Darkness △ A: Red-green zone difference + ΔΑ: Sample is more standard than red ΛΑ: Sample is greener than standard △ B: Blue-yellow zone difference + ΛB: Sample is higher than standard yellow-ΔB: Sample is more standard Object blue △ E: Total color change ΔΕ = (Δί2 + ΔΑ2 + ΔΒ2) 1/2 The larger the deviation from the number of standard objects, the larger the color deviation. It is possible when the number is S 0.3. Ignore, which means that the color change is not obvious. Yellow 値: This paper size applies the Chinese National Standard (CNS) Α4 size (210X297 mm). 16-I ------- f 1 pack ------ order ----- 1 竦 {Please read the precautions on the back before filling this page) A7 _____B7 V. Description of the invention (14) Yellow 値 Y is the deviation from the colorless in the yellow indication. It is measured according to D 6 1 6 7. The yellow 値 Y $ 5 cannot be visually inspected.

N Example 1: Manufacture the material layer sequence by the described coextrusion method A—B—A 4-mm thick multilayer transparent amorphous polyethylene terephthalate, B represents the core layer and A represents the overlay Floor. The core layer B is 3.5 mm thick, and the two overlays covering the core layer are each 250 microns thick. Polyethylene terephthalate for base layer B has the following properties: SV (DCA) IV (DCA) Density Crystallinity Crystal melting point T m Crystallization temperature range TC After (cold) crystallization temperature range T cc Polymerization degree dispersibility M w / Μη Glass transition temperature

: 110 0 0. 8 5 d 1 / g: 1. 3 8 g / cm: 4 4%: 2 4 5 ° C: 8 2 0 to 2 4 5 t:: 1 5 2 t:: 2.02: 8 2 ° C -------- ^ --install ------ order ------ f ice (please read the precautions on the back before filling this page) The covering layer A contains polyethylene terephthalate as a main component, each containing 1.0% by weight of an antioxidant 2 — [(2, 4, 8, 10 — tetra (l'l — dimethylethyl) Group) dibenzo [d, f] [1,3,2] dioxafosphpine-6-yl] oxy) ethyl] ethylamine (Cibajiagi® Irgafos 1 2). In order to determine the uniform distribution, the raw material manufacturers directly apply the 1.0% by weight resistance to this paper size to the Chinese National Standard (CNS) A4 specification (210X297 mm) -17-printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs A7 _____B7 V. Invention Explanation (15) The oxygen agent Irgafos 1 2 is blended with polyethylene terephthalate. The standard viscosity SV (DCA) of the polyethylene terephthalate used to make the coating is 10 0, which corresponds to the intrinsic viscosity IV (DCA) of 0.79 d Ι / g. The water content is <0.2% and the density (DIN53479) is 1.41 g / cm3. The degree of crystallinity is 59% 'and the melting point of the crystals as measured by DSC is 2 59 ° C. Crystallization temperature range T. Between 8 3 ° C and 2 5 8 ° C, and then the crystallization temperature is also called cold crystallization temperature) T. . ) Is 1 4 4 ° C. The polymerization degree dispersion M * / Mn of polyethylene terephthalate was 2.14. The glass transition temperature is 8 3 ° C. Prior to co-extrusion, the polyethylene terephthalate for the core layer and the hydrolyzed stabilized polyethylene terephthalate for the coating are dried in a desiccator at 170 ° C. After 5 hours, it was co-extruded through a slot die on a polishing calender. The rollers of the machine were arranged in an S-shape and polished into a three-layer board with a thickness of 4 mm. The extrusion temperature of the main extruder for the core layer is 2 8 2 ° C. The extruding temperature of the two co-extrusion machines for the coating was 294 ° C. The first calender rollers had a temperature of 6 and the subsequent rollers each had a temperature of 5 8 ° C. The take-off speed was 4.2 m / min. After post-cooling, the edges of the three-layer transparent board were trimmed with a separating saw, cut into sections and stacked. The obtained transparent amorphous three-layer P E T has the following properties: One-layer structure: A-B-A-Total thickness: 4 mm I. ^ _ installed n Order? 〈〈Please read the notes on the back before filling this page) This paper size applies to China National Standard (CNS) A4 (2 丨 0X297 mm) · 18-Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 Description of the invention (16) The thickness of the core layer: 3.5 mm, the thickness of the coating: 0.2 5 mm each, the first surface gloss: 191 (measurement angle 20 °), the second surface: 1 8 9 —transmittance: 9 3.0% —Clearness: 100% —Haze: 0.7% —Surface defects per meter2: None (spots, orange peel, blistering, etc.) —Charpy impact strength an: No cracks—Crystallinity: 0 %-Density: 1.3 3g / cm3-Damage energy at 2 3 ° C WD: 1 3 9 J PET sheet stored in a drying cabinet at 50 t temperature and 95% relative humidity for 1000 hours, PET board The following properties are shown: First surface gloss (measurement angle 20 °): 173 Second surface: 1 6 9-Transmittance: 9 1. 8-Clearness: 1 0 0%-Turbidity: 1.0 One surface defect per square meter: none. Crystallinity: 0%. Density: 1.3 3g / cm3. Charpy impact strength: no cracks (please read the precautions on the back before filling in) (This page) This paper size is in accordance with Chinese National Standard (CNS) A4 (210X297 mm) -19 printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs A7 B7 V. Invention Description (17) — Damage energy at 23 ° C : 118J Example 2: A 4 mm-thick transparent PET plate was produced in the same manner as in Example 1. The core layer contains 0.1% by weight of an antioxidant Irgafas 12 as an anti-hydrolytic stabilizer, which has been metered in by the raw material manufacturer. The coatings each contained 1.0% by weight of the antioxidant Irgafos 1 2 and 11% by weight of the stabilizer 2 — (4,6-diphenyl-1,3,5 —triamidine 2 —based) —5 — ( Hexyl) oxyphenol (CibaGeiger® Tinuvin 1577). The raw material manufacturers put two stable doses directly into polyethylene terephthalate. The formed transparent PET board has the following properties:-total thickness: 4 mm-surface gloss first side (measurement angle 20 °): 176 second side: 1 7 2-light transmittance: 9 2.7%-clearness: 9 9.8%-Turbidity: 1.8%-Surface defects (spots, orange peel, blistering, etc.) per meter2: None-Charpy impact strength an: No cracks-Damage energy at 23 ° C WD: 1 32 J — Crystallinity: 0% I n ^ Install 111.?111 j thread (please read the precautions on the back before filling this page) This paper size applies to China National Standard (CNS) A4 specification (210X297) (Centi) -20-printed by Zhengong Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 ___ B7 V. Description of the invention (18)-Density: 1.33g / cm3 at 50 ° C and 9 5% relative atmospheric humidity, dry After 1000 hours of storage in the cabinet, and 1,000 hours of weathering on each side using the Atlas Ci65 Weather Ometer, the PET board has the following properties: —Surface first surface: 1 5 4 (measurement angle 2 0 ° ) Second side: 1 5 2-Transmittance: 9 1.2% _Clearness: 9 9.4% —Turbidity · 2, 8%-Total discoloration ΛΕ: 0.2 4 -D ari discoloration AL:-0.1 9 one red one green discoloration ΔΑ:-0.0 8-blue one yellow discoloration ΔB: 0.1 2-surface defects (cracks, embrittlement): no one yellow 値 Y: 4 one Charpy impact resistance Strength an: no cracks-damage energy at 2 3 ° C WD: 1 2 1 J-crystallinity: 0%-density: 1.33g / cm3 Example 3: manufacturing a 4 mm thick single-layer transparent plate, which contains as The main ingredients are polyethylene terephthalate and 0.5% by weight antioxidant® Irgafosl2 (Ciba Geiger). This paper size is applicable to China National Standard (CNS) M specification (2 丨 0X297 public celebration) -21----------- installation ------ order ------ ft (read first Read the notes on the back and fill in this page) A7 B7 Printed by the Central Bureau of Standards of the Ministry of Economic Affairs and Consumer Cooperatives i. Description of Invention (19) In order to determine the uniform sentence distribution, raw material manufacturers directly incorporate 0.5% by weight of antioxidants into the polymer. In ethylene terephthalate. The standard viscosity SV (DCA) of the polyethylene terephthalate used was 1 0 1 0 ′, which corresponds to an intrinsic viscosity I V (D C A) of 0 to 7 d l / g. The water content is <0.2% and the density (DIN 5 3 4 7 9) is 1.4 1 g / cm3. The degree of crystallinity was 59%, and the melting point of the crystals was 2 5 8 t as measured by DS C. The crystallization temperature range T c is between 8 3 t and 258 ° C, and the post-crystallization temperature (also called cold crystallization temperature) T. Is 1 4 4 ° C. Polyethylene terephthalate has a polymerization degree dispersibility of 2.14. The glass transition temperature is 8 3 1. Before extrusion 'Polyethylene terephthalate was dried in a desiccator for 5 hours at 1708' and subsequently extruded through a slit die in a single-screw extruder at an extrusion temperature of 28.6 t Mouth, reaching the polishing calender, its rollers are arranged in an S-shape and polished into a 4 mm thick plate. The temperature of the first calender roller was 65 ° C. The subsequent droppers each had a temperature of 58 ° C. After cooling, the edges of the 4 mm-thick transparent P E T plate were cut and trimmed, cut into sections and stacked. The obtained transparent amorphous PET board has the following properties:-Thickness: 4 mm-surface gloss (measurement angle 20). First side: 198 Second side: 1 9 6 ~ Transmittance: 9 2% ---- ---- r i ------ ίτ ------ ^ A (Please read the notes on the back before filling this page) This paper size is applicable to China National Standard (CNS) A4 (210X297)嫠) Central Standard of the Ministry of Economic Affairs 扃 Printed by employees' consumer cooperatives A7 B7 V. Invention description Hurry) 1 degree of clarity (image clarity): 100% 1 turbidity: 0.5% 1 surface defect per square meter : None (spots, orange peel, blistering, etc.)-Charpy impact resistance an: no cracks-cold forming properties: good, no defects-damage energy at 2 3 ° C WD: 1 36 J — crystallinity: 0 % —Density: 1.33g / cm3 at 50 ° C and 95% relative atmospheric humidity, after storage for 1000 hours in a drying cabinet, the single-layer PET board has the following properties: a surface gloss (measurement angle 2 0 °) The first side: 1 8 2 The second side: 1 8 0 —Transmittance: 90.5% (Clarity of image): 9 9% —Turbidity: 0.9% per meter 2 surface defects: Charpy impact strength an: no cracks-cold forming properties: good, no defects-damage energy at 2 3 t WD: 1 2 8 J-crystallinity: 0%-density: 1.33g / cm3 Example 4 : --------- f -¾ 衣 ------ ΪΤ ------ \ \ (Please read the precautions on the back before filling out this page) This paper size applies to Chinese national standards ( CNS) A4 size (210X297 mm) _ 23-Printed by A7 B7, Consumer Cooperative of the Central Bureau of Standards, Ministry of Economic Affairs i. Description of the invention θ) 4 mm thick transparent PET sheet was produced as in Example 3, in the form of a master mix Measure Antioxidant® Irgafos 1 2 into the mixture. The master mix contains the active compound ingredients of Irgafos 12 and 95% by weight of polyethylene terephthalate from Example 3. Before extrusion, 90% by weight of the polyethylene terephthalate from Example 3 and 1% by weight of the precursor mixture were dried at 170 ° C for 5 hours. Extrusion and sheet manufacturing were performed as in Example 3. The obtained transparent amorphous PET board has the following properties:-thickness: 4 mm "surface gloss (measurement angle 20 °) first side: 192 second side: 191-light transmittance: 9 1.30%-clearness: 1 0 0% One turbidity: 0.6% 'Surface defects per meter2: None (spots, orange peel, blistering, etc.)-Charpy impact strength an: no cracks ~ damage energy at 23 ° C W. : 1 33 J 'Cold forming properties: good ~ crystallinity: 0% ~ density: 1.33g / cm3 at 5 temperature and 9 5% relative atmospheric humidity' after storage in a dry cabinet for 100 hours, this single layer PET board has the following properties: — surface gloss (measurement angle 20 °) first side: I? 9 ---------- ^ I installed-(Please read the precautions on the back before filling in this page) This paper size is applicable to China National Standard for Ladder (CNS) A4 (210X 297 mm) -24-V. Description of the invention A7 B7 7 8 —Transmittance: 90.2% Yicheng (image clarity): 9 9.2% Turbidity: 1.0%-Surface defects per meter2: None—Charpy impact strength an: No cracks—Cold forming properties: Good—Damage energy at 2 3 ° C WD: 1 2 8 J-Crystallinity: 0%-Density: 1.33g / cm3 Example 5: A 4 mm thick transparent Pe layer PET board was produced as in Example 3 containing 0.5% by weight of antioxidant Irgafos 1) and 1 . 5% by weight UV stability (1 6 6 6) Consumers' Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs of the People's Republic of China's 3,5 —triazine_2 —based] 5 — (based) Gas-based Gigiel® Tinuvin 1 5 7 7 ). Tinuvin 1 577 has a melting point of 149 ° C and is extremely stable when heated to ° C. The stabilizer is measured by the raw material manufacturer. The obtained transparent amorphous PET board has the following properties:-thickness: 4 mm-surface gloss (measurement angle 20 °) first side: I83 second side: 1 8 0 T plate 2 (diphenol (_ about 0- ------- Installation ------ Order ----- t Ball (Read the notes on the back of the poem before filling this page) Transmittance: 9 0.1% This paper size is applicable to China Standard (CNS) A4 specification (210X297 mm) -25-

Printed by the Central Bureau of Standards of the Ministry of Standards and Printing Co., Ltd. A7 B7 V. Description of the invention (23) A clearness (image clarity): 9 9 · 0%-turbidity: 1.4%-2 per meter Surface defects: none (spots, orange peel, blistering, etc.) -Charpy impact strength an: no cracks-damage energy at 2 3 ° C WD: 1 4 0 J-cold forming properties: good-crystallinity: 0 % —Density · 1.3 g / cm 3 at 500 ° C and 9 5% relative atmospheric humidity, stored in a drying cabinet for 1000 hours, and using Atlas Ci65 Weather Ometer on each side After 1000 hours of weathering test, the PET board has the following properties:-surface gloss (measurement angle: 20 °) first surface: 17 1 second surface: 1 69-light transmittance: 89.1%-clearness (image Clarity): 97% turbidity: 2.6% total discoloration △ Ε: 0.2 2 dark discoloration AL: 0.18. Red-green discoloration ΔΑ:-〇.〇8 blue-yellow discoloration ΔΒ: 〇 .10. Surface defects: None (cracks, brittleness) (please read the precautions on the back before filling in this page), 1T This paper size is applicable to the Chinese storehouse standard (('NS) Λ4 specification (210 × 297 mm) -26-Printed on A7 by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs ___ ^ _ 5. Description of the invention such as) ~ Charpy impact resistance an: no cracks, cold forming properties: good ~ 2 3 t: Lower damage energy WD: 1 1 9 J ~ Crystallinity: 0% ~ Density: 1.3 3 g / cm3 Example 6 A 4 mm thick white amorphous PET plate was produced in the same manner as in Example 5. The board contains 6% by weight titanium dioxide colorant, and two stabilizers® T i n u v i η 15 7 7 and I r g a f 0 s 12. The titanium dioxide is of the rutile type and is coated with an inorganic coating of A 1 2 03 and an organic coating of polydimethylsiloxane. The average particle diameter of titanium dioxide was 0.2 micron. Titanium dioxide is added as a matrix mixture. The precursor mixture contains 30% by weight of the foregoing titanium dioxide as an active compound ingredient, and 70% by weight of the foregoing polyethylene terephthalate as a carrier material. Before extrusion, 80% by weight of polyethylene terephthalate was treated with 1.5% by weight of Tinuvin 1 5 7 7 and 0.5% by weight of Irgafosl2 and 20% by weight of the titanium dioxide precursor mixture was dried at 17 Dry for 5 hours. Extrusion and sheet manufacturing were performed as in Example 3. The obtained white has the following properties:-thickness: 4 mm-surface gloss (measurement angle 20). First side: 128 Second side: 1 2 7 This paper size applies to China National Standard (CNS) A4 (210X297 mm) -27-1 ^ ------- f — equipment ------ order ----- a spicy (please read the precautions on the back before filling out this page) Staff Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Printed A7 B7 V. Description of the Invention Private)-Transmittance: 0%-Whiteness: 1 1 6-Color: White, Uniform-Surface Defects per Meter 2: None (spots, orange peel, blistering, etc.) Charpy impact strength a η: no cracks-cold forming properties: good-damage energy at 2 3 ° C WD: 1 4 3 J-crystallinity: 0% at 50 ° C temperature and 95% relative atmospheric humidity After 1000 hours of storage in a drying cabinet, and a weathering test using Atlas Ci65 Weather Ometer on each side for 1,000 hours, the white PET board has the following properties: a surface gloss (measurement angle 20 °) First side: 120 Second side: 1 1 1 7-Transmittance: 0% —Whiteness: 1 0 8%-Color: white, uniform surface Sink = none (crack, brittleness)-Charpy impact strength an: no crack-cold forming properties: good-damage energy at 2 3 ° C WD: 1 2 6 J-crystallinity: 0% I --- ---- ^ I Pack ------ Order ------ f · ^ (Read the precautions on the back before filling in this page) This paper size applies to China National Standard (CNS) A4 specification (210X2517 (Mm) Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A 7 B7 V. Description of the invention 鲊)-Density: 1.33g / cm3 Comparative Example 1: The coextrusion method as in Example 1 was used to make a 4 mm thick layer and the sequence A ~ B — A multilayer transparent amorphous PET board. The board does not contain antioxidants. The obtained transparent amorphous three-layer p ET has the following properties:-layered structure: A-B-A-coating thickness: 2.5 mm each-base layer thickness: 3.5 mm-total thickness: 4 mm-first surface gloss : 1 9 5 (measuring angle 20 °) 2nd surface: 1 9 3-Transmittance: 9 3%-Clearness: 9 9. 6%-Turbidity: 0.6%-1 surface per meter 2 Defect: None-Charpy impact strength an: No crack-damage energy at 2 3 ° C: 1 3 8 J-cold forming property: good-crystallinity. 0%-density: 1.33g / cm3 at 50 ° After being stored for 1000 hours in a drying cabinet at a temperature of 95% relative humidity, and weathering treatment with Atlas Ci65 Weather Ometer on each side, the PET board showed the following properties after 0 hours. This paper scale applies to China National Standard (CNS) Α4 specification (210X297 mm) ~~-29- --------- f I equipment -------- Order ----- .. 4 balls (Please read the back first Please pay attention to this page, please fill in this page) Printed by A7 B7, Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of the invention) Quality: One surface gloss (the measurement angle is 20 °): 94 The second surface: 9 2 Luminosity 7 1 .2% Clarity: 80.4% Turbidity: 8.4% Total color change △ E: 3. 7 1 Dark color change AL: — 0.3 1 Red and green color change △ A:-0. 8 7 Blue-yellow discoloration ΛB: + 3.5 9-Surface defect: Brittleness-Charpy Impact strength: Brittleness-Damage energy at 23 ° C WD: 4 J Cold formability: Crack formation-Crystallinity · '0% One density: 1.33 g / cm3 Comparative Example 2: A transparent PET plate with a thickness of 4 mm was manufactured as in Example 5. The board does not contain antioxidants or UV stabilizers. The obtained transparent amorphous single-layer PET board has the following properties:-thickness: 4 mm-surface gloss (measurement angle: 20 °) first side: 195 second side: 1 9 2 This paper size applies to Chinese National Standard (CNS) A4 specifications (210X297 mm) _ 3〇- ----- ^ ----- f -install -------- order ------ {# (Please read the notes on the back before filling This page) Printed A7 B7 by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Detailed description of the invention) A light transmittance: 9 2.5% A clearness (image clarity): 100% A turbidity: 0.4% -Surface defect per meter 2: None Charpy impact strength an: No cracks-Damage energy at 23 ° C WD: 1 38 J-Cold forming properties: Good-Crystallinity: 0%-Density: 1.33g / cm3 at 50 ° C and 95% relative atmospheric humidity, after 1000 hours of storage in a drying cabinet, and weathering treatment with Atlas Ci65 Weather Ometer on each side for 1,000 hours, the PET board Has the following properties: a surface gloss (measurement angle 20 °) the first side: 94 the second side: 9 2 a light transmittance: 7 1.2% a clear degree: 8 0.4% a turbidity: 8. 4% total Discoloration ΔΕ: 3.7 1 Dark discoloration AL: — 0.3 1 Red and green discoloration Δ A: — 0. 8 7 Blue and yellow discoloration ΔB: + 3.5 9-Surface defect: brittleness — Charpy impact strength an: brittle crack Γ —------- ^ — pack ------ order ------ f ball (please read the precautions on the back before filling this page) This paper size applies to Chinese National Standard (CNS) A4 specifications (210X297 mm) _ 31-ύ / &J; J rS ^ A7 B7 V. Description of the invention 鲊)-Cold forming properties: crack formation

Damage energy at 2 3t WD: 4 J degrees

m C l · J-^ ----- ^ I equipment-(Please read the precautions on the back before filling this page)

* 1T 印 Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs This paper is sized for the Chinese National Standard (CNS) A4 (210 X 297 mm) -32-

Claims (1)

ABCD 1.11:,?, ·: Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs VI. Patent Application Scope--;; Appendix A: Patent Application No. 86 1 1 0804 Chinese Application for Patent Scope Amendment August 1987 Amendment 1. An amorphous plate having a thickness in the range of 0.8 to 20 mm and comprising polyethylene terephthalate as a main component and at least one antioxidant, wherein the antioxidant is a plate The concentration of the polyethylene terephthalate is 0.1 to 6% by weight, and the antioxidant is selected from the group consisting of sterically hindered phenol, secondary aromatic amine, phosphite, phosphinate, and thioether. Carbodiimide and zinc dibutyldithiocarbamate. 2. The plate according to item 1 of the scope of patent application, wherein the antioxidant is 2-[(2,4,8,10-tetra (1,1-dimethylethyl) dibenzo [d, f] [1,3,2] Dioxafosperpine-6-yl] oxy) ethyl] ethylamine and / or tris (2,4-tributylphenyl) phosphite. 3. The plate according to item 1 of the patent application scope, wherein the plate contains at least one UV stabilizer. 4. If the plate of the scope of patent application item 3, wherein the concentration of UV stabilizer is in the range of 0.01 to 5% by weight based on crystallizable thermoplastics. 05. If the plate of the scope of patent application item 3 or 4 Sheet, wherein the UV stabilizer is selected from 2-hydroxybenzotriazole and triazine. 6. For the sheet of patent application No. 5 in which the UV stabilizer (please read the precautions on the back before filling out this page) The paper size is applicable to the Chinese National Standard (CNS) A4 specification (210X297 mm) ABCD 1.11:,?, ·: Printed by the Consumers' Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs VI. Patent Application Scope--;; Appendix A: Patent Application No. 86 1 1 0804 Chinese Application for Patent Scope Amendment August 1987 Amendment 1. An amorphous plate having a thickness in the range of 0.8 to 20 mm and comprising polyethylene terephthalate as a main component and at least one antioxidant, wherein the antioxidant is a plate The concentration of the polyethylene terephthalate is 0.1 to 6% by weight, and the antioxidant is selected from the group consisting of sterically hindered phenol, secondary aromatic amine, phosphite, phosphinate, and thioether. Carbodiimide and zinc dibutyldithiocarbamate. 2. The plate according to item 1 of the scope of patent application, wherein the antioxidant is 2-[(2,4,8,10-tetra (1,1-dimethylethyl) dibenzo [d, f] [1,3,2] Dioxafosperpine-6-yl] oxy) ethyl] ethylamine and / or tris (2,4-tributylphenyl) phosphite. 3. The plate according to item 1 of the patent application scope, wherein the plate contains at least one UV stabilizer. 4. If the plate of the scope of patent application item 3, wherein the concentration of UV stabilizer is in the range of 0.01 to 5% by weight based on crystallizable thermoplastics. 05. If the plate of the scope of patent application item 3 or 4 Sheet, wherein the UV stabilizer is selected from 2-hydroxybenzotriazole and triazine. 6. For the sheet of patent application No. 5 in which the UV stabilizer (please read the precautions on the back before filling this page) The paper size is applicable to China National Standard (CNS) A4 (210X297 mm) Ministry of Economic Affairs Printed by the Consumer Standards Cooperative of the Central Bureau of Standards A8d79241 cl _ D8______ VI. The scope of patent application is selected from 2— (4,6-diphenyl-1,3 ′ 5—triazine—2 —based) —5— (hexyl ) Oxyphenol and 2 '2 / -methylenebis (6- — (2Η —benzotriazol-2-yl) — 4 — (1' 1,3,3-tetramethylbutyl) phenol) ^ 7. The sheet according to item 1 or 3 of the scope of patent application, wherein the sheet contains at least one coloring agent. 8 • The sheet according to item 7 of the scope of patent application, wherein the colorant is selected from dyes and pigments. 9. The sheet according to item 1 of the patent application scope, wherein at least one side of the sheet is provided with a scratch-resistant coating. 10. The plate sheet 9 according to the scope of patent application, wherein the scratch-resistant coating layer contains silicon and / or acrylic resin. 1 1. The sheet according to item 1 or 3 of the scope of patent application, wherein the sheet has a multi-layer structure, and has at least one covering layer and at least one core layer. 12. The sheet according to item 11 of the scope of patent application, wherein the standard viscosity of polyethylene terephthalate in the core layer is greater than that of the polyethylene terephthalate in the adjacent layer. 1 3. As for the plate of item 11 or 12 in the scope of patent application, wherein the plate has a multi-layer structure with two layers and a core layer sandwiched between the layers 0 1 4. As in the scope of application for patent 1 1 Or the panel of item 12 which contains at least one antioxidant which is included in the coating. 1 5. The sheet according to item 11 or 12 of the scope of the patent application contains at least one UV stabilizer, which is contained in the coating. I jn II order-line (please read the precautions on the back before filling out this page) This paper applies the Chinese National Standard (CNS) A4 specification (210X297 mm) A8 B8 C8 D8 Employee Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs Printing VI. Patent Application Range 16-A method of manufacturing a single-layer amorphous plate such as any one of the patent application scope items 1 to 10, wherein polyethylene terephthalate is based on It is melted together with at least one antioxidant contained in the extrusion. The melt is formed through the die. The formed plate is classified, polished, and cooled in a polishing channel with at least two rollers. The first one of the polishing channels The roller temperature is in the range of 50 to 80 ° C, wherein the concentration of the antioxidant based on the weight of polyethylene terephthalate in the sheet is 0.1 to 6% by weight, and the antioxidant is selected Autosterically hindered phenols, secondary aromatic amines, phosphites, phosphinates, sulfuric acid, carbodiimides and zinc dibutyldithiocarbamate. 1 7. A method of manufacturing a multilayer amorphous plate as claimed in any one of claims 11 to 15 in the scope of patent application, wherein at least one polyethylene terephthalate for the core layer is mainly extruded Melt in a plastic machine, and at least one polyethylene terephthalate used for coating is melted together with the contained at least one antioxidant in a coextrusion machine. The layers of the melt overlap and overlap. The material layer is formed and graded, polished, and cooled in a polishing channel with at least two rollers. The first roller temperature of the polishing channel is in the range of 50 to 80 ° C. The concentration of the oxygenating agent is 0.1 to 6% by weight based on the weight of the polyethylene terephthalate in the plate, and the antioxidant is selected from the group consisting of sterically hindered phenol, secondary aromatic amine, phosphite, and phosphine Acid esters, thioethers, carbodiimide and zinc dibutyldithiocarbamate. 18. The method according to item 16 or 17 of the patent application range, wherein the polyethylene terephthalate is preliminarily extruded at a temperature ranging from 160 to 180 ° C before extrusion. Dry for 4 to 6 hours. 1 9. If you apply for the method of item 16 or 17 in the scope of patent application, of which (please read the precautions on the back before filling this page), vs. Chinese paper standard (CNS) A4 specification (210X297) %) -3-A8 B8 C8 D8 VI. Patent Application Range The temperature of the polyethylene terephthalate melt is in the range of 250 to 320 ° C. 20. The method according to item 16 or 17 of the scope of patent application, wherein the additives selected from the antioxidants __, UV stabilizers and colorants are added through the technology of the parent mixture. 2 1. If the sheet in the scope of patent application No. 1 is used for outdoor and indoor parts. (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economic Affairs This paper size applies to Chinese national standards (CNS> A4 specification (210X297 mm) 4