TW386043B - Papermaking machine fabrics, filters and reinforcing layers for elastomers comprising monofilaments comprising specific copolyesters, stabilized copolyesters and use thereof - Google Patents

Description

V. Description of the invention (1), the present invention relates to the use of specific fluorene dicarboxylic acid-based copolyesters for the manufacture of paper machine fabrics, filter membranes and elastic reinforcement layers. This copolyester is more suitable for technical purposes, combining High dimensional stability and excellent heat resistance, chemical resistance and water resistance. Monofilaments used for technical purposes must withstand high mechanical stresses in most cases of use 'and in many cases the materials must also provide moderate resistance to stresses caused by thermal, chemical or other environmental factors. After long-term use in all these stressful environments, the material must maintain good dimensional stability and fixed stress-strain characteristics. One of the technical application examples requires that the monofilaments used in paper machine fabrics must combine high mechanical, thermal, and chemical resistance, especially in the fourdrinier section, wet-press section, and drying section. This use requires monofilament materials to have high lifting modulus, high ultimate strength, good knot length and loop strength '. High abrasion resistance, and high hydrolysis resistance, in order to Withstands high stresses in the papermaking process and ensures adequate life of the fabric. Paper machine fabrics are currently mainly made of polyethylene terephthalate with warp yarns and polyethylene terephthalate with nylon 6 or nylon 6 6 monofilaments for wefts. Some fabrics have the disadvantage of being stretched in the conveying direction during the use of a paper machine, so they must be redrawn. Although attempts to develop synthetic monofilaments suitable for making durable paper machine fabrics have never stopped, due to the diverse needs of these technological products, only some requirements in this field have been met so far. In order to serve as a substitute for poly (ethylene terephthalate), US Patnet No. 5,169,499 discloses that 1,4-bishydroxymethylcyclohexane, terephthalic acid and isophthalic acid are the basic paper standards applicable in China. Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back ?. Matters before filling out this page) .1-Pack -------- Order -------- -Line ~ 4 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs -4-

V. Description of the invention (1), the present invention relates to the use of a specific fluorene dicarboxylic acid-based copolyester for the manufacture of paper machine fabrics, filter membranes and elastic reinforcement layers. High dimensional stability and excellent heat resistance, chemical resistance and water resistance. Monofilaments used for technical purposes must withstand high mechanical stresses in most cases of use 'and in many cases the materials must also provide moderate resistance to stresses caused by thermal, chemical or other environmental factors. After long-term use in all these stressful environments, the material must maintain good dimensional stability and fixed stress-strain characteristics. One of the technical application examples requires that the monofilaments used in paper machine fabrics must combine high mechanical, thermal, and chemical resistance, especially in the fourdrinier section, wet-press section, and drying section. This use requires monofilament materials to have high lifting modulus, high ultimate strength, good knot length and loop strength '. High abrasion resistance, and high hydrolysis resistance, in order to Withstands high stresses in the papermaking process and ensures adequate life of the fabric. Paper machine fabrics are currently mainly made of polyethylene terephthalate with warp yarns and polyethylene terephthalate with nylon 6 or nylon 6 6 monofilaments for wefts. Some fabrics have the disadvantage of being stretched in the conveying direction during the use of a paper machine, so they must be redrawn. Although attempts to develop synthetic monofilaments suitable for making durable paper machine fabrics have never stopped, due to the diverse needs of these technological products, only some requirements in this field have been met so far. In order to serve as a substitute for poly (ethylene terephthalate), US Patnet No. 5,169,499 discloses that 1,4-bishydroxymethylcyclohexane, terephthalic acid and isophthalic acid are the basic paper standards applicable in China. Standard (CNS) A4 specification (210 X 297 mm) (Please read the note on the back ?. Matters before filling out this page) .1-Pack -------- Order -------- -Line ~ 4 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs -4-A7 S8.! 2.20 Amendment Date --------- B7 _ —. Bu Yi, V. Description of Invention (2)- The copolymer of the printed materials of the cooperative of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs has good hydrolysis resistance, but its strength in the direction of the long axis and the strength of the interlocking strength are relatively poor. Other alternative materials, such as polyphenylene sulfide, have the same good hydrolysis resistance ‘but expensive to produce’ and have a low initial modulus. Polyester fibers have a wide range of mechanical and textile properties, such as warp, different spinning, drawing and relaxation conditions, can be made from polyethylene terephthalate monofilament with wide differences in properties. However, efforts to meet monofilament materials with high dimensional stability, abrasion resistance, chemical resistance, and hydrolysis resistance required by papermaking fabrics have been successfully completed so far. In order to find polyester fibers that are as suitable as possible for many technical applications, various attempts have been made to replace polyethylene terephthalate with other polyesters or copolyesters. Examples of alternative polyesters that have been developed are European patent EP-A-2 0 2,631, Japanese patent JP-A 73-96,830, and US patent 113-Aug. 5,405,685. Polyvinylacetate, and a copolymer made of 4, '4 **-biphenyldicarboxylic acid and 2,6-fluorenedicarboxylic acid. Patent WO-A-93 / 02122 discloses a fiber made of polyester made from 4, diphenyldicarboxylic acid and 2,6-dicarboxylic acid. These fibers, which are made from 2,6-dicarboxylic acid as a raw material through high-draw drawing without the need for post-drawing procedures, have conventionally seen high axial strength and high modulus. However, the use of these prior art materials for the production of monofilaments for paper machine fabrics has some doubts, as empirically high modulus materials are often accompanied by low knot strength and interlocking strength. This paper size applies to China National Standard (CNS) A4 (210 X 297 mm) Ί ---------— 1 ^ '--------- Order -------- -Line ^-(Please read the notes on the back before filling this page) A7 S8.! 2.20 Amendment Date --------- B7 _ —. Bu Yi, V. Description of the Invention (2)- The copolymer of the printed materials of the cooperative of employees of the Intellectual Property Bureau of the Ministry of Economic Affairs has good hydrolysis resistance, but its strength in the long axis direction and the interlocking strength are relatively poor. Other alternative materials, such as polyphenylene sulfide, The ground has good hydrolysis resistance, but is expensive to produce, and has a low initial modulus. Polyester fibers have a wide range of mechanical and textile properties, such as warp, different spinning, drawing, and relaxation conditions. Polyethylene terephthalate produces monofilaments with a wide range of properties. However, efforts to meet the high dimensional stability, abrasion resistance, chemical resistance and hydrolysis resistance of monofilament materials required for paper machine fabrics have been made so far Yan Song was completely successful. In order to find polyester fibers that are as suitable as possible for many technical applications, there have been many differences. Try to use other polyesters or copolyesters to replace polyethylene terephthalate. Examples of alternative polyesters that have been developed are European patent EP-A-2 0 2,631, Japanese patent JP-A-73-96, 830, and U.S. Patent 113-Bayi. 5,405,685, and a polyvinyl acetate disclosed by 4, '4 · * -biphenyldicarboxylic acid and 2,6-dicarboxylic acid The copolymer WO-A-93 / 02122 discloses fibers made of polyesters made from 4, diphenyldicarboxylic acid and 2,6-dicarboxylic acid. These are composed of 2,6-dicarboxylic acid. Fibers made from raw materials that are drawn through high-drawing without the need for post-drawing processes are conventionally found to have high axial strength and high modulus. However, these prior art materials are used to produce monofilaments for paper machine fabric However, there are some doubts, because empirically high-modulus materials are often accompanied by low knot strength and interlocking strength. This paper size applies to the Chinese National Standard (CNS) A4 specification (210 X 297 mm> Ί -------- ---— 1 ^ '---------- Order --------- line ^-(Please read the notes on the back before filling this page) Staff Consumption of Central Bureau of Standards, Ministry of Economic Affairs A7 B7 printed by the cooperative V. Description of the invention (3) 4,4, Monophenyldicarboxylic acid polymer has extremely fast crystallization rate, making the production feasibility of monofilament made of this material questioned, because it is too fast / Rapid crystallization will lead to early embrittlement of the monofilament even in the actual production process, causing the monofilament to break before reaching full orientation. Japanese Patent JP — A-4 1- 9 1 4 discloses polyethylene 2,6-acetate Ester monofilament is suitable for making screen printing fabrics. After modification, this polymer contains up to 15% of phthalic acid or isophthalic acid units. At present, it has been found that monofilaments with high modulus, improved knot strength and interlocking strength, and excellent chemical resistance and hydrolysis resistance can be produced from specific copolymers, especially in hot and humid environments. This copolymer has made it practical and feasible to produce high modulus shrouds with extremely high mechanical strength. The present invention thus provides a paper machine fabric, a filter membrane, and an elastic reinforcement layer comprising a monofilament containing 8 5-9 9 mo 1% chemical structure I structural repeat unit and 1-15 mo 1% chemical structure Π structural repeat unit monopolyester

-0C-R2-C0-0-R3-0- (II. Where R 1 is a dihydroaliphatic or cycloaliphatic alcohol or a derivative of a mixture of such alcohols' R2 is aliphatic, cycloaliphatic, or monocyclic Aromatic dicarboxylic acids, or derivatives of such 'dicarboxylic acids, R3 uses one of R1's definitions, and its quantitative data depends on the aggregate paper size of the polymer, which is applicable to China National Standard (CNS) A4 specifications. (210X297 Mm) (Please read the notes on the back before filling out this page)

A7 B7 printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs i. Description of the invention (4) The copolymer contains 90% to 9m of 1% structural unit with chemical formula I and 4-10% structural unit with chemical formula Π good. The dicarboxylic acid component in the structural repeating unit of the chemical formula I may be any derivatized dicarboxylic acid, for example, it may be 1,8 —, 1,4 1, 1, 5 —, 2, 7 —, and especially 2 , 6-A dicarboxylic acid derivative. These functional functional groups may be substituted with one or two inert groups, and in this case have alkyl or alkoxy or halogen atoms. The alkyl group may contain one to six carbon atoms, a straight chain is preferable and a branched chain is also preferable, and a methyl group or an ethyl group is particularly preferable. The alkoxy group contains one to six carbon atoms in the alkane chain, and a straight chain is preferably branched, and a methoxy group or an ethoxy group is particularly preferable. The halogen atom may be chlorine or bromine. When any functional group is derived from a dihydroaliphatic or cycloaliphatic alcohol, such alcohols can be primary, secondary or tertiary alcohols. Aliphatic alcohols preferably contain two to four carbon atoms, with the special ones being 1,3-propanediol, 1 '4, butanediol or 1,2-ethylene glycol. Other alcohols used in the present invention are bis, tri, or tetraethylene glycol, or tetraprop propylene 1 eneg 1 y ο 1, or polyglycols such as bis, tri, or tetrabutylene glycol * these Polyglycols are mixed in small amounts in the relevant alkanediols. The preferred cycloalkanol has a six-carbon ring, and the preferred case is 1,4-bismethanol cyclohexane. The above-mentioned aliphatic alcohol or cycloaliphatic alcohol group may be substituted with one or two inert groups such as an alkyl group or an alkoxy group or a halogen atom. Alkyl groups may contain from one to six carbon atoms, branched chains are also preferred, and straight chains are preferred, with methyl or ethyl being preferred. The oxygen group of the hospital can contain one to six carbon atoms, and branched or straight chains are preferred. Chinese paper standard (CNS) A4 size (210 X297 mm) is applicable. (Please read the notes on the back first.) (Refill this page)

Order printed by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 ______ B7____ 5. Description of the invention (5) Oxygen or ethyl is best. Halogen may be a chlorine or bromine atom. The aliphatic dicarboxylic acid group may be a linear or branched alkenyl 'saturated or ethylenically unsaturated alkenyl group, in which the number of carbon atoms is preferably from-to ten. For example, groups derived from adipic acid, sebacic acid, succinic acid or trans-butenedioic acid. A cycloaliphatic dicarboxylic acid group is conventionally a five-carbon ring, especially a six-carbon ring, such as 1,4-cyclohexyl. The monocyclic aromatic dicarboxylic acid group is conventionally a six-carbon ring 'such as 1,3- or 1,4-phenylene. The above-mentioned aliphatic, cycloaliphatic, or aromatic dicarboxylic acid group may be substituted with one or two inert groups such as an alkyl group, an alkoxy group or a halogen atom. The alkyl group may contain one to six carbon atoms, and branched or straight chains are preferred, with methyl or ethyl being the most preferred. The alkoxy group may contain one to six carbon atoms' and it may be branched or linear, and methoxy or ethoxy is preferred. The halogen may be a chlorine or bromine atom. The intrinsic viscosity of the copolyester used in the present invention is conventionally at least 0.5 dl / g 'and preferably 0.6 to 1.5d Ι / g. The intrinsic viscosity was measured in a dichloroacetic acid solution of the copolyester at 25 ° C. The copolyester used in the present invention can exert its advantages in various uses after being stabilized by heat resistance and chemical decomposition resistance. The stabilization method includes adding a polyester stabilizer or a capping agent. Chain cap (°) In a particularly preferred system, the chain terminal carboxyl groups of the copolyester used in the present invention can be capped by reaction with carbodiimide. In another special and better system, the copolyester and carbon paper used in the present invention are compliant with the Chinese National Standard (CNS) A4 specification (210 公 297 mm) " _ 8 I (Please read the note on the back first) (Notes on this page)

Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 _ · V. Description of the Invention (6) After the reaction of the diimide, the end group contained in the copolyester will react preferentially with the mono- or polycarbodiimide, especially It is a reaction with a mixture of the two. This will affect the cover of the terminal carboxyl group β. Based on the weight of the copolyester, the amount of monocarbodiimide is preferably 0.4-1%, and 0.4-5. 0.6-5% is preferably β polycarbodiimide in an amount of 0.15-2. 25%, so 0.75-1.8% is preferred. Polyester end chain stabilization information is derived from the following patents: D E-A-4,307,392, EP-A-503, 4 21, and EA-A-417,717. The above-defined stabilizing copolyesters with specific end chain groups also form the subject of the present invention. The diameter of the monofilament used in the present invention is conventionally 0.1 to 2 mm, preferably 0.15 to 1 mm. The production method of the monofilament used in the present invention will be described as follows: A better choice is made for (1) the drawing temperature and (2) the drawing conditions determined by the extrusion rate and the take-out rate, which can make the present invention The monofilament used has the following properties: The initial modulus at 25 ° C is higher than 12 N / te X, and preferably higher than 16 N / te X. The toughness is 30-70cN / tex, preferably 40-60cN _ / t e x. Toughness extension is 2-20%, preferably 5-10%. The interlocking strength is 1 5 — 40 cN / t ex, and 20 — 35. This paper size is applicable to China National Standard (CNS) A4 specifications (210X297 mm.) ~ ~~ (Please read the precautions on the back before reinvesting # (This page) ♦: · Order A7 B7 Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs. 5. Description of Invention (7)-c N / te X is better. -Knot strength at 2 5-5 〇c N / te X is better at 30-4 5 c N / te X "at 180 ° C dry heat shrinkage ratio 1-2 0% at 5-1 0 % Better ® By routinely measuring the dependence between the demand properties of the monofilament cist and the polyester component and the above-mentioned spinning conditions, the exact composition and spinning conditions of the monofilament with a specific combination of properties can be obtained; the present invention Both the monofilament used and the aforementioned copolyester may contain additives such as catalyst residual processing aids, stabilizers, antioxidant plasticizers, and lubricants. The above-mentioned additives are usually present at a concentration of less than 10% by weight, preferably 0 • 0 1-5%. 0 Examples of catalyst residues include antimony trioxide or tetraethoxy titanate, plus X additives or lubricants. Siloxanes, especially polymeric t * .MU dioxane or diarylsiloxane or pyrene, and organic carboxylic acids containing more than six carbons, aliphatic% aromatic and perfluorinated esters and ethers 0 The monofilament may contain inorganic or nbr male 3 & SW horizontal pigments or matting agents such as organic dye pigments or dioxin, or carbon black as a color enhancing or conductive additive. 〇 In another preferred system, the monofilament used in the present invention may contain other polyesters, such as extrudable fluoropolymers. The addition of fluoropolymers to the monofilament production process is patented DE — h — 4, 3 0 7 3 Case of 94. The copolyester used in the present invention is Off-bicarboxylic acid and UfUt diol compounds are bound to Chinese National Standards (CNS) A4 specifications (210 X 297 mm) by page size. Please read the precautions before reading% -10-Consumption by Central Standards Bureau, Ministry of Economic Affairs Cooperative printed A7 B7 V. Description of the invention (8) It is prepared by polycondensation reaction. It is advantageous to first conduct polycondensation in the molten state to a moderate intrinsic viscosity value, and then further condense to the final viscosity in the solid state. This high molecular weight polyester After the polycondensation in the solid state, the monofilament used in the present invention is made by the traditional melt spinning method. The copolyester is conventionally dried immediately before spinning, and the preferred drying method is heating under dry air or drying under reduced pressure. The polyester is then melted in the extruder, filtered in a spinning package and drawn through a spinneret. This molten drawn yarn can be cooled in a spinning bath (for example, at a water temperature of about 70 ° C), The melt copolyester extrusion rate is a high take-up or take-out rate * The favorable melting temperature for the production of the monofilament used in the present invention has been proven at 2 70 — 3 1 0 ° C, and at 2 8 0 — 3 0 0 ° C is better; the shrinkage (drawndown) is 1: 1.5 to 1: 5.0, and it is better to use 1: 2 to 1: 3. Monofilament will appear worse at higher shrinkage The elongation and mechanical properties, especially the knot strength and interlocking strength decreased sharply. It is more advantageous to cool the extracted monofilament quickly in a knotting bath. In order to achieve economical production of the monofilament in the present invention, the speed of drawing the filaments must be maintained at 15-30 m / mi η, and preferably 10-200 m / m i .η. The silk drawn in this way will be subjected to afterdrawing with a composite section, especially a two-stage or three-stage afterdrawing, with a total drawing ratio of 1: 4 to 1 ·· 8, and 1: 5 It is preferably from 1 to 7; it is then heated at a constant temperature of 190 to 250 ° C, and preferably from 200 to 220 ° C; its long paper size is applicable to the Chinese National Standard (CNS) A4 specification ( 210X297 mm) _ Μ _ ~~ (Please read the precautions on the back before singing this page)

Printed by the Consumers' Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs A7 B7 V. Description of the invention (9) The degree of fixation or allowance is 2-10% and a shrinkage of 3-6% is preferred. The invention also provides this fabric for the production of paper machine fabrics , Filter membrane or elastic material reinforcement. This monofilament can be woven into a paper machine fabric by a conventional full-width weaving machine with the usual parameters for weaving polyethylene terephthalate. · The diameter of 17mm 'is 0.2mm at the front weft and 0.22mm at the rear weft. This fabric has very good dimensional stability and abrasion resistance, and this property can be further improved by using polyamide monofilament as the weft. The fabrics produced in this way must usually be post-treated with a suitable sized heater to ensure that the required properties of the specific paper machine fabrics are obtained in individual cases. Paper machine fabrics made from the monofilaments used in the present invention and used Compared with traditional polyethylene terephthalate monofilament products, it has better dimensional stability in both warp and weft directions, which makes the paper machine run faster and smoother, and leads to the paper produced. Advantages in quality and yield. Fabrics made from instant monofilaments can also be used as filter membrane materials with extremely stable mechanical and chemical properties, or reinforced belts with high strength and dimensional stability requirements. '' The following examples illustrate the invention, but the invention is not limited to the following examples. This paper size applies to China National Standard (CNS) A4 specification (210X297 mm) ---- ^ ------- 1 genus-(Please read the precautions on the back before rolling #this page), τ- 12-Printed by A7 B7, Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs 5. Description of the Invention (10) Example 1 From 9 2mo 1% of 2,6-dimethyldicarboxylic acid and 8 mo of 1% terephthalic acid The copolymer obtained by the reaction of dimethyl ester and ethylene glycol was drawn at a melting temperature of 300 ° C, and the monofilament was drawn at a drawing rate of 1: 6.0 in a spinning bath at 70 ° C. The resulting monofilament has the following properties: diameter ·· 0 · 1 7 mm ultimate strength: 5 5cN / t ex ultimate extension: 10. 5% modulus · 1 8 N / te X interlocking strength: 2 5 c N / tex Knot strength: 29cN / tex Based on a reference comparison, the knot strength of a monofilament made from poly (ethylene 2,6-naphthalate) through the same process is 5cN / tex * Example 2 After the monofilament having a diameter of 0.5 mm produced by the method of Example 1 was treated with saturated steam at 13 5 ° C for 80 hours, its residual limit was 5 2%. After adding carbodiimide, the above residual ultimate strength can be increased to 90%. Based on a reference comparison, the residual ultimate strength of the polyethylene terephthalate monofilament stabilized with carbodiimide was 35%. This k-sheet scale applies the Chinese National Standard (CNS) A4 specification (210X297 mm) " " " ~ -Id 1 {Please read the precautions on the back before you go to 1 {舄 This page)

Claims (1)

_Λ Christine, τχ fiber MS A8 BS C8 D8 6. Application for patent scope 1. A paper machine fabric, which contains 85-99mo 1% chemical structural unit I and 1-15m structural unit 1 Monofilament of copolymer, -0C C 0-0-R-0 I (II), -0C-R2-C0-0-R3-0- where R1 is a dihydroaliphatic or cycloaliphatic alcohol or a derivative of a mixture of such alcohols, and R2 is a lipid Family, cycloaliphatic, or monocyclic aromatic dicarboxylic acids, or derivatives of such dicarboxylic acids, R3 uses one of the various definitions of R1, and its quantitative data depends on the total polymer. 2. For example, the paper machine fabric of the scope of patent application, the copolyester contains 90-96mo 1% structural repeat unit of chemical formula I and 4-10 structural repeat unit of chemical formula Π. Printed by the Consumer Cooperatives of the Central Bureau of Standards of the Ministry of Economics. 3. For the paper machine fabric of the scope of patent application, the dicarboxylic acid component in the structural repeating unit in Chemical Formula I is 2,6-a dicarboxylic acid derivative. 4. For example, the paper machine fabric of the scope of patent application, wherein R1 4-butanediol, or especially R3, is derived from 1,3-propanediol which is 1,2-ethylene glycol. 5. The papermaking machine fabric according to item 1 of the patent application scope, wherein R1 and / or R3 are derived from 1,4-cyclohexanedimethanol. This paper size applies to Chinese national standard (CNS> A4 specification (210X297 mm) -14-386043 __D8 ____ VI. Application for patent scope 6. For the paper machine fabric of the first patent scope, where R2 is made of terephthalic acid and /. Derived from metaphthalate. N < · 7 · As in the scope of patent application item 1; t paper machine fabric, where the monofilament ___ contains at least one extrudable polymer, with fluorine-containing extrudable polymer Better. 8.—Seed drops; film containing food containing: 8 .. 5-9 9 m ο 1%. Chemistry. Structural unit of formula I and 1-15m ο 1% chemical formula Π . Monofilament of structure-repeated mono-copolymer, -------- · '' ------ I-^-ss'1 * (Please read the precautions on the back before this page) Order Where R 1 is a dihydroaliphatic or cycloaliphatic alcohol or a derivative of such alcohol mixtures, and R 2 is an aliphatic, cycloaliphatic, or monocyclic aromatic dicarboxylic acid, or a derivative of such a dicarboxylic acid R3 uses one of R1's definitions, and its quantitative data depends on the total amount of polymer. 9. The filter membrane according to item 8 of the scope of patent application, wherein the copolyester contains 90-96 m ο 1% structural repeat unit of chemical formula I and 4-10 mol 1% structural repeat unit of chemical formula. 10. The filter membrane according to item 8 of the scope of patent application, wherein the bisacid component in the structural repeat unit in chemical formula Ϊ is 2,6- 为 I; the carboxylic acid derivative 〇1 1 8 filter membranes, of which R 1 and / ΐ paper size apply + National Standards (CNS) Α_ · (210x297 public director) 1-15-3 ^. Printed by the Central Bureau of Standards, Ministry of Economic Affairs, Consumer Cooperatives A8 B8 C8 D8 386043, the scope of patent application, or R · 3 is derived from 1,3-propanediol, 1,4-butanediol, or especially 1,2-ethylene glycol. 1 2. The filter membrane according to item 8 of the patent application, wherein R 1 and / or R3 are derived from 1,4-cyclohexanedimethanol. 1 3. The filter membrane according to item 8 of the patent application, wherein R 2 is derived from-,-»· terephthalic acid and / or isophthalic acid. '14. For example, the filter membrane of item 8 of the scope of patent application, the application monofilament contains at least one extrudable polymer, and the fluorine-containing extrudable polymer is more than "15 · —a kind of elastic reinforcement layer, which Contains monofilaments containing 8 5-9 9 mo lf% structural repeat unit of chemical formula I and 1-1 5mo 1% structural repeat unit of chemical formula Π structure repeat unit, (please read the precautions on the back first and then this page) C0-0- -oc-r2-co-o-r3-o- 0 I) Printed by the Consumer Cooperatives of the Central Standards Bureau of the Ministry of Economic Affairs 4 (II), where R 1 is a dihydrol, or a cycloaliphatic alcohol or Derivatives of this type of Weiwei decoction, R 2 is an aliphatic hydrazone, cycloaliphatic 'or zero-ring aromatic dicarboxylic acid, or is such a derivative. Dicarboxylic acid derivatives, R 3 uses the terms of R 1 One of the definitions, its quantitative data depends on the total amount of polymer "16. For example, the" Jt strong layer of bullet 15 "in the scope of patent application, where the copolyester contains 9 0 _ 9 6 m ο 1% chemical test I Structural repeat unit and .1% chemical formula Π Structural repeat unit is applicable to China National Standard (CNS) A4 specification (210 x 297 public envy) -16-16 3B6043 bs ____ D8 " VI. Application scope 1 7 · For example, the ammunition reinforcement layer of item 15 in the scope of patent application, wherein the dicarboxylic acid component in the structural repeating unit in Chemical Formula I is a 2,6-dicarboxylic acid derivative. / '1 8. According to the item 15 of the scope of the patent application, wherein R 1 and / or R 3 are composed of 1,3-propanediol, 1,4-butanediol, or especially 1,2 — Derived from ethylene glycol. 19 · The elastic material reinforcement layer according to item 15 of the scope of patent application, wherein R 1 and / or R 3 are derived from 1,4-cyclohexanedimethanol. 20 · The elastic material reinforcement layer according to item 15 of the scope of patent application, wherein R 2 is derived from terephthalic acid and / or isophthalic acid. 2 1. The elastic material reinforcement layer according to item 15 of the scope of patent application, wherein the wire contains at least one extrudable polymer, and a fluorine-containing extrudable polymer is preferred. 2 2. — A copolymer containing 8 5 to 9 9 mo 1% chemical structure I repeating single-position! 1 1 5 m ο 1% chemical formula Π 1 structure repeat unit -0C-R2-CO-O-R3-O- (ID, printed by the Consumer Cooperative of the Central Bureau of Standards of the Ministry of Economic Affairs -17-1% where R 1 is a dihydroaliphatic or cycloaliphatic alcohol or a mixture of such alcohols Derivatives, R 2 is an aliphatic, cycloaliphatic, or monocyclic aromatic dicarboxylic acid, or a derivative of such a dicarboxylic acid. This paper size applies to Chinese National Standard (CNS) A4 (210X 297 mm) ) Fastis B8 D8 々, the scope of patent application R3 uses one of the R1 definitions, and its quantitative data depends on the total amount of the polymer, in which the end chain group has been shielded by a capping agent. A carbodiimide is preferred as the capping agent. 23. For example, the copolymer of item 22 in the scope of patent application can achieve a stabilization effect by reacting with a mono and / or polycarbodiimide, and the covering effect is a single carbonization. The imine and polycarbodiimide are mixed for use. 2 4. For example, the copolymer of item 22 in the scope of the patent application, which is made of monofilament with boll to produce fabric and fabric. Educational enhancement layer. Printed sheet of paper by the Consumer Cooperative of the Central Standards Bureau of the Ministry of Economic Affairs |% 9 2