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Toughness-enhanced transparent copolyester material and preparation method thereof

A copolyester, transparent technology, applied in the field of C08G, can solve the problems of reduced transparency, limited application scope, weakened toughness of PET polyester resin, etc., and achieves the effect of high toughness

Pending Publication Date: 2022-05-06
广东锦昱材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Thermoplastic polyester materials, such as PET and PTT, have good optical and mechanical properties and stability, and are widely used in various fields such as films, sheets, and hollow containers, but the low glass transition temperatures of PET and PTT affect the It is used under high temperature conditions, and when used in thick-walled parts, the transparency is significantly reduced. At present, the properties of polyester are widely adjusted by copolymerization
[0003] Japanese Patent Application No. 2003-119259 discloses the use of tricyclodecane dimethanol as a copolymerization component of polyester resin to modify PET, which can significantly increase the glass transition temperature of PET polyester resin, but after copolymerization of tricyclodecane dimethanol The toughness of PET polyester resin is obviously weakened, which limits its application range

Method used

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  • Toughness-enhanced transparent copolyester material and preparation method thereof
  • Toughness-enhanced transparent copolyester material and preparation method thereof
  • Toughness-enhanced transparent copolyester material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0056] This example provides a kind of copolyester material, and the preparation raw material of described copolyester material is aromatic dibasic acid (TPA) with 1992g terephthalic acid, with 706g (accounting for 30mol% of aromatic dibasic acid) Tricyclodecane dimethanol, 409g (accounting for 55mol% of aromatic dibasic acid) of ethylene glycol and 410g (accounting for 45mol% of aromatic dibasic acid) of 1,3-propanediol are diols through esterification and polycondensation Obtain, add the n-butyl titanate that accounts for copolyester weight 200ppm before the esterification reaction as the main catalyst, add the cobalt acetate that accounts for copolyester weight 100ppm triphenyl phosphate and 70ppm before the polycondensation reaction as stabilizer and cocatalyst.

[0057] The preparation method of the copolyester material includes: mixing aromatic dibasic acid and diol, passing nitrogen to replace the air in the kettle, adding the main catalyst, raising the temperature to 2...

Embodiment 2

[0059] This example provides a kind of copolyester material, the preparation raw material of described copolyester material is the aromatic dibasic acid (TPA) with 1992g terephthalic acid, with 941g (accounting for 40mol% of aromatic dibasic acid) Tricyclodecane dimethanol, 409g (accounting for 55mol% of aromatic dibasic acid) of ethylene glycol and 319g (accounting for 35mol% of aromatic dibasic acid) of 1,3-propanediol are diols through esterification and polycondensation Obtain, add the n-butyl titanate that accounts for copolyester weight 200ppm before the esterification reaction as the main catalyst, add the cobalt acetate that accounts for copolyester weight 100ppm triphenyl phosphate and 70ppm before the polycondensation reaction as stabilizer and cocatalyst.

[0060] The preparation method of the copolyester material includes: mixing aromatic dibasic acid and diol, passing nitrogen to replace the air in the kettle, adding the main catalyst, raising the temperature to 2...

Embodiment 3

[0062] This example provides a kind of copolyester material, the preparation raw material of described copolyester material is the aromatic dibasic acid (TPA) with 1992g terephthalic acid, with 1410g (accounting for 60mol% of aromatic dibasic acid) Tricyclodecane dimethanol, 409g (accounting for 55mol% of aromatic dibasic acid) of ethylene glycol and 137g (accounting for 15mol% of aromatic dibasic acid) of 1,3-propanediol are diols through esterification and polycondensation Obtain, add the n-butyl titanate that accounts for copolyester weight 200ppm before the esterification reaction as the main catalyst, add the cobalt acetate that accounts for copolyester weight 100ppm triphenyl phosphate and 70ppm before the polycondensation reaction as stabilizer and cocatalyst.

[0063] The preparation method of the copolyester material includes: mixing aromatic dibasic acid and diol, passing nitrogen to replace the air in the kettle, adding the main catalyst, raising the temperature to ...

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PUM

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Abstract

The invention relates to C08G, in particular to a toughness-enhanced transparent copolyester material and a preparation method thereof. The copolyester material is obtained by copolymerizing aromatic dibasic acid and diol; the diol comprises bridge cycloalkane diol and chain alkane diol, and the diol is a repetitive unit of the bridge cycloalkane diol and accounts for 25-90 mol% of the total repetitive unit of the copolyester. According to the copolyester material provided by the invention, the material with relatively high intrinsic viscosity can be prepared by controlling the selection and the use amount of the diol and the dibasic acid in the copolyester material, the material has high toughness, use temperature and transparency, and the application and the stability of the polyester material in various materials such as high-wall-thickness materials, thin films, plates and the like are promoted.

Description

technical field [0001] The present invention relates to C08G, and more specifically, the present invention relates to a transparent copolyester material with enhanced toughness and a preparation method thereof. Background technique [0002] Thermoplastic polyester materials, such as PET and PTT, have good optical and mechanical properties and stability, and are widely used in various fields such as films, sheets, and hollow containers, but the low glass transition temperatures of PET and PTT affect the It is used under high temperature conditions, and when it is used in thick-walled parts, the transparency will be significantly reduced. Currently, copolymerization is widely used to adjust the properties of polyester. [0003] Japanese Patent Application No. 2003-119259 discloses the use of tricyclodecane dimethanol as a copolymerization component of polyester resin to modify PET, which can significantly increase the glass transition temperature of PET polyester resin, but af...

Claims

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Application Information

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IPC IPC(8): C08G63/199C08G63/78
CPCC08G63/199C08G63/78
Inventor 吴义友于明泉彭思瀚左洪亮刘阳黄杰
Owner 广东锦昱材料科技有限公司
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