PETG (Polyethylene Terephthalate Glycol) modified copolyester

A copolyester and modification technology, which is applied in the field of preparation of modified copolyester, can solve the problems that are not conducive to large-scale promotion, low strength of heat shrinkable film, and affect product quality, so as to prevent depolymerization, improve stability, The effect of increasing the force

Inactive Publication Date: 2019-01-18
腾龙特种树脂(厦门)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the esterification reaction process of PETG bulk copolyester, it is easy to cause the low solubility of each component to cause incomplete dissolution, the esterification reaction is delayed, the stability is low, and the product quality after polycondensation is affected. The softness of PETG body copolyester is strong, resulting in low streng

Method used

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  • PETG (Polyethylene Terephthalate Glycol) modified copolyester
  • PETG (Polyethylene Terephthalate Glycol) modified copolyester

Examples

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Effect test

Embodiment 1

[0022] A PETG modified copolyester, comprising by weight components: 65 parts of terephthalic acid, 15 parts of ethylene glycol, 18 parts of neopentyl glycol, 10 parts of aminopropylmethyldiethoxysilane, phosphoric acid 5 parts of trialkyl ester, 20 parts of trimellitic anhydride, 12 parts of 1,1-cyclopropyldicarboxylic acid, 8 parts of decabromodiphenylethane, 10 parts of 2-acetoxy-4-methoxybenzophenone, 5 parts of 3,5-dichlorobenzenesulfonamide, 6 parts of manganese dioxide, 1 part of stabilizer, 2 parts of antioxidant, 2 parts of compatibilizer.

[0023] The preparation method of above-mentioned a kind of PETG modified copolyester comprises the following steps:

[0024] (1) Mix and stir terephthalic acid, ethylene glycol, neopentyl glycol, and manganese dioxide with a magnetic stirring bar, and stir for 15 minutes at a stirring speed of 1000 r / min under a pressure of 0.12 MPa to obtain a mixed solution, and then stir in a microwave Under heating conditions, trialkyl phosph...

Embodiment 2

[0028] A PETG modified copolyester, comprising by weight components: 70 parts of terephthalic acid, 18 parts of ethylene glycol, 21 parts of neopentyl glycol, 13 parts of aminopropylmethyldiethoxysilane, phosphoric acid 6 parts of trialkyl ester, 23 parts of trimellitic anhydride, 15 parts of 1,1-cyclopropyldicarboxylic acid, 10 parts of decabromodiphenylethane, 13 parts of 2-acetoxy-4-methoxybenzophenone, 9 parts of 3,5-dichlorobenzenesulfonamide, 8 parts of manganese dioxide, 1 part of stabilizer, 2 parts of antioxidant, and 2 parts of compatibilizer.

[0029] The preparation method of above-mentioned a kind of PETG modified copolyester comprises the following steps:

[0030](1) Mix and stir terephthalic acid, ethylene glycol, neopentyl glycol, and manganese dioxide with a magnetic stirring bar, and stir for 20 minutes at a stirring speed of 1000 r / min under a pressure of 0.13 MPa to obtain a mixed solution, and then stir in a microwave Under heating conditions, add trialky...

Embodiment 3

[0034] A PETG modified copolyester, comprising by weight components: 85 parts of terephthalic acid, 20 parts of ethylene glycol, 25 parts of neopentyl glycol, 15 parts of aminopropylmethyldiethoxysilane, phosphoric acid 7 parts of trialkyl esters, 25 parts of trimellitic anhydride, 18 parts of 1,1-cyclopropyldicarboxylic acid, 13 parts of decabromodiphenylethane, 15 parts of 2-acetoxy-4-methoxybenzophenone, 12 parts of 3,5-dichlorobenzenesulfonamide, 10 parts of manganese dioxide, 2 parts of stabilizer, 3 parts of antioxidant, and 3 parts of compatibilizer.

[0035] The preparation method of above-mentioned a kind of PETG modified copolyester comprises the following steps:

[0036] (1) Mix and stir terephthalic acid, ethylene glycol, neopentyl glycol, and manganese dioxide with a magnetic stirring rod, and stir for 25 minutes at a stirring speed of 1000 r / min under a pressure of 0.15 MPa to obtain a mixed solution, and then stir in a microwave Under heating conditions, add tr...

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Abstract

The invention discloses a PETG (Polyethylene Terephthalate Glycol) modified copolyester. The PETG modified copolyester comprises the following components in parts by weight: 65-85 parts of terephthalic acid, 15-20 parts of ethylene glycol, 18-25 parts of neopentyl glycol, 10-15 parts of aminopropyl methyl diethoxysilane, 5-7 parts of trialkylphosphate, 20-25 parts of trimellitic anhydride, 12-18 parts of 1,1-cyclopropyl dicarboxylic acid, 8-13 parts of decabromodiphenyl ethane, 10-15 parts of 2-acetoxyl-4-methoxybenzophenone, 5-12 parts of 3,5-dichlorobenzene sulfonamide, 6-10 parts of manganese dioxide, 1-2 parts of a stabilizer, 2-3 parts of an antioxidant and 2-3 parts of a compatilizer. The preparation method comprises the following steps: mixing, performing microwave heating, and carrying out an esterification reaction in mixed gas so as to obtain an oligomer; charging the oligomer to carry out a condensation polymerization reaction so as to obtain a copolymer; and finally, charging the copolymer and regulating the pH value, and stirring, thereby obtaining the final copolyester. The copolyester is modified by utilizing the esterification and condensation polymerization processes, the characteristics of the original PETG copolyester are changed, and the prepared copolyester has high strength, high temperature resistance, lubricating and anti-adhesion properties and wide application range.

Description

technical field [0001] The invention belongs to the technical field of preparation of modified copolyester, in particular to a PETG modified copolyester. Background technique [0002] PETG is an amorphous high-transparency engineering plastic, which is widely used in daily necessities and industrial supplies. Because of its non-toxic, odorless, high transparency, excellent impact resistance, high rigidity, hardness and good toughness, it also has good Alkali resistance. PETG has been certified by the US FDA and can be used in food and personal care product packaging, medical and health equipment, food and other fields, and can also be used in electronic device packaging. A prominent application field of PETG is the preparation of films, especially transparent films and heat-shrinkable films. PETG film has a series of characteristics such as non-toxic, odorless, high strength, high heat shrinkage rate, good transparency and good packaging effect. The biggest advantage of P...

Claims

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Application Information

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IPC IPC(8): C08G63/20C08K9/02C08K3/22C08K5/03C08L67/00
CPCC08G63/20C08K3/22C08K5/03C08K9/02C08K2003/2262C08L67/00C08L2201/10
Inventor 王潇颖林心后
Owner 腾龙特种树脂(厦门)有限公司
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