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Fumaric acid-diol polyester, copolyester of fumaric acid-diol polyester, polyester nucleating agent containing fumaric acid-diol polyester and application of fumaric acid-diol polyester

A polyfumarate diol and copolyester technology is applied in the field of polyfumarate and its copolyester, polyester nucleating agent, and can solve the problem of high cost of nucleating agent materials, Achieve the effect of shortening the molding cycle, increasing the crystallization temperature, and large application advantages

Active Publication Date: 2012-07-11
TSINGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These documents all show that the nucleating agents of polyester are basically small molecules, and their dispersion in polyester has a great influence on the nucleating effect, and the cost of nucleating agent materials is relatively high

Method used

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  • Fumaric acid-diol polyester, copolyester of fumaric acid-diol polyester, polyester nucleating agent containing fumaric acid-diol polyester and application of fumaric acid-diol polyester
  • Fumaric acid-diol polyester, copolyester of fumaric acid-diol polyester, polyester nucleating agent containing fumaric acid-diol polyester and application of fumaric acid-diol polyester
  • Fumaric acid-diol polyester, copolyester of fumaric acid-diol polyester, polyester nucleating agent containing fumaric acid-diol polyester and application of fumaric acid-diol polyester

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The present embodiment is to prepare polybutylene fumarate by bulk melting method.

[0038] Add fumaric acid and 1,4-butanediol (molar ratio: 1:1.05) into a three-neck flask, protect it under nitrogen atmosphere, put it in an oil bath, stir and react at 160°C, 180°C and 220°C for 1 hour respectively ; Then add a transesterification catalyst (such as tetrabutyl titanate) 0.0005g / 1g polymer under a nitrogen atmosphere, stir rapidly to make the catalyst disperse evenly; then evacuate to 60Pa, react at 230°C for 3 hours; discharge to obtain poly Butylene glycol fumarate. The number average molecular weight was 35000 g / mol, and the molecular weight distribution was 2.21.

Embodiment 2

[0040] In this example, a random copolymer of 40 mol% butylene fumarate and 60 mol% butylene succinate was prepared by bulk melting method.

[0041] Add fumaric acid, succinic acid and 1,4-butanediol (molar ratio: 0.4:0.6:1.05) into a three-necked flask, protect it under a nitrogen atmosphere, and place it in an oil bath at 160°C, 180°C and 220°C Stirring and reacting for 1 hour under nitrogen atmosphere; then add a transesterification catalyst (such as tetrabutyl titanate) 0.0005g / 1g polymer under a nitrogen atmosphere, stir rapidly to make the catalyst evenly dispersed; then vacuumize to 100Pa, and react at 230°C for 3 hours; discharging to obtain a random copolymer of 40 mol% butylene fumarate and 60 mol% butylene succinate. figure 1 Its 1H NMR map. The number average molecular weight was 47000 g / mol, and the molecular weight distribution was 1.96.

Embodiment 3

[0043] In this example, random copolymers of various dibasic acids and various dibasic alcohols were prepared by the bulk melting method.

[0044] A certain mole of fumaric acid, succinic acid, adipic acid, malonic acid and 1,4-butanediol, hexanediol, pentanediol, decanediol (the molar ratio is 0.8:0.1:0.05:0.05 : 0.85: 0.1: 0.05: 0.05) was added in the there-necked flask, under nitrogen atmosphere protection, placed in an oil bath at 160°C, 180°C and 220°C and stirred for 2 hours respectively; then under nitrogen atmosphere, the transesterification catalyst ( Such as tetrabutyl titanate) 0.0005g / 1gPBF, stirring quickly to disperse the catalyst evenly; then vacuumize to 80Pa, and react at 230°C for 3 hours; the random copolymer. The number average molecular weight was 31000 g / mol, and the molecular weight distribution was 2.50.

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Abstract

The invention provides fumaric acid-diol polyester, copolyester of fumaric acid-diol polyester and a polyester nucleating agent containing the fumaric acid-diol polyester. The invention simultaneously provides a polyester complex containing the polyester nucleating agent. The fumaric acid-diol polyester and copolyester thereof can effectively raise the crystallization temperature of aliphatic polyester or aliphatic and aromatic copolyester materials, lower the crystallization time and reduce the spherocrystal sizes, are beneficial to improvement of the transparency and other relevant performances of the materials and shortening of the molding cycle of the products.

Description

technical field [0001] The invention relates to an ester polymer, in particular to a polyglycol fumarate and its copolyester, as well as a polyester nucleating agent containing it and its application. Background technique [0002] Due to the requirements of environmental protection and sustainable development, people are accelerating the research and development of environmentally friendly materials. Biodegradable polyesters have thermodynamic properties and mechanical properties similar to commonly used polyolefins, and are currently the focus of research and application of fully biodegradable materials. Currently polybutylene succinate, copolymer of butylene succinate and butylene adipate, copolymer of butylene adipate and butylene terephthalate, poly 3 -Hydroxybutyrate, copolymers of 3-hydroxybutyric acid and 3-hydroxyvaleric acid, copolymers of 3-hydroxybutyric acid and 3-hydroxycaproic acid, etc. have been commercially produced. However, slow crystallization rate, low...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G63/52C08G81/00C08L67/06C08L67/02C08L87/00
Inventor 郭宝华叶海木王瑞冬徐军
Owner TSINGHUA UNIV
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