Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

High pertormance thermoplastic polyether ester elastomer with low degree of hardness and high melting point

A thermoplastic polyether ester and elastomer technology, which is applied in the field of high-performance thermoplastic polyether ester elastomers, can solve the problems of poor heat resistance of polyether soft segments and product performance degradation, etc.

Inactive Publication Date: 2004-03-10
SINOTEX INVESTMENT & DEV CO LTD
View PDF0 Cites 16 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the poor heat resistance of the polyether soft segment, short-term high temperature can also lead to a significant decline in product performance, so corresponding measures must be taken to improve high temperature thermal stability

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0069] Add 1018.3 parts of dimethyl terephthalate, 708.6 parts of 1,4-butanediol, 1407.1 parts of polytetrahydrofuran ether glycol with a molecular weight of 2000, 2.5 parts of A-1 antioxidant, 2.5 parts of P -1 antioxidant, 4.5 parts of tetrabutyl titanate. The synthesis process is the same as in Comparative Example 1.

Embodiment 2

[0071] Add 1.25 parts of A-1, 1.25 parts of A-2, 2.5 parts of P-1, and the rest are the same as in Example 1. Comparative example 2:

Embodiment 3

[0077] Add 1250.9 parts of dimethyl terephthalate, 870.4 parts of 1,4-butanediol, 383.0 parts of polytetrahydrofuran ether diol with a molecular weight of 1000, 765.9 parts of polytetrahydrofuran ether diol with a molecular weight of 2000, and 2.5 parts in a 10L polymerization kettle A-1 antioxidant, 2.5 parts of P-1 antioxidant, 4.5 parts of tetrabutyl titanate. The synthesis process is the same as in Comparative Example 1. The performance comparison is shown in Table 3.

[0078] project

[0079] After using the polyether with an average molecular weight of 1500, all performances are improved.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

A low-hardness, high-smelting-point and high-performance thermoplastic polyether ester contains the hard short-chain polyester segment consisting of bicarboxylic acid and binary alcohol and the soft polyether ester segment consisting of bicarboxylic acid and oplyalkyleneether diol. In its synthesis the polytetrahydrofuran ether diol and composite antoxidizing agent are used.

Description

technical field [0001] The invention relates to a high-performance thermoplastic polyether ester elastomer with low hardness and high melting point. Background technique [0002] Linear thermoplastic polyether ester elastomer is obtained by copolymerization of dibasic carboxylic acid, glycol and polyalkylene ether glycol. Its Shore hardness ranges from 30-75D, which well fills the gap between plastic and rubber. As an engineering-grade elastomer, it has excellent physical and mechanical properties, such as toughness, fatigue resistance, high strength, wear resistance, oil resistance and chlorine resistance, so its usage has been increasing in recent years. [0003] However, in some cases that require low hardness, such as hardness less than Shore 50D, and high temperature resistance for a certain period of time, such as half an hour at 160-170°C, the product will not be deformed and cracked, and the existing polyetherester elastomers are often Can not fufill. [0004] In t...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): C08G63/66C08K5/524C08L67/02
Inventor 刘森林李泽阳沈贵宏卢林放时寅
Owner SINOTEX INVESTMENT & DEV CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com