Flexibility-enhanced polyurethane

A technology of softness and polyurethane prepolymer, which is applied in the field of polyurethane industry, can solve the problems of toughness, elasticity, heat resistance, poor adhesion and wear resistance, unsatisfactory gloss and fullness, and high viscosity of ionic liquids. , to achieve strong lipophilic performance, overcome shedding and cracking, and achieve the effect of large molecular weight

Active Publication Date: 2019-06-18
广州精点高分子材料制品有限公司
View PDF10 Cites 7 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The leather industry covers tanning, shoemaking, leather clothing, leather goods, fur and its products, etc. Before the leather is made into products, the surface of the leather must be treated to facilitate leather processing and improve the performance of the leather. However, these surfaces , but most of these surface treatment agents use acrylic resin as the carrier and are prepared by adding matting powder, silicone oil, solvent and other additives. They have poor elasticity and are easy to fall off. In recent years, polyurethane has become more and more popular among leather manufacturers because of its excellent performance. Gradually replaced acrylic resin, but when ordinary polyurethane is used for finishing agents and retanning agents, its toughness, elasticity, heat resistance, adhesion and abrasion resistance are

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Flexibility-enhanced polyurethane
  • Flexibility-enhanced polyurethane
  • Flexibility-enhanced polyurethane

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0025] The present invention will be further described in detail below in conjunction with specific embodiments.

[0026] The present invention provides a polyurethane with enhanced softness, and its preparation method includes the following reaction steps:

[0027] Step 1: Preparation of ionic liquid polymer with dihydroxyl group;

[0028] S1: Preparation of 1-octadecenyl-3-ethanol imidazole ionic liquid monomer chloride:

[0029] N 2 Protect, add 3 parts of 1-ethanol imidazole and 3.5 parts of 1-octadecenyl chloride into the reaction kettle, heat and reflux in a water bath at 60°C for 7 hours, extract with ether, remove unreacted 1-ethanol imidazole, and rotate at 70°C Evaporate for 2 hours to remove excess 1-octadecenyl chloride to obtain 1-octadecenyl-3-ethanol imidazole chloride ionic liquid monomer.

[0030] The reaction equation is as follows:

[0031]

[0032] S2: Preparation of 1-octadecenyl-3-ethanol imidazole bistrifluoromethanesulfonimide ionic liquid monomer:

[0033] Add 20...

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

The invention provides a flexibility-enhanced polyurethane. A preparation method of the flexibility-enhanced polyurethane comprises the following reaction steps: 1, preparation of an ionic liquid polymer with a dihydroxy group; 2, preparation of an ionic liquid polymer modified polyurethane prepolymer; and 3, preparation of the flexibility-enhanced polyurethane. The modified polyurethane preparedby the preparation method has the advantages of high flexibility, good film forming property, strong mechanical properties, high thermal stability, high chemical stability, high tensile strength, difficult shedding or explosion, energy saving, environmental protection and wide application range.

Description

technical field [0001] The invention relates to the field of polyurethane industry, in particular to a polyurethane with enhanced softness. Background technique [0002] The leather industry covers tanning, shoemaking, leather clothing, leather goods, fur and its products, etc. Before the leather is made into products, the surface of the leather must be treated to facilitate leather processing and improve the performance of the leather. However, these surfaces , but most of these surface treatment agents use acrylic resin as the carrier and are prepared by adding matting powder, silicone oil, solvent and other additives. They have poor elasticity and are easy to fall off. In recent years, polyurethane has become more and more popular among leather manufacturers because of its excellent performance. Gradually replaced acrylic resin, but when ordinary polyurethane is used for finishing agents and retanning agents, its toughness, elasticity, heat resistance, adhesion and abrasi...

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): C09D175/04C09D5/24C09D5/18C09D7/65C09D7/63C08G18/62C08G18/64C08G18/76C08F216/08C08F226/06
Inventor 黄玉真王荣克谢煌黄国有杨海景
Owner 广州精点高分子材料制品有限公司
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap