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

Degradable solvent-free polyurethane synthetic leather material and preparation method thereof

A solvent-free polyurethane and synthetic leather technology, applied in textiles and papermaking, can solve problems such as easy pollution, adverse effects on product safety, and solvent residues, and achieve low cost, low production cost, and simple equipment.

Inactive Publication Date: 2020-01-14
吴彦冰
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This solvent-based production process system mainly has two problems: on the one hand, it is easy to cause pollution problems during the production process; on the other hand, there will be solvent residues in the final finished leather, which will affect the safety of the final product. adverse effects of sex

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
  • Degradable solvent-free polyurethane synthetic leather material and preparation method thereof
  • Degradable solvent-free polyurethane synthetic leather material and preparation method thereof
  • Degradable solvent-free polyurethane synthetic leather material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of easily degradable solvent-free polyurethane synthetic leather material of embodiment 1 of the present invention is made up of each component of following proportioning:

[0041]

[0042]

[0043] 1) Store the low-viscosity and high-molecular-weight NCO prepolymer and the low-viscosity and high-molecular weight OH prepolymer in A and B constant temperature storage tanks respectively according to the weight ratio, and transport them to the mixer according to the weight ratio, and put them into the reaction after mixing fully In the container, put fatty acid triglycerides into the reaction container according to the weight ratio, stir evenly and heat to 120°C for 2 hours for dehydration;

[0044] 2) Cool the mixture to 45°C, add polycaprolactone / polylactide copolymer according to the weight ratio, heat it up to 90°C and keep it warm for 2 hours to fully react;

[0045] 3) Cool the mixture obtained in step 2) to 45°C, add polyethylene glycol according to the...

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 application discloses a degradable solvent-free polyurethane synthetic leather material and a preparation method thereof. The polyurethane synthetic leather material is characterized in that triglyceride and polycaprolactone / polylactide copolymer is added in low-viscosity high-molecular-weight NCO performed polymer and low-viscosity high-molecular-weight OH performed polymer, so that biocompatibility of polyurethane body material is improved, the polyurethane body material is easy to be graded by microorganisms, polyurethane molecular chains are broken, oxidation and hydrolysis reactionsare performed further, and the material is then degraded completely; with adding of polybasic alcohol with high water absorptivity, such as polyethylene glycol, the water absorptivity of the whole material is improved, and the degradation speed of the polyurethane body material is increased further. Equipment for preparation of the material is simple, the preparation process is easy, cost for preparation is low, production speed is high, industrial production is easy to be implemented, and the material has high industrial promotion value.

Description

technical field [0001] The application relates to an easily degradable solvent-free polyurethane synthetic leather material and a preparation method thereof, belonging to the technical field of polyurethane synthetic leather preparation. Background technique [0002] As a substitute for natural leather, polyurethane synthetic leather is widely used in products such as shoes, boots, bags, sofas, automotive interiors and ball games. my country is the largest producer and marketer of polyurethane synthetic leather. However, my country's synthetic leather industry is large but not strong. At present, traditional technology is generally used to produce polyurethane synthetic leather, which requires the use of a large amount of organic solvents, which not only pollutes the environment, but also damages the health of workers. The clean manufacturing technology of synthetic leather has become the mainstream of synthetic leather technology research and development. The technical rout...

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
Patent Type & Authority Applications(China)
IPC IPC(8): D06N3/14D06N3/00
CPCD06N3/0011D06N3/0061D06N3/0097D06N3/146D06N2209/1614D06N2211/28
Inventor 吴彦冰
Owner 吴彦冰
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