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

Soft high-stripping hydrolysis-resistant wet leather resin and preparation method thereof

A high-peeling, hydrolysis-resistant technology, applied in textiles and papermaking, can solve the problems of insufficient strength of polyether polyols and complicated processes

Inactive Publication Date: 2021-04-23
浙江旭川树脂有限公司
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention uses polyether polyol and polyester polyol to copolymerize, and uses polyester polyol to improve the problem of insufficient strength of polyether polyol, and a small amount of polyester polyol does not affect the hydrolysis resistance of the whole resin, and has moderate solidification rate, Fast washing speed, soft hand feeling, high peel strength, and hydrolysis-resistant resin; through formula design, taking into account comprehensive performance, solving complex process problems, and preparing resin with excellent comprehensive performance

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
  • Soft high-stripping hydrolysis-resistant wet leather resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0030] Weigh the raw materials by weight percentage, put 2070kg mixed polyether polyol, 50kg polyester polyol, 80kg chain extender A and 4000kg DMF into the reaction and stir evenly to obtain the preliminary mixed material;

[0031] Then put in 600kg of MDI and heat it up to 80°C for 60 minutes, then put in the remaining 200kg of MDI, add viscosity, add the remaining 3000kg of DMF in batches, add 5kg of methanol, and finally add 100kg of wet film-forming agent and 100kg of cells Conditioning agent, mixed evenly, cooled and discharged to obtain the final resin product, which was recorded as product 1.

Embodiment 2

[0033] Put 1950kg of mixed polyether polyol, 170kg of polyester polyol, 80kg of chain extender A and 4000kg of DMF into the reaction and stir evenly to obtain a preliminary mixed material;

[0034] Then put in 650kg of MDI and heat it up to 80°C for 80 minutes, then put in the remaining 150kg of MDI, add viscosity, add the remaining 3000kg of DMF in batches, add 5kg of methanol to terminate, and finally add 100kg of wet film-forming agent and 100kg of cell regulator agent, mixed evenly, cooled and discharged to obtain the final resin product, which was recorded as product 2.

Embodiment 3

[0036] Put 1850kg of mixed polyether polyol, 270kg of polyester polyol, 80kg of chain extender A and 4000kg of DMF into the reaction and stir evenly to obtain a preliminary mixed material;

[0037] Then put in 700kg of MDI and heat it up to 70°C for 90 minutes, then put in the remaining 100kg of MDI, add viscosity, add the remaining 3000kg of DMF in batches, add 5kg of methanol to terminate, and finally add 100kg of wet film-forming agent and 100kg of cell regulator agent, mixed evenly, cooled and discharged to obtain the final resin product, which was recorded as product 3.

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 belongs to the field of resin materials, and relates to soft high-stripping hydrolysis-resistant wet leather resin and a preparation method thereof. The soft high-stripping hydrolysis-resistant wet leather resin is prepared from the following raw materials in percentage by weight: 15%-30% of mixed polyether polyol, 0.5%-5% of polyester polyol, 4%-6% of diphenylmethane-4.4'-diisocyanate, 0.5%-1% of a diol micromolecular chain extender, 68%-72% of N-N dimethylformamide, 0.5%-1.5% of a wet film-forming aid and 0.5%-1.5% of a foam regulator. The polyether polyol and the polyester polyol are copolymerized, the polyester polyol is used for solving the problem of insufficient strength of the polyether polyol, hydrolysis resistance of the whole resin is not affected by a small amount of the polyester polyol, and the resin has the advantages of being moderate in solidification rate, high in washing speed, soft in hand feeling, high in stripping and resistant to hydrolysis for 24 hours, and can be widely applied to the fields of shoe leather, clothes and the like.

Description

technical field [0001] The invention belongs to the field of resin materials, and in particular relates to a soft high-stripping hydrolysis-resistant wet-process leather resin and a preparation method thereof. Background technique [0002] Leather resin is the main raw material for preparing PU synthetic leather. PU synthetic leather is widely used in civilian fields, such as bags, shoe leather, clothing, sofas, etc. With the improvement of people's living standards, high-quality PU leather has been vigorously developed, especially hydrolysis-resistant PU leather has been widely used. Although ordinary polyester PU leather has good peel strength, it generally does not have hydrolysis resistance, which limits its application in some fields. Although polyether type PU leather has good hydrolysis resistance, its peel strength is generally not enough, especially the soft-feeling type. Therefore, in order to solve these technical problems and solve the demand problem of the mark...

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): C08L75/04C08L71/00C08L83/12C08G18/66C08G18/48C08G18/42C08J9/00D06N3/14
Inventor 林杰夏锋熊治海
Owner 浙江旭川树脂有限公司
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