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

A kind of wet type high peeling polyurethane resin and preparation method thereof

A polyurethane resin and high-stripping technology, applied in the field of polyurethane synthetic leather, can solve the problems of poor washing, slow vehicle speed, and high residual DMF on the leather surface, and achieve the effects of reducing energy consumption, improving regularity and cohesion, and improving regularity

Active Publication Date: 2016-03-30
HEFEI ANLI POLYURETHANE NEW MATERIAL
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of slow vehicle speed, poor washing and high residual DMF on the leather surface in the preparation process of wet high-peeling polyurethane synthetic leather, the present invention provides a wet high-peeling polyurethane resin with excellent water washing and good processability and its preparation method

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
  • A kind of wet type high peeling polyurethane resin and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0050] (1) Add 400g of polyol compound PET-2 and 3g of antioxidant I-1010 into 1000g of solvent DMF;

[0051] (2) Stir the solution in (1) evenly, add 66g of diisocyanate, and react at 75°C for 2h in the presence of 0.8g of catalyst organic bismuth Mb20;

[0052] (3) Add 10g of ethylene glycol and 20g of MDA to (2), stir and react at 85°C for 0.5h; then add 400g of polyol compound PET-3, stir evenly, add 40g of diisocyanate, and carry out prepolymerization at 75°C Reaction 3h obtains prepolymer;

[0053] (4) Add 1400g of solvent DMF, 114g of ethylene glycol, and 460g of diisocyanate to the prepolymer. After stirring evenly, continue the reaction at 75°C for 5h; after the reaction is completed, add reaction terminator methanol to control its viscosity at 210Pas / 25 ℃ to obtain polyurethane resin.

Embodiment 2

[0055] (1) Add 400g of polyol compound PET-3 and 2g of antioxidant 2246 into 1000g of solvent DMAC;

[0056](2) Stir the solution in (1) evenly, add 100g of diisocyanate, and react at 80°C for 1.5h in the presence of 4g of catalyst organic bismuth Mb20;

[0057] (3) Add 12g of 1,4-butanediol and 18g of MDA to (2), stir and react at 80°C for 0.7h; then add 400g of polyol compound PET-2, stir evenly, add 50g of diisocyanate, The prepolymerization reaction was carried out at ℃ for 2.5h to obtain the prepolymer;

[0058] (4) Add 1400g of solvent DMF, 120g of 1,4-butanediol, and 500g of diisocyanate to the prepolymer. After stirring evenly, continue to react at 80°C for 4 hours; Control at 200Pas / 25°C to obtain polyurethane resin.

Embodiment 3

[0060] (1) Add 400g of polyol compound PET-2, 1g of antioxidant I-1010, and 2g of antioxidant 2246 into 1000g of solvent DMAC;

[0061] (2) Stir the solution in (1) evenly, add 135g of diisocyanate, and react at 75-85°C for 1-2h in the presence of 1.6g of catalyst organic bismuth Mb20;

[0062] (3) Add 15g of ethylene glycol and 24g of MOCA to (2), stir and react at 75°C for 0.9h; then add 400g of polyol compound PET-2, stir evenly, add 70g of diisocyanate, and carry out prepolymerization at 85°C Reaction 2h obtains prepolymer;

[0063] (4) Add 1400g of solvent DMF, 110g of ethylene glycol, and 440g of diisocyanate to the prepolymer. After stirring evenly, continue to react at 85°C for 3h; after the reaction is completed, add reaction terminator methanol to control its viscosity at 160Pas / 25 ℃ to obtain polyurethane resin.

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

PropertyMeasurementUnit
solid contentaaaaaaaaaa
Login to View More

Abstract

The invention relates to a wet-type high-peeling polyurethane resin and a preparation method thereof. The wet-type high-peeling polyurethane resin is composed of diisocyanate, polyol compound, small molecule diol chain extender, small molecule diamine chain extender, catalyst, anti- Oxygen and solvent preparation. The prepolymerization process is used to improve the phase separation degree of the soft and hard segments of polyurethane resin, and at the same time, the small molecule diol chain extender and the small molecule diamine chain extender are blocked into the polyester molecule through process control during the prepolymerization process In the chain, the regularity and cohesion of the soft segment are improved, the coagulation speed of the resin can be significantly increased during the leather-making process, the speed of the machine can be significantly increased when producing high-peeling crust leather, and the DMF residue on the surface of solvent-based synthetic leather can be effectively reduced. To reduce energy consumption and protect the environment.

Description

technical field [0001] The invention relates to the technical field of polyurethane synthetic leather, in particular to a wet-type high-peeling polyurethane resin and a preparation method thereof. Background technique [0002] Wet-process polyurethane synthetic leather is the best substitute product for the new generation of natural leather. It has excellent properties, such as good air permeability, moisture permeability, smooth and plump feel and excellent mechanical strength, especially from the structure similar to natural leather. , so its products are widely used in clothing, shoes, bags, car cushions, sofas and other fields. [0003] Among them, high-stripping polyurethane synthetic leather is very popular in the sports shoe market, and has gradually replaced genuine leather to process sports shoes. However, the high-peeling polyurethane synthetic leather used for sports shoes, due to the lack of fillers in its formulation system, results in slow wet-leathering speed...

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 Patents(China)
IPC IPC(8): C08G18/76C08G18/42C08G18/32C08K5/134C08K5/526C08L75/06
CPCC08G18/12C08G18/227C08G18/664C08G18/6651C08G18/3206
Inventor 尹凯凯惠坚强武春余张彪
Owner HEFEI ANLI POLYURETHANE NEW MATERIAL
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