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

Two-component waterborne polyurethane adhesive and preparation method thereof

A water-based polyurethane and adhesive technology, applied in polyurea/polyurethane adhesives, adhesive types, adhesives, etc., can solve the mechanical properties of water-based polyurethane, poor water resistance, and difficulty in meeting the application requirements of shoe adhesives, etc. problem, to achieve the effect of high peel strength, good bonding ability and good hydrolysis resistance

Pending Publication Date: 2021-10-01
安徽大松树脂有限公司
View PDF1 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the mechanical properties and water resistance of water-based polyurethane are not good, so it is difficult to meet the application requirements of shoe adhesives in high-humidity environments

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

[0019] A two-component water-based polyurethane adhesive proposed by the present invention includes A component and B component;

[0020] Among them, component A is made of the following raw materials in parts by weight: 15 parts of castor oil, 15 parts of polycarbonate diol, 100 parts of polyadipate-1,4-butylene glycol PBA1000, 100 parts of N-(2 6 parts of sodium salt of -aminoethyl)-2-aminoethanesulfonic acid, 8 parts of trimethylolpropane, 12 parts of isophorone diisocyanate, 18 parts of toluene diisocyanate, 0.05 parts of dibutyltin dilaurate, ethyl 2.5 parts of diamine;

[0021] The preparation of component A is as follows: castor oil, polycarbonate diol, polyadipate-1,4-butylene glycol ester diol, N-(2-aminoethyl)-2-aminoethanesulfonic acid Add sodium salt and trimethylolpropane into the reaction vessel, raise the temperature to 80°C, stir for 30min, then add isophorone diisocyanate, toluene diisocyanate and dibutyltin dilaurate, cool down to 70°C, stir for 4h, During ...

Embodiment 2

[0025] A two-component water-based polyurethane adhesive proposed by the present invention includes A component and B component;

[0026] Among them, component A is made of the following raw materials in parts by weight: 17 parts of castor oil, 15 parts of polycarbonate diol, 95 parts of polyadipate-1,4-butylene glycol PBA1000, 95 parts of N-(2 -7 parts of sodium salt of -aminoethyl)-2-aminoethanesulfonic acid, 6 parts of trimethylolpropane, 12 parts of isophorone diisocyanate, 15 parts of toluene diisocyanate, 0.05 parts of dibutyltin dilaurate, ethyl 3 parts of diamine;

[0027] The preparation of component A is as follows: castor oil, polycarbonate diol, polyadipate-1,4-butylene glycol ester diol, N-(2-aminoethyl)-2-aminoethanesulfonic acid Add sodium salt and trimethylolpropane into the reaction vessel, raise the temperature to 85°C, stir for 30 minutes, then add isophorone diisocyanate, toluene diisocyanate and dibutyltin dilaurate, cool down to 75°C, and stir for 4 hour...

Embodiment 3

[0031] A two-component water-based polyurethane adhesive proposed by the present invention includes A component and B component;

[0032] Among them, component A is made of the following raw materials in parts by weight: 18 parts of castor oil, 18 parts of polycarbonate diol, 90 parts of polyadipate-1,4-butylene glycol PBA1000, 90 parts of N-(2 -Aminoethyl)-2-aminoethanesulfonic acid sodium salt 8 parts, trimethylolpropane 5 parts, isophorone diisocyanate 12 parts, toluene diisocyanate 12 parts, dibutyltin dilaurate 0.05 parts, ethyl 3.5 parts of diamine;

[0033] The preparation of component A is as follows: castor oil, polycarbonate diol, polyadipate-1,4-butylene glycol ester diol, N-(2-aminoethyl)-2-aminoethanesulfonic acid Add sodium salt and trimethylolpropane into the reaction vessel, raise the temperature to 85°C, stir for 35 minutes, then add isophorone diisocyanate, toluene diisocyanate and dibutyltin dilaurate, cool down to 75°C, and stir for 4.5 hours During the r...

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 discloses a two-component waterborne polyurethane adhesive and a preparation method thereof, and relates to the technical field of adhesives. The two-component waterborne polyurethane adhesive comprises a component A and a component B; the component A is prepared from, by weight, 15 to 20 parts of castor oil, 15 to 20 parts of polycarbonate diol, 80 to 100 parts of poly(1, 4-butylene adipate) glycol, 6 to 10 parts of sodium N-(2-aminoethyl)-2-aminoethanesulfonate, 3 to 8 parts of trimethylolpropane, 20 to 30 parts of diisocyanate, 0.02 to 0.05 part of dibutyltin dilaurate and 2.5 to 4 parts of ethylenediamine; and the component B is a hexamethylene diisocyanate tripolymer. The preparation process is simple, and the prepared adhesive is excellent in comprehensive performance, good in hydrolysis resistance, high in peel strength and good in storage stability, has good bonding capacity for various shoe materials such as rubber shoes, sports shoes and leather shoes, and can meet the application requirements of the water-resistant adhesive for shoes in a high-humidity environment.

Description

technical field [0001] The invention relates to the technical field of adhesives, in particular to a two-component water-based polyurethane adhesive and a preparation method thereof. Background technique [0002] Water-based polyurethane adhesive refers to the adhesive formed by dissolving or dispersing polyurethane in water. Compared with solvent-based adhesives, it has the advantages of no solvent, no pollution, good film-forming properties, and strong adhesion. With the strengthening of people's safety and environmental awareness, the research on water-based polyurethane adhesives has developed rapidly. Due to its excellent adhesion, wear resistance, good elasticity and processability, it is widely used in the shoe industry and other industrial fields. However, the mechanical properties and water resistance of water-based polyurethane are not good, so it is difficult to meet the application requirements of shoe adhesives in high-humidity environments. Contents of the i...

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): C09J175/14C08G18/76C08G18/75C08G18/66C08G18/44C08G18/42C08G18/36C08G18/32C08G18/38C08G18/12
CPCC09J175/14C08G18/724C08G18/7614C08G18/755C08G18/6662C08G18/6644C08G18/44C08G18/4238C08G18/36C08G18/3206C08G18/3855C08G18/12C08G18/3228
Inventor 朱立芳
Owner 安徽大松树脂有限公司
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