Supercharge Your Innovation With Domain-Expert AI Agents!

A kind of preparation method of waterborne polyurethane with good freeze-thaw stability

A water-based polyurethane, freeze-thaw stability technology, applied in the field of preparation of water-based polyurethane, can solve the problems of water-based polyurethane resin, such as low strength, insufficient viscosity and wear resistance, application limitations, etc., to improve adhesion and performance Superior, good wear resistance effect

Active Publication Date: 2016-05-25
JIANGSU HUAXIA PAINT MAKING
View PDF7 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, at this stage, the strength of water-based polyurethane resin is not high, the viscosity and wear resistance are not good enough, and the freeze-thaw resistance is also poor, so its application is also limited.

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 preparation method of waterborne polyurethane with good freeze-thaw stability
  • A kind of preparation method of waterborne polyurethane with good freeze-thaw stability
  • A kind of preparation method of waterborne polyurethane with good freeze-thaw stability

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Add 88.00 g of amino cage silsesquioxane T8 to 174.00 g of toluene diisocyanate in acetone (750.00 g) at 70° C., and react until clear.

[0036] (2) Add 75.00g of 2,2-dimethylol butoxyethylene glycol (20EO, see structural formula (II), wherein n=20) methyl ether (ethoxyl terminated polymer diol) , 200.00g of polyglycol 1000, 4.60g of glycerin and 2.71g of catalyst di-n-butyltin dilaurate were reacted at 60°C for 2h; then the temperature was raised to 85°C for 2h and then lowered to room temperature.

[0037] (3) Add 300 g of deionized water to the mixture cooled to room temperature and disperse at 25°C.

[0038] (4) After dispersion, 29.81 g of ethylenediamine was added at 40° C. for chain extension reaction for 3 hours, and then cooled to room temperature to obtain waterborne polyurethane with good freeze-thaw stability. Its solid content is determined to be 33.35%, and its particle size is 323.6nm.

[0039] The reaction conditions and parameters of each step of ...

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
particle diameteraaaaaaaaaa
wear resistanceaaaaaaaaaa
wear resistanceaaaaaaaaaa
Login to View More

Abstract

The invention discloses a preparation method of waterborne polyurethane with excellent freeze-thawing stability. The preparation method specifically comprises the steps of: at 20-80 DEG C, adding amino type polyhedral oligomeric silsesquioxane into acetone of excessive isocyanate monomer, reacting to be clear, setting the temperature to be 60 DEG C, adding ethyoxyl-terminated polymer glycol, diol and polyol, and catalyst di-n-butyl tin dilaurate, reacting for one to two hours, and controlling the R value to be 1.50-3.00 in the prepolymerization reaction; then increasing the temperature to be 70-90 DEG C, continuously reacting for one to two hours, then cooling to room temperature, adding water for dispersion, adding a chain extender at 30-50 DEG C to conduct chain extension reaction for two to four hours, and cooling to room temperature to obtain waterborne polyurethane. Through tests, the waterborne polyurethane has favorable wear resistance property and bonding strength, as well as excellent freeze-thawing stability.

Description

technical field [0001] The invention belongs to the field of polymer materials, and in particular relates to a preparation method of water-based polyurethane with good freeze-thaw stability. Background technique [0002] Waterborne polyurethane is a new type of polymer material based on polyurethane resin and water instead of organic solvent as the dispersion medium. It not only retains some excellent properties of traditional solvent-based polyurethane, but also has the advantages of non-toxic, non-flammable, non-polluting and energy-saving, and has attracted people's attention. As a new type of green environmental protection material, it is widely used in the fields of textile, printing and dyeing, leather processing, wood processing and construction. [0003] Water-based polyurethane combines the advantages of polyurethane with the low volatile organic compound (VOC) content of water-based itself, which meets the "three prerequisites" (resources, energy, and pollution-fr...

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): C08G18/67C08G18/66C08G18/48C08G18/42C08G18/62C08G18/44C08G18/32C08G18/12
Inventor 程齐利
Owner JIANGSU HUAXIA PAINT MAKING
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com