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

Ultraviolet ray and moisture dual-cured modified polyurethane and preparation method thereof

A dual-curing, ultraviolet technology, applied in polyurea/polyurethane coatings, polyurea/polyurethane adhesives, adhesive types, etc., can solve the problems of cured object shape, thickness, color restrictions, shadow curing and other difficult problems. Achieve the effect of solving the problem of curing depth, reducing curing energy and improving weather resistance

Inactive Publication Date: 2015-04-29
TONSAN ADHESIVES INC
View PDF3 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are also deficiencies in the light curing system. There are certain restrictions on the shape, thickness, and color of the cured object, such as: curing depth, and the curing of the shadow part is difficult to solve

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
  • Ultraviolet ray and moisture dual-cured modified polyurethane and preparation method thereof
  • Ultraviolet ray and moisture dual-cured modified polyurethane and preparation method thereof
  • Ultraviolet ray and moisture dual-cured modified polyurethane and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Embodiment 1 modified polyurethane (I1) is synthesized

[0033] Step 1: Add 1,4-butanediol diglycidyl ether and methacrylic acid to a 2L reactor equipped with a stirrer, thermometer and condenser, then heat to 120°C, react for 3 hours, and cool to room temperature , to obtain the chain extender epoxy acrylate, the second step polypropylene glycol and isophorone diisocyanate into the reactor, then add the catalyst diisobutyltin laurate, the mol ratio of hydroxyl and isocyanate group is 1: (1.1 ~1.3), under nitrogen protection, react at 60-80°C for 4-6h to obtain NCO-terminated polyurethane prepolymer, then add the chain extender epoxy acrylate into the reaction kettle, under nitrogen protection, 60-80°C, continue the reaction for 4 -6h to obtain the synthesis of a polyurethane prepolymer containing NCO groups, then cool the temperature to 40°C, add aminopropyltrimethoxysilane, and react for 2h to obtain a modified polyurethane (I1).

[0034]

Embodiment 2

[0035] Embodiment 2 modified polyurethane (I2) is synthesized

[0036] Step 1: Add bisphenol A diglycidyl ether and methacrylic acid to a 2L reactor equipped with a stirrer, a thermometer and a condenser, then heat to 120°C, react for 3 hours, and cool to room temperature to obtain chain extension In the second step, polycarbonate diol and isophorone diisocyanate are put into the reaction kettle, and then the catalyst diisobutyltin dilaurate is added, and the molar ratio of hydroxyl group to isocyanate group is 1: (1.1~1.3 ), under nitrogen protection, react at 60-80°C for 4-6h to obtain NCO-terminated polyurethane prepolymer, then add the chain extender epoxy acrylate into the reaction kettle, under nitrogen protection, at 60-80°C, continue to react for 4-6h , to obtain the synthesis of a polyurethane prepolymer containing NCO groups, then cool the temperature to 40°C, add aminopropyltrimethoxysilane, and react for 2h to obtain a modified polyurethane (I2).

[0037]

Embodiment 3

[0039] According to parts by weight, mix 76.63 parts of modified polyurethane (I1) and 6.39 parts of methyltrimethoxysilane at room temperature and under vacuum for 20 to 30 minutes; then add 3.83 parts of 1-hydroxycyclohexyl phenyl ketone, acrylic acid monomer 12.77 parts, 0.38 parts of isopropyl orthotitanate, mixed at room temperature and protected from light for 20 to 30 minutes to make it uniform, and made a UV and moisture dual curing composition.

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 ultraviolet ray and moisture dual-cured modified polyurethane and a preparation method thereof, belonging to the technical field of high polymer materials. The structural formula of the modified polyurethane is represented by the general formula I in the specification. The ultraviolet ray and moisture dual-cured modified polyurethane disclosed by the invention has dual curing manners; the disadvantages of the single light curing manner are overcome; simultaneously, because designed resin molecules contain double-bond groups, the curing energy can be reduced; the crosslinking density is increased; the curing depth problem is solved; the weather fastness of the resin is increased; and the temperature-resistant property of the resin is improved.

Description

technical field [0001] The invention belongs to the technical field of macromolecular materials, and in particular relates to a modified polyurethane with dual curing of ultraviolet rays and moisture and a preparation method thereof. Background technique [0002] Light curing (UV) technology has the advantages of fast curing, low energy consumption, high efficiency, no pollution, energy saving and environmental protection, and is an environmentally friendly green technology. However, there are also shortcomings in the light-curing system. There are certain restrictions on the shape, thickness, and color of the cured object, such as: curing depth, and the curing of the shadow part is difficult to solve. Ultraviolet (UV)-moisture dual curing system uses UV light to quickly cure, and in the shadow part is cured by moisture crosslinking to solve the defects of single light curing method. [0003] Epoxy-modified acrylate has both the properties of epoxy resin and acrylate, and h...

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): C08G18/67C08G18/66C08G18/48C08G18/44C08G18/38C08G18/10C08L75/14C09D175/14C09J175/14
CPCC08G18/10C08G18/4825C08G18/672C08G18/755C08G18/837C08K5/10C08K5/5419C08K5/5425C08K2201/014C08L75/14C08L2205/025C09J11/06C09J175/14C08G18/48C08G18/44
Inventor 刘信庆李海宾李守平史伟同
Owner TONSAN ADHESIVES INC
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