Sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin

A technology of sulfur benzophenone polyurethane and epoxy acrylate, which is applied in the field of modified self-initiating photocuring resin, sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiating UV resin and its preparation, can solve the problem of Produces irritating odor of toxic substances, easy yellowing of cured coating, easy migration to the surface and other problems, and achieves the effects of high self-initiation efficiency, improved storage stability, and excellent adhesion

Inactive Publication Date: 2021-11-26
金色摇篮新材料股份公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it still has disadvantages such as slow curing rate, easy yellowing of the cured coating, easy migration to the surface, strong volatility, large heat loss, production of toxic substances and strong pungent odor during use.

Method used

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  • Sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin
  • Sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin
  • Sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] A kind of sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiated UV resin A1, and its preparation steps are as follows:

[0048] a) Preparation of epoxy acrylate E44A: Add 230.0 parts of bisphenol A epoxy resin E-44 into a four-necked flask equipped with a reflux condenser, a thermometer, a dropping funnel and a stirrer, and wait until the temperature rises to 80°C Slowly add dropwise a mixture of 72.0 parts of acrylic acid, 7.5 parts of N,N-dimethylaniline and 0.9 parts of p-hydroxyanisole, after the addition is complete, slowly raise the temperature to 85-90°C, keep the temperature for 3 hours, and then take samples every 40 minutes Detect the acid value of the system, stop the reaction when the detected acid value is lower than 4.6mgKOH / g, and prepare epoxy acrylate E44A;

[0049] b), preparation of isocyanate-acrylic acid functional monomer TDI-HEMA: add 87.0 parts of TDI-80 and 0.06 part of DBTDL in a four-necked flask equipped with a re...

Embodiment 2

[0056] A kind of sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiated UV resin A2, and its preparation steps are as follows:

[0057] a) Preparation of epoxy acrylate E51A: Add 78.4 parts of bisphenol A epoxy resin E-51 into a four-necked flask equipped with a reflux condenser, thermometer, dropping funnel and stirrer, and wait until the temperature rises to 80°C Slowly add dropwise a mixture of 34.4 parts of methacrylic acid, 2.8 parts of catalyst (the mass ratio of N,N-dimethylaniline to tetrabutylammonium bromide is 1:1) and 0.34 parts of p-hydroxyanisole, dropwise After completion, slowly raise the temperature to 85-90°C, keep it warm for 3 hours, then take samples every 30 minutes to detect the acid value of the system, stop the reaction when the detected acid value is lower than 5mgKOH / g, and prepare epoxy acrylate E51A;

[0058]b) Preparation of isocyanate-acrylic acid functional monomer IPDI-HEA: Add 44.5 parts of IPDI and 0.03 parts of DB...

Embodiment 3

[0065] A kind of sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiated UV resin A3, and its preparation steps are as follows:

[0066] a) Preparation of epoxy acrylate E51A: Add 78.4 parts of bisphenol A epoxy resin E-51 into a four-necked flask equipped with a reflux condenser, thermometer, dropping funnel and stirrer, and wait until the temperature rises to 80°C Slowly add dropwise a mixture of 34.4 parts of methacrylic acid, 2.8 parts of catalyst (the mass ratio of N,N-dimethylaniline to tetrabutylammonium bromide is 1:1) and 0.34 parts of p-hydroxyanisole, dropwise After completion, slowly raise the temperature to 85-90°C, keep it warm for 3 hours, then take samples every 30 minutes to detect the acid value of the system, stop the reaction when the detected acid value is lower than 5mgKOH / g, and prepare epoxy acrylate E51A;

[0067] b) Preparation of isocyanate-acrylic acid functional monomer HDI-HEA: Add 33.6 parts of HDI and 0.02 parts of DBT...

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Abstract

The invention relates to a sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin and a preparation method thereof. The sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiation UV resin contains three functional active groups and a sulfur-containing benzophenone photo-initiation group, the UV resin has a hyperbranched structure, the viscosity can be effectively reduced, and the storage stability can be improved; the self-initiation efficiency is high, and the defects of slow curing rate, easy yellowing of a coating, surface migration, strong volatility, large heat loss, generation of harmful substances and strong pungent smell and the like of an additional BP initiator are overcome; the sulfur-containing benzophenone self-initiation UV resin prepared by the invention has excellent adhesive force, water resistance, aging resistance, chemical resistance, pollution resistance and odorless coating, also has high gloss, high wear resistance, high tensile strength and extremely good flexibility, and is widely applied to UV floor coatings, UV wood coatings, UV alloy coatings, UV circuit board ink, UV plastic coatings and the like.

Description

technical field [0001] The invention relates to a modified self-initiating photocuring resin, in particular to a sulfur-containing benzophenone polyurethane modified epoxy acrylate self-initiating UV resin and a preparation method thereof, belonging to the technical field of synthetic resins. Background technique [0002] In recent years, environmentally friendly coatings, including high-solids and solvent-free coatings, water-based coatings, powder coatings and light-curing coatings, have achieved rapid development. UV curing has the advantages of fast response, room temperature operation, low energy consumption, no solvent and less pollution. Light curing technology has been widely used in printing, packaging, advertising, building materials, decoration, electronics, communications, computers, home furnishings, etc. Shops, automobiles, aviation, aerospace, instrumentation, sports, health and many other industries. [0003] Epoxy resin is widely used due to its excellent ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/12C08G18/67C08G18/32C08G18/38C09D175/14C09D11/101C09D11/102
CPCC08G18/12C08G18/6705C08G18/672C08G18/3215C09D175/14C09D11/101C09D11/102C08G2150/00C08G18/288
Inventor 许钧强王茵键
Owner 金色摇篮新材料股份公司
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