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Interpenetrating network based sulfydryl modified acrylate prepolymer UV ink and preparation method thereof

An interpenetrating network structure and acrylate technology, applied in the field of printing ink, can solve the problems of UV film yellowing, incomplete curing of UV ink, poor adhesion, etc., and achieve fast curing speed, good three-dimensional structure and good weather resistance. Effect

Active Publication Date: 2017-12-01
力嘉包装(东莞)有限公司 +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the problems that the existing UV ink will cause yellowing on the surface of the UV adhesive film due to the degradation of the photoinitiator, and the UV ink is prone to problems such as incomplete curing and poor adhesion, and provides a non-photoinitiator-free, weather-resistant Mercapto-modified acrylate prepolymer UV ink based on interpenetrating network structure, good durability, good temperature resistance, hardening and wear resistance, and fast curing speed, and the preparation method of this kind of UV ink

Method used

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  • Interpenetrating network based sulfydryl modified acrylate prepolymer UV ink and preparation method thereof
  • Interpenetrating network based sulfydryl modified acrylate prepolymer UV ink and preparation method thereof
  • Interpenetrating network based sulfydryl modified acrylate prepolymer UV ink and preparation method thereof

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Embodiment 1

[0047] This embodiment provides a method for preparing a mercapto-modified acrylate prepolymer UV ink based on an interpenetrating network structure. The specific preparation steps are as follows:

[0048] (1) Put 195.4g of dichloromethane, 250.4g of 4,4'-dimercaptophenylene sulfide, N,N-diethyl Ethylamine 29.32g, then slowly add 1025.2g of bisphenol A glycerol dimethacrylate dropwise at room temperature, dropwise within 1 hour, raise the temperature of the system to 80°C while stirring, after 2 hours of reaction, when Detected in the FTIR spectrum—SH peak (2590cm －1 ) disappears, stop heating, and when the temperature drops to 60°C, slowly drop in 679.2g of toluene diisocyanate (TDI), 15.6g of hydroquinone, and test the content of NCO in the reaction system with a spectrophotometer after reacting for 3.5h. When the content is less than 0.4%, stop heating, stir and cool to room temperature, and vacuum remove the solvent, polymerization inhibitor and catalyst to obtain a color...

Embodiment 2

[0051] This embodiment provides a method for preparing a mercapto-modified acrylate prepolymer UV ink based on an interpenetrating network structure. The specific preparation steps are as follows:

[0052] (1) Put 204g of 1,1-dichloroethane, 250.4g of 4,4'-dimercaptophenylsulfide, N,N - 16.32g of diethylethylamine, 8.16g of dibutyltin dilaurate, then slowly add 1076.4g of bisphenol A glycerol dimethacrylate dropwise at room temperature, finish adding dropwise within 1 hour, and make the system After the temperature was raised to 80°C for 3 hours, when the -SH peak (2590cm －1 ) disappears, stop heating, and when the temperature drops to 70°C, slowly drop in toluene diisocyanate (TDI) 714g, 2,5-di-tert-butylhydroquinone 4.08g, 4-methoxyphenol 8.16g, react for 4h Finally, use a spectrophotometer to test the NCO content in the reaction system. When the NCO content is less than 0.4%, stop heating, stir and cool to room temperature, and vacuum remove the solvent, polymerization inh...

Embodiment 3

[0056] This embodiment provides a method for preparing a mercapto-modified acrylate prepolymer UV ink based on an interpenetrating network structure. The specific preparation steps are as follows:

[0057] (1) Put 120.3g of dichloromethane, 40g of hexane, 250.4g of 4,4'-dimercaptophenylsulfide, N,N - 12.03g of diethylethylamine, 8.02g of benzyltriethylammonium chloride, then slowly add 1050.8g of bisphenol A glycerol dimethacrylate dropwise at room temperature, finish dropping within 1 hour, and stir At the same time, the temperature of the system was raised to 80°C and reacted for 3 hours, when the —SH peak (2590cm －1 ) disappears, stop heating, and when the temperature drops to 70°C, slowly drop in 705.3g of toluene diisocyanate (TDI), 12.03g of 6-tert-butyl-2,4-dimethylphenol, and test it with a spectrophotometer after 4 hours of reaction The content of NCO in the reaction system, when the content of NCO is less than 0.4%, stop heating, stir and cool to room temperature, r...

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Abstract

The invention relates to the technical field of printing ink, in particular to an interpenetrating network based sulfydryl modified acrylate prepolymer UV ink and a preparation method thereof. The UV ink which is out of oxygen inhibition and has no need for being added with photoinitiators is a self-photoinitiating system, capable of effectively overcoming yellow-stain on the outer surface of the UV coating caused by degradation of the photoinitiators, capable of achieving the purpose of saving energy and environmental protection due to absences of the photoinitiators, has the advantages of good environmental friendliness, good energy conservation, high curing speed, good weather resistance good scrape resistance, and meets requirements of multiple printing ways and productions.

Description

technical field [0001] The invention relates to the technical field of printing inks, in particular to a mercapto-modified acrylate prepolymer UV ink based on an interpenetrating network structure, and a preparation method of the UV ink. Background technique [0002] In recent years, UV technology has made great progress in the printing industry. The fields where UV printing inks currently dominate applications include signage printing, container printing, and packaging cardboard printing. The advantages are obvious: short drying times, good gloss and a wide range of printability. [0003] UV printing ink is mainly composed of prepolymers, reactive diluents, photosensitizers, pigment fillers and various additives. Among them, prepolymers are the binder and main film-forming material of UV printing inks, as well as workability and quality suitability. Such as the transferability of the ink on the printing machine, the curing speed of the printing film, the reproducibility o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D11/101C08G18/76C08G18/67
CPCC08G18/677C08G18/7614C09D11/101
Inventor 段华伟马楚力宋孝飞高文超马松绵马伟武马楚邦马家慧
Owner 力嘉包装(东莞)有限公司
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