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A cationic light-curing coating for transfer film

A technology of light-curing coatings and cations, applied in coatings and other directions, can solve the problems of poor scratch resistance and wear resistance of coatings, no protective effect, unclear transfer patterns, etc., to improve hardness, wear resistance, and fullness Good, strong aesthetic effect

Active Publication Date: 2017-08-08
GUANGDONG HEYGEY LIGHT CURING MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the transfer process, usually due to the poor adhesion between the protective coating layer and the printing ink, the transfer pattern is not clear and the edges peel off; the coating has poor scratch resistance and wear resistance, and has no protective effect; ordinary thermosetting coatings are used A large amount of volatile solvents are produced during the process, which is harmful to the environment

Method used

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  • A cationic light-curing coating for transfer film
  • A cationic light-curing coating for transfer film
  • A cationic light-curing coating for transfer film

Examples

Experimental program
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preparation example Construction

[0021] The preparation method of the heat-curable acrylate used in the present invention can be:

[0022] 1. The hydroxy acrylate is reacted with one isocyanate of the polyisocyanate, the molar ratio of the hydroxy acrylate to the polyisocyanate is 1:1, and dibutyl tin dilaurate (DBTDL) accounting for 0.05% of the polyisocyanate mass is added as a catalyst, React for 10 hours under anhydrous conditions, the reaction temperature is 40℃; the infrared spectrum of hydroxy acrylate is 3300cm -1 The characteristic absorption peak of the hydroxyl group at the position disappears; then the reaction is completed, and the heat-curable acrylate is obtained, ready for use;

[0023] 2. At room temperature, weigh the epoxy resin, heat-curable acrylate, cationic photoinitiator, free radical photoinitiator and auxiliary agent according to the proportions, and mix them evenly to obtain the cation for the transfer film Light-curing paint, ready for use;

[0024] The epoxy resin is bisphenol A epoxy r...

specific Embodiment 1-10

[0031] Specific examples 1-10 are shown in Table 1 and Table 2:

[0032] Table 1

[0033]

[0034] Table 2

[0035]

[0036] See Table 3 for Comparative Examples 1-3:

[0037] table 3

[0038]

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PUM

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Abstract

The invention belongs to the field of coatings and particularly relates to a cationic photocurable coating for a transfer film. The coating is prepared from the following components in percentage by mass: 35-70% of epoxy resin, 25-60% of thermocurable acrylate, 1-5% of a cationic photoinitiator, 2-4% of a free radical photoinitiator and 0.1-0.2% of auxiliaries. The cationic photocurable coating for the transfer film provided by the invention is high in curing speed. After ultraviolet irradiation, double bonds in thermocurable acrylate are quickly cured and the viscosity of the coating is increased, and meanwhile, the cationic initiator initiates the epoxy resin for cationic polymerization. After evacuation of ultraviolet, the coating can be further cured so as to accomplish deep curing. In the process, the ring opening effect of the epoxy resin compensates the volume shrinkage generated in the acrylate polymerization process, so that the volume shrinkage of the system is greatly reduced.

Description

Technical field [0001] The invention belongs to the field of coatings, and particularly relates to a cationic photocurable coating for transfer film. Background technique [0002] As a new type of printing process, thermal transfer printing is widely used in various fields because of its bright colors and clear patterns. Thermal transfer is mainly realized by transfer film. The main preparation process is to sequentially apply release agent, transparent paint, printing ink, colored primer, hot melt, etc. on the film, among which the printing ink and protective coating layer on the transfer film It is an important factor affecting the transfer effect. [0003] During the transfer process, usually due to the poor adhesion between the protective coating layer and the printing ink, the transfer pattern is not clear and the edges peel off; the coating has poor scratch and wear resistance and does not have a protective effect; ordinary thermosetting coatings are in use A large amount o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D4/02C09D4/06C09D7/12
Inventor 彭健华吴勇蒋卫华
Owner GUANGDONG HEYGEY LIGHT CURING MATERIALS