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Cover plate ink based on cationic photoinitiator and preparation method thereof

A cationic photo-initiation and photo-initiator technology, which is applied in inks, household utensils, applications, etc., can solve the problems that the polymerization reaction cannot continue, the inner layer ink is difficult to completely cure, and cannot generate enough free radicals, so as to improve the brittleness problem , fast curing speed, and the effect of improving reactivity

Active Publication Date: 2021-05-11
厦门三德信科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(2) Free radicals and free radicals will undergo free radical termination reactions during the collision process, making the polymerization reaction unable to continue
If the UV-type black cover ink is used, because the black powder in the ink can absorb UV light, the initiator in the inner ink can obtain very little UV energy, and cannot generate enough free radicals, making it difficult to completely cure the inner ink. This phenomenon is aggravated as the proportion of black toner increases

Method used

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  • Cover plate ink based on cationic photoinitiator and preparation method thereof
  • Cover plate ink based on cationic photoinitiator and preparation method thereof
  • Cover plate ink based on cationic photoinitiator and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0034] The ink composition raw material of the present embodiment is as follows (below all are mass percent):

[0035] Diglycidyl tetrahydrophthalate 30% (liquid epoxy resin), bis((3,4-epoxycyclohexyl)methyl) adipate 25% (liquid epoxy resin), diethyl ether Glycol divinyl ether 12% (reactive diluent), N-butyl glycidyl ether 10% (reactive diluent), 4-(phenylmercapto)phenyldiphenylthione hexafluorophosphate 3% (cation Photoinitiator), Mitsubishi carbon black MA-100R7% (black pigment), silica matting powder 5%, Lubo-20000 5% (dispersant), fumed silica (thixotropic agent) 2%, BYK- 066N (defoamer) 0.5%, BYK-354 (leveling agent) 0.5%.

[0036] The preparation method of above-mentioned printing ink is as follows:

[0037] (1) Put Mitsubishi carbon black into a high-speed stirred tank at 80°C, with a stirring speed of 400rpm, and take it out after stirring for 10 hours, so as to achieve relative insulating surface modification.

[0038] (2) Add at least two liquid epoxy resins into ...

Embodiment 2

[0052] The ink composition raw material of the present embodiment is as follows (below all are mass percent):

[0053] Diglycidyl tetrahydrophthalate 28% (liquid epoxy resin), bis((3,4-epoxycyclohexyl)methyl) adipate 28% (liquid epoxy resin), diethyl ether Glycol divinyl ether 14% (reactive diluent), N-butyl glycidyl ether 10% (reactive diluent), 4-(phenylmercapto) phenyl diphenylsulfonium hexafluorophosphate 4% (cation Photoinitiator), Mitsubishi carbon black MA-100R7% (black pigment), silica matting powder 3%, Lubo-20000 4%, fumed silica (thixotropic agent) 1%, BYK-066N (defoaming agent) 0.5%, BYK-354 (leveling agent) 0.5%.

[0054] Using the same preparation method as above, the cover ink was prepared.

[0055] Coat the cover plate ink prepared in this example on the surface of sodium silicate glass to obtain an ink coating with a thickness of 15 μm, and then use 1000 mJ / cm 2 Irradiated by a high-pressure mercury lamp. The results are as follows:

[0056]

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PUM

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Abstract

The invention relates to cover plate ink based on a cationic photoinitiator. The cover plate ink comprises the following components: 40-65% of liquid epoxy resin, 20-40% of a reactive diluent, 2-4% of a cationic photoinitiator, 6-12% of a black pigment, 2-8% of matting powder, 3-10% of a dispersant, 1-3% of a thixotropic agent, 0.1-1% of an anti-foaming agent and 0.1-1% of a leveling agent. The components are metered in percentage by mass. The liquid epoxy resin is a combination of at least two liquid epoxy resins. According to the cover plate ink, the cationic photoinitiator is adopted, the problem of curing of the inner layer of the ink can be well solved, and the cationic photoinitiator is not affected by oxygen in air, and the problem of free radical loss caused by free radical collision and the like is solved. The ultraviolet curing cover plate ink can be used on cover plates of electronic equipment such as mobile phones, televisions and tablet personal computers, and is simple in processing technology, high in efficiency, low in energy consumption and free of pollution to the environment.

Description

technical field [0001] The invention relates to the technical field of cover ink, in particular to a cover ink based on a cationic photoinitiator and a preparation method thereof. Background technique [0002] Touch screen mobile phones are currently the most popular form of mobile phones. In the industry, in order to make the color of the mobile phone cover and the body match, black frame / white frame of ink will be printed on the cover, which is not only beautiful but also prevents light leakage from the screen. Otherwise, if there is no ink frame, the edge of the screen will be You will see obvious halos, which will affect the user's use. [0003] Traditional solvent-based cover inks are heat-curing inks, which usually need to be baked at 80°C-160°C for 30-90 minutes to fully cure, which has the disadvantages of low production efficiency and high power resource consumption. UV curable cover ink, after UV irradiation, the initiator decomposes to generate free radicals to ...

Claims

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Application Information

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IPC IPC(8): C09D11/101C09D11/03C09D11/033
CPCC09D11/101C09D11/03C09D11/033
Inventor 欧阳文张忠杰
Owner 厦门三德信科技股份有限公司
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