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Yellowing-resistant UV screen printing ink

A screen printing ink, anti-yellowing technology, applied in the printing field, can solve the problems of product yellowing, affecting printing quality and effect, and easy yellowing

Inactive Publication Date: 2018-07-06
HUBEI CHINA TOBACCO IND +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing UV inks are particularly prone to yellowing during long-term use, which seriously affects the printing quality and effect. This is because most inks use traditional modified amine curing accelerators. The addition of this accelerator It will cause the product to gradually turn yellow during long-term use, so it is imminent to study a non-yellowing UV ink without amine additives

Method used

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  • Yellowing-resistant UV screen printing ink

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Mix 20 parts of tripropylene glycol diacrylate and 5 parts of trimethylolpropane triacrylate to obtain acrylate monomer; mix 1 part of CTBN, 2 parts of epoxy resin, 1 part of aluminum oxide and 1 part of silicon dioxide Uniform and pre-dispersed to obtain modified epoxy resin; 7-hydroxy-4-methyl coumarin was obtained by Pechmann method. Then react with 0.5 part of cyanuric chloride, 0.3 part of 7-hydroxyl-4-methylcoumarin and 0.6 part of 2,4-dihydroxy-benzophenone to generate macromolecules, and then react with polyethylene glycol series products 0.6 parts were subjected to polycondensation reaction, and a polymer light stabilizer was synthesized.

[0022] Mix 25 parts of the obtained acrylate monomer, 5 parts of modified epoxy resin, 2 parts of light stabilizer, 5 parts of urethane acrylate resin, 50 parts of mercapto-modified urethane acrylate and 2 parts of KIP150, and disperse, Grind and filter to finally obtain a yellowing-resistant UV screen printing ink.

Embodiment 2

[0024] Mix 23 parts of tripropylene glycol diacrylate and 7 parts of trimethylolpropane triacrylate to obtain acrylate monomer; mix 2 parts of CTBN, 4 parts of epoxy resin, 2 parts of aluminum oxide and 2 parts of silicon dioxide Uniform and pre-dispersed to obtain modified epoxy resin; 7-hydroxy-4-methyl coumarin was obtained by Pechmann method. Then react with 0.6 part of cyanuric chloride, 0.4 part of 7-hydroxyl-4-methylcoumarin and 0.7 part of 2,4-dihydroxy-benzophenone to generate macromolecules, and then react with polyethylene glycol series products 0.8 parts were subjected to polycondensation reaction, and a polymer light stabilizer was synthesized.

[0025] Mix 30 parts of the obtained acrylate monomer, 10 parts of modified epoxy resin, 2.5 parts of light stabilizer, 10 parts of urethane acrylate resin, 55 parts of mercapto-modified urethane acrylate and 6 parts of KIP150, and disperse, Grind and filter to finally obtain a yellowing-resistant UV screen printing ink. ...

Embodiment 3

[0027] Mix 25 parts of tripropylene glycol diacrylate and 10 parts of trimethylolpropane triacrylate to obtain acrylate monomer; mix 3 parts of CTBN, 6 parts of epoxy resin, 3 parts of aluminum oxide and 3 parts of silicon dioxide Uniform and pre-dispersed to obtain modified epoxy resin; 7-hydroxy-4-methyl coumarin was obtained by Pechmann method. Then react with 0.7 part of cyanuric chloride, 0.5 part of 7-hydroxyl-4-methylcoumarin and 0.8 part of 2,4-dihydroxy-benzophenone to generate macromolecules, and then react with polyethylene glycol series products One part was subjected to polycondensation reaction to synthesize a polymer light stabilizer.

[0028] Mix 35 parts of the obtained acrylate monomer, 15 parts of modified epoxy resin, 3 parts of light stabilizer, 15 parts of urethane acrylate resin, 60 parts of mercapto-modified urethane acrylate and 8 parts of KIP150, and disperse, Grind and filter to finally obtain a yellowing-resistant UV screen printing ink.

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Abstract

The invention discloses a yellowing-resistant UV screen printing ink. The ink comprises 25-35 parts of acrylate monomer, 5-15 parts of acrylate prepolymer, 50-60 parts of PUA with active hydrogen groups, 5-15 parts of modified epoxy resin, 2-8 parts of a photoinitiator and 2-3 parts of a light stabilizer. The UV ink does not contain modified amine, can undergo polymerization reaction at low energy, and can resist ultraviolet and yellowing.

Description

technical field [0001] The invention relates to the technical field of printing, in particular to an anti-yellowing UV screen printing ink. Background technique [0002] UV ink refers to the ink that uses ultraviolet light of different wavelengths and energies to polymerize the monomers in the ink binder into polymers to form a film and dry the ink under ultraviolet radiation. UV ink has good printability and suitable curing and drying rate. At the same time, it has good adhesion, and has the characteristics of wear resistance, corrosion resistance and weather resistance. [0003] At present, UV ink is more and more used in the ink industry due to its excellent performance of fast drying speed, no pollution, good stability and high printing quality. However, the existing UV inks are particularly prone to yellowing during long-term use, which seriously affects the printing quality and effect. This is because most inks use traditional modified amine curing accelerators. The ...

Claims

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Application Information

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IPC IPC(8): C09D11/101C09D11/102C09D11/03
CPCC09D11/03C09D11/101C09D11/102
Inventor 刘冬朱红艳孙鹏陈思思朱梦白潘笑平刘秀
Owner HUBEI CHINA TOBACCO IND