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Adhesive composition and flexographic printing plate material

A technology of composition and adhesive, applied in the field of materials, can solve the problems of high production cost, complex process, low glass transition temperature of adhesive, etc.

Pending Publication Date: 2022-04-29
CHINA LUCKY FILM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the undercoating process is loaded down with trivial details, and the process is complicated, and the production cost is high.
[0006] At present, most of the disclosed reactive adhesive compositions use acrylate polymers as the main resin, but usually the glass transition temperature of the adhesive is low, and a composite release film or release film is required after coating. Paper, requiring long curing times above room temperature

Method used

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  • Adhesive composition and flexographic printing plate material
  • Adhesive composition and flexographic printing plate material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] (1) 5 parts by weight of hydroxyethylacrylamide and 80 parts by weight of C 1-8 Alkyl acrylate monomers and 15 parts by weight of vinyl acetate are used as monomers, and they are reacted in a nitrogen atmosphere at 72±5°C for 4 to 6 hours to polymerize to form acrylic polymer resins containing hydroxyl groups, with a relative weight average molecular weight of 50,000 and vitrification The transition temperature was 32°C.

[0049] (2) According to the formula shown in Table 1, combine the synthesized hydroxyl-containing acrylic polymer resin with special acrylate UVD5020, polyethylene glycol (2) monoacrylate, N3300, dibutyltin dilaurate, 1 -Hydroxycyclohexylacetophenone, p-hydroxyanisole, ethyl acetate and tetrakis[β-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol ester, mix and stir evenly at room temperature and away from light , prepared into a coating glue; apply the prepared coating glue on the PET substrate, put it in a 100°C oven for 4 minutes, ...

Embodiment 2

[0051] (1) 10 parts by weight of hydroxyethyl methacrylate and 70 parts by weight of C 1-8 Alkyl acrylate monomer and 20 parts by weight styrene monomer are reacted in a nitrogen atmosphere at 72±5°C for 4 to 6 hours to polymerize to form a hydroxyacryl polymer resin with a relative weight average molecular weight of 600,000 and a glass transition temperature of 34 ℃.

[0052] (2) According to the formula shown in Table 1, combine the synthesized hydroxyl-containing acrylic polymer resin with UVU6219 aliphatic polyurethane diacrylate, glyceryl acrylate, 1,4-cyclohexane diisocyanate, aluminum acetylacetonate , dibenzoyl peroxide, butyl acetate, octyl 3,5-di-tert-butyl-4-hydroxyphenylpropionate, and silicon dioxide at room temperature and in the dark, mix and stir evenly, and prepare a coating glue; The coating glue solution is coated on the PET substrate, put it in a 100°C oven for 4 minutes, and then take it out to obtain a coated substrate; extrude or cast the photosensitive...

Embodiment 3

[0054] (1) 20 parts by weight of 2-hydroxypropyl methacrylate and 60 parts by weight of C 1-8 Alkyl acrylate monomers and 20 parts by weight of acrylamide are used as monomers, reacted in a nitrogen atmosphere at 72±5°C for 4 to 6 hours, and polymerized to form a hydroxyacryl polymer resin with a relative weight-average molecular weight of 40,000 and a glass transition temperature of 35°C.

[0055] (2) According to the formula shown in Table 1, the synthetic hydroxyl-containing acrylic polymer resin and UVB2200 aminoacrylate, polycaprolactone monoacrylic acid (HA2), isophorone diisocyanate, dilauric acid di Butyltin, (2,4,6-trimethylbenzoyl)diphenylphosphine oxide, phenyltriazole, ethylene glycol monomethyl ether are mixed and stirred evenly at room temperature and protected from light, and prepared into a coating glue; the prepared Coat the good coating glue on the PET substrate, put it in an oven at 100°C for 4 minutes and take it out to obtain a coated substrate; extrude o...

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Abstract

The invention discloses an adhesive composition and a flexible printing plate material. The adhesive composition comprises a hydrophobic acryloyl polymer containing at least one of hydroxyl, amino and carboxyl, a hydrophobic acryloyl polymer containing an unsaturated reactive group, an acrylate monomer containing hydroxyl, a curing agent, a catalyst, an initiator, a polymerization inhibitor and a solvent. Therefore, the adhesive composition has the following advantages: a base material coated with the adhesive composition can be quickly subjected to surface drying after light or heat curing, and can be directly rolled without compounding a release film or curing, so that the production process is simplified, the production cost is reduced, and the production efficiency is improved; the adhesive composition has solvent resistance and can resist solvents such as polar solvents, alkalescent solvents and organic solvents, so that the adhesive composition can be applied to printing plate materials, in particular to flexible printing plate materials; the adhesive composition has reactivity, and thermosetting or photo-curable resin is bonded with a base material by establishing chemical bonds, so that the release force is greatly enhanced.

Description

technical field [0001] The invention relates to the field of materials, in particular to an adhesive composition and a flexographic printing plate. Background technique [0002] PET polyester film is a film made of polyethylene terephthalate polymer by biaxial stretching. PET polyester film has the characteristics of high light transmission, low haze, high brightness, good flatness, high temperature resistance, and not easy to break, and has been widely used in recent years. However, the surface crystallization of the PET polyester film is highly oriented, which makes it difficult for the coating molecules to penetrate into the PET film, and also makes it difficult to form a good interface bond with the coating. Therefore, solving the interface bonding problem between PET film base material and coating has become the focus of research. At present, there are three methods for treating the surface of PET substrates: [0003] One is to etch and oxidize the surface of the sub...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09J175/04C09J175/14C09J167/06B41N1/12B41N1/24
CPCC09J175/04B41N1/12B41N1/24C08L75/14C08L67/06C08L75/04
Inventor 王茜刘孟姜伟马慧君李娜李永杰许士鲁
Owner CHINA LUCKY FILM CORP