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Photocuring coating composition, photocuring coating and application

A light-curing coating and composition technology, applied in the field of paint film repair, can solve the problems of long curing time, irritating odor and unenvironmental protection, and achieve the effects of low VOC content, small volume shrinkage, and good environmental protection

Active Publication Date: 2022-06-21
CHANGZHOU TRONLY NEW ELECTRONICS MATERIALS +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of the present invention is to provide a kind of photocurable coating composition, photocurable coating and application, to solve the problem that the repair coating used in the existing automobile paint film repair process has a long curing time and can emit serious pungent smell. Environmental issues

Method used

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  • Photocuring coating composition, photocuring coating and application
  • Photocuring coating composition, photocuring coating and application
  • Photocuring coating composition, photocuring coating and application

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preparation example Construction

[0022] In the preparation process of the above-mentioned oxetane resin, the catalyst can be selected from the types commonly used in the art. In a preferred embodiment, the catalyst includes but is not limited to quaternary ammonium salts, more preferably tetrabutylammonium bromide, cetyltrimethylammonium bromide and octadecyldimethylbenzyl bromide one or more of the group consisting of ammonium.

[0023] In the preparation process of the above-mentioned oxetane resin, a solvent commonly used in the art can be selected, such as toluene.

[0024] In a preferred embodiment, the oxetane monomers include but are not limited to 3-hydroxymethyl-3-ethyloxetane, 3,3'-[oxybismethylene]bis [3-ethyl]oxetane, 3-ethyl-3-[4-[(3-ethyloxetan-3-yl)methoxy]butoxymethyl]oxetane One or more of the group consisting of cyclobutane and 1,3-bis(3-ethyl-3-methoxyoxetane)-2-hydroxypropane. Compared with other types of oxetane monomers, the above several oxetane monomers have relatively suitable visc...

Embodiment 1

[0038] A quick-drying cationic light-curing auto repair primer, comprising in parts by weight: 20 parts of oxetane resin, 10 parts of 4-phenylthio triphenyl sulfur hexafluorophosphate, 3,3'- [Oxybismethylene]bis[3-ethyl]oxetane monomer 39.4 parts, 3-hydroxymethyl-3-ethyloxetane monomer 5 parts, BYK021 defoamer 0.3 parts, 0.3 parts of BYK180 dispersant, 15 parts of titanium dioxide, and 10 parts of superfine barium sulfate.

[0039] Wherein, the oxetane resin is prepared from the following components in parts by weight: 50 parts of 3-ethyl-3-[(ethylene oxide-2-methoxy)methyl]oxetane, tetrabutylene 1 part of ammonium bromide, 24 parts of toluene and 25 parts of succinic anhydride.

[0040] The preparation method is as follows: add oxetane resin, cationic photoinitiator, oxetane monomer, defoamer and dispersant in sequence according to the proportion, and stir at a speed of 400r / min until uniform; then add pigments and fillers , stirred at a speed of 800r / min until uniform; gro...

Embodiment 2

[0043] A quick-drying cationic light-curing auto repair primer, comprising in parts by weight: 30 parts of oxetane resin, 5 parts of 4-phenylthiotriphenylsulfonium hexafluoroantimonate, 3-ethyl acetate -30 parts of 3-[4-[(3-ethyloxetan-3-yl)methoxy]butoxymethyl]oxetane monomer, 3-hydroxymethyl-3- 10 parts of ethyl oxetane monomer, 0.5 part of BYK019 defoamer, 0.5 part of BYK190 dispersant, 14 parts of titanium dioxide, and 10 parts of heavy calcium carbonate. The oxetane resin is prepared from the following components in parts by weight: 40 parts of 3-ethyl-3-[(ethylene oxide-2-methoxy)methyl]oxetane, hexadecyl 0.5 parts of trimethylammonium bromide, 39.5 parts of toluene, and 20 parts of succinic anhydride.

[0044] The preparation method is as follows: add oxetane resin, cationic photoinitiator, 3-ethyl-3-[4-[(3-ethyloxetane-3-yl)methoxy] sequentially according to the proportion Butoxymethyl]oxetane monomer, defoamer, dispersant, stir at a speed of 600r / min until uniform; ...

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Abstract

The invention provides a photocureable coating composition, a photocureable coating and application. The photocureable coating composition is prepared from the following components in parts by weight: 20 to 30 parts of oxetane resin, 40 to 55 parts of oxetane monomer and 5 to 10 parts of cationic photoinitiator. Under the initiation action of the cationic photoinitiator, the oxetane monomer and the oxetane resin can be subjected to a polymerization reaction within a short time and are cured to form a film. The photocureable coating composition is small in volume shrinkage rate in the curing process, and no toxic or harmful gas is emitted, so that the photocureable coating composition has very good environmental protection property. When the dosage of each component is limited to a specific proportion, the formed photocuring coating also has excellent physical and chemical comprehensive properties such as relatively good adhesive force, flexibility, impact resistance and salt spray resistance. Compared with an existing photocureable coating, the photocureable coating can be rapidly cured after being irradiated by a portable UV lamp, the VOC content is low, and the photocureable coating is an environment-friendly coating.

Description

technical field [0001] The invention relates to the field of paint film repair, in particular to a light-cured coating composition, a light-cured coating and applications. Background technique [0002] During the use of the car, due to the sun and rain and the corrosion of various chemicals, the paint film of the car body will gradually age, and there will be cracks, discoloration, spots and other phenomena. In addition, due to vehicle accidents and other reasons, the paint film will also be partially damaged. When the car body paint film has lost its original protective and decorative functions, the car body paint film needs to be repaired. The auto repair primer is the basic coating for the surface repair of the car body. It plays the role of sealing the metal coating in the process of repairing the car paint, preventing the metal surface from oxidative corrosion and filling in the subtle defects and rust spots of the metal substrate. [0003] At present, the constructio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D171/02C08G65/22
CPCC09D171/02C08G65/22
Inventor 钱晓春张学龙金晓蓓王振东
Owner CHANGZHOU TRONLY NEW ELECTRONICS MATERIALS
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