Colored UV-light-curable paint

A technology of curing coatings and ultraviolet light, applied in the direction of polyurea/polyurethane coatings, coatings, etc., can solve the problems of high price and difficult to widely use, and achieve the effect of high curing activity, wide applicability and excellent performance

Active Publication Date: 2012-12-12
中山大桥化工企业集团中山智亨实业发展有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing colored UV-curable coatings usually use nano-transparent color paste, but it is difficult to be widely used because of its high price

Method used

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  • Colored UV-light-curable paint
  • Colored UV-light-curable paint
  • Colored UV-light-curable paint

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Example 1 (Preparation of self-initiating resin HV-301B)

[0036] Into a 5000ml four-necked flask equipped with a condenser tube, a thermometer, an air duct, and a mechanical stirrer, pass dry air into it, start the stirrer, add 2661.6g of pentaerythritol triacrylate after 10 minutes, and dissolve 0.7g of it with 20.0g of butyl acetate p-methoxyphenol (MQ), 1.4g 2,6-di-tert-butyl-p-cresol (BHT), add the above solution into the reaction kettle under stirring condition, weigh 35.6g of 1,8-diazabicyclo [5.4.0] Undec-7-ene (DBU), dropwise added to the reaction kettle under stirring conditions, slowly warming up to 45°C; weigh 1000.0g acetylacetone, and use a constant pressure dropping funnel for 150-180min After the internal dropwise addition, wash the funnel with 30.0g of butyl acetate solvent, keep it warm at 45-55°C for 4h, add 20.0g of acrylic acid, and discharge, obtained from the initiator resin HV-301B, the reaction equation of the resin is shown in figure 1 , the...

Embodiment 2

[0037] Example 2 (Preparation of transparent red paste)

[0038] The preparation method of transparent red paste comprises the following steps:

[0039] 1) Mix 13.56g xylene and 13.56g butyl acetate to obtain a mixed solvent;

[0040] 2) Pre-disperse 34.84g of self-initiating resin (B-12, HV-301B of Guangzhou Boxing with a mass ratio of 3:1), add 1.31g of dispersant (EFKA 4010) and 13.02g of mixed solvent in sequence, and add it under stirring 4.47g transparent red powder (DIC, model: R-185), mixed well to obtain a mixture;

[0041]3) Grind the mixture at 35-40°C until the fineness is less than 5 μm, filter the material with a 5 μm filter bag, add 14.1 g of mixed solvent, and stir evenly to obtain a transparent red slurry.

[0042] The transparent red paste used in the following examples all adopts the transparent red paste prepared in this embodiment.

Embodiment 3

[0043] Example 3 (Colored UV-curable coatings)

[0044] A colored ultraviolet light curing coating, the coating contains the following components by weight:

[0045] 38 parts of urethane acrylate (UV-7605B), 7.1 parts of urethane acrylate (UV1000), 30 parts of self-initiating resin (HV-301B), 3 parts of trimethylolpropane triacrylate, 5 parts of transparent red paste, FMT 2.0 Parts, 0.5 part of 1-hydroxycyclohexyl phenyl ketone (Irgacure 184), mixed solvent (ratio by weight: 20% toluene, 40% ethyl acetate, 10% propylene glycol butyl ether, 20% cyclohexane, 10% ethyl ketone %) 20.2 parts, leveling agent (BYK333) 0.6 parts, leveling agent (BYK306) 0.2 parts, leveling agent (EFKA 3777) 0.2 parts.

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Abstract

The invention discloses a colored UV-light-curable paint comprising the components of, by weight: 40-80 parts of main resin, 2-8 parts of an active diluent, 0.1-5.0 parts of a transparent colorant, 2-4 parts of a photo-initiator, and 20-30 parts of a solvent. The main resin is composed of 40-80wt% of polyurethane acrylic ester and 20-60wt% of self-triggered UV-light-curable resin. The photo-initiator is at least one selected from an alpha-hydroxyketone photo-initiator, a phosphine oxide photo-initiator, and a titanocene photo-initiator. The transparent colorant is prepared from mixed and grinded materials of the self-triggered UV-light-curable resin as a carrier and a transparent toner. The colored UV-light-curable paint provided by the invention has advantages of excellent performance, high curing activity, high adhesion strength, good decorative effect, wide toning range, wide application range, and the like. The paint can cooperate with traditional primer paint, and electronic product film coating can be completed with a double-layer coating technology. Therefore, production cost of coating technologies can be reduced, environment pollution can be reduced, and product defective rate can be reduced.

Description

technical field [0001] The invention relates to an ultraviolet light curing paint, in particular to a colored ultraviolet light curing paint. Background technique [0002] Photocuring coating is a surface treatment technology in which a photoinitiator decomposes into free radicals or cations under the action of ultraviolet light, and then initiates unsaturated double bond polymerization to form a film. Compared with traditional solvent-based coatings, photocuring coatings can greatly reduce Environmental pollution and damage to human health caused by organic volatiles. At the same time, it also has a high crosslinking density. The paint film has excellent mechanical, chemical resistance, weather resistance and decorative properties, so it is widely used in electronic products. in the coating process. [0003] At present, the coating process of 3C electronic products usually uses traditional light-curing coatings for three-layer coating, which has the advantages of excellent...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 张博孙太荣于学亚林建明
Owner 中山大桥化工企业集团中山智亨实业发展有限公司
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