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Volatile organic solvent-free UV spraying finish coat

A volatile organic, spray-coated surface technology, applied in coatings, polyester coatings, epoxy resin coatings, etc., can solve problems affecting production efficiency, waste of energy, environmental damage, etc., to save energy and production space, and reduce spraying times, the effect of reducing air pollution

Active Publication Date: 2011-04-27
东莞大宝化工制品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, there are still some deficiencies in existing UV coatings. Generally, UV coatings have high viscosity and are only suitable for roller coating or shower coating. Because UV monomers have high viscosity, only adding UV monomers cannot reduce the viscosity to sprayable viscosity. , if you want to use spraying, you must add volatile organic solvents to reduce the viscosity before spraying; however, if you add volatile organic solvents to UV coatings, it will cause VOC problems, which will cause environmental damage relatively, and you need to wait after spraying. Only when the organic solvent is completely volatilized can it be cured by light, which will affect the production efficiency; and if it is necessary to heat to accelerate the volatilization of the organic solvent, it will waste energy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] A UV spray topcoat that does not contain volatile organic solvents; includes the following substances calculated by weight percentage: N-vinylcaprolactam 20%, 1,6-hexanediol diacrylate 20%, trimethylolpropane Acrylic 5%, active amine 1.7%, 1173 initiator 5%, benzophenone 3%, epoxy acrylic resin 25%, polyester acrylic resin 5%, polyurethane acrylic resin 5%, acrylic leveling agent 0.2 %, 0.1% of Tego410 leveling agent.

[0054] The method for UV spray topcoat without volatile organic solvents; including the following preparation steps:

[0055] A. Put the amount of N-vinylcaprolactam, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate in a reaction kettle for stirring, wherein the stirring speed is 300 revolutions / minute;

[0056] B. During the stirring process, add the active amine, 1173 initiator and benzophenone in the stated amount to the reaction kettle, and the stirring speed is 800 rpm;

[0057] C. After stirring for 5 minutes, add the amount of epoxy acrylic r...

Embodiment 2

[0060] A UV spray topcoat that does not contain volatile organic solvents; includes the following substances calculated by weight percentage: N-vinylcaprolactam 31%, 1,6-hexanediol diacrylate 10%, trimethylolpropane trimethylolpropane Acrylic 12%, active amine 1%, 1173 initiator 2%, benzophenone 1%, epoxy acrylic resin 20%, polyester acrylic resin 12%, polyurethane acrylic resin 10%, acrylic leveling agent 0.5 %, 0.5% of Tego410 leveling agent.

[0061] The method for UV spray topcoat without volatile organic solvents; including the following preparation steps:

[0062] A. Put the said amount of N-vinylcaprolactam, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate in a reaction kettle for stirring, wherein the stirring speed is 800 revolutions / minute;

[0063] B. During the stirring process, add the said amount of active amine, 1173 initiator and benzophenone into the reaction kettle, and the stirring speed is 300 rpm;

[0064] C. After stirring for 5 minutes, add the amou...

Embodiment 3

[0067] A UV spray topcoat that does not contain volatile organic solvents; includes the following substances calculated by weight percentage: N-vinylcaprolactam 29%, 1,6-hexanediol diacrylate 15%, trimethylolpropane Acrylic 9%, active amine 2%, 1173 initiator 4%, benzophenone 1.3%, epoxy acrylic resin 24%, polyester acrylic resin 10%, polyurethane acrylic resin 5%, acrylic leveling agent 0.5 %, 0.2% of Tego410 leveling agent.

[0068] The described method for UV spray topcoat without volatile organic solvent; including the following preparation steps:

[0069] A. Put the amount of N-vinylcaprolactam, 1,6-hexanediol diacrylate and trimethylolpropane triacrylate in a reaction kettle for stirring, where the stirring speed is 600 revolutions / minute;

[0070] B. During the stirring process, add the said amount of active amine, 1173 initiator and benzophenone into the reaction kettle, and the stirring speed is 600 revolutions per minute;

[0071] C. After stirring for 5 minutes, add the am...

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PUM

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Abstract

The invention relates to the technical field of coatings, in particular to a volatile organic solvent-free ultraviolet (UV) spraying finish coat. The finish coat comprises 20 to 35 percent of N-vinyl caprolactam, 10 to 20 percent of 1,6-hexamethylene diacrylate, 5 to 12 percent of trimethylolpropane triacrylate, 1 to 3 percent of active amine, 2 to 5 percent of 1173 initiator, 1 to 3 percent of benzophenone, 20 to 30 percent of epoxy acrylic resin, 5 to 12 percent of polyester acrylic resin, 5 to 10 percent of polyurethane acrylic resin, 0.1 to 0.6 percent of acrylic leveling agent and 0.1 to0.5 percent of Tego410 leveling agent. The materials are added at different time and are controlled at different stirring revolutions to prepare the finished product. The finish coat is low in viscosity, suitable for spraying, does not contain a volatile organic solvent at all, and is environmentally-friendly.

Description

Technical field [0001] The invention relates to the technical field of coatings, in particular to a UV spray topcoat without volatile organic solvents. Background technique [0002] UV coating is a coating that is hardened by the chemical action of ultraviolet radiation. Its main components are composed of photosensitive resin, photoinitiator and auxiliary agents. The coating uses high-energy ultraviolet light as the curing energy, and is composed of the photoinitiator in the coating. Absorbing ultraviolet light can form free radicals, triggering photosensitive resin and reactive diluent molecules, and then a chain polymerization reaction occurs, so that the coating film can be cured. UV coatings have the advantages of fast curing, energy saving, normal temperature curing, superior performance, etc., so they are widely used in chemical, machinery, electronics, communications and other fields. [0003] However, the existing UV coatings still have some shortcomings. The general UV c...

Claims

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Application Information

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IPC IPC(8): C09D163/10C09D167/06C09D175/14C09D7/12
Inventor 陈贺生
Owner 东莞大宝化工制品有限公司
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