CN104673081A

CN104673081A - Ultraviolet photo-curing varnish with high hardness and yellowing resistance

Info

Publication number: CN104673081A
Application number: CN201310629130.7A
Authority: CN
Inventors: 杨如切
Original assignee: HUIZHOU KAIHUI CHEMICAL CO Ltd
Current assignee: HUIZHOU KAIHUI CHEMICAL CO Ltd
Priority date: 2013-12-02
Filing date: 2013-12-02
Publication date: 2015-06-03

Abstract

The invention relates to the field of coatings, and particularly relates to an ultraviolet photo-curing varnish with high hardness and yellowing resistance. The ultraviolet photo-curing varnish is prepared from the following components in percentage by weight: 20-60 percent of aromatic urethane acrylate, 13-30 percent of a monomer, 2-5 percent of a photo initiator, 25-50 percent of diluents, 0.5-2 percent of an ultraviolet absorber and 0.5-2 percent of a functional auxiliary agent. The ultraviolet photo-curing varnish is high in yellowing resistance; a plastic substrate subjected to film forming is high in strength, high in hardness, high in abrasion property, high in luster, high in weather resistance, high in solvent resistance, durable to use and difficult to yellow.

Description

A kind of high rigidity color inhibition ultraviolet-cured paint

Technical field

The present invention relates to paint field, be specifically related to a kind of high rigidity color inhibition ultraviolet-cured paint.

Background technology

Ultraviolet-curing paint is widely used in consumption electronic product, auto-parts, cosmetic package, high-grade wine-bottle.But UV coating itself has certain defect, cause its easy xanthochromia, restriction has been suffered in the application that xanthochromia makes non-colored light coating material solidified.The major cause of xanthochromia has two, and one is UV coating xanthochromia, this is because cause electrochromic substance containing some heat (light) in some resin systems, after being heated, molecular structure changes, and produces stronger conjugated structure, coating color is turned yellow.Two is unstable of initiator self, some light trigger also can produce some by products while being decomposed generation free radical by ultraviolet radiation, by product has quinoid structure or rigidity conjugate planes are very strong, easily absorbs the sunlight of a certain wave band, and then makes coating present yellow.

Although in the prior art, adopt not containing monomer and the resin of conjugated structure, can increase anti-yellowing property, often the hardness of coating can reduce again.

Summary of the invention

Technical problem to be solved by this invention is to provide one and both had high rigidity, again the ultraviolet-cured paint of color inhibition.

Technical problem to be solved by this invention is achieved by the following technical programs:

A kind of high rigidity color inhibition ultraviolet-cured paint, is made up of the component of following weight percent:

Aromatic urethane acrylate 20 ~ 60%; Monomer 13 ~ 30%; Light trigger 2 ~ 5%; Thinner 25 ~ 50%; Ultraviolet absorbers 0.5 ~ 2%; Functional agent 0.5 ~ 2%.

Further, described monomer is the mixture of trimethylolpropane formal acrylate, caprolactone.

Further, described light trigger is 2-hydroxy-2-methyl-1-phenyl-1-acetone, the good mixture of solid 754 of vapour Ba Yan.

Further, described ultraviolet absorbers is benzylidene malonic acid salt.

Further, described thinner is N-BUTYL ACETATE, isopropylcarbinol, at least one in propylene glycol phenylate.

Further, described functional agent flow agent, at least one in defoamer.Flow agent is the flow agent that the art is commonly used, and is preferably BYK354; Defoamer is the defoamer that the art is commonly used, and is preferably BYK141.

Further, the weight percent of each component is preferably:

Aromatic urethane acrylate 25 ~ 50%; Trimethylolpropane formal acrylate 7 ~ 15%; Caprolactone 7 ~ 15%; 2-hydroxy-2-methyl-1-phenyl-1-acetone 1 ~ 2%; Vapour Ba Yan good solid 754 1 ~ 2%; Thinner 25 ~ 50%; Ultraviolet absorbers 0.5 ~ 2%; Flow agent 0.5 ~ 1%; Defoamer 0.5 ~ 1%.

The present invention has following beneficial effect:

Ultraviolet-cured paint yellowing resistance of the present invention is excellent, and the plastic rubber substrate after film forming has high strength, high rigidity, high-wearing feature, high gloss, high-weatherability and high solvent resistance, durable in use, not easily xanthochromia.

Embodiment

Below in conjunction with embodiment, the present invention will be described in detail, and embodiment is only the preferred embodiment of the present invention, is not limitation of the invention.

embodiment 1

Aromatic urethane acrylate 35%; Trimethylolpropane formal acrylate 10%; Caprolactone 12%; 2-hydroxy-2-methyl-1-phenyl-1-acetone 1%; Vapour Ba Yan good solid 754 1%; Benzylidene malonic acid salt 1%; Isopropylcarbinol 38%; BYK354 1%; BYK141 1%.

embodiment 2

Aromatic urethane acrylate 32%; Trimethylolpropane formal acrylate 7%; Caprolactone 10%; 2-hydroxy-2-methyl-1-phenyl-1-acetone 1%; Vapour Ba Yan good solid 754 1%; Propylene glycol phenylate 47%; Benzylidene malonic acid salt 0.5%; BYK354 1%; BYK141 0.5%.

embodiment 3

Aromatic urethane acrylate 39%; Trimethylolpropane formal acrylate 8%; Caprolactone 9%; 2-hydroxy-2-methyl-1-phenyl-1-acetone 1%; Vapour Ba Yan good solid 754 1%; N-BUTYL ACETATE 38%; Benzylidene malonic acid salt 2%; BYK354 1%; BYK141 1%.

The above embodiment only have expressed embodiments of the present invention; it describes comparatively concrete and detailed; but therefore can not be interpreted as the restriction to the scope of the claims of the present invention; in every case the technical scheme adopting the form of equivalent replacement or equivalent transformation to obtain, all should drop within protection scope of the present invention.

Claims

1. a high rigidity color inhibition ultraviolet-cured paint, is characterized in that being made up of the component of following weight percent:

Aromatic urethane acrylate 20 ~ 60%;

Monomer 13 ~ 30%;

Light trigger 2 ~ 5%;

Thinner 25 ~ 50%;

Ultraviolet absorbers 0.5 ~ 2%;

Functional agent 0.5 ~ 2%.

2. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1, it is characterized in that, described monomer is the mixture of trimethylolpropane formal acrylate, caprolactone.

3. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1, is characterized in that, described light trigger is 2-hydroxy-2-methyl-1-phenyl-1-acetone, the good mixture of solid 754 of vapour Ba Yan.

4. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1, it is characterized in that, described ultraviolet absorbers is benzylidene malonic acid salt.

5. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1, it is characterized in that, described thinner is N-BUTYL ACETATE, isopropylcarbinol, at least one in propylene glycol phenylate.

6. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1, is characterized in that, described functional agent flow agent, at least one in defoamer.

7. a kind of high rigidity color inhibition ultraviolet-cured paint according to claim 1 ~ 6 Arbitrary Term, is characterized in that, the weight percent of each component is preferably:

Aromatic urethane acrylate 25 ~ 50%;

Trimethylolpropane formal acrylate 7 ~ 15%;

Caprolactone 7 ~ 15%;

2-hydroxy-2-methyl-1-phenyl-1-acetone 1 ~ 2%;

Vapour Ba Yan good solid 754 1 ~ 2%;

Thinner 25 ~ 50%;

Ultraviolet absorbers 0.5 ~ 2%;

Flow agent 0.5 ~ 1%;

Defoamer 0.5 ~ 1%.