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Anti-yellowing epoxy resin coating and preparation method thereof

A technology of changing epoxy resin and epoxy resin, which is applied in the field of anti-yellowing epoxy resin coating and its preparation, can solve the problems of poor yellowing resistance of paint, and achieve the effects of low VOC content, strong anti-fouling ability, and bright color

Active Publication Date: 2014-10-15
DRAGON FISH PAINT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of this invention is to provide a kind of anti-yellowing epoxy resin coating and preparation method thereof, this anti-yellowing epoxy resin coating can solve the problem of poor yellowing resistance of paint

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Add 5 kg of epoxy resin and 6 kg of rosin water into the reaction container, stir magnetically, and fully dissolve; add 1.2 kg of diatomaceous earth and 0.5 kg of paraben into the reaction container, raise the temperature to 80 ° C, stir magnetically, and react for 60 minutes; then add 2 kilograms of butyl acetate, 1.8 kilograms of propylene glycol methyl ether acetate, 1.3 kilograms of polyvinyl alcohol, sodium dehydroacetate, xylene, tributyl chloride and benzophenone in the reaction vessel, and heat up to 110° C., stirred by magnetic force, reacted for 3 hours, cooled, filtered, and removed the filter residue to obtain an anti-yellowing epoxy resin coating.

[0016] The epoxy resin coating prepared in this example was transferred into a yellowing resistance test box to measure its yellowing resistance performance, and its yellowing resistance grade reached level 4.

Embodiment 2

[0018] Add 60 kg of epoxy resin and 55 kg of rosin water into the reaction container, stir magnetically, and fully dissolve; add 10 kg of diatomaceous earth and 2 kg of paraben into the reaction container, heat up to 85 ° C, stir magnetically, and react for 45 Minutes; then add 25 kilograms of butyl acetate, 15 kilograms of propylene glycol methyl ether acetate, 15 kilograms of polyvinyl alcohol, sodium dehydroacetate, xylene, tributyl chloride and benzophenone in the reaction vessel, heat up to 120°C, stirred by magnetic force, reacted for 2 hours, cooled, filtered, and removed the filter residue to obtain an anti-yellowing epoxy resin coating.

[0019] The epoxy resin coating prepared in this example was transferred into a yellowing resistance test box to measure its yellowing resistance performance, and its yellowing resistance grade reached level 4.

Embodiment 3

[0021] Add 550 kilograms of epoxy resin and 550 kilograms of rosin water into the reaction vessel, stir magnetically, and fully dissolve; add 110 kilograms of diatomaceous earth and 35 kilograms of parabens into the reaction vessel, heat up to 90 ° C, stir magnetically, and react for 30 Minutes; then add 230 kilograms of butyl acetate, 165 kilograms of propylene glycol methyl ether acetate, 100 kilograms of polyvinyl alcohol, sodium dehydroacetate, xylene, tributyl chloride and benzophenone in the reaction vessel, heat up to 115°C, stirred by magnetic force, reacted for 2.5 hours, cooled, filtered, and removed the filter residue to obtain an anti-yellowing epoxy resin coating.

[0022] The epoxy resin coating prepared in this embodiment was transferred into a yellowing resistance test box to measure its yellowing resistance, and its yellowing resistance grade reached 3.5.

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PUM

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Abstract

The invention discloses an anti-yellowing epoxy resin coating, which is prepared from the following raw materials in parts by weight: 50 to 60 parts of epoxy resin, 50 to 60 parts of rosin water, 20 to 25 parts of butyl acetate, 15 to 18 parts of propylene glycol methyl ether acetate, 10 to 15 parts of polyving akohol, 10 to 12 parts of diatomaceous earth, 5 to 10 pats of sodium dehydroacetate, 5 to 8 parts of xylene, 5 to 10 parts of tributyltin chloride, 3 to 5 parts of diphenyl ketone and 2 to 5 parts of nipagin ester. The preparation method comprises the steps as follows: adding the epoxy resin and the rosin water into a reaction vessel; stirring, fully dissolving and then adding the diatomaceous earth and nipagin ester; heating, stirring, reacting; adding butyl acetate, propylene glycol methyl ether acetate, polyving akohol, sodium dehydroacetate, xylene, tributyltin chloride and diphenyl ketone, and then reheating, stirring, reacting and cooling to obtain the anti-yellowing epoxy resin coating. The anti-yellowing epoxy resin coating is excellent in anti-yellowing performance, and remains pure white as before after being used for a number of years.

Description

technical field [0001] The invention relates to the technical field of chemical coatings, in particular to an anti-yellowing epoxy resin coating and a preparation method thereof. Background technique [0002] Epoxy resin coatings are usually a stable dispersion system formed by distributing epoxy resin in a solvent in the form of particles, droplets or colloids, which can be divided into emulsions, aqueous dispersions or aqueous solutions. Epoxy resin coating has strong cohesion, dense molecular structure, strong adhesion, small curing shrinkage, excellent electrical insulation, stability and acid and alkali resistance. However, existing epoxy resin coatings easily absorb moisture in the air during use, and under the action of ultraviolet rays, accelerate the degradation of epoxy resins, resulting in yellowing of epoxy resin coatings. Contents of the invention [0003] The object of the present invention is to provide a yellowing-resistant epoxy resin coating and a prepar...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D163/00C09D193/04C09D7/12
Inventor 苏东荣韦光南梁勇坚
Owner DRAGON FISH PAINT
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