Anti-yellowing epoxy resin coating and preparation method thereof

A technology for 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 excellent performance

Active Publication Date: 2016-06-22
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, tributyltin chloride and benzophenone to the reaction vessel, and heat Raise the temperature to 110° C., stir with magnetic force, react for 3 hours, cool, filter, and remove 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, tributyltin chloride and benzophenone in the reaction vessel, heat Raise the temperature to 120° C., stir with magnetic force, react for 2 hours, cool, filter, and remove 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, tributyltin chloride and benzophenone in the reaction vessel, heat Raise the temperature to 115° C., stir with magnetic force, react for 2.5 hours, cool, filter, and remove 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 a yellowing-resistant epoxy resin coating, which is prepared from the following raw materials in parts by weight: 50-60 parts of epoxy resin, 50-60 parts of rosin water, 20-25 parts of butyl acetate, propylene glycol methyl 15-18 parts of ether acetate, 10-15 parts of polyvinyl alcohol, 10-12 parts of diatomaceous earth, 5-10 parts of sodium dehydroacetate, 5-8 parts of xylene, tributyl chloride 5 to 10 parts of tin, 3 to 5 parts of benzophenone, 2 to 5 parts of paraben; the preparation method is: add epoxy resin and rosin water into the reaction vessel, stir, fully dissolve and add silicon Alginate and paraben, heat up, stir, react; add butyl acetate, propylene glycol methyl ether acetate, polyvinyl alcohol, sodium dehydroacetate, xylene, tributyl chloride and benzophenone, heat Heating up, stirring, reacting, and cooling to obtain an anti-yellowing epoxy resin coating. This anti-yellowing epoxy resin coating has excellent anti-yellowing performance, and it is still as white as ever after several years of painting.

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 Patents(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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