Transparent acrylic acid intermediate-coating paint base stock and preparation method thereof

Abstract

The invention discloses a transparent acrylic acid intermediate-coating paint base stock and a preparation method thereof. The base stock comprises the following ingredients in percentage by weight: 40.0%-45.0% of polymethyl methacrylate, 35.0%-40.0% of iso-octyl methacrylate, 1.0%-5.0% of butyl acetate, 1.0%-5.0% of isobutyl acetate, 1.0%-5.0% of cyclohexanone, 1.0%-5.0% of methyl ethyl ketone, 1.0%-5.0% of methyl isobutyl ketone, and 0-3.5% of cellulose acetate. The transparent acrylic acid intermediate-coating paint base stock can meet the requirement of mobile phone industry on no halogen in paint. Transparent acrylic acid intermediate-coating paint produced by the base stock is additionally provided with a mating curing agent, spraying diluents, halogen-free acrylic acid primer and ultraviolet radiation curing finishing paint for use and then is sprayed onto polycarbonate ester plastics, and a dried and cured coating has excellent boiling resistance.

Description

technical field [0001] The invention relates to the field of paint making, in particular to an acrylic transparent intermediate paint base material and a preparation method of the acrylic transparent intermediate paint. Background technique [0002] At present, the plastic shell of mobile phone is painted with halogen-containing acrylic primer and halogen-containing transparent primer and UV radiation curing topcoat, and also with halogen-free primer and halogen-free transparent primer. UV radiation curing topcoat is used for coating. With the restriction of environmental management substances by some mobile phone manufacturers at home and abroad, there are clear regulations on the halogen content in the mobile phone coating formula. It is required that the bromine content in the mobile phone coating formula is less than 900ppm, and the chlorine content Less than 900 ppm, the total content of bromine and chlorine is less than 1500 ppm, and the halogen-containing primer and c...

AI Technical Summary

Problems solved by technology

[0002] At present, the plastic shell of mobile phone is painted with halogen-containing acrylic primer and halogen-containing transparent primer and UV radiation curing topcoat, and also with halogen-free primer and halogen-free transparent primer. UV radiation curing topcoat is used for coating. With the restriction of environmental management substances by some mobile phone manufacturers at home and abroad, there are clear regulations on the halogen content in the mobile phone coating formula. It is required that the bromine content in the mobile phone coating formula is less than 900ppm, and the chlorine content Less than 900 ppm, the total content of bromine and chlorine is less than 1500 ppm, and the halogen-containing primer and clear base coat are not suitable for some mobile phone manufacturers; no halogen-free clear base coat with UV-curable topcoat has been found so far. After passing the test of boiling at 100°C for 30 minutes, the coating film will not bubble, crack, or change color, and the adhesion will meet the boiling resistance performance requirements of 4B-5B, which does not meet the requirements of mobile phone manufacturers with boiling performance requirements.