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

A technology of acrylic acid and polymethyl methacrylate, applied in the field of paint making, can solve the problems of non-compliance and non-compliance with mobile phone manufacturers, etc., and achieve the effects of no difference in weather resistance performance, similar formula cost, and excellent water boiling resistance.

Active Publication Date: 2013-08-21
深圳市美丽华科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0027] The acrylic transparent intermediate paint base material and the preparation method of the acrylic transparent intermediate paint base material provided by the present invention, the base material comprises the following components by weight percentage:

[0028] Polymethyl methacrylate 40.0~45.0%;

[0029] Polyisooctyl methacrylate 35.0~40.0%;

[0030] Butyl acetate 1.0~5.0%;

[0031] Isobutyl acetate 1.0~5.0%;

[0032] Cyclohexanone 1.0~5.0%;

[0033] Methyl ethyl ketone 1.0~5.0%;

[0034] Methyl isobutyl ketone 1.0~5.0%;

[0035] Cellulose acetate 0~3.5%.

[0036] The present invention also provides the preparation process of acrylic transparent intermediate paint:

[0037] A. Use the above-mentioned base material formula to make the base material of acrylic transparent primer, and stir for 5 minutes at a speed of 400-600 revolutions per minute;

[0038] B. Add halogen-free nano-color paste and (or) dye solution with a weight ratio not higher than 15% while sti...

Embodiment 1

[0041] The transparent acrylic base material of intermediate coating color paint of embodiment 1, wherein, its weight percentage consists of:

[0042] Polymethylmethacrylate 40.0%;

[0043] Polyisooctyl methacrylate 40.0%;

[0044] Butyl acetate 4.5%;

[0045] Isobutyl acetate 5.0%;

[0046] Cyclohexanone 2.5%;

[0047] Methyl ethyl ketone 2.0%;

[0048] Methyl isobutyl ketone 2.5%;

[0049] Cellulose acetate (CAB-551-0.01) 3.5%.

[0050] The production process of acrylic transparent intermediate paint base material is as follows: first add butyl acetate, cyclohexanone, methyl ethyl ketone, methyl isobutyl ketone in a tank, and add cellulose acetate ( CAB-551-0.01), after the cellulose acetate is added, stir at a speed of 600-800 per minute to dissolve the cellulose acetate (fineness is less than 5 microns), and then add polymethyl methacrylate and polymethacrylic acid The isooctyl ester was stirred at a speed of 400-600 per minute for 30 minutes to complete the acrylic...

Embodiment 2

[0053] The acrylic transparent mid-coat paint base material described in embodiment 2, wherein, its percentage by weight consists of:

[0054] Polymethylmethacrylate 42.0%;

[0055] Polyisooctyl methacrylate 35.0%;

[0056]Butyl acetate 5.0%;

[0057] Isobutyl acetate 1.0%;

[0058] Cyclohexanone 5.0%;

[0059] Methyl ethyl ketone 5.0%;

[0060] Methyl isobutyl ketone 5.0%;

[0061] Cellulose acetate (CAB-551-0.01) 1.0%.

[0062] The preparation method of the described acrylic transparent mid-coat paint of embodiment 2 is as follows:

[0063] Use the above-mentioned base material formula to make the base material for intermediate coating paint, and stir at a speed of 400-600 rpm for 5 minutes; while stirring, add halogen-free nano-color paste and (or) dye solution, after the completion of feeding and color matching, continue to stir for 30 minutes to complete the transparent mid-coat paint produced with the base material formula of the present invention. Add supporting...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D133/12C09D133/10C09D101/12C09D7/12
Inventor 鲁春风
Owner 深圳市美丽华科技股份有限公司
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