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Hydroxy acrylic resin for ultra-fast dry automobile varnish and preparation method thereof

A hydroxyacrylic acid, ultra-fast-drying technology, applied in coatings and other directions, can solve the problems of high price of varnishes, inability to dry varnishes at the same time, and difficulty in wide-scale promotion and use, and achieves excellent leveling and smooth appearance of the paint film. Bright, cost-effective effects

Inactive Publication Date: 2011-08-17
同宇新材料(广东)股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, ordinary domestic repair varnishes are difficult to meet the needs of the market
[0003] In order to solve the problem that the varnish cannot have a very fast drying speed and an excellent appearance at the same time, it is generally solved by using optimal resins, curing agents, catalysts, solvents, etc., to a certain extent, it can also endow the coating with very fast surface drying and Internal chemical crosslinking, while ensuring the excellent and even excellent appearance quality of the paint film, but the price of this kind of varnish is relatively high, and it is difficult to popularize and use it on a large scale

Method used

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  • Hydroxy acrylic resin for ultra-fast dry automobile varnish and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] 1. Prepare raw materials:

[0032] Get 28 kilograms of trimethylbenzenes and 10 kilograms of xylenes, mix and form A material;

[0033] Get 20 kilograms of styrene, 12 kilograms of sec-butyl methacrylate, 10 kilograms of hydroxypropyl methacrylate, 2 kilograms of methacrylic acid and 0.4 kilogram of maleic anhydride, and mix them into B material;

[0034] Get 1 kilogram of benzoyl peroxide, 2 kilograms of dicumyl peroxide and 3 kilograms of di-tert-butyl peroxide and mix to form C material;

[0035] 2. Put material A into the reactor and raise the temperature to 152°C;

[0036] 3. Add material B dropwise, the dropping time is controlled at 3.5 hours, and the temperature in the reactor is controlled at 152°C;

[0037] 4. After the dropwise addition, keep warm at 152°C for 4 hours;

[0038] 5. Add material C and keep warm for another 4 hours;

[0039] 6. Lower the temperature below 80° C., filter and pack to obtain the ultra-fast-drying hydroxyacrylic resin for automo...

Embodiment 2

[0041] 1. Prepare raw materials:

[0042] Get 29 kilograms of trimethylbenzenes and 12 kilograms of xylenes, mix and form A material;

[0043] Get 22 kilograms of α-styrene, 13 kilograms of tert-butyl methacrylate, 11 kilograms of hydroxypropyl methacrylate, 3 kilograms of methacrylic acid and 0.4 kilogram of maleic anhydride, and mix them into material B;

[0044] Get 2 kilograms of benzoyl peroxide, 3 kilograms of dicumyl peroxide and 2 kilograms of di-tert-butyl peroxide and mix to form C material;

[0045] 2. Put material A into the reactor and heat up at 148°C;

[0046] 3. Add material B dropwise, the dropping time is controlled within 4 hours, and the temperature in the reactor is controlled at 148°C;

[0047] 4. After the dropwise addition, keep warm at 148°C for 4 hours;

[0048] 5. Add material C and keep warm for another 4 hours;

[0049] 6. Lower the temperature below 80° C., filter and pack to obtain the ultra-fast-drying hydroxyacrylic resin for automobile var...

Embodiment 3

[0051] 1. Raw material preparation:

[0052] Get 30 kilograms of mesitylene and 15 kilograms of dimethylbenzene, mix and form A material;

[0053] Get 22 kilograms of styrene, 12 kilograms of tert-butyl methacrylate, 12 kilograms of hydroxypropyl methacrylate, 4 kilograms of methacrylic acid and 0.5 kilogram of fumaric acid, and mix them into B material;

[0054] Get 2 kilograms of benzoyl peroxide, 1 kilogram of dicumyl peroxide and 3 kilograms of di-tert-butyl peroxide and mix to form C material;

[0055] 2. Put material A into the reactor and heat up at 150°C;

[0056] 3. Add material B dropwise, the dropping time is 3 hours, and the temperature in the reactor is controlled at 150°C;

[0057] 4. After the dropwise addition, keep warm at 150°C for 4 hours;

[0058] 5. Add material C and keep warm for another 4 hours;

[0059] 6. Lower the temperature below 80° C., filter and pack to obtain the ultra-fast-drying hydroxyacrylic resin for automobile varnishes of the present...

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Abstract

The invention discloses a preparation method of hydroxy acrylic resin for ultra-fast dry automobile varnish. The preparation method comprises the following steps of: 1) putting a material A into a reaction kettle, and heating the material A to the temperature of between 140 and 160 DEG C; 2) dripping a material B for 3 to 4 hours, and controlling the temperature in the reaction kettle at 140 to 160 DEG C; 3) after the dripping is finished, preserving the heat for 3.5 to 4.5 hours at the temperature of between 140 and 160 DEG C; 4) adding a material C, and performing heat preservation reactionfor 3.5 to 4.5 hours; and 5) cooling the reaction product to be less than 80 DEG C, and filtering the reaction product, wherein the material A comprises 10 to 15 weight parts of dimethyl benzene and 28 to 32 weight parts of trimethyl benzene; the material B comprises 20 to 25 weight parts of styrene or alpha-styrene, 12 to 15 weight parts of sec-butyl methacrylate or tert-butyl methacrylate, 10 to 12 weight parts of propyl methacrylate or ethyl methacrylate or ethyl acrylate, 2 to 4 weight parts of methyl acrylic acid, and 0.3 to 1.0 weight part of maleic anhydride or fumaric acid; and the material C is 6 to 9 weight parts of initiator. The hydroxy acrylic resin is applied to the varnish, and has ultra-fast dry curing property, good construction performance and varnish film appearance.

Description

technical field [0001] The present invention relates to a resin for automobile varnishes, in particular to a super-fast-drying hydroxyacrylic resin for automobile varnishes and a preparation method thereof. The resin is mainly used for high-grade automobile varnishes, has super-fast-drying and curing properties, and It has good construction performance and paint film appearance. Background technique [0002] High-quality fast-drying car refinish varnish means fast car refinishing service and satisfactory car refinishing quality to a certain extent. In the application of automotive refinishing paint, it often takes a period of time to dry the varnish after it is painted, and the subsequent polishing and other treatments can only be carried out after drying. The drying speed of the varnish often affects the work efficiency of the car refinishing, thus improving the performance of the varnish. The drying speed is generally valued; as the last paint film for car repair, the fin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/28C08F220/06C08F222/06C08F222/02C09D125/14
Inventor 杨剑黎邹发泽郑业梅何伍南张雁裕
Owner 同宇新材料(广东)股份有限公司
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