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A kind of preparation method of light fastness and waterproof coating

A waterproof and light-resistant technology, applied in the direction of coating, etc., can solve the problems of poor quality, serious side effects and carcinogenicity, and achieve the effects of improving waterproof performance, improving hot stickiness, cold brittleness, and light resistance

Inactive Publication Date: 2016-01-20
FOSHAN SHUNDE HESHENG CHEMICAL INDUSTRIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The light resistance of acrylate resins is often improved by adding ultraviolet absorbers and antioxidants, but the traditional synthetic antioxidants include tert-butyl hydroxyanisole, tert-butyl hydroperoxide, tert-butyl hydroquinone, etc. It has great toxic and side effects and carcinogenicity, and the effect of improving water resistance with traditional silicone materials is not good, so it is necessary to find efficient and environmentally friendly waterproof and light-resistant technologies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] (1) Add 67.5g of water, 0.5g of sodium dodecylbenzenesulfonate, 0.25g of fatty alcohol polyoxyethylene ether, and 0.45g of acrylic acid into a 500ml three-neck flask, raise the temperature to 45°C, stir for 45min, and add monomer A , emulsified for 40 minutes, heated up to 75°C, passed back flowing water, heated up to 80°C and kept warm, added dropwise 5.5g of azobisisobutylimidazoline hydrochloride solution dissolved in 5g of water, the dropwise addition time was 0.5h, and the dropwise reaction was completed for 2h , to obtain the core layer emulsion;

[0021] The A monomer is formed by mixing 7.5g of butyl acrylate, 4.5g of methyl methacrylate, 5.3g of ethyl acrylate, and 0.3g of styrene;

[0022] (2) Add B monomer and 4.5 g of azobisisobutylimidazoline hydrochloride solution dissolved in 4 g of water to the core layer emulsion obtained in step (1) at the same time, dropwise for 1 hour, and keep the reaction at 75°C for 2 hours. Add 1.5g of quercetin, heat at 75°C fo...

example 2

[0025] (1) Add 98g of water, 1.8g of sodium dodecylbenzenesulfonate, 0.9g of fatty alcohol polyoxyethylene ether, and 4.1g of acrylic acid into a 500ml three-necked flask, raise the temperature to 45°C, stir for 45min, add monomer A, Emulsify for 60 minutes, raise the temperature to 75°C, pass the reflux water, raise the temperature to 80°C, add dropwise 5.9g of tert-butyl peroxypivalate solution dissolved in 5g of water, dropwise for 2.5h, and react for 2h after the dropwise addition, to obtain the nucleus layer emulsion;

[0026] The A monomer is formed by mixing 10.5g of butyl acrylate, 7.5g of methyl methacrylate, 6.8g of ethyl acrylate and 0.9g of styrene;

[0027] (2) Add monomer B and 4.8 g of tert-butyl peroxypivalate solution dissolved in 4 g of water to the core layer emulsion obtained in step (1) at the same time, dropwise for 3 hours, keep warm at 85°C for 2 hours, and then Add 3g of gallic acid, heat at 85°C for 3 hours, add 1.5g of aluminum sulfate, adjust the p...

example 3

[0030] (1) Add 82.5g of water, 1.2g of sodium dodecylbenzenesulfonate, 0.6g of fatty alcohol polyoxyethylene ether, and 2.3g of acrylic acid into a 500ml three-neck flask, heat up to 45°C, stir for 45min, and add monomer A , emulsified for 50 minutes, raised the temperature to 75°C, passed reflux water, raised the temperature to 80°C, and added dropwise 5.7g of azobisisobutylimidazoline hydrochloride solution dissolved in 5g of water, and added dropwise for 1.5h, and reacted for 2h after the dropwise addition. Obtain the core layer emulsion;

[0031] The A monomer is formed by mixing 9 g of butyl acrylate, 6 g of methyl methacrylate, 6 g of ethyl acrylate, and 0.6 g of styrene;

[0032] (2) Add monomer B and 4.6 g of azobisisobutylimidazoline hydrochloride solution dissolved in 4 g of water to the core layer emulsion obtained in step (1) at the same time, drop for 2 hours, and keep the temperature at 80°C for 2 hours. Add 2.3g of rutin, keep it warm at 80°C for 2 hours, add 1...

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Abstract

The invention relates to a preparation method of a light-resistant and waterproof coating. Add water, emulsifier, and acrylic acid, heat up to 45°C, stir for 45 minutes, add A monomer, emulsify for 40-60 minutes, heat up to 75°C, pass back water, and heat up to Insulate at 80°C, add the initiator dropwise, and react for 2 hours to obtain a core layer emulsion; add B monomer and initiator dropwise to the obtained core layer emulsion at the same time, dropwise for 1~3h, and keep the temperature for 2 hours at 75~85°C after the dropwise addition , plus 10~20 parts by weight of light-resistant material, heat preservation reaction at 75~85°C for 1~3h, then add 0.5~1.0 weight part of metal salt, adjust pH to 4.0, heat preservation reaction time at 75~85°C for 1~2h, cool down to 50 ℃, add 0.2 parts by weight of cross-linking agent, react for 30 minutes, add 0.3 parts by weight of organosilicon and 0.1 parts by weight of acetanilide, react for 60 minutes, add ammonia to adjust the pH value to 5, and obtain the light-resistant and waterproof coating. Acrylic resin has good light resistance and water resistance, and the production process is environmentally friendly.

Description

Technical field [0001] The present invention involves a method of preparation of a coating, which specializes in a preparation method for light -resistant and waterproof coatings. Background technique [0002] Acrylic emulsion coatings are the most widely used type of emulsion coatings. It can be applied to the construction industry for internal and external wall coatings and roof waterproof materials, but also can be used in the textile industry as fabric coating agents and made in the leather industryThe leather coating agent can also be used in metal, wood coatings, road labeling coatings, paper and textile adhesives.However, because the fields used are often exposed to sunlight, because the solar light contains a large number of ultraviolet light that is harmful to non -ferrous objects, its wavelength is about 290 ~ 460nm. These harmful ultraviolet light through chemical oxidation effects make the color changes in the color changes in the paint colors.It affects the appearanc...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D151/00C09D5/00C09D7/12C08F291/06C08F220/14C08F220/18C08F212/08C08F220/06C08F210/02C08F214/26C08F230/08C08J3/24
Inventor 陆浩然何锦华钟标
Owner FOSHAN SHUNDE HESHENG CHEMICAL INDUSTRIAL CO LTD
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