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Preparation method of light-resistant and waterproof paint

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

Inactive Publication Date: 2014-07-23
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 UV absorbers and antioxidants, but the traditional synthetic antioxidants include tert-butylhydroxyanisole, peroxide Hydrogen oxide tert-butyl, tert-butyl hydroquinone, etc., have relatively large toxic and side effects and carcinogenicity, and the traditional addition of silicone materials to improve water resistance is not effective, so it is necessary to find efficient and environmentally friendly waterproof, Lightfast Technology

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, dropwise for 2 hours, and react at 80°C for 2 hours. Add 2.3g of rutin, keep it warm at 80°C for 2 hours, add 1.1g of zirc...

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PUM

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Abstract

The invention relates to a preparation method of light-resistant and waterproof paint, which comprises the following steps: adding water, emulsifier and acrylate, heating to 45 DEG C, and stirring for 45 minutes; adding a monomer A, emulsifying for 40-60 minutes, and heating to 75 DEG C; introducing return water, heating to 80 DEG C, keeping the temperature, dropwisely adding initiator, and reacting for 2 hours to obtain a core layer emulsion; dropwisely adding a monomer B and the initiator into the obtained core layer emulsion simultaneously for 1-3 hours, then keeping the temperature at 75-85 DEG C, and reacting for 2 hours; adding 10-20 parts by weight of light-resistant material, keeping the temperature at 75-85 DEG C, and reacting at 1-3 hours; adding 0.5-1.0 part by weight of metal salt, regulating the pH value to 4.0, keeping the temperature at 75-85 DEG C, and reacting for 1-2 hours; cooling to 50 DEG C, adding 0.2 part by weight of crosslinking agent, and reacting for 30 minutes; adding 0.3 part by weight of organic silicon and 0.1 part by weight of acetanilide, and reacting for 60 minutes; and adding ammonia water to regulate the pH value to 5, thus obtaining the light-resistant and waterproof paint. The obtained acrylate resin has favorable light resistance and water resistance, and the production process is environment-friendly.

Description

technical field [0001] The invention relates to a method for preparing a coating, in particular to a method for preparing a light-resistant and waterproof coating. Background technique [0002] Acrylic emulsion paint is the most widely used type of emulsion paint. It can be used not only as interior and exterior wall paint and roof waterproofing materials in the construction industry, but also as a fabric coating agent in the textile industry and as a fabric coating agent in the leather industry. Leather finishing agent, but also can be applied to metal, wood coatings, road marking coatings, paper and textile adhesives, etc. However, due to the fact that the field of use is often exposed to sunlight, since the sun’s rays contain a large amount of ultraviolet light harmful to colored objects, its wavelength is about 290~460nm, these harmful ultraviolet light will change the color of the coating through chemical oxidation and reduction. , affecting the appearance of the coat...

Claims

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Application Information

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IPC IPC(8): C09D151/00C09D5/00C09D7/12C08F291/06C08F220/14C08F220/18C08F212/08C08F220/06C08F210/02C08F214/26C08F230/08C08J3/24
Inventor 段小宁
Owner FOSHAN SHUNDE HESHENG CHEMICAL INDUSTRIAL CO LTD
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