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Preparation method of light resistant core-shell type water-based acrylic ester type resin paint and coating agent

A technology of water-based acrylic and ester resins, applied in the direction of coating, etc., can solve the problems of production equipment, production process and production scale gap, and achieve the effect of short preparation time and high efficiency

Inactive Publication Date: 2019-03-26
段瑶瑶
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Although the paints currently used in China are still medium and low-grade, the variety of acrylic paints in China is relatively complete. Compared with developed countries, the gap is not in the variety of paints, but in the raw materials, production equipment, production technology and production scale.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] A kind of preparation method of lightfast core-shell type waterborne acrylic resin coating and finishing agent, it is characterized in that:

[0021] (1) Preparation of photoinhibitor: weigh 0.0337g of 2,2'-bipyridyl, 0.043g of phenylphosphonic acid, 0.0428g of anhydrous copper sulfate, 0.3542g of sodium molybdate, and 0.24g of trimethyl orthoformate , 0.03125g of 2-methoxy-4-methylphenol and 0.0027g of substance B were placed in a 50mL airtight container, then 15g of distilled water was added, the reaction was stirred for 40min, the pH was adjusted to 5, and the reaction was stirred at 75°C for 12h. The temperature was lowered to 40°C and naturally cooled, and the bulk crystal was obtained by suction filtration to obtain the photoinhibitor.

[0022] (2) Add the following raw materials in a 500ml three-necked flask by weight: 40g water, 0.6g emulsifier, 0.6 g methacrylic acid, heat up to 40°C, stir for 30min, add A monomer, emulsify for 30min; heat up to 70°C Start to ...

Embodiment 2

[0030] A kind of preparation method of lightfast core-shell type waterborne acrylic resin coating and finishing agent, it is characterized in that:

[0031] (1) Preparation of photoinhibitor: weigh 0.0337g of 2,2'-bipyridyl, 0.043g of phenylphosphonic acid, 0.0428g of anhydrous copper sulfate, 0.3542g of sodium molybdate, and 0.24g of trimethyl orthoformate , 0.03125g of 2,6-dimethoxyphenol and 0.0027g of substance B were placed in a 50mL airtight container, then 15g of distilled water was added, the reaction was stirred for 80min, the pH was adjusted to 5, the reaction was stirred at 90°C for 22h, and the temperature was lowered to Cool naturally at 40°C, filter with suction to obtain blocky crystals, and obtain the photoinhibitor.

[0032] (2) Add the following raw materials into a 500ml three-neck flask by weight: 60g water, 1.5g emulsifier, 1.0g methacrylic acid, heat up to 50°C, stir for 30min, add A monomer, emulsify for 40min; heat up to 70°C ℃, start to flow back wate...

Embodiment 3

[0040] A kind of preparation method of lightfast core-shell type waterborne acrylic resin coating and finishing agent, it is characterized in that:

[0041] (1) Preparation of photoinhibitor: weigh 0.0337g of 2,2'-bipyridyl, 0.043g of phenylphosphonic acid, 0.0428g of anhydrous copper sulfate, 0.3542g of sodium molybdate, and 0.24g of trimethyl orthoformate , 0.03125g of 3,3-dimethacrylic acid and 0.0027g of substance B were placed in a 50mL airtight container, then 15g of distilled water was added, the reaction was stirred for 60min, the pH was adjusted to 5, the reaction was stirred at 80°C for 17h, and the temperature was lowered to 40°C Naturally cool at ℃, filter with suction to obtain massive crystals, and obtain the photoinhibitor.

[0042] (2) Add the following raw materials into a 500ml three-neck flask by weight: 50g water, 1.0g emulsifier, 0.8g methacrylic acid, heat up to 45°C, stir for 30min, add A monomer, emulsify for 35min; heat up to 70°C ℃, start to flow bac...

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PUM

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Abstract

The invention discloses a preparation method of a light resistant core-shell type water-based acrylic ester type resin paint and coating agent. The following raw materials in proportion by weight: water, emulsifying agents and methacrylic acid are added into a 500ml flask with three necks; the temperature is raised to 40 to 50 DEG C; stirring is performed for 30min; monomers A are added; emulsification is performed for 30 to 40min; the temperature is raised to 70 DEG C; backflow water starts to be introduced; after the temperature is raised to 80 DEG C, heat insulation is performed for 2h; 0.2to 0.4g of initiators (6g of water is used for dissolution) are dropwise added; the dropwise adding time lasts 30 to 70 min; after the dropwise addition is completed, reaction is performed for 2h; core layer emulsion is obtained; the monomers B and 0.2 to 0.5g of initiators (6g of water is used for dissolution) are dropwise added into the obtained core layer emulsion at the same time, and the dropwise adding time lasts 40 min; after the dropwise addition is completed, heat insulation is performed for 85 to 95 DEG C; stirring reaction is performed for 1 to 2h; at the temperature, 0.4g of emulsifying agents and 0.1 to 0.3g of cross-linking agents and photoinhibition fixatives are added; the reaction is performed for 40min; ammonium hydroxide is added for regulating the pH value to 7 to 8; the light resistant core-shell type water-based acrylic ester type resin paint and coating agent. The obtained paint and coating agent has high light resistant performance.

Description

technical field [0001] The invention belongs to the field of water-based acrylic resin coatings, and in particular relates to a preparation method of a light-resistant core-shell type water-based acrylic resin coating and a finishing agent. Background technique [0002] The variety of acrylic resins in China has been relatively complete, but compared with foreign advanced counterparts, there is still a certain gap in production scale, process control and some products with special performance requirements. [0003] China's architectural coatings account for 24% of acrylic coatings, which is at the middle level of development in the world. At present, China's annual output is about 500,000 tons, of which interior walls account for 60%, exterior walls account for 25%, and others account for 15%. [0004] Although the paints currently used in China are still medium and low-grade, the variety of acrylic paints in China is relatively complete. Compared with developed countries, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D187/00C09D7/63C08G81/02C08F220/18C08F220/14C08F220/56C08F220/20C08F220/06C08F218/08C08F216/34
CPCC08F218/08C08F220/18C08F220/1804C08G81/021C09D7/63C09D187/005C08F216/34C08F220/56C08K5/06C08F220/14C08F220/20C08F220/06
Inventor 段瑶瑶李宁张萌萌
Owner 段瑶瑶
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