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Styrene-acrylic emulsion for repainting primer and preparation method of styrene-acrylic emulsion

A technology of styrene-acrylic emulsion and primer, which is applied in the direction of coating, etc., can solve the problems that the primer cannot be directly used to pulverize the wall surface, change the loose surface strength of the substrate, etc., and achieve convenient and quick recoating, improved density, The effect of high permeability

Active Publication Date: 2017-05-10
成都巴德富科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The invention provides a styrene-acrylic emulsion for recoating primers and a preparation method thereof, which solves the problem that existing primers cannot be directly used for pulverized walls. The styrene-acrylic emulsion for recoating primers prepared by the invention has high Penetration performance, can penetrate into the deep layer of the loose substrate, and form a dense paint film after penetration, change the strength of the loose surface of the substrate, and provide a qualified substrate surface for decoration and repainting

Method used

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  • Styrene-acrylic emulsion for repainting primer and preparation method of styrene-acrylic emulsion
  • Styrene-acrylic emulsion for repainting primer and preparation method of styrene-acrylic emulsion

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preparation example Construction

[0039] A kind of preparation method of styrene-acrylic emulsion for recoating primer, is prepared by comprising the following steps carried out in sequence:

[0040] a. At room temperature, add 1.4-8 parts of emulsifier and 50-60 parts of water into the emulsification tank with a cross paddle, stir at a speed of 60-70 rpm, stir for 30 minutes to make it evenly mixed, Add 30-60 parts of styrene, 30-60 parts of butyl acrylate, 2-6 parts of methacrylic acid, 2-6 parts of acrylic acid, 2-6 parts of acrylamide and 0.2-1 part of cross-linking monomer in sequence under stirring at the same speed , 0.2-0.6 parts of chain transfer agent, stirred for 30 minutes to make it evenly mixed, and then the emulsion was prepared and set aside.

[0041] b. Add 0.6-2 parts of emulsifier and 40-50 parts of water into the reaction kettle, stir at 40-45 rpm for 30 minutes to mix evenly, raise the temperature to 85-87°C, and keep stirring during the whole heating process.

[0042] c. Dissolve 0.06-0....

Embodiment 1

[0057] A kind of preparation method of styrene-acrylic emulsion for recoating primer, is prepared by comprising the following steps carried out in sequence:

[0058] a. At room temperature, add 1.4 parts of potassium dodecyl phosphate and 50 parts of water into an emulsification tank with a cross paddle, stir at a speed of 60-70 rpm, and stir for 30 minutes to make it evenly mixed Finally, add 30 parts of styrene, 60 parts of butyl acrylate, 2 parts of methacrylic acid, 2 parts of acrylic acid, 2 parts of acrylamide, 0.2 parts of trimethylolpropane trimethacrylate, dodecane 0.2 part of base mercaptan, stirred for 30 minutes to make it evenly mixed, that is, an emulsion was prepared and set aside.

[0059] b. Add 0.6 parts of potassium dodecyl phosphate and 40 parts of water into the reaction kettle, stir at 40-45 rpm for 30 minutes to mix evenly, raise the temperature to 85°C, and keep stirring during the whole heating process.

[0060] c. Dissolve 0.06 part of ammonium persu...

Embodiment 2

[0067] A kind of preparation method of styrene-acrylic emulsion for recoating primer, is prepared by comprising the following steps carried out in sequence:

[0068] a. At room temperature, add 8 parts of emulsifier and 60 parts of water into the emulsification tank with a cross paddle, stir at a speed of 60-70 rpm, stir for 30 minutes to make it evenly mixed, then stir at the same speed Add 60 parts of styrene, 30 parts of butyl acrylate, 6 parts of methacrylic acid, 6 parts of acrylic acid, 6 parts of acrylamide, 1 part of crosslinking monomer, and 0.6 parts of dimercaptopropanol in sequence, and stir for 30 minutes to make it evenly mixed. That is, the emulsion is prepared and set aside.

[0069] b. Add 2 parts of emulsifier and 50 parts of water into the reaction kettle, stir at 40-45 rpm for 30 minutes to mix evenly, raise the temperature to 87°C, and keep stirring during the whole heating process.

[0070] c. Dissolve 0.3 part of potassium persulfate with 0.5 part of wa...

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Abstract

The invention discloses styrene-acrylic emulsion for repainting a primer and a preparation method of the styrene-acrylic emulsion, and belongs to the field of coating chemistry. The styrene-acrylic emulsion for repainting the primer is prepared from the following raw materials in parts by weight: 30 to 60 parts of styrene, 30 to 60 parts of butyl acylate, 2 to 6 parts of methacrylic acid, 2 to 6 parts of acrylic acid, 2 to 6 parts of acrylamide, 0.2 to 1 part of a cross-linking monomer, 2 to 10 parts of an emulsifier, 0.2 to 0.6 part of a chain transfer agent, 0.2 to 1.0 part of persulfate, 0.3 part of an oxidant, 0.3 part of a reducing agent and 95.5 to 115.5 parts of water, wherein the emulsifier is at least one of branched alkyl alcohol polyoxylethylene ether phosphate mono-ester, potassium dodecyl phosphate, allyl polyethenoxy ether, disodium polyoxyethylene sulfosuccinate and sodium alkylphenol ether sulfosuccinate. The styrene-acrylic emulsion for repainting the primer can be directly used for repainting of a painted wall.

Description

technical field [0001] The invention belongs to the field of paint chemical industry, and in particular relates to a styrene-acrylic emulsion for recoating primer and a preparation method thereof. Background technique [0002] With the vigorous development of the construction industry, architectural coatings have gradually become the main material for interior and exterior wall decoration of buildings. Before the coating is applied, an alkali-resistant sealing primer is usually applied to improve the adhesion strength between the base and the coating to ensure the durability and decorative effect of the coating by penetrating, anchoring and sealing the base. [0003] The patent application number is 201010022751.5 discloses a waterproof paint for construction, including the following components and weight percentage: cationic emulsion 40-60%, silicone adhesion promoter 0.5-1.0%, defoamer 0.1-0.5% , 0.01-0.3% fungicide, 1-5% film-forming agent, 0.5-5% thickener, and the bala...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F212/08C08F220/06C08F220/56C08F230/08C08F222/14C08F222/38C08F2/26C08F2/30C08F4/40C09D133/08C09D125/14
CPCC09D125/14C09D133/08C08F2/26C08F2/30C08F4/40C08F212/08C08F220/18C08F220/1804C08F220/06C08F220/56C08F222/385C08F230/08C08F222/103
Inventor 唐兵龚博文魏世辕罗云
Owner 成都巴德富科技有限公司
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