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Preparation method and formula of soap-free synthetic water-based acrylic dispersion resin

A water-based acrylic and dispersion technology, applied in the direction of coating, etc., can solve the problems of anti-adhesion, system instability, hardness, poor initial anti-adhesion grinding performance and flexibility, etc., and achieve excellent permeability and adhesion Focus on excellent effects

Pending Publication Date: 2020-11-03
广州市祥枫化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Improve the sandability and initial anti-adhesion of water-based outdoor wood coatings by grinding aids and wax emulsions or wax powders, respectively. More expensive, unstable system and inherently poor adhesion
Water-based outdoor wood coatings in the prior art have problems of poor hardness, initial blocking resistance, sanding performance and poor flexibility

Method used

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  • Preparation method and formula of soap-free synthetic water-based acrylic dispersion resin
  • Preparation method and formula of soap-free synthetic water-based acrylic dispersion resin
  • Preparation method and formula of soap-free synthetic water-based acrylic dispersion resin

Examples

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Embodiment

[0037] A kind of preparation method of soap-free synthetic waterborne acrylic acid dispersion resin, comprises the following steps:

[0038] S1. Add 250kg of deionized water to the reactor, stir at a speed of 25 rpm, add 0.33kg of emulsifier COPS-1, and rinse the emulsifier COPS-1 remaining in the container with 2.53kg of deionized water into the reactor, and then the reactor was heated to 75°C;

[0039] S2, the ammonium sulfate of crossing 0.11kg and the deionized water of 3.8kg are added initiator shot tank, the ammonium sulfate remaining in the container is rinsed in the reactor with the deionized water of 1.27kg, make initial initiator for subsequent use;

[0040] S3. Add 45.34kg of deionized water into the monomer tank, stir at a speed of 50 rpm, add 0.98kg of emulsifier COPS-1 to blend and disperse evenly;

[0041] S4, the acrylic acid of 18kg, the diacetone acrylamide of 7.29kg, the butyl acrylate of 53kg, the dimethyl ester of 78kg and the lauryl mercaptan of 2.92kg a...

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Abstract

The invention discloses a preparation method of soap-free synthetic water-based acrylic acid dispersion resin, which relates to the technical field of high polymer materials, the water-based resin hasa three-layer structure of a core, an interlayer and a shell; through the structural design of a hard core and a soft shell, the invention solves the problems that the water-based outdoor wood coating is difficult to have the high hardness, initial adhesion resistance and polishing property of the wood coating and also has the flexibility of the outdoor wood coating. The preparation method is characterized by comprising the following steps: preparing pre-emulsified liquid; adding the pre-emulsified liquid; adding an initiator, an initiator (2) and a catalyst; adding an oxidant, a reducing agent, a pre-emulsified liquid (2), a cross-linking agent, a bactericide and a solid content regulator; and filtering the mixture. The average particle size of the water-based resin reaches 35 nanometersor below, the water-based resin is high in hardness, high in adhesion resistance and excellent in polishing performance and has the characteristic of low-temperature film forming, the hardness, the water resistance, the adhesive force, the gloss and the like are improved, and the advantages of being good in hardness, initial-stage adhesion resistance, polishing performance and flexibility are achieved.

Description

technical field [0001] The invention relates to the technical field of polymer materials, in particular to a preparation method and formula of a soap-free synthetic water-based acrylic dispersion resin. Background technique [0002] The outdoor and semi-outdoor resins used in water-based outdoor wood coatings in the prior art can solve the weather resistance, water resistance and flexibility of water-based outdoor wood coatings by adding additives in the later stage of the water-based outdoor wood coating application formula. question. However, on the existing water-based outdoor wood coatings, it is more difficult to give the water-based resin the sanding properties, initial blocking resistance and better adhesion that wood coatings possess. [0003] For example, the water-based outdoor wood coatings in the prior art improve the sandability by adding sanding aids, and improve the initial blocking resistance by adding wax emulsion or wax powder. Improve the sandability and...

Claims

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Application Information

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IPC IPC(8): C08F285/00C08F265/06C08F220/18C08F220/14C08F220/06C08F220/58C09D151/00
CPCC08F285/00C08F265/06C08F220/14C09D151/003C08F220/58C08F220/1808C08F220/06C08F220/1804
Inventor 曾杰
Owner 广州市祥枫化工科技有限公司
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