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Crosslinked acrylic emulsion for waterproofing paints and preparation method thereof

A technology of acrylic emulsion and waterproof coating, applied in the direction of coating, etc., can solve the problems of poor retarding ability and poor substrate adhesion, and achieve the effect of strong retarding ability, strong adhesion and high cross-linking density

Active Publication Date: 2013-02-06
WEIFANG HUANYU PAINT IND
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

In acrylic waterproof coatings, polymer emulsion is the key to the quality of waterproofing projects. The waterproof coatings currently on the market are simple mixtures of polymers and cement or other fillers, which do not form a cured film, have poor adhesion to the substrate, and are compatible with cement. The problem of poor retarding ability

Method used

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Embodiment Construction

[0025] Below in conjunction with embodiment, further set forth the present invention. In the following detailed description, certain exemplary embodiments of the invention are described by way of illustration only. Needless to say, those skilled in the art would realize that the described embodiments can be modified in various different ways, all without departing from the spirit and scope of the present invention. Accordingly, the description is illustrative in nature and not intended to limit the scope of the claims.

[0026] Take the production of one ton of cross-linked waterproof coating acrylic emulsion as an example:

[0027] The weight ratio of each component is prepared, the butyl acrylate is 35%, the styrene is 15%, the methylol acrylamide is 1%, the diacetone acrylamide is 1.5%, the emulsifier of sodium vinyl ether sulfonate 2.4%; 0.25% of the ammonium persulfate, 0.07% of the caproic acid dihydrazide, 0.3% of the defoamer, 44.48% of the water, and an appropriate ...

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Abstract

The invention discloses a crosslinked acrylic emulsion for waterproofing paints, which comprises the following components in percentage by weight of the emulsion: 35-40% of butyl acrylate, 10-15% of styrene, 0.5-1% of hydroxymethyl acrylamide, 1.0-1.5% of diacetone-acryloamide, 1-3% of emulsifier, 0.2-0.5% of persulfate, 0.05-0.08% of adipic dihydrazide, 0.3% of defoamer, 40-50% of water and neutralizer, wherein the use amount of neutralizer is enough for adjusting the pH value of the emulsion to 6.5-7.5. According to the invention, hydroxymethyl acrylamide and diacetone-acryloamide are used as crosslinking monomers and adipic dihydrazide serves as a curing agent; and after being crosslinked and cured, a paint film is high in crosslinking density and excellent in adhesion to a cement base material. The crosslinked acrylic emulsion has the advantages of high crosslinking density, strong adhesion, high film strength, excellent cement coagulation delaying capability and is applicable to both single-component and double-component waterproofing paints.

Description

technical field [0001] The invention relates to a building coating, in particular to a cross-linked waterproof coating acrylic emulsion, and also relates to a preparation method of the emulsion. Background technique [0002] Acrylic waterproof coating is a building waterproof coating made by adding cement or other fillers and additives based on acrylate and other polymer emulsions. By adjusting the proportion of each component in the emulsion, different engineering requirements can be met. In acrylic waterproof coatings, polymer emulsion is the key to the quality of waterproofing projects. The waterproof coatings currently on the market are simply mixed with polymers and cement or other fillers, which will not form a cured film, have poor adhesion to the substrate, and are compatible with cement. The problem of poor retarding ability. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a cross-linked waterproof acr...

Claims

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Application Information

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IPC IPC(8): C09D133/08C08F220/18C08F212/08C08F220/58C08F2/24
Inventor 宫献银
Owner WEIFANG HUANYU PAINT IND
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