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Contamination resistant acrylic ester emulsion

An acrylate and stain-resistant technology, applied in the field of stain-resistant all-acrylate emulsions, can solve the problems of high water absorption of the coating film, easy to be polluted by rainwater, poor decorative effect, etc., and achieve strong hydrophobicity, low water absorption, Maintain the effect of decorative effects

Inactive Publication Date: 2006-04-26
江苏日出化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the existing exterior wall coatings, which have high water absorption rate, are easily polluted by rainwater, become black and gray in a short period of time, and have poor decorative effects, and provide a new composition and content, a core-shell structure is formed by a hydrophobic soft core (Tg≤5°C) and a hydrophilic hard shell (Tg≥45°C), thereby reducing the water absorption of the coating, preventing double pollution by rainwater, and maintaining the stain resistance of the decorative effect for a long time All Acrylic Emulsion

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: The following components are prepared and numbered according to weight percentage: (1) methyl methacrylate 22; (2) butyl acrylate 8; (3) N-methylol acrylamide 0.8; (4) acrylic acid 0.3; (5) Dimethylaminoethyl methacrylate 0.2; (6) Sodium dodecylbenzene sulfonate 0.7; (7) Sodium allyl hydroxypropyl sulfonate 0.4; (8) Potassium persulfate 0.2 (9) Water 46; (10) Nuclear emulsion 21.4 containing vinyl tertiary carbonate, ethylene glycol dimethacrylate, (meth)acrylic acid, sodium dodecylbenzenesulfonate, and potassium persulfate. Combine components (1) to (5) into A, components (6) and (7) into B, add A, part B and part of component (9) into the emulsifier to emulsify the monomer, and then put the remaining Add B and component (9) into the reactor, at a temperature of 80-90°C, add component (10) evenly within 1 hour, keep the temperature for 10 minutes, then at the same temperature, mix the emulsified monomer and component ( 8) Evenly add to the reactor within...

Embodiment 2

[0020] Embodiment two: only change some components and contents in example one as follows: (1) methyl methacrylate 25; (2) butyl acrylate 5; (3) N-methylolacrylamide 1.0; (4) Acrylic acid 0.3; (5) diethylaminoethyl methacrylate 0.5; (6) sodium dodecylbenzene sulfonate 0.7; (7) allyl hydroxypropyl sodium sulfonate 0.4; (8) potassium persulfate 0.4; (9) water 43; (10) nuclear emulsification containing vinyl tertiary carbonate, (1.3 butanediol) dimethacrylate, (meth)acrylic acid, sodium dodecylbenzenesulfonate, potassium persulfate Liquid 23.7, the operation process is the same as above.

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PUM

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Abstract

The antifouling acrylate emulsion has hydrophilic functional monomer comprising amino acrylate, N-hydroxymethyl acrylamide and emulsifier composition of sodium dodecyl benzene sulfonate and sodium allyl hydroxypropyl sulfonate, as well as core emulsion comprising Veova and cross-linking monomer. The present invention has new components to form core-shell structure with hydrophobic soft core and hydrophilic hard shell, so that it has easy filming, low water absorption and reduced contamination. The emulsion of the present invention may be used as anticorrosive paint for outer wall and steel structure and can avoid contamination and reach excellent decorating effect.

Description

technical field [0001] The invention relates to an all-acrylate emulsion, in particular to a stain-resistant all-acrylate emulsion with a core-shell structure formed by a hydrophobic soft core (glass transition temperature Tg≤5°C) and a hydrophilic hard shell (Tg≥45°C). Background technique [0002] All-acrylate copolymer emulsions are mainly used as exterior wall coatings. At present, the all-acrylate emulsion used in China is mainly composed of (meth)acrylate, (meth)acrylic acid, emulsifier, initiator, pH regulator and water. Due to the influence of its components and content, it is difficult to form a film at a high glass transition temperature, so a lower glass transition temperature (Tg<30°C) is generally used, and there are more water-soluble substances such as emulsifiers, so There is a phenomenon of high water absorption rate of the dry film of the emulsion, which makes it difficult for the exterior wall coating to overcome the double pollution of rainwater on th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F20/10C08F2/26C08F4/30
Inventor 肖雪平
Owner 江苏日出化工有限公司
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