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Full crylic acid ester copolymer latex having shell structure

An acrylate and butyl acrylate technology is applied in the field of all-acrylate copolymer emulsions, which can solve the problems of difficulty in film formation of all-acrylate emulsions and high water absorption of the emulsion dry film, and achieve the maintenance of decorative effects, reduction of water absorption, The effect of preventing double pollution

Inactive Publication Date: 2008-01-02
TIANJIN ZHENDONG PAINTS CO LTD
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AI Technical Summary

Problems solved by technology

[0002] The currently used all-acrylic emulsion is difficult to form a film at a high glass transition temperature, and there is a phenomenon that the dry film of the emulsion has a high water absorption rate, which makes it difficult for exterior wall coatings to overcome the double pollution of rainwater on the coating film by penetrating pollution and adsorption pollution question

Method used

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Examples

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Effect test

Embodiment

[0006] Example: a full acrylate copolymer emulsion with a shell structure, methyl methacrylate 22; butyl acrylate 8; N-methylol acrylamide 0.8; acrylic acid 0.3; Ethyl ester 0.2 to form A; sodium dodecylbenzene sulfonate 0.7; allyl hydroxypropyl sodium sulfonate 0.4 to form B; add A and B and part of water 46 into the emulsifier to form emulsified monomers, and then the remaining Part B and component water 46 are added to the reactor, and at a temperature of 80-90°C, within 1 hour, uniformly add tertiary vinyl carbonate, ethylene glycol dimethacrylate, (meth)acrylic acid, dodecyl The nuclear emulsion 21.4 of sodium alkylbenzenesulfonate and potassium persulfate was incubated for 10 minutes, then at the same temperature, the emulsified monomer and potassium persulfate 0.2 were evenly added to the reactor in 2 hours, and the addition was completed and incubated for 1 hour. Finally, cool down and neutralize the discharge with ammonia water.

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Abstract

The invention discloses an overall acrylate copolymer emulsion with carapace, which comprises the following steps: preparing the emulsifying monomer by adding methyl methacrylate, butyl acrylate, N-methylol acrylamide, acroleic acid, dimethyl-aminoethyl methacrylate, sodium dodecylbenzene sulfonate, sodium allyl hydroxypropyl sulphonate and water in the reactor; adding the nuclear emulsion with tertiary ethylene ester carbonate, dimethyl acroleic acid gylcol ester, (methyl)acroleic acid, sodium dodecylbenzene sulfonate and potassium peroxodisulfate; keeping the temperature for 10 minutes; putting emulsion monomer and potassium peroxodisulfate in the reactor in two hours; keeping the temperature for one hour; reducing the temperature; neutralizing with smmonia water; discharging the material. The invention reduces the specific absorption of the coating, which avoids rain-water double pollution, and keeps the decorative effect for a long time.

Description

technical field [0001] The invention relates to an all-acrylate copolymer emulsion with a shell structure. Background technique [0002] The currently used all-acrylic emulsion is difficult to form a film at a high glass transition temperature, and there is a phenomenon that the dry film of the emulsion has a high water absorption rate, which makes it difficult for exterior wall coatings to overcome the double pollution of rainwater on the coating film by penetrating pollution and adsorption pollution question. Contents of the invention [0003] The purpose of the present invention is to overcome the above-mentioned defects and provide a full acrylate copolymer emulsion with a shell structure. [0004] The technical scheme of the present invention is: a kind of full acrylate copolymer emulsion with shell structure, containing (meth)acrylic acid ester, hydrophilic functional monomer, emulsifier, initiator and water, initiator is potassium persulfate usually , is character...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/14C08F2/22C08F220/16C08F220/04
Inventor 张云波
Owner TIANJIN ZHENDONG PAINTS CO LTD
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