Water-based emulsion polymers which resist blocking

Details Water-based emulsion polymers which resist blocking Water-based emulsion polymers which resist blocking

C - Chemistry, Metallurgy

08

F

C08F 2/22 (2006.01) C08F 212/04 (2006.01) C08F 220/12 (2006.01) C08L 57/04 (2006.01) C09D 5/02 (2006.01) C09D 143/04 (2006.01)

Patent

CA 2281529

This invention relates to emulsion polymers which have an excellent combination of blocking resistance, water spotting resistance and ethanol spotting resistance. These polymers are made from a monomer mixture including a monomer with a highly polar group which includes either a carboxylated or sulfonated monomer, or both, a monomer having a hydrolyzable silicone group, and a nonfunctional monomer which can be selected to provide a desired minimum film formation temperature. These emulsions polymers are useful in paint and coatings applications.

Cette invention a trait à des polymères en émulsion faisant montre d'une remarquable association de qualités de résistance au blocage, de résistance au maculage par l'eau et de résistance au maculage par l'alcool éthylique. On obtient ces polymères à partir d'un mélange de monomères contenant, d'une part, un monomère à groupe fortement polaire comportant, soit un monomère carboxylé ou un monomère sulfoné, soit les deux et, d'autre part, un monomère possédant un groupe silicone hydrolisable ainsi qu'un monomère non-fonctionnel, choisi pour son aptitude à offrir une température filmogène minimale désirée. Ces polymères en émulsion trouvent une application dans les domaines de la peinture et de l'enduisage.

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