Polymer dispersions, processes for the preparation thereof...

Details Polymer dispersions, processes for the preparation thereof... Polymer dispersions, processes for the preparation thereof...

C - Chemistry, Metallurgy

08

L

C08L 33/06 (2006.01) C08F 2/30 (2006.01) C08K 5/06 (2006.01) C08L 25/02 (2006.01) C08L 71/00 (2006.01) C09D 5/02 (2006.01)

Patent

CA 2579987

Polymer dispersions containing at least two copolymers A and B in a weight ratio of from 5:95 to 95:5 are described, the glass transition temperatures T g of the copolymers A and B differing by at least 10°C, and at least one nonionic emulsifier from the group consisting of the aryl-substituted phenolalkyleneoxy ethers. From these polymer dispersions, it is possible to formulate, for example, coatings, glazes and paints for coating substrates of all types. The polymer dispersions are distinguished by a very good shear stability and can be applied in particular by spray application.

L'invention décrit des dispersions polymériques contenant au moins deux copolymères A et B selon un rapport de poids allant de 5:95 à 95:5, les températures de transition vitreuse T g des copolymères A et B inscrivant une différence d'au moins 10 degrés celcius, et au moins un émulseur non ionique du groupe composés d'éthers de phénolalkylénéoxyde de substitution d'aryle. € partir de ces dispersions polymériques, il est possible de formuler, par exemple, des revêtements, des agents de glaçage et des peintures pour le revêtement de substrats de tous types. Les dispersions polymériques se distinguent par une très bonne stabilité au cisaillement et peuvent être appliquées en particulier par pulvérisation.

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