Redispersible, pulverulent core-shell polymers, their...

Details Redispersible, pulverulent core-shell polymers, their... Redispersible, pulverulent core-shell polymers, their...

C - Chemistry, Metallurgy

08

F

C08F 273/00 (2006.01) C04B 24/16 (2006.01) C04B 24/26 (2006.01)

Patent

CA 2168826

Redispersible, pulverulent core-shell polymers comprising a) a core polymer comprising from 80 to 100% by weight of monomers from the group of acrylates, if desired in combination with monomers from the group of styrenes, and from 0 to 20% by weight of ethyleni- cally unsaturated sulfonic acid compound and b) a shell polymer comprising from 60 to 95% by weight of monomers from the group of acrylates, if desired in combination with monomers from the group of styrenes, and from 5 to 40% by weight of ethyleni- cally unsaturated sulfonic acid compound, with the content of sulfonic acid compound in the shell being greater than the content of sulfonic acid compound in the core, and also their preparation and use as additives for hydraulic binders.

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