Dow Global Technolgoies LLC

Yafei Zhu

Margarita Perello

Robert Baumann

Hartmut Kuehn

Etienne Lazarus

Juergen Dombrowski

Gerold A Lohmuller

Juergen Dombroski

Gerald Adolf Lohmüller

Gerold Adolf Lohmueller

A water redispersible polymer powder is produced by drying an aqueous mixture of a high Tcarboxylated styrene butadiene polymer and a low Tcarboxylated styrene butadiene polymer, where the ratio of the mean or average particle size of the high Tpolymer to the particle size of the low Tpolymer is from 1:1 to 5:1, preferably from 1:1 to 3:1, and the amount of the high Tpolymer is from 20 wt. % to 35 wt. %, preferably from 25 wt. % to 30 wt. %, based upon the total weight of the high Tpolymer and the low Tpolymer. Cement compositions such as mortars, which contain the redispersible polymer powder exhibit unexpectedly superior high bond strength and high impact resistance.

Redispersible polymer powders prepared from blends of carboxylate

Growing community of inventors

Shanghai, China

Yafei Zhu