C - Chemistry – Metallurgy – 08 – L
Patent
C - Chemistry, Metallurgy
08
L
C08L 25/10 (2006.01) C04B 16/04 (2006.01) C04B 24/26 (2006.01) C08J 3/12 (2006.01)
Patent
CA 2741989
A water redispersible polymer powder is produced by drying an aqueous mixture of a high T g carboxylated styrene butadiene polymer and a low T g carboxylated styrene butadiene polymer, where the ratio of the mean or average particle size of the high T g polymer to the particle size of the low T g polymer is from 1:1 to 5:1, preferably from 1:1 to 3:1, and the amount of the high T g polymer is from 20wt.% to 35wt.%, preferably from 25wt.% to 30wt.%, based upon the total weight of the high T g polymer and the low T g polymer. Cement compositions such as mortars, which contain the redispersible polymer powder exhibit unexpectedly superior high bond strength and high impact resistance.
Baumann Robert
Dombroski Juergen
Kuehn Hartmut
Lazarus Etienne
Lohmuller Gerald Adolf
Dow Chemical (china) Company Limited
Dow Europe Gmbh
Dow Global Technologies Llc
Dow Olefinverbund Gmbh
Dow Stade Producktions Gmbh & Co. Ohg
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