B - Operations – Transporting – 01 – J
Patent
B - Operations, Transporting
01
J
B01J 13/14 (2006.01) C08F 265/06 (2006.01)
Patent
CA 2073154
ABSTRACT OF THE INVENTION Redispersible polymer powders made by core-shell polymers hVING an alkali-soluble emulsion polymer shell and an aqueous-insoluble emulsion polymer core wherein the core and the shell polymers are chemically grafted by utilizing a polyfunctional compound. The core-shell polymers are produced by a two-stage sequential emulsion polymerization process in which an alkali-insoluble emulsion polymer core is polymerized in the presence of an alkali-solubilized emulsion polymer. When the core-shell polymer powders of this invention are employed as a cement modifier, improvements in the powder physical properties and cement mortar properties are realized.
Chiou Shang-Jaw
Papsin George Arthur Jr.
Tsai Min-Chi
Chiou Shang-Jaw
Gowling Lafleur Henderson Llp
Papsin George Arthur Jr.
Rohm And Haas Company
Tsai Min-Chi
LandOfFree
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