Graft copolymer and process for making same

C - Chemistry – Metallurgy – 08 – K

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400/9040

C08K 3/00 (2006.01) C08F 2/44 (2006.01) C08F 292/00 (2006.01) C08K 5/09 (2006.01) C08L 57/00 (2006.01) C09C 3/10 (2006.01)

Patent

CA 1105178

TITLE: GRAFT COPOLYMER AND PROCESS FOR MAKING SAME ABSTRACT OF THE DISCLOSURE A reaction process and product obtained thereby, said process comprising reacting a polymerizable monomeric compound containing a polymerizably reactive vinyl group, such as methyl methacrylate, acrylonitrile, vinyl acetate, or the like, in an aqueous medium at a pH not greater than about 3.5 in the presence of a ceric salt which is soluble in at least one component of said medium, and an inorganic substrate, such as a clayey sub- strate, e.g., montmorillonite, or the like, capable of initiating polymerization of said monomeric compound, wherein said inorganic substrate is a reducing agent for said reaction. - 1 -

273850

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