Resinous particles, method for production thereof, and uses...

Details Resinous particles, method for production thereof, and uses... Resinous particles, method for production thereof, and uses...

C - Chemistry, Metallurgy

08

L

C08L 33/00 (2006.01) A61K 8/04 (2006.01) A61K 8/81 (2006.01) A61Q 1/02 (2006.01) C08L 23/02 (2006.01) C09D 123/02 (2006.01) A61K 7/00 (1995.01)

Patent

CA 2098407

A polymerizable monomer (A) having as a main component thereof a (meth)acryl type monomer subjected to aqueous suspension polymerization in the presence of a compound (B) which is substantially insoluble in water and sparingly soluble in the polymerizable monomer (A). The compound (B) has two or more structural units selected from the group consisting of -SH, -S-S, -COOH, -NO2, and -OH. The use of compound (B), in the suspension polymerization of the (meth)acryl type monomer, represses of the production of by-produced minute particles due to sympathetic emulsion polymerization. The suspension polymerization permits production of (meth)acryl type polymer particles having high heat stability and a small range of particle diameters.

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