C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 105/00 (2006.01) B01J 19/02 (2006.01) C08F 2/00 (2006.01) C08K 5/46 (2006.01)
Patent
CA 2073090
ABSTRACT OF DISCLOSURE A polymer scale preventive agent for use in polymerization of a monomer having an ethylenically unsaturated double bond, comprising (A) a water-soluble basic polysaccharide and (B) a phenothiazine. The agent is used for forming a coating on the inner wall, etc. of a polymerization vessel, and highly safe for operators. Deposition of polymer scale can be effectively prevented, and polymeric product with high whiteness or a low initial coloration is obtained.
Shigemitsu Minoru
Shimizu Toshihide
Marks & Clerk
Shin-Etsu Chemical Co. Ltd.
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