Method for the polymerization of vinyl monomers

Details Method for the polymerization of vinyl monomers Method for the polymerization of vinyl monomers

C - Chemistry, Metallurgy

08

F

402/303, 402/396

C08F 2/00 (2006.01) C08F 12/08 (2006.01) C08F 14/00 (2006.01)

Patent

CA 1102489

ABSTRACT OF THE DISCLOSURE A method for polymerizing a vinyl monomer in a polymerization reactor is provided. The inner walls of the polymerization reactor and other surfaces come into contact with the monomer and are coated with an aqueous liquid containing at least one alkali metal or ammonium salt of an anionic dye of the sulfonic carboxylic acid form and having a pH value adjusted not to exceed 7 by aid of a pH adjusting agent. The thus coated surfaces are dried with heat before the polymerization is conducted. The method serves to reduce the deposition of polymer scale on those sur- faces and, consequently, improves the productivity as well as the quality of polymer product.

295029

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