Process for production of vinyl chloride polymer

Details Process for production of vinyl chloride polymer Process for production of vinyl chloride polymer

C - Chemistry, Metallurgy

08

F

402/397, 23/431,

C08F 14/06 (2006.01) C08F 2/00 (2006.01)

Patent

CA 1249099

ABSTRACT Process for production of vinyl chloride polymer This process is a process for production of a vinyl chloride polymer by suspension polymerization or emulsion polymerization of vinyl chloride monomer or a mixture of vinyl chloride monomer with a vinyl monomer copolymerizable with said vinyl chloride monomer in an aqueous medium, characterized in that the polymerization is carried out in a polymerizer, the inner wall surface and portions of the auxiliary equipment thereof which may come into contact with the monomer during polymeri- zation being previously coated with a scaling preventive comprising at least one selected from dyes, pigments and aromatic or heterocyclic compounds having at least 5 conjugated .pi. bonds, while controlling the chloride ion concentration in the reaction mixture to not higher than 100 ppm. According to said process, scaling onto the inner wall surface of a polymerizer, etc. during polymerization can be prevented effectively and surely.

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