Coating polymerization reactors with the reaction products...

Details Coating polymerization reactors with the reaction products... Coating polymerization reactors with the reaction products...

B - Operations, Transporting

01

J

402/396, 23/431,

B01J 19/00 (2006.01) C08F 2/00 (2006.01) C08F 14/06 (2006.01)

Patent

CA 1147098

ABSTRACT OF THE DISCLOSURE This invention relates to a polymerization reaction vessel having a coating on the inner surfaces thereof resulting from applying thereto an aqueous coat- ing composition containing the reaction product of a thiodiphenol, or a derivative thereof, with a bleaching agent or material, such as, for example, sodium hypo- chlorite (NaOCl). When polymerizing olefinic monomers, such an vinyl halides, vinylidene halides, and vinyli- dene monomers having at least one terminal CH2=C < group, and mixtures thereof, polymer buildup on the inner surfaces of the reaction vessel is substantially reduced. Multiple charges or batches of polymer can be made in said internally coated reaction vessel without opneing the same between charges thus preventing the escape of unreacted monomer(s) to the surrounding atmosphere.

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