Internally coated reaction vessel for use in olefinic...

Details Internally coated reaction vessel for use in olefinic... Internally coated reaction vessel for use in olefinic...

C - Chemistry, Metallurgy

08

F

402/397, 23/431,

C08F 2/18 (2006.01) B01J 3/04 (2006.01) C08F 2/00 (2006.01) C08F 14/06 (2006.01)

Patent

CA 1116347

ABSTRACT OF THE DISCLOSURE This invention relates to a polymerization reaction vessel having a coating on the inner surfaces thereof re- sulting from applying thereto a coating composition contain- ing, as a primary ingredient, an alkali soluble dye dissolved in an aqueous alkali metal hydroxide solution or an ammonium hydroxide solution. When polymerizing olefinic monomers, such as vinyl halides, vinylidene halides, and vinylidene monomers having at least one terminal CH2=C< grouping, and mixtures thereof, in the presence of said coating, polymer build-up on the inner surfaces of the reaction vessel is substantially eliminated. Further, multiple charges or patches of polymer can be made in said internally coated reaction vessel without opening the same between charges thus preventing the escape of unreacted monomer to the at- mosphere.

285726

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