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...

B - Operations, Transporting

01

J

23/431, 117/70

B01J 19/02 (2006.01) C08F 2/00 (2006.01)

Patent

CA 1109342

ABSTRACT OF THE DISCLOSURE This invention relates to a polymerization reaction vessel having a coating on the inner surfaces thereof resulting from applying thereto a coating composi- tion containing, as a primary ingredient, (1) the self-con- densation product of a polyhydric phenol, or (2) the conden- sation product of two or more polyhydric phenols, or (3) the self-condensation product of a polyhydric naphthol, dissolved in an aqueous alkali metal hydroxide solution. When poly- merizing olefinic monomers, such as vinyl halides, vinyli- dene halides, and vinylidene monomers having at least one terminal CH2=C< group, 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 batches 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 surrounding atmosphere.

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