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

402/397, 23/431,

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

Patent

CA 1115899

ABSTRACT OF THE DISCLOSURE This invention relates to a polymerization reac- tion vessel having an approximate monolayer coating on the inner surfaces thereof which is obtained by applying thereto an aqueous coating solution containing a tannin, such as, for example, tannic acid. When polymerization olefinic monomers, such as vinyl halides, vinylidene halides, and vinylidene monomers having at least one terminal CH2=C< grouping, in such a coated reaction vessel, polymer build- up on the inner surfaces thereof is substantially eliminated. Multiple charges of polymer can be made in said coated vessel without opening the same between charges thus pre- venting the escape of unreacted monomer to the atmosphere. - 1 -

297768

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