Internally coated reaction vessel for use in olefinic polymeriza

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

1977-06-20

1978-03-21

Dixon, Jr., William R.

Chemistry: physical processes

Physical processes

Crystallization

23288E, 427230, 427236, 427239, 428 35, 526 62, B01J 120

Patent

active

040801730

ABSTRACT:
This invention relates to a polymerization reaction vessel having a coating on the inner surfaces thereof resulting from applying thereto a coating composition containing, as a primary ingredient, (1) the self-condensation product of a polyhydric phenol, or (2) the condensation 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 polymerizing olefinic monomers, such as vinyl halides, vinylidene halides, and vinylidene monomers having at least one terminal CH.sub.2 .dbd.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.

REFERENCES:
patent: 3825434 (1974-07-01), Berens et al.
patent: 3849179 (1974-11-01), Morningstar
patent: 4007320 (1977-02-01), Peterson
patent: 4024301 (1977-05-01), Witenhafer et al.
patent: 4024330 (1977-05-01), Morningstar et al.

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