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

1984-09-11

1987-04-21

Silverberg, Sam

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Polymerizing in reactor of specified material, or in reactor...

526 74, C08F 224

Patent

active

046597913

ABSTRACT:
A method of preventing or retarding polymer build-up on the internal surfaces of polymerization reactors is provided by this invention. Reduced build-up in vinyl chloride polymerization is obtained by having a phenolic compound coated on the internal surfaces of the reactor vessel and a water phase polymerization inhibitor either combined with the phenolic coating or added to the aqueous polymerization medium. Optionally, a chelating agent is also added with the water phase inhibitor. The process is further enhanced by the presence of water soluble dispersants such as polyvinyl alcohol and methyl cellulose.

REFERENCES:
patent: 3726910 (1975-12-01), Moudood
patent: 3778423 (1973-12-01), Rieber
patent: 4035563 (1977-07-01), Tachibana
patent: 4182808 (1980-01-01), Hong
patent: 4320215 (1982-03-01), Yonezawa
patent: 4420591 (1983-12-01), Wenpl

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