Retardation of polymer buildup in monovinyl aromatic suspension

Details Retardation of polymer buildup in monovinyl aromatic suspension Retardation of polymer buildup in monovinyl aromatic suspension

1982-04-07

1984-03-20

Schofer, Joseph L.

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

Synthetic resins

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

C08J 926, C08J 928

Patent

active

044382421

ABSTRACT:
In the suspension polymerization of monovinyl aromatic polymers, detrimental polymer buildup on the internal surfaces of the reactor is reduced by contacting the internal surfaces of the reactor with sulfur trioxide. This means of retarding polymer buildup is particularly adaptable to suspension polymerization of lightly crosslinked styrene-divinyl benzene copolymer beads which may also contain acrylonitrile.

REFERENCES:
patent: 2837506 (1958-06-01), Myers et al.
patent: 4105841 (1978-08-01), Settiner et al.
patent: 4267291 (1981-05-01), Jones et al.
C. A. vol. 80, Entry 112493w, Duffan et al.

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