US PATENT SUBCLASS 585 / 517
.~.~ Plural serial polymerization stages

Current as of: June, 1999
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585 /   HD   CHEMISTRY OF HYDROCARBON COMPOUNDS

500  DF  UNSATURATED COMPOUND SYNTHESIS {14}
502  DF  .~ By addition of entire unsaturated molecules, e.g., polymerization, etc. {8}
517.~.~ Plural serial polymerization stages

DEFINITION

Classification: 585/517

Plural serial polymerization stages:

(under subclass 502) Subject matter wherein the effluent of a polymerization is sent to a further polymerization stage.

(1) Note. A mere recycle of unpolymerized portions of an effluent to the same polymerization zone does not indicate classification in this subclass.