Free-radical chain transfer polymerization process

Details Free-radical chain transfer polymerization process Free-radical chain transfer polymerization process

1997-03-21

1999-08-03

Henderson, Christopher

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

Synthetic resins

Polymers from only ethylenic monomers or processes of...

526 72, 526241, 526279, 5262921, 585428, C08F 238

Patent

active

059326751

ABSTRACT:
##STR1## A process for the production of polymers by free radical polymerization, characterized in that there is added to the polymerization system one or more compounds of general formula (A), where R.sup.1 is a group capable of activating the vinylic carbon towards free radical addition; Y is CH.sub.2 X(R.sup.2).sub.n, where R.sup.2 is an optionally substituted alkyl, optionally substituted alkenyl, optionally substituted alkynyl, or optionally substituted saturated or unsaturated carbocyclic or heterocyclic ring; X is an element other than carbon selected from the Groups, IV, V, VI or VII of the Periodic Table or a group consisting of an element selected from the Groups IV, V, or VI to which is attached one or more oxygen atoms; and n is a number from 0 to 3, such that the valency of the group X is satisfied and, when n is greater than 1, the groups represented by R.sup.2 are identical or different.

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