Patent ID: 7282544

Claim:
A process for the polymerization of propylene comprising: a) introducing propylene and a polymerization catalyst into a polymerization reactor; b) operating said polymerization under conditions effective to polymerize propylene in the presence of said catalyst to produce a propylene polymer in a liquid polymerization medium; c) introducing into said polymerization medium an anti-fouling agent comprising a cyclohexane containing solvent having an anti-fouling polymer having i) at least one polymer block characterized by the formula —(CH 2— CH 2— O) k — wherein k is within the range of 1-50; and ii) at least one polymer block characterized by the formula —(CH 2— CH (R)—O) n — wherein R comprises an alkyl group having from 1-6 carbon atoms and n is within the range of 1-50; wherein said copolymer is terminated by end groups R′ and R″, R′ is OH or a C 1 -C 6 alkoxy group and R″ is H or a C 1 -C 6 alkyl group; and d) recovering a propylene polymer from said polymerization reactor.