Patent ID: 6013735
Filing Date: 2000-01-11
Classification: C08F,C08L,C10M,C10N

Abstract:
A continuous process for the anionic polymerization production of star-branched acrylic polymers comprising the steps of combining:(A) at least one acrylic monomer, and optionally at least one solvent, non-acrylic vinyl monomer and/or performance enhancing monomer, and(B) a mixture comprising an anionic polymerization initiator system, a core-forming monomer and optionally a solvent,in a tubular reactor, in a continuous manner, and contacting (A) and (B) for a time sufficient to react (A) and (B) to the desired conversion, wherein the temperature of the tubular reactor is maintained in the range of 30.degree. C. to -78.degree. C. and wherein a star-branched acrylic polymer having a polydispersity within the range of about 1 to about 2 is produced.