BULK REACTIVE EXTRUSION POLYMERIZATION PROCESS PRODUCING ALIPHATIC ESTER POLYMER COMPOSITIONS
Application 827/MAS/1997 published 2006-06-09, filed 1997-04-22
A bulk extrusion polymerization process to derive an aliphatic polyester from a suitable ester monomer, preferably e-caprolactone. Novel reaction formulations containing less than 100 ppm water and havig an acid value less than 0.5 mg KOH/g and preferably less than 0.2 mg KOH/g enable the polymerization of bulk monomer in an extruder in a resident time of less than 2 minutes. Different catalyst and initiator systems, processing protocols, and screw configurations lead to the preferred manufacture of poly(e-caprolactone) polymer of number average molecular ZHLJKW0R
Applicant
BOARD OF TRUSTEES
A CONSTITUTIONAL CORPORATION OPERATING MICHIGN STATE UNIVERSITY, EAST LANSING, MICHIGAN 48824., USA
Inventor
International Info
Classification: C08G 63/08
Publication Number:
Priority Information
08/639,198 US 1996-04-26