Process for the manufacture of poly-epsilon-caprolactones and poly-epsilon-caprolactones which have high molecular masses obtainable by this process

摘要

The poly- epsilon -caprolactones are manufactured by continuous polymerization of epsilon -caprolactone as a melt in an extruder (reactive extrusion) with the involvement of a polymerization initiator chosen from aluminum alkoxides. The appropriate adjustment of the extruder feed rates of epsilon -caprolactone and of aluminum alkoxide allows the customized manufacture of poly- epsilon -caprolactones which have high and preestablished weight-average molecular masses. Poly- epsilon -caprolactones obtainabled by the process are characterized by weight-average molecular masses (Mw) equal to at least approximately 95,000 g/mol and Mw/Mn ratios of at least approximately 2.