A method for the preparation in the poly - e - caprolactones method and poly - e - caprolactones with a high molecular weight

摘要

Poly-epsilon-caprolactones are manufactured by continuous polymerization of epsilon-caprolactone as a melt in an extruder (reactive extrusion) with the intervention of a polymerization initiator chosen from aluminum alkoxides. The proper setting of the extruder feed rates of epsilon-caprolactone and aluminum alkoxide allows the manufacturing of poly-epsilon-caprolactones having average molecular weight and high pre-established. Poly-epsilon-caprolactones obtainable by the process are characterized by weight average molecular weight (Mw) equal to at least 95000 g / mol and about Mw / Mn ratios at least equal to about 2.