PRODUCTION OF POLY-EPSILON-CAPROLACTONE, AND HIGH-MOLECULAR-WEIGHT POLY-EPSILON-CAPROLACTONE OBTAINABLE THEREBY

Title:

PRODUCTION OF POLY-EPSILON-CAPROLACTONE, AND HIGH-MOLECULAR-WEIGHT POLY-EPSILON-CAPROLACTONE OBTAINABLE THEREBY

Document Type and Number:

Japanese Patent JPH0753686

Kind Code:

A

Abstract:

PURPOSE: To produce poly--caprolactones having various wt. average mol.wts., including one having a very high mol.wt., in a very high efficiency by continuously polymerizing -caprolactone in the molten state in an extruder while using a specific polymn. initiator.

CONSTITUTION: The objective polymer is obtd. by continuously polymerizing -caprolactone in the molten state in an extruder while using an aluminum alkoxide (pref. aluminum triisopropoxide) as a polymn. initiator. Pref., the polymn. is conducted at 130-180°C for an average dwell time of 15 min or less with an extruder having two screws rotating together. Pref., the resultant polymer is a homopolymer of -caprolactone having a wt. average mol.wt. of 115,000-200,000 and a ratio of Mw/Mn of 2.2 or higher.

Inventors:

ANRI BUOOTEIEERU

Application Number:

JP10146094A

Publication Date:

February 28, 1995

Filing Date:

May 17, 1994

Export Citation:

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Assignee:

SOLVAY

International Classes:

C08G63/78; C08G63/82; C08G63/08; C08G63/84; (IPC1-7): C08G63/08; C08G63/84

Attorney, Agent or Firm:

Minoru Nakamura (6 outside)

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