The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 21, 1995
Filed:
Apr. 29, 1994
Henri Wautier, Braine-le-Comte, BE;
Solvay (Societe Anonyme), Brussels, BE;
Abstract
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 (M.sub.w) equal to at least approximately 95,000 g/mol and M.sub.w /M.sub.n ratios of at least approximately 2.