Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Robert A. Green0
Chad Henry Kamann0
Jeffrey John Kolstad0
Date of Patent
May 22, 2012
Patent Application Number
12679365
Date Filed
September 26, 2008
Patent Primary Examiner
Patent abstract
PLA stereocomplex fibers are made by separately melting a high-D PLA starting resin and a high-L starting resin, mixing the melts and spinning the molten mixture. Subsequent heat treatment introduces high-melting “stereocomplex” crystallinity into the fibers. The process can form fibers having a high content of “stereocomplex” crystallites that have a high melting temperature. As a result, the fibers have excellent thermal resistance. The process is also easily adaptable to commercial melt spinning operations.
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