Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
March 10, 2009
0Patent Application Number
115883410
Date Filed
October 27, 2006
0Patent Primary Examiner
Patent abstract
For producing an aliphatic polyester resin composition containing a thermal stabilizer and a carboxyl group-capping agent, the aliphatic polyester resin is first mixed in a hot-melt state with the thermal stabilizer and then mixed in a hot-melt state with the carboxyl group-capping agent. As a result thereof, the resultant aliphatic polyester resin composition is provided with better moisture resistance and noticeably improved heat resistance (less coloring) than in the case where these additives are simultaneously added to effect the hot-melt mixing.
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