Invention Grant
- Patent Title: Aliphatic polyester resin and a process for producing it
- Patent Title (中): 脂肪族聚酯树脂及其制造方法
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Application No.: US13644802Application Date: 2012-10-04
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Publication No.: US08642717B2Publication Date: 2014-02-04
- Inventor: Tomokazu Kusunoki , Toshifumi Unrinin , Osamu Morimoto
- Applicant: Toyo Boseki Kabushiki Kaisha
- Applicant Address: JP Osaka
- Assignee: Toyo Boseki Kabushiki Kaisha
- Current Assignee: Toyo Boseki Kabushiki Kaisha
- Current Assignee Address: JP Osaka
- Agency: Wenderoth, Lind & Ponack, L.L.P.
- Priority: JP2008-190586 20080724
- Main IPC: C08G63/82
- IPC: C08G63/82 ; C08G79/02
Abstract:
The present invention is an aliphatic polyester resin in which a polyhydroxy acid skeleton is a main component, manufactured using a polymerization catalyst, characterized in that a specific organophosphorus compound is copolymerized in the resin. Activity of the polymerization catalyst contained in the aliphatic polyester resin of the present invention after the polymerization is well lowered and a lactide is hardly produced even by heating after the polymerization or after the manufacture.
Public/Granted literature
- US20130041127A1 ALIPHATIC POLYESTER RESIN AND A PROCESS FOR PRODUCING IT Public/Granted day:2013-02-14
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