Invention Grant
- Patent Title: Polycarbonate containing plant-derived component and process for the preparation thereof
- Patent Title (中): 含有植物衍生成分的聚碳酸酯及其制备方法
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Application No.: US12600435Application Date: 2008-05-14
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Publication No.: US08017722B2Publication Date: 2011-09-13
- Inventor: Akimichi Oda , Eiichi Kitazono , Toshiyuki Miyake , Masami Kinoshita , Mizuho Saito
- Applicant: Akimichi Oda , Eiichi Kitazono , Toshiyuki Miyake , Masami Kinoshita , Mizuho Saito
- Applicant Address: JP Osaka
- Assignee: Teijin Limited
- Current Assignee: Teijin Limited
- Current Assignee Address: JP Osaka
- Agency: Sughrue Mion, PLLC
- Priority: JP2007-131701 20070517; JP2007-131702 20070517; JP2007-131703 20070517; JP2007-131704 20070517
- International Application: PCT/JP2008/059296 WO 20080514
- International Announcement: WO2008/143269 WO 20081127
- Main IPC: C08G64/00
- IPC: C08G64/00 ; C08G63/02
Abstract:
A process for production of a plant-derived component-containing polycarbonate represented by the following formula (3): (wherein R1-R4 each independently represent a group selected from among hydrogen, alkyl, cycloalkyl and aryl, and n is the number of repeating units), by melt polycondensation using as the starting materials a specified diol, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography, and a specified carbonic acid diester, having a total content of Na, Fe and Ca of no greater than 2 ppm and a purity analysis value of at least 99.7% by gas chromatography.
Public/Granted literature
- US20100160601A1 POLYCARBONATE CONTAINING PLANT-DERIVED COMPONENT AND PROCESS FOR THE PREPARATION THEREOF Public/Granted day:2010-06-24
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