发明授权
- 专利标题: Oxytetramethylene glycol copolymer and process for producing the same
- 专利标题(中): 氧四亚甲基二醇共聚物及其制备方法
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申请号: US10250859申请日: 2001-04-16
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公开(公告)号: US07217783B2公开(公告)日: 2007-05-15
- 发明人: Tamotsu Kodama , Toshihiko Fukuzono , Satoshi Furubeppu
- 申请人: Tamotsu Kodama , Toshihiko Fukuzono , Satoshi Furubeppu
- 申请人地址: JP Osaka
- 专利权人: Asahi Kasei Kabushiki Kaisha
- 当前专利权人: Asahi Kasei Kabushiki Kaisha
- 当前专利权人地址: JP Osaka
- 代理机构: Finnegan, Henderson, Farabow, Garrett, & Dunner, L.L.P.
- 优先权: JP2001-003810 20010111; JP2001-003899 20010111
- 国际申请: PCT/JP01/03230 WO 20010416
- 国际公布: WO02/055586 WO 20020718
- 主分类号: C08F6/10
- IPC分类号: C08F6/10 ; C08J3/02
摘要:
An oxytetramethylene glycol copolymer obtained by copolymerizing tetrahydrofuran and neopentyl glycol which has a specific number average molecular weight Mn, a specific molecular weight distribution Mw/Mn, a specific neopentyl glycol copolymerization whole ratio Nw and a specific neopentyl glycol copolymerization partial ratio Nh; a method for producing the same; and a method for purifying an oxytetramethylene glycol copolymer using fresh tetrahydrofuran.
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