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公开(公告)号:US06177539B1
公开(公告)日:2001-01-23
申请号:US09531431
申请日:2000-03-20
申请人: Akihiro Oishi , Yoichi Taguchi , Ken-ichi Fujita , Yoshikazu Ikeda , Takashi Masuda , Yutaka Ishigami , Kazuo Nakayama , Shinichi Kinugasa , Hisae Nakahara
发明人: Akihiro Oishi , Yoichi Taguchi , Ken-ichi Fujita , Yoshikazu Ikeda , Takashi Masuda , Yutaka Ishigami , Kazuo Nakayama , Shinichi Kinugasa , Hisae Nakahara
IPC分类号: C08G1000
CPC分类号: C08G63/823 , C08G63/08
摘要: A process of producing a polyester or copolyester, wherein at least one cyclic lactone of the following formula (I): wherein n is an integer of 1-4 provided that n is not 2 when only one cyclic lactone is used, is polymerized under a pressure of at least 200 MPa in the absence of any catalyst or in the presence of a metal-free polyesterification catalyst.
摘要翻译: 一种生产聚酯或共聚酯的方法,其中至少一种下式(I)的环状内酯:其中n为1-4的整数,条件是当仅使用一个环状内酯时,n不为2,在 在不存在任何催化剂的情况下或在不含金属的聚酯化催化剂存在下,压力至少为200MPa。