发明名称 |
POLY(ESTER-URETHANE), PRODUCTION METHOD THEREFOR, CYCLIC (ESTER-URETHANE)OLIGOMER, AND PRODUCTION METHOD THEREFOR |
摘要 |
PROBLEM TO BE SOLVED: To provide a biodegradable and chemically recyclable poly(ester-urethane) and to provide a method for producing the poly(ester-urethane) by a low environmental load process. SOLUTION: What is provided is: a poly(ester-urethane) comprising repeating units each represented by formula (1) (wherein x is an integer of 2 to 10; y is 2 or 3; and z is an integer of 2 to 6); a method for producing the poly(ester-urethane) comprising polymerizing a diurethanediol with a dialkyl dicarboxylate in the presence of a hydrolase in an organic solvent; a cyclic (ester-urethane) oligomer represented by formula (4) (wherein m is an integer of 1 to 8); a method for producing a poly(ester-urethane) comprising polymerizing the oligomer; and a method for producing the oligomer comprising depolymerizing the poly(ester-urethane). COPYRIGHT: (C)2006,JPO&NCIPI
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申请公布号 |
JP2006063103(A) |
申请公布日期 |
2006.03.09 |
申请号 |
JP20040243924 |
申请日期 |
2004.08.24 |
申请人 |
KEIO GIJUKU |
发明人 |
MATSUMURA SHUICHI;SOEDA YASUYUKI |
分类号 |
C08G71/04;C08G63/685;C08L101/16;C12P13/00 |
主分类号 |
C08G71/04 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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