发明名称 |
BIODEGRADABLE MATERIAL AND METHOD FOR PRODUCING BIODEGRADABLE MATERIAL |
摘要 |
The present invention aims to provide a biodegradable material having an enhanced shape recovery rate after deformation of the material and an improved flexibility. The present invention provides a biodegradable material which is a chemically cross-linked product between a multivalent compound A having 3 or more functional groups X such as hydroxyl group; and a multivalent compound B having 3 or more functional groups Y such as carboxyl group wherein chemical cross-linkage(s) is/are formed by condensation reaction of the functional group(s) X and the functional group(s) Y; wherein the value of (y + z)/(x + z) is 1.2 to 4.0 when MA ‰¥ MB, and the value of (x + z)/(y + z) is 1.2 to 4.0 when MA < MB; wherein x represents the number of the functional group(s) X which is/are not condensed with the functional group(s) Y; y represents the number of the functional group(s) Y which is/are not condensed with the functional group(s) X; z represents the number of the cross-linkage(s); MA represents the weight average molecular weight of the multivalent compound A; and MB represents the weight average molecular weight of the multivalent compound B. |
申请公布号 |
EP2832380(B1) |
申请公布日期 |
2016.11.30 |
申请号 |
EP20130768529 |
申请日期 |
2013.03.28 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
FUJITA, MASAKI;NAKANISHI, MEGUMI;TANAHASHI, KAZUHIRO |
分类号 |
A61L31/14;A61L15/64;A61L24/00;C08G63/08;C08G63/668;C08L67/02;C08L67/04;C08L101/16 |
主分类号 |
A61L31/14 |
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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