发明名称 |
STAR-SHAPED HYDROXYACID POLYMERS |
摘要 |
Star-shaped poly (hydroxyacid) chains and the process for preparing them are disclosed. The star-shaped polymers have the residue of a central polyfunctional compound having at least 5 hydroxyl or amino groups and 5 to 100 carbon atoms with polymeric arms attached to the functional groups. The polymeric arms are formed from lactide, glycolide or caprolactone. In a preferred aspect the inner segment of the arms are an amorphous of D-lactide and L-lactide and the outer segment of the arms are a semicrystalline polymer of one of L-lactide or D-lactide.
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申请公布号 |
CA2155862(A1) |
申请公布日期 |
1994.09.01 |
申请号 |
CA19932155862 |
申请日期 |
1993.02.16 |
申请人 |
E. I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
SPINU, MARIA |
分类号 |
C08G63/08;(IPC1-7):C08G63/08 |
主分类号 |
C08G63/08 |
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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