发明名称 |
Poly(glycolic acid)/poly(oxyethylene) triblock copolymers and method of manufacturing the same |
摘要 |
Poly(glycolic acid)/poly(oxyalkylene) ABA triblock copolymers having the following formula: <IMAGE> and wherein x and y have values which correspond to a total polyglycolide content of about 75 to 95 weight percent and a total polyoxyalkylene content of about 5 to 25 weight percent. The copolymers are useful for manufacturing fibers possessing a sufficiently low modulus of elasticity to permit their use as absorbable sutures having the requisite flexibility for use in monofilament form. A process of preparation involves purifying the hydroxyl-ended poly(oxyalkylene) and allowing it to react with glycolide to produce an ABA triblock copolymer of extrusion grade in which A represents a polyglycolic acid block and B represents a poly(oxyalkylene) block.
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申请公布号 |
US4452973(A) |
申请公布日期 |
1984.06.05 |
申请号 |
US19820441307 |
申请日期 |
1982.11.12 |
申请人 |
AMERICAN CYANAMID COMPANY |
发明人 |
CASEY, DONALD J.;ROBY, MARK S. |
分类号 |
C08G63/00;A61K9/20;A61K9/22;A61L17/00;A61L17/12;A61L27/18;A61L31/06;C08G63/08;C08G63/66;C08G63/664;C08G63/82;C08G63/85;D01F6/86;(IPC1-7):C08G63/08 |
主分类号 |
C08G63/00 |
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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