| 发明名称 |
PREPARATION PROCESS OF DL-LACTIC ACID-GLYCOLIC ACID-COPOLYMER |
| 摘要 |
A process for copolymerizing lactide and glycolide by using a specific amount of stannous octoate as a catalyst in the presence of a polymerization regulator at temperature of 200-230.degree.C to prepare dllactic acid-glycolic acid-copolymers which contain 50-60 mol % of a dl-lactic acid unit and 40-50 mol % of a glycolic acid unit and have inherent viscosity of 0.4-0.6 in chloroform. |
| 申请公布号 |
CA1306830(C) |
申请公布日期 |
1992.08.25 |
| 申请号 |
CA19880571615 |
申请日期 |
1988.07.08 |
| 申请人 |
MITSUI TOATSU CHEMICALS, INCORPORATED |
发明人 |
TAKAYANAGI, HIROSHI;KOBAYASHI, TADASHI;MASUDA, TAKAYOSHI;SHINODA, HOSEI |
| 分类号 |
C08G63/06;A61K9/20;A61K9/22;C08G63/08;C08G63/78;C08G63/82;C08G63/85 |
主分类号 |
C08G63/06 |
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