| 发明名称 |
PRODUCTION OF BLOCK COPOLYMERS |
| 摘要 |
A process for producing new type block-copolymers by polycondensation at a temperature below 250 DEG C. of at least two different prepolymers selected from the group consisting of the four prepolyamides represented by the following general formulas:
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| 申请公布号 |
US3683047(A) |
申请公布日期 |
1972.08.08 |
| 申请号 |
USD3683047 |
申请日期 |
1969.11.20 |
| 申请人 |
MAKOTO HONDA;KENICHIRO SATO |
发明人 |
MAKOTO HONDA;KENICHIRO SATO |
| 分类号 |
C08G69/00;(IPC1-7):C08G41/04 |
主分类号 |
C08G69/00 |
| 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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