发明名称 |
PRODUCTION OF BLOCK COPOLYAMIDE FROM OMEGA-LACTAM |
摘要 |
A process for producing high impact block copolyamide is described, comprising anion polymerizing omega -lactam in the presence of a prepolymer polymerization accelerator. The prepolymer is prepared by reacting a butadiene homopolymer and/or butadiene-acrylonitrile copolymer containing hydroxyl groups at the terminals thereof with polymethylene polyphenylene isocyanate or tolylene diisocyanate at an equivalent ratio of isocyanate group to hydroxyl group (NCO/OH) of 1:1 or more. With the thus-produced high impact block copolyamide, impact strength is greatly improved, and bleeding of polybutadiene is not observed. |
申请公布号 |
DE3372628(D1) |
申请公布日期 |
1987.08.27 |
申请号 |
DE19833372628 |
申请日期 |
1983.03.25 |
申请人 |
MITSUBOSHI BELTING LTD. |
发明人 |
MATSUO, TADAO;MORI, SHUJI;TANAKA, KENZO |
分类号 |
C08G18/10;C08G18/69;C08G69/00;C08G69/04;C08G69/14;C08G69/16;C08G69/18;(IPC1-7):C08G69/20 |
主分类号 |
C08G18/10 |
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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