发明名称 |
Increasing the molecular weight of polyamides |
摘要 |
An increase in the molecular weight of a polyamide or recycled polyamide, essentially without crosslinking, can be achieved by blending said polyamide with a polyfunctional epoxy resin and a sterically hindered hydroxyphenylalkylphosphonic acid ester or half-ester and heating the blend to above the melting point (or the glass transition temperature) of the polyamide, in the absence of a catalyst of the type used in the polymerization of polyamides.
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申请公布号 |
US5756596(A) |
申请公布日期 |
1998.05.26 |
申请号 |
US19970835245 |
申请日期 |
1997.04.07 |
申请人 |
CIBA SPECIALTY CHEMICALS CORPORATION |
发明人 |
PFAENDNER, RUDOLF;HERBST, HEINZ;HOFFMANN, KURT |
分类号 |
C08G69/48;C08G81/00;(IPC1-7):C08F283/04;C08G8/28;C08G59/68 |
主分类号 |
C08G69/48 |
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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