发明名称 |
Manufacture of nylon by adding liquid diamine to aqueous polyamide forming salt solution |
摘要 |
A process for the manufacture of nylons by heating an aqueous solution of a salt of an alkanedicarboxylic acid of 6 to 12 carbon atoms and a diamine of the formula NH2RNH2, where R is alkylene of 6 to 12 carbon atoms or is a radical <IMAGE> to a temperature at which a nylon is formed, under superatmospheric pressure and with removal of water. The solution used is an aqueous solution of from 75 to 90 percent strength by weight of a salt of a dicarboxylic acid and a diamine, which solution has been obtained by neutralizing a less concentrated salt solution, which contains an appropriate dissolved excess of the particular dicarboxylic acid, with the corresponding diamine. The nylons obtained are used for the manufacture of moldings.
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申请公布号 |
US4251653(A) |
申请公布日期 |
1981.02.17 |
申请号 |
US19780913748 |
申请日期 |
1978.06.08 |
申请人 |
BASF AKTIENGESELLSCHAFT |
发明人 |
ECKELL, ALBRECHT;MATTHIES, PAUL;PILZ, GEORG;ROTZOLL, RUDI-HEINZ |
分类号 |
C08G69/00;C08G69/28;(IPC1-7):C08G69/28 |
主分类号 |
C08G69/00 |
代理机构 |
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地址 |
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