发明名称 |
Curable mixtures containing epoxy resins and isomelamines |
摘要 |
A novel process for the preparation of isomelamines of the formula I, <IMAGE> (I) which is characterized in that an N-cyano-N-(ar or cyclo)alkylcarboxylic acid amide or N-cyano-N-allylcarboxylic acid amide of the formula II or III <IMAGE> is reacted with aqueous sodium hydroxide solution, potassium hydroxide solution or ammonia solution or a primary aliphatic or cycloaliphatic amine in a solvent or with a primary aliphatic alcohol in the presence of a catalytic amount of a basic compound in a temperature range from -20 DEG C. to 200 DEG C., at least 3 hydroxyl or amino group equivalents being used per 3 carboxylic acid amide group equivalents. The isomelamines prepared by the process according to the invention are valuable curing agents for epoxide resins.
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申请公布号 |
US4537946(A) |
申请公布日期 |
1985.08.27 |
申请号 |
US19840675906 |
申请日期 |
1984.11.28 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
LOHSE, FRIEDRICH;ZONDLER, HELMUT |
分类号 |
C07D251/54;C08G59/00;C08G59/40;C08G59/50;(IPC1-7):C08G59/50 |
主分类号 |
C07D251/54 |
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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