发明名称 |
Purification of N,N{40 -disubstituted p-phenylenediamine antiozonants and oil stabilizers |
摘要 |
Process for purifying N,N'-disubstituted p-phenylenediamine antiozonants and oil stabilizers utilizes a steam-distillation step to remove Schiff's base derivatives of p-phenylenediamine and N-monosubstituted p-phenylenediamine as well as aldehyde and ketone contaminants and corresponding alcohols thereof.
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申请公布号 |
US4131622(A) |
申请公布日期 |
1978.12.26 |
申请号 |
US19770798186 |
申请日期 |
1977.05.18 |
申请人 |
PENNWALT CORPORATION |
发明人 |
POPOFF, IVAN C.;HAINES, PAUL G. |
分类号 |
C08K5/00;C07C67/00;C07C209/00;C07C211/54;C08K5/17;C08K5/18;C08L7/00;C08L21/00;C09K15/18;C10L1/223;C10L1/228;(IPC1-7):C07C85/26 |
主分类号 |
C08K5/00 |
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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