发明名称 |
METHOD OF PRODUCING ASYMETRIC N-PHENYL-N'-SUBSTITUTED P-PHENYLENE DIAMINES |
摘要 |
An improved process for the preparation of asymmetrical N-phenyl-N'-substituted para-phenylene diamines by the reductive alkylation of para-nitroso-diphenylhydroxylamine with an aldehyde or a ketone in the presence of hydrogen and a hydrogenation catalyst is disclosed. The improvement comprises utilizing as the hydrogenation catalyst (1) one member selected the group consisting of palladium and platinum sulfide, in an amount less than 1%, by weight, based on the weight of para-nitroso-diphenylhydroxylamine, and (2) activated carbon with a specific surface area of at least 700 square meters per gram and an ash content of less than 7.5%, by weight. |
申请公布号 |
CS203958(B2) |
申请公布日期 |
1981.03.31 |
申请号 |
CS19790002522 |
申请日期 |
1979.04.12 |
申请人 |
AKZO NV,NL |
发明人 |
BERGFELD,MANFRED,DE;ZENGEL,HANS-GEORG,DE |
分类号 |
C07B61/00;B01J21/18;B01J23/00;B01J23/44;B01J27/00;B01J27/04;B01J27/045;B01J35/10;C07C;C07C67/00;C07C209/00;C07C209/26;C07C209/38;C07C209/40;C07C209/54;C07C211/53;C07C211/54 |
主分类号 |
C07B61/00 |
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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