Method of preparing 4-aminodiphenylamine
US5117063A · kind A · utility
69Cited by
16References
94Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 21, 1991 |
| Grant date | May 26, 1992 |
| Priority date | — |
| Expiry date | Jun 21, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C209/38
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A method of producing 4-ADPA is disclosed wherein aniline and nitrobenzene are reacted under suitable conditions to produce 4-nitrodiphenylamine and/or 4-nitrosodiphenylamine and/or their salts, either or both of which are subsequently reduced to produce 4-ADPA. The 4-ADPA can be reductively alkylated to produce p-phenylenediamine products which are useful as antiozonants.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.