Diazotization of aromatic amines
US4269767A · kind A · utility
1Cited by
2References
15Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 6, 1979 |
| Grant date | May 26, 1981 |
| Priority date | — |
| Expiry date | Mar 6, 1999 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B29/00
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Aromatic amine salts are diazotized, in aqueous solution/suspension, utilizing a nitrogenous vaporous admixture as the diazotizing agent, said admixture comprising nitric oxide and nitrogen peroxide, with the content of NO therein being in substantial excess with respect to the NO.sub.2. The resulting solutions of aryldiazonium salts are useful in the preparation of aromatic azoamines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.