Patent · US Expired

Process for preparing amino-anthraquinones

US3969374A · kind A · utility

3Cited by
0References
19Claims
0Family size

Assignee

Inventors

Key dates

Filing dateFeb 11, 1975
Grant dateJul 13, 1976
Priority date—
Expiry dateFeb 11, 1995

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C225/34
  • WIPO fieldOrganic fine chemistry
  • WIPO sectorChemistry

Abstract

1-AMINO- AND/OR 1,5- AND/OR 1,8-DIAMINO AND/OR 1-AMINO-6-NITRO AND/OR 1-AMINO-7-NITRO-ANTHRAQUINONE ARE PREPARED BY REACTING 1-NITRO- AND/OR 1,5- AND/OR 1,8- AND/OR 1,6- AND/OR 1,7-DINITRO-ANTHRAQUINONE WITH AMMONIA IN THE PRESENCE OF A NITRILE.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.