Patent · US Expired

Azo compounds, use in dyeing, compositions containing them and dyeing processes

US6492502B2 · kind B2 · utility

22Cited by
5References
10Claims
0Family size

Assignee

Inventors

Key dates

Filing dateDec 18, 2000
Grant dateDec 10, 2002
Priority date—
Expiry dateJan 22, 2021

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C281/16
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Azo compounds of the 2-(4-amino)phenyldiazinecarboximidamide type and 2-(4-amino)phenylhydrazinecarboximidamide type, a process for their synthesis, their use for dyeing keratin fibers, dye compositions containing them, and dyeing processes.

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