Patent · US Expired

Diazomerocyanines and mesomeric forms thereof

US4151162A · kind A · utility

49Cited by
6References
3Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJul 22, 1976
Grant dateApr 24, 1979
Priority date—
Expiry dateJul 22, 1996

Classification

  • Technology area (CPC A)Human Necessities
  • CPC primaryA61Q5/10
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Dyes for application to hair to impart rich color nuances thereto, include diazamerocyanines, the mesomeric forms thereof and the salts thereof, of the formula EQU A.dbd.N--N.dbd.B", wherein A is ##STR1## and wherein B" is ##STR2##

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