Patent · US Expired

Oxidative dye compositions containing a 2,5-dihydroxyphenylalkanoic acid or salts thereof as antioxidant

US4289495A · kind A · utility

19Cited by
2References
28Claims
0Family size

Assignee

Inventors

Key dates

Filing dateAug 18, 1978
Grant dateSep 15, 1981
Priority date—
Expiry dateAug 18, 1998

Classification

  • Technology area (CPC C)Chemistry; Metallurgy
  • CPC primaryC07C59/64
  • WIPO fieldPharmaceuticals
  • WIPO sectorChemistry

Abstract

Oxidative dye compositions for keratin fibres are provided which contain a 2,5-dihydroxyphenylalkanoic acid or salt thereof as antioxidant.

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