Patent · US Active

1-hexzl-1H-pyrazole-4,5-diamine hemisulfate, and its use in dyeing compositions

US8784505B2 · kind B2 · utility

1Cited by

53References

4Claims

0Family size

Assignee

The Procter & Gamble Company · US

Inventors

Wolfram Geibel · Nettetal, DE
Ingo Weber · Basel, CH
Armin Osan · Darmstadt, DE
Markus Speckbacher · Aschaffenburg, DE

Key dates

Filing date	Feb 15, 2013
Grant date	Jul 22, 2014
Priority date	—
Expiry date	Feb 15, 2033

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07D231/38
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

1-hexyl-1H-pyrazole-4,5-diamine hemisulfate, as represented in formula (IX-a), and its use in oxidative dyeing composition. This pyrazole salt was found to combine good stability as raw material and good shade intensity with a range of common couplers when formulated in hair dyeing composition.

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