Patent · US Active

Direct dyes and composition comprising the dyes

US10196520B2 · kind B2 · utility

0Cited by

1References

15Claims

0Family size

Assignee

KAO GERMANY GMBH · DE

Inventors

Dominic Pratt · Darmstadt, DE
Hartmut Möhring · Darmstadt, DE

Key dates

Filing date	Dec 11, 2015
Grant date	Feb 5, 2019
Priority date	—
Expiry date	Dec 19, 2035

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC09B29/3682
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

The present invention relates to novel direct dyes and compositions comprising them for dyeing keratin fibers especially human hair. The novel dyes of the present invention have benzothiophene structure providing intensive and homogeneous dyeing on keratin fibers, especially human hair.

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