Hair dye composition
US10463589B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 9, 2016 |
| Grant date | Nov 5, 2019 |
| Priority date | — |
| Expiry date | Nov 9, 2036 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA61K2800/4324
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
A hair dye composition containing components (A) to (C), and having a mass ratio of component (B) to component (C), (B)/(C), of 0.1 to 30, and a pH (25° C.) of 8.5 to 12. (A): a dye selected from (A-1), (A-2) and (A-3). (B): a cationic polymer having a charge density of 3.0 meq/g or higher. (C): an anionic polysaccharide derivative where part of hydrogen atoms of hydroxy groups of a polysaccharide compound having a constitutional unit of formula (1) is substituted by —(CH2)mCOO− (m is an integer of 1 to 5); an average degree of substitution per the constitutional unit thereby is 0.5 to 2.0; and part of hydrogen atoms of remaining hydroxy groups is optionally substituted by a C1-40 alkyl group and/or alkylene group, where R is a C2-4 alkylene group, and n is the number that makes an average addition molar number of RO per the constitutional unit 0 to 10.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.