Substituted 2-aminoalky-1,4-diaminobenzene compounds and oxidation dye precursor compositions containing same
US6436152B1 · kind B1 · utility
12Cited by
9References
10Claims
0Family size
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Key dates
| Filing date | Oct 20, 2000 |
| Grant date | Aug 20, 2002 |
| Priority date | — |
| Expiry date | Dec 7, 2020 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C2601/02
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The oxidation hair dye precursor composition contains from 0.005 to 20.0 percent by weight of one or more coupler compounds and from 0.005 to 20.0 percent by weight of one or more developer compounds. The one or more developer compounds include at least one substituted 2-aminoalkyl-1,4-diaminobenzene compound of the formula (I): New substituted 2-aminoalkyl-1,4-diaminobenzene compounds of formula (I) are described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.