Paraphenylenediamines substituted at position 2 of the benzene ring
US4311478A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1978 |
| Grant date | Jan 19, 1982 |
| Priority date | — |
| Expiry date | Dec 4, 1998 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C275/10
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Dye, especially for human hair that consists of the new chemical compounds of the general formula ##STR1## in which Z is selected in the group consisting of hydroxyalkyl, alkoxyalkyl, acylaminoalkyl, carbalkoxyaminoalkyl, mesylaminoalkyl, ureidoalkyl, aminoalkyl, monoalkylaminoalkyl, dialkylaminoalkyl radicals, and the salts of the corresponding acids. Among the preferred acid salts are the sulfates, hydrochlorides, phosphates and tartrates. This dye is particularly suited for use with metadiphenols, metaphenylenediamines, metaaminophenols as well as the couplers of the formula ##STR2## in which R.sub.3 and R.sub.4 are identical or different and may represent hydrogen, alkoxy, or alkyl and in which R.sub.5 is selected from the group consisting of acyl, carbalkoxy and ureido.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.