Cationic naphtholactam dyestuffs
US4446326A · kind A · utility
1Cited by
3References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 30, 1981 |
| Grant date | May 1, 1984 |
| Priority date | — |
| Expiry date | Sep 30, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Cationic dyestuffs of the general formula ##STR1## wherein R represents hydrogen or an alkyl radical with a maximum of 8 C atoms, which is optionally substituted by non-ionic radicals, PA0 R.sup.1 represents hydrogen or an alkyl radical with a maximum of 4 C atoms, which is optionally substituted by non-ionic radicals, and PA0 An.sup.- represents an anion, and wherein PA0 the benzene rings and naphthalene rings can contain non-ionic radicals which are customary in dyestuff chemistry, are used for dyeing natural and synthetic cationically dyeable fibres, and paper.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.