Naphtholactam dyestuffs
US4022799A · kind A · utility
1Cited by
2References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 1975 |
| Grant date | May 10, 1977 |
| Priority date | — |
| Expiry date | Aug 21, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B57/06
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Naphtholactam dyestuffs of the formula ##STR1## wherein A represents the remaining members of an aromatic ring system and R represents hydrogen, alkyl, aralkyl, cycloalkyl, alkyl, aryl or an alkylene radical bonded to the naphthalene ring in the 2-position, as well as their preparation and their use for dyeing and printing natural and synthetic materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.