Anthraquinone polysulfonamide colorants
US6140517A · kind A · utility
1Cited by
10References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 7, 1997 |
| Grant date | Oct 31, 2000 |
| Priority date | — |
| Expiry date | Aug 7, 2017 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09B69/101
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention relates to anthraquinone polysulfonamide colorants derived from colored disulfonyl chlorides containing anthraquinone chromophores by reacting with various diamines. The anthraquinone polysulfonamide colorants are useful for coloring a wide variety of products such as plastics, fibers, films, cosmetics, skin creams or lotions, polishes, waxes, hair colorations, coatings, paints, inks, etc. and are particularly useful in end uses where sublimation, migration, extraction and exudation of presently used colorants are problems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.