Dyestuff salts
Abstract
Abstract Anionic dyestuffs which contain, as the cation an ammonium ion of the formula ##STR1## wherein R 1 and R 2 independently of one another denote hydrogen, C 1 -C 6 -alkyl which is optionally substituted by hydroxyl, cyclopentyl, cyclohexyl or phenyl, naphthyl or benzyl which are optionally substituted by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, or one of the radicals --(CH 2 --X--O) n --H, [-alkylene-N (R 3 --] P --R 3 or -arylene-N (R 3 )--(CH 2 --X--O) n --H or denotes, together with the nitrogen atom, a 5-membered to 7-membered heterocyclic radical, R 3 denotes hydrogen, C 1 -C 6 -alkyl which is optionally substituted by OH, cyclopentyl, cyclohexyl or phenyl, naphthyl or benzyl which are optionally substituted by halogen, C 1 -C 4 -alkyl or C 1 -C 4 -alkoxy, or the radical --(CH 2 --X--O) n --H, X represents ##STR2## n represents the numbers 1-10, preferably 1-5, and P REPRESENTS THE NUMBERS 1-4 Are readily soluble in water.
Inventors
- 👤 Hermann Perrey
- 👤 Karlheinz Wolf
- 👤 Erich Eimers
- 👤 Konrad Nonn
- 👤 Reinhold Hornle
Bibliographic Details
Claims Analysis
Total Claims: 6References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1981-09-18 | 1982-03-20 | 1982-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-18 | 1986-03-20 | 1986-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-18 | 1990-03-20 | 1990-09-19 | $7700.00 | Window Closed / Lapsed |