US3558611A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel stilbene derivatives
Assignee: Sandoz AG
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Filing: 1968-02-19
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Granted: 1971-01-26
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Expires: 1988-02-19
Abstract
Abstract NOVEL ASYMMETRIC BIS-TRIAZINYLAMINO-STILBENES OF THE FORMULA I 2,2''-DI(Z-O3S-),4,4''-BIS((((X-PHENYL)-NH-),Y-1,3,5- TRIAZINYL)-NH-)STILBENE IN WHICH ONE X SIGNIFIES A HYDROGEN ATOM, AND THE OTHER X SIGNIFIES A CHLORINE ATOM IN THE 2-, 3- OR 4-POSITION, Y SIGNIFIES A METHYLAMINO, DIMETHYLAMINO, B-HYDROXYETHYLAMINO, N-METHYL - N - B - HYDROXYETHYLAMINO OR MORPHOLINO RADICAL, AND Z SIGNIFIES A CATION FORMING ATOM OR GROUP, ARE PRODUCED AND THEIR USE IN THEIR BRIGHTENING OF TEXTILES, E.G. POLYAMIDE FIBRES, COTTON, LINEN, REGENERATED CELLULOSE, IS EXEMPLIFIED WHEREBY UNDYED OR WHITE GOODS BECOME BRIGHTENED AND GOODS DYED IN DELICATE PASTEL SHADES BECOME MORE BRILLIANT.
Inventors
- 👤 Fritz Fleck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:19
CPC Classifications
C; C07; C07D; C07D413/00; C07D413/14; C07D251/00; C07D251/02; C07D251/12; C07D251/26; C07D251/40; C07D251/54; C07D251/68
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-01-25 | 1974-07-27 | 1975-01-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-01-25 | 1978-07-27 | 1979-01-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-01-25 | 1982-07-27 | 1983-01-26 | $7700.00 | Window Closed / Lapsed |