Monoazo dyestuffs containing an acetylamino 2,4-dioxo-1,2,3,4-tetrahydroquinazoline
Abstract
Abstract WATER-INSOLUBLE MONOAZO DYESTUFFS OF THE GENERAL FORMULA 1-R2,6-((2,5-DI(R2-O-),4-(R1-NH-SO2-)PHENYL)-N=N-CH(-CO- CH3)-CO-NH-)-1,2,3,4-TETRAHYDROQUINAZOLINE-2,4-DIONE WHEREIN R1 IS HYDROGEN, LOWER ALKYL, ARYL, ARALKYL OR CYCLOALKYL, WHICH MAY BE SUBSTITUTED BY LOWER ALKYL OR HALOGEN, R2 IS LOWER ALKYL, R3 IS HYDROGEN OR LOWER ALKYL AND A IS A BENZENE NUCLEUS SUBSTITUTED BY LOWER ALKYL, LOWER ALKOXY ON HALOGEN. SAID PIGMENTS CAN BE USED, FOR EXAMPLE, FOR DYEING OR PRINTING PLASTICS, CAOUTCHOUC, NATURAL AND SYNTHETIC RESINS TEXTILE FIBROUS MATERIALS OR PAPER. FUTHERMORE THEY CAN 12BE EMPLOYED FOR THE PREPARATION OF PRINTING INKS, LACQUERS AND DISPERSION PAINTS. THE NOVEL PIGMENTS POSSESS GOOD TO VERY GOOD FASTNESS PROPERTIES.
Inventors
- 👤 W Pretzer
- 👤 J Ribka
Bibliographic Details
Claims Analysis
Total Claims: 0References 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) | 1976-01-16 | 1976-07-17 | 1977-01-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-16 | 1980-07-17 | 1981-01-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-16 | 1984-07-17 | 1985-01-16 | $7700.00 | Window Closed / Lapsed |