Water-soluble dye salts of azo-pyrimidine dyestuffs
Abstract
Abstract Water-soluble dye salts of cationic 5-arylazo pyrimidine dyestuffs wherein one of the carbon atoms in 2-, 4- and 6positions of the pyrimidine nucleus is substituted by an aliphatic, cycloaliphatic or carbocyclic aromatic radical bound by way of an -0- or -S-bridge to the pyrimidine nucleus and the remaining carbon atoms in the aforesaid positions are substituted by aliphatically, cycloaliphatically or carbocyclicaromatically monosubstituted amino groups and which dyestuffs contain one external quaternary ammonium group; such dyestuffs being useful for dyeing and printing of synthetic acid-modified polymeric materials, and particularly for the dyeing of blended fabrics consisting of unmodified and acid-modified synthetic polyamide fibers, because they dye the latter with good fastness to light and also to wet treatments, and at the same time reserve well the unmodified polyamide fibers in the blended fabric.
Inventors
- 👤 Hans Wegmuller
- 👤 Jacques Voltz
- 👤 Gunter Kaupp
Bibliographic Details
Claims Analysis
Total Claims: 10References Cited (Backward Citations)
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1974-09-27 | 1975-03-29 | 1975-09-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-27 | 1979-03-29 | 1979-09-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-27 | 1983-03-29 | 1983-09-28 | $7700.00 | Window Closed / Lapsed |