Patent US3647350A successfully refreshed from Google Patents.
US3647350A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dithiocarbazates and dithiocarbamates with acid and direct dyes
Assignee: Eugene-Gallia Sa
•
Filing: 1969-08-04
•
Granted: 1972-03-07
•
Expires: 1989-08-04
Abstract
Abstract These dyes, notably for animal fibers, such as hair, wool, silk, and containing essentially acid or direct dyestuffs, comprise as adjuvants dithiocarbamic derivatives of formula: WHEREIN M is NH4, K or Na, and R1 and R2 identical or different represent each a hydrogen atom, a possibly substituted alkyl or phenyl, a NR3 (R4) group or a N=CR5 (R6) group, R1 and R2 being also able to form together and with the nitrogen atom to which they are linked a heterocycle. These adjuvants improve substantially the affinity of said dyestuffs for the fibers, consequently the intensity of the shade, as well as the uniformity of the dyeing.
Inventors
- 👤 Jean Galerne
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 18:13
CPC Classifications
A; A61; A61K; A61K8/00; A61K8/18; A61K8/30; A61K8/40; A61K8/44; A61K8/447; A61Q; A61Q5/00; A61Q5/06; A61Q5/065; D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/642; D06P1/649; D06P1/6492; A61K2800/00; A61K2800/40; A61K2800/42; A61K2800/43; A61K2800/432; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
22 words
According to claim 1, enclosing said dithiocarbamic derivatives in an amount ranging from about 1 percent to about 5 percent by weight.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-03-07 | 1975-09-06 | 1976-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-03-07 | 1979-09-06 | 1980-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-03-07 | 1983-09-06 | 1984-03-07 | $7700.00 | Window Closed / Lapsed |