US3792970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaustion process for dyeing synthetic fibre materials
Assignee: Bayer AG
•
Filing: 1972-04-14
•
Granted: 1974-02-19
•
Expires: 1992-04-14
Abstract
Abstract IN WHICH Ar, Hal and n have the meaning given below in the disclosure. By means of these dyestuffs there are obtained dyeings in excellent dyestuff yields and fastness properties. Exhaust process for the dyeing of synthetic fibre materials from organic water-immiscible solvents wherein are used as dyestuffs anthraquinone dyestuffs of the formula
Inventors
- 👤 R Neeff
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 17:35
CPC Classifications
C; C09; C09B; C09B1/00; C09B1/50; C09B1/503; D; D06; D06P; D06P1/00; D06P1/90; D06P1/908; Y; Y10; Y10S; Y10S8/00; Y10S8/938
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
10 words
The process of claim 1 in which n is 0.
Claim 2
Dependent Claim
18 words
The process of claim 1 in which Ar is in the 2-position relative to the anthraquinonyl hydroxyl group.
Claim 3
Dependent Claim
18 words
The process of claim 1 in which Ar is in the 3-position relative to the anthraquinonyl hydroxyl group.
Claim 4
Dependent Claim
54 words
The process of claim 1 in which Ar is a radical of benzene, naphthalene, diphenyl, diphenylmethane, 1,1-diphenylethane or 2, 2-diphenylpropane which is substituted by two or three hydroxyl groups or a radical of benzene, naphthalene, diphenyl, diphenylmethane, 1,1-diphenylethane or 2,2-diphenylpropane which is substituted by two or three hydroxyl groups and C1-C4-alkyl or cycloalkyl groups.
Claim 5
Dependent Claim
25 words
The process of claim 1 in which said water-immiscible organic solvent is an aliphatic halogenated hydrocarbon boiling in the range of 40* to 170* C.
Claim 6
Dependent Claim
16 words
The process of claim 1 in which said water-immiscible organic solvent is tetrachloroethylene, trichloroethylene or 1,1,1-trichloroethane.
Claim 7
Dependent Claim
29 words
The process of claim 1 in which said water-immiscible organic solvent contains up to 1 per cent by weight of water referred to the weight Of the organic solvent.
Claim 8
Dependent Claim
29 words
The process of claim 1 in which said water-immiscible organic solvent contains up to 0.5 per cent by weight of water referred to the weight of the organic solvent.
Claim 9
Dependent Claim
32 words
The process of claim 1 in which said water-immiscible organic solvent contains 0.05 to 2 per cent by weight of a nonionic dyeing auxiliary referred to the weight of the organic solvent.
Claim 10
Dependent Claim
32 words
The process of claim 1 in which said water-immiscible organic solvent contains 0.05 to 2 per cent by weight of an ionic dyeing auxiliary referred to the weight of the organic solvent.
References Cited (Backward Citations)
US2274751A
Cited
US3549667A
Cited
US3349104A
Cited
US3510243A
Cited
US3636065A
Cited
GB1217380A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-02-18 | 1977-08-20 | 1978-02-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-02-18 | 1981-08-20 | 1982-02-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-02-18 | 1985-08-20 | 1986-02-19 | $7700.00 | Window Closed / Lapsed |