US3775049A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous dyeing of polyester fibres with azo dyestuffs soluble in water-immerscible halogenated hydrocarbons
Assignee: Bayer AG
•
Filing: 1970-12-18
•
Granted: 1973-11-27
•
Expires: 1990-12-18
Abstract
Abstract Process for the continuous dyeing of synthetic fibre materials from organic solvents wherein the fibre materials are impregnated with dyeing liquors containing azo dyestuffs which are soluble in organic solvents and correspond to the formula IN WHICH A, R1, R2, R3 and R4 have the meaning given in the disclosure and are subsequently subjected to a heat treatment.
Inventors
- 👤 G Wolfrum
- 👤 R Neeff
- 👤 W Kruckenberg
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 14:42
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/908; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/922
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
22 words
The process of claim 1 in which the sum of carbon atoms in R1, R2, R3 and R4 is 10 to 20.
Claim 2
Dependent Claim
10 words
The process of claim 1 in which R6 is C4-C7-alkyl.
Claim 3
Dependent Claim
10 words
The process of claim 1 in which R6 is heptyl-(3).
Claim 4
Dependent Claim
15 words
The process of claim 1 in which A is a phenyl radical of the formula
Claim 5
Dependent Claim
20 words
The process of claim 1 in which A is a substituted or unsubstituted thiazole or a substituted or unsubstituted thiadiazole.
Claim 6
Dependent Claim
15 words
The process of claim 1 in which A is a thiazole radical of the formula
Claim 7
Dependent Claim
15 words
The process of claim 1 in which A is a isothiazole radical of the formula
Claim 8
Dependent Claim
15 words
The process of claim 1 in which A is a thiadiazole radical of the formula
Claim 9
Dependent Claim
17 words
The process of claim 1 in which said azo dye-stuff is soluble in said water-immiscible organic solvent.
Claim 10
Dependent Claim
30 words
The process of claim 10 in which the dyed material is subjected to a subsequent step of (C) rinsing with water-immiscible organic solvent in which said azo dyestuff is soluble.
Claim 11
Dependent Claim
24 words
The process of claim 1 in which said water-immiscible organic solvent is an aliphatic chlorohydrocarbon having a boiling point of between 40* and 150*C.
Claim 12
Dependent Claim
23 words
The process of claim 1 in which said water-immiscible organic solvent is selected from the group consisting of tetrachLoroethylene, trichloroethylene, 1,1,1-trichloroethane and 1,1,1-trichloropropane.
Claim 13
Dependent Claim
16 words
The process of claim 1 in which said heat-treatment is conducted with dry heat at 120*-230*C.
Claim 14
Dependent Claim
17 words
The process of claim 1 in which said heat treatment is conducted with solvent vapor at 100*-150*C.
References Cited (Backward Citations)
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Cited
US3057848A
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US3096320A
Cited
US3122410A
Cited
US3046076A
Cited
US3398137A
Cited
US3313590A
Cited
US3510243A
Cited
US3586663A
Cited
GB1192984A
Cited
US3579497A
Cited
FR1581325A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |