US3972676A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust process for the dyeing of synthetic organic textile material
Assignee: Novartis Corp
•
Filing: 1974-05-06
•
Granted: 1976-08-03
•
Expires: 1994-05-06
Abstract
Abstract A process for the dyeing by the exhaust process of synthetic organic textile material in navy blue to black shades from halogenated hydrocarbons, which process comprises the use, for dyeing, of at least one disazo dyestuff of formula I ##SPC1## wherein A represents ##SPC2## R 1 represents hydrogen, or an alkyl or alkoxy radical having 1 to 4 carbon atoms, and R 2 represents the same as R 1 , or the-CF 3 group, in admixture with the monoazo dyestuff of formula II ##SPC3## or with the anthraquinone dyestuff mixture of formula III ##SPC4## wherein R 3 represents a mixture of H and -CH 2 --CH 2 -CH 2 --CH 2 --OH, and when A in formula I represents ##SPC5## In addition to a small amount of the disazo dyestuff of formula IV ##SPC6## or of formula V ##SPC7##
Inventors
- 👤 Hans Wilhelm Liechti
- 👤 Raymond DeFago
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:57
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924; C; C09; C09B; C09B1/00; C09B1/50; C09B1/56; C09B1/58; C09B1/60; C09B31/00; C09B31/02; C09B31/06; C09B31/062; C09B31/12; C09B31/14; D06P1/908
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
82 words
A process for dyeing synthetic organic textile material in navy blue to black shades, by the exhaust process, from halogenated hydrocarbons, which process comprises the use of at least one disazo dyestuff of formula I ##SPC24## where R 1 is hydrogen, or an alkyl or alkoxy radical having 1 to 4 carbon atoms, and R 2 is hydrogen or an alkyl or alkoxy radical having 1 to 4 carbon atoms, or trifluoromethyl in admixture with the monoazo dyestuff of formula II ##SPC25##
Claim 2
Dependent Claim
82 words
A process for dyeing synthetic organic textile material in navy blue to black shades, by the exhaust process, from halogenated hydrocarbons, which process comprises the use of at least one disazo dyestuff of formula I ##SPC24## where R 1 is hydrogen, or an alkyl or alkoxy radical having 1 to 4 carbon atoms, and R 2 is hydrogen or an alkyl or alkoxy radical having 1 to 4 carbon atoms, or trifluoromethyl in admixture with the monoazo dyestuff of formula II ##SPC25##
Claim 3
Dependent Claim
32 words
Process according to claim 1, wherein the dyestuff of formula II is employed in an amount of at least one and a half times the amount of the dyestuff of formula I.
Claim 4
Dependent Claim
16 words
Process according to claim 1, wherein the employed halogenated hydrocarbon is a halogenated, lower aliphatic hydrocarbon.
Claim 5
Dependent Claim
21 words
Process according to claim 1, wherein the employed halogenated hydrocarbon is a chlorinated hydrocarbon boiling between 70° and 130°C, particularly tetrachloroethylene.
Claim 6
Dependent Claim
20 words
Process according to claim 1, comprising the use of finely dispersed dyestuffs, having a particle size of below 5 μ.
Claim 7
Dependent Claim
21 words
Process according to claim 1, wherein dyeing is performed at temperatures of from 100 to 150°C, preferably from 120 to 150°C.
Claim 8
Dependent Claim
27 words
Process according to claim 1, wherein the employed synthetic organic textile material is fibre material made from linear, high-molecular esters of aromatic polycarboxylic acids with polyfunctional alcohols.
Claim 9
Dependent Claim
12 words
Process according to claim 7, wherein polyethylene glycol terephthalate fibres are used.
Claim 10
Dependent Claim
39 words
A dyestuff preparations for carrying out the process according to claim 1, comprising a dyestuff mixture consisting of dyestuffs of formulae I and II, formulae having a particle size of below 5 μ, together with dispersing agent and carrier.
Claim 11
Dependent Claim
19 words
A dyestuff preparations according to claim 9, which contains polyvinylpyrrolidone derivatives as dispersing agent, and paraffin oil as carrier.
Claim 12
Dependent Claim
22 words
The synthetic organic textile material, particularly polyester material, dyed in navy blue to black shades according to the process of claim 1.
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) | 1979-08-03 | 1980-02-02 | 1980-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-03 | 1984-02-02 | 1984-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-03 | 1988-02-02 | 1988-08-03 | $7700.00 | Window Closed / Lapsed |