US4645510A
Expired / Lapsed
US
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Exhaust dyeing of cellulosic substrates with reactive dyes controlled simultaneous addition of salt and alkali
Assignee: First Fidelity Bank NA New Jersey
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Filing: 1985-05-24
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Granted: 1987-02-24
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Expires: 2005-05-24
Abstract
Abstract The invention provides a process for the exhaust dyeing with a reactive dyestuff of a textile material comprising cellulosic fibres, which process comprises the step of adding to the dyebath containing the reactive dyestuff, simultaneously the salt and the alkali in specified quantities metered per unit time so as to give a substantially linear exhaustion of the dyebath.
Inventors
- 👤 Rolf Hasler
- 👤 Francis Palacin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:23
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/0032; D06P3/00; D06P3/58; D06P3/60; D06P3/66; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/927
Claims Analysis
Total Claims: 40
Claim 1
Independent Claim
88 words
In a process wherein a textile material comprising cellulosic fibres is exhaust dyed with a reactive dyestuff in a dyebath which also contains a salt and an alkali, the improvement which comprises adding the salt and the alkali simultaneously to the reactive dyestuff-containing dyebath in specified quantities metered per unit time or per cycle of the dyeing machine so that a substantially constant percentage of the reactive dyestuff intially present in the dyebath is adsorbed by the substrate per unit time or per cycle of the dyeing machine.
Claim 2
Dependent Claim
88 words
In a process wherein a textile material comprising cellulosic fibres is exhaust dyed with a reactive dyestuff in a dyebath which also contains a salt and an alkali, the improvement which comprises adding the salt and the alkali simultaneously to the reactive dyestuff-containing dyebath in specified quantities metered per unit time or per cycle of the dyeing machine so that a substantially constant percentage of the reactive dyestuff intially present in the dyebath is adsorbed by the substrate per unit time or per cycle of the dyeing machine.
Claim 3
Dependent Claim
30 words
A process according to claim 1, in which the salt and the alkali are simultaneously added to the dyebath according to a positive or negative exponential, logarithmic or power function.
Claim 4
Dependent Claim
25 words
A process according to claim 1, in which the salt and the alkali are simultaneously added to the dyebath according to a linear addition rate.
Claim 5
Dependent Claim
35 words
A process according to claim 1, in which the reactive dyestuff is adsorbed by the substrate at a linear rate of from 0.2 to 6%; based on the total dyestuff concentration initially present, per cycle.
Claim 6
Dependent Claim
22 words
A process according to claim 1, in which the total amount of salt to be metered is from 1 to 200 g/l.
Claim 7
Dependent Claim
22 words
A process according to claim 1, in which the total amount of alkali to be metered is from 0.1 to 50 g/l.
Claim 8
Dependent Claim
21 words
A process according to claim 1, in which the total amount of alkali is approximately 1/10 of that of the salt.
Claim 9
Dependent Claim
17 words
A process according to claim 1, in which the salt is sodium or potassium sulphate or chloride.
Claim 10
Dependent Claim
33 words
A process according to claim 1, in which the alkali is selected from the group consisting of sodium and potassium hydroxide, carbonate, bicarbonate or silicate, borax, trisodium or tripotassium phosphate and mixtures thereof.
Claim 11
Dependent Claim
18 words
A process according to claim 1, in which the goods to liquor ratio is from 1:1 to 1:100.
Claim 12
Dependent Claim
29 words
A process according to claim 1, in which the reactive dyestuff contains at least one fibre-reacting group selected from monochlorotriazinyl, dichlorotriazinyl, monofluorotriazinyl, monofluoropyrimidinyl, difluoropyrimidinyl, fluorochloropyrimidinyl, dichlorochinoxalinyl, methylsulfo-chloromethylpyrimidinyl and sulphatoethylsulphonyl.
Claim 13
Dependent Claim
18 words
A process according to claim 1 carried out at a constant temperature of from 20° to 100° C.
Claim 14
Dependent Claim
16 words
A process according to claim 1 carried out at a pH of from 8 to 12.
Claim 15
Dependent Claim
20 words
A process according to claim 1, in which the textile material comprises cotton or a blend thereof with synthetic fibres.
Claim 16
Dependent Claim
20 words
A process according to claim 3 in which the salt is sodium or potassium sulphate or sodium or potassium chloride.
Claim 17
Dependent Claim
20 words
A process according to claim 4 in which the salt is soduim or potassium sulphate or sodium or potassium chloride.
Claim 18
Dependent Claim
13 words
A process according to claim 7 in which the alkali is sodium carbonate.
Claim 19
Dependent Claim
36 words
A process according to claim 8 wherein the total amount of salt to be metered is from 1 to 200 g/l and the total amount of alkali to be metered is from 0.1 to 50 g/l.
Claim 20
Dependent Claim
32 words
A process according to claim 8 wherein the alkali is selected from the group consisting of sodium and potassium hydroxide, carbonate, bicarbonate and silicate, borax, trisodium and tripotassium phosphate and mixtures thereof.
Claim 21
Dependent Claim
34 words
A process according to claim 15 wherein the reactive dyestuff is adsorbed by the substrate at a linear rate of from 0.2 to 6%, based on the total dyestuff concentration initially present, per cycle.
Claim 22
Dependent Claim
32 words
A process according to claim 15 wherein the alkali is selected from the group consisting of sodium and potassium hydroxide, carbonate, bicarbonate and silicate, borax, trisodium and tripotassium phosphate and mixtures thereof.
Claim 23
Dependent Claim
32 words
A process according to claim 20 wherein the alkali is selected form the group consisting of sodium and potassium hydroxide, carbonate, bicarbonate and silicate, borax, trisodium and tripotassium phosphate and mixtures thereof.
Claim 24
Dependent Claim
35 words
A process according to claim 20 wherein the pH is from 8 to 12 and the temperature is from 20° to 100° C. and is kept constant during the metering of the salt and alkali.
Claim 25
Dependent Claim
35 words
A process according to claim 21 wherein the pH is from 8 to 12 and the temperature is from 20° to 100° C. and is kept constant during the metering of the salt and alkali.
Claim 26
Dependent Claim
35 words
A process according to claim 22 wherein the pH is from 8 to 12 and the temperature is from 20° to 100° C. and is kept constant during the metering of the salt and alkali.
Claim 27
Dependent Claim
36 words
A process according to claim 22 wherein the total amount of salt to be metered is from 1 to 200 g/l and the total amount of alkali to be metered is from 0.1 to 50 g/l.
Claim 28
Dependent Claim
36 words
A process according to claim 25 wherein the total amount of salt to be metered is from 1 to 200 g/l and the total amount of alkali to be metered is from 0.1 to 50 g/l.
Claim 29
Dependent Claim
28 words
A process according to claim 27 wherein the reactive dyestuff contains at least one fibre-reacting group selected from monochlorotriazinyl, dichlorotriazinyl, monofluorotriazinyl, monofluoropyrimidinyl, difluoropyrimidinyl, fluorochloropyrimidinyl, dichlorochinoxalinyl, methylsulfo-chloromethylpyrimidinyl and sulphatoethylsulphonyl.
Claim 30
Dependent Claim
27 words
A process according to claim 15 wherein the addition of salt and alkali and the adsorption of the dyestuff are controlled per cycle of the dyeing machine.
Claim 31
Dependent Claim
27 words
A process according to claim 20 wherein the addition of salt and alkali and the adsorption of the dyestuff are controlled per cycle of the dyeing machine.
Claim 32
Dependent Claim
27 words
A process according to claim 22 wherein the addition of salt and alkali and the adsorption of the dyestuff are controlled per cycle of the dyeing machine.
Claim 33
Dependent Claim
27 words
A process according to claim 25 wherein the addition of salt and alkali and the adsorption of the dyestuff are controlled per cycle of the dyeing machine.
Claim 34
Dependent Claim
25 words
A process according to claim 8 wherein the temperature of the dyebath is raised to the dyeing temperature before addition of the salt and alkali.
Claim 35
Dependent Claim
25 words
A process according to claim 19 wherein the temperature of the dyebath is raised to the dyeing temperature before addition of the salt and alkali.
Claim 36
Dependent Claim
25 words
A process according to claim 20 wherein the temperature of the dyebath is raised to the dyeing temperature before addition of the salt and alkali.
Claim 37
Dependent Claim
25 words
A process according to claim 31 wherein the temperature of the dyebath is raised to the dyeing temperature before addition of the salt and alkali.
Claim 38
Dependent Claim
28 words
A process according to claim 1 wherein the salt and alkali are added simultaneously to the dyebath according to a linear or a positive or negative exponential rate.
Claim 39
Dependent Claim
25 words
A process according to claim 24 wherein the temperature of the dyebath is raised to the dyeing temperature before addition of the salt and alkali.
Claim 40
Dependent Claim
27 words
A process according to claim 38 wherein the addition of salt and alkali and the adsorption of the dyestuff are controlled per cycle of the dyeing machine.
References 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) | 1990-02-23 | 1990-08-25 | 1991-02-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-02-23 | 1994-08-25 | 1995-02-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-02-23 | 1998-08-25 | 1999-02-24 | $7700.00 | Window Closed / Lapsed |