US4184842A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Continuous dyeing of cellulose fibers with reactive dyestuffs
Assignee: Hoechst AG
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Filing: 1976-07-08
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Granted: 1980-01-22
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Expires: 1996-07-08
Abstract
Abstract Process for the continuous dyeing of flat textile structures made of cellulose fibers and their mixtures with synthetic fiber materials by applying onto the web of fibrous material an aqueous solution of at least one reactive dyestuff and a fixation agent mixture of a liquid alkali metal silicate of the formula Me 2 I ·x SiO 2 (x=3-5) (water glass) and an aqueous alkali metal hydroxide solution, placing the material thus treated into a dwelling chamber, exposing the material in a cuttled-up or opened-out condition in said chamber to humid heat, so that the dyestuff is fixed by the dwelling operation, and finally removing the material again continuously from the dwelling chamber.
Inventors
- 👤 Hans-Ulrich von der Eltz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 14:39
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/673; D06P1/67383; D06B; D06B17/00; D06B17/02; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P3/82; D06P3/8204; D06P3/8223; D06P5/00; D06P5/20; D06P5/2066; D06P5/2072; D06P5/2077
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
154 words
A process for the continuous dyeing of flat textile structures made of cellulose fibers and their mixtures with synthetic fiber materials by means of reactive dyestuffs, which comprises applying, at a temperature of from 20° to 80° C., an aqueous solution of at least one reactive dyestuff, and a fixation agent mixture of a liquid sodium silicate of the formula Na 2 O.xSiO 2 (x-3-5) and of from 37° to 60° Be and an aqueous sodium hydroxide solution of from 30° to 45° Be in a weight ratio of from 1:0.1 to 1:0.5, onto the web of fibrous material, placing the material thus treated into a dwelling chamber, exposing the material in a cuttled-up or opened-out condition in said chamber to humid heat, at the above-mentioned temperature range for 5 to 30 minutes, so that the dyestuff is fixed by the dwelling operation, and finally removing the material again continuously from the dwelling chamber.
Claim 2
Dependent Claim
154 words
A process for the continuous dyeing of flat textile structures made of cellulose fibers and their mixtures with synthetic fiber materials by means of reactive dyestuffs, which comprises applying, at a temperature of from 20° to 80° C., an aqueous solution of at least one reactive dyestuff, and a fixation agent mixture of a liquid sodium silicate of the formula Na 2 O.xSiO 2 (x-3-5) and of from 37° to 60° Be and an aqueous sodium hydroxide solution of from 30° to 45° Be in a weight ratio of from 1:0.1 to 1:0.5, onto the web of fibrous material, placing the material thus treated into a dwelling chamber, exposing the material in a cuttled-up or opened-out condition in said chamber to humid heat, at the above-mentioned temperature range for 5 to 30 minutes, so that the dyestuff is fixed by the dwelling operation, and finally removing the material again continuously from the dwelling chamber.
Claim 3
Dependent Claim
30 words
A process as claimed in claim 1, wherein the fixation of slowly reacting dyestuffs is completed by a steaming process of from 10 to 30 seconds following the dwelling phase.
Claim 4
Dependent Claim
38 words
A process as claimed in claim 1, wherein the fixation of slowly reacting dyestuffs is completed by a dipping of the goods into a sodium silicate solution (water glass) at a temperature of 95° C. for 10 seconds.
Claim 5
Dependent Claim
32 words
A process as in claim 1, wherein the padding liquors are preheated and introduced into the padder, or the dye liquor is applied onto the goods in a trough to be heated.
Claim 6
Dependent Claim
19 words
A process as claimed in claim 1, wherein the impregnation may also be effected within the pre-heated dwelling chamber.
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) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |