US3958288A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous dyeing of high quality polyester fibers
Assignee: Hoechst AG
•
Filing: 1973-03-26
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Granted: 1976-05-25
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Expires: 1993-03-26
Abstract
Abstract Process for the continuous dyeing of high-quality polyester fibers, wherein on the textile material, which has been impregnated with a dyeing liquor, the dyestuff applied is fixed by means of a combined treatment with saturated vapor at high pressure and a wet treatment at high temperature.
Inventors
- 👤 Hans-Ulrich von der Eltz
- 👤 Egbert Kloss
- 👤 Hartwig Kohler
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 09:35
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/34; D06P3/52; D06P3/54; D06B; D06B19/00; D06P5/00; D06P5/20; D06P5/2044; D06P5/2061; D06P5/2066; D06P5/2077; B; B30; B30B; B30B9/00; B30B9/02; B30B9/24; B30B9/241; Y; Y10; Y10S; Y10S68/00; Y10S68/903
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
69 words
A process for the continuous fixation of heat-fixable dyestuffs on flat surfaces of texturized polyester fibers, wherein the textile material impregnated with the dyestuff is subjected, in a pressure-tight closed system and tension-free, to a combined treatment with a saturated vapor at an excess pressure of from 1 to 4 atmospheres and a wet treatment, the temperature of the treating liquor corresponding to the pressure of the saturated vapor.
Claim 2
Dependent Claim
69 words
A process for the continuous fixation of heat-fixable dyestuffs on flat surfaces of texturized polyester fibers, wherein the textile material impregnated with the dyestuff is subjected, in a pressure-tight closed system and tension-free, to a combined treatment with a saturated vapor at an excess pressure of from 1 to 4 atmospheres and a wet treatment, the temperature of the treating liquor corresponding to the pressure of the saturated vapor.
Claim 3
Dependent Claim
25 words
A process as claimed in claim 1, wherein the high-temperature wet treatment is carried out prior to the treatment with saturated vapor under high pressure.
Claim 4
Dependent Claim
24 words
A process as claimed in claim 1, wherein the high-temperature wet treatment is carried out after the treatment with saturated vapor under high pressure.
Claim 5
Dependent Claim
23 words
A process as claimed in claim 1, wherein the padded material is intermediately dried or partly dehydrated prior to the combined fixation method.
Claim 6
Dependent Claim
31 words
A process as claimed in claim 1, wherein the high-pressure saturated-vapor treatment is carried out with steam and the high-temperature wet treatment is carried out with water or an aqueous liquor.
Claim 7
Dependent Claim
34 words
A process as claimed in claim 1, wherein the high-pressure saturated-vapor treatment is carried out with the vapor of an organic solvent and the high-temperature wet treatment is carried out with the corresponding liquid
Claim 8
Dependent Claim
15 words
A process as claimed in claim 1, wherein, as textile material, knitted fabric is used.
References Cited (Backward Citations)
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US3730678A
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US3663161A
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US3593543A
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US3667898A
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US3824814A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-05-25 | 1979-11-24 | 1980-05-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-25 | 1983-11-24 | 1984-05-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-25 | 1987-11-24 | 1988-05-25 | $7700.00 | Window Closed / Lapsed |