US3926554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of dyeing textile material made of synthetic fibres
Assignee: Bruckner Apparatebau Michelstadt GmbH
•
Filing: 1973-10-11
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Granted: 1975-12-16
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Expires: 1993-10-11
Abstract
Abstract Textile material made of synthetic fibres is contacted with an aqueous dye liquor containing 20 to 50 ml. of methylene chloride per liter of dye liquor.
Inventors
- 👤 Manfred Schuierer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 13:55
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
35 words
A METHOD OF DYEING TEXTILE MATERIAL MADE OF SYNTHETIC FIBRES, COMPRISING THE STEP OF CONTACTING THE MATERIAL WITH AN AQUEOUS DYE LIQUOR CONTAINING 20 TO 50 ML. OF METHYLENE CHLORIDE PER LITER OF DYE LIQUOR.
Claim 2
Independent Claim
35 words
A METHOD OF DYEING TEXTILE MATERIAL MADE OF SYNTHETIC FIBRES, COMPRISING THE STEP OF CONTACTING THE MATERIAL WITH AN AQUEOUS DYE LIQUOR CONTAINING 20 TO 50 ML. OF METHYLENE CHLORIDE PER LITER OF DYE LIQUOR.
Claim 3
Dependent Claim
57 words
A method according to claim 1 wherein the material is contacted with a composition comprising a minor proportion of an aqueous dye liquor containing 20 to 50 ml. of methylene chloride per liter of dye liquor, and a major proportion of an inert liquid which is immiscible with either the aqueous dye liquor or the methylene chloride.
Claim 4
Dependent Claim
24 words
A method according to claim 1 wherein the aqueous dye liquor contains 30 to 40 ml. of methylene chloride per liter of dye liquor.
Claim 5
Dependent Claim
26 words
A method according to claim 1 wherein the aqueous dye liquor is continuously applied to the textile material while it is spread out in web form.
Claim 6
Dependent Claim
19 words
A method according to claim 4 wherein the moistened textile material is coiled and held in a closed chamber.
Claim 7
Dependent Claim
31 words
A method according to claim 5 wherein the vapour pressure of methylene chloride in the closed chamber corresponds to the vapour pressure of methylene chloride at the temperature in the chamber.
Claim 8
Dependent Claim
19 words
A method according to claim 5 wherein a preheated foil is run in when the textile material is coiled.
Claim 9
Dependent Claim
16 words
A method according to claim 1 wherein the contacting is carried out at an elevated temperature.
Claim 10
Dependent Claim
20 words
A method according to claim 1 wherein the contacting is carried out as a discontinuous operation in a closed container.
Claim 11
Dependent Claim
23 words
A method according to claim 1 wherein the methylene chloride and the aqueous dye liquor are in the form of an oil-in-water emulsion.
Claim 12
Dependent Claim
19 words
A method according to claim 1 wherein the aqueous dye liquor applied to the Textile material contains an emulsifier.
Claim 13
Dependent Claim
24 words
A method according to claim 1 wherein the remaining liquor is subsequently heated to vapourize the methylene chloride which is then recovered by condensation.
Claim 14
Dependent Claim
21 words
A method according to claim 1 wherein the methylene chloride is mechanically separated from the aqueous phase of the remaining liquor.
Claim 15
Dependent Claim
23 words
A method according to claim 1 wherein the remaining liquor is washed in counter-flow with methylene chloride, which is then purified by distillation.
References Cited (Backward Citations)
US3046076A
Cited
US3446886A
Cited
US3616504A
Cited
US3776690A
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US3771956A
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US3792977A
Cited
US3771954A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-12-15 | 1979-06-16 | 1979-12-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-12-15 | 1983-06-16 | 1983-12-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-12-15 | 1987-06-16 | 1987-12-16 | $7700.00 | Window Closed / Lapsed |