US4081240A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for dyeing fully synthetic textile material
Assignee: Novartis AG
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Filing: 1975-06-16
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Granted: 1978-03-28
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Expires: 1995-06-16
Abstract
Abstract A process for dyeing textile material of fully synthetic polymers ready for weaving by the exhaustion method, wherein dyeing is carried out at a temperature of at least 70° C in a homogenous solution of one or several dyestuffs in a hydrophobic or hydrophilic solvent or solvent mixture, any sulphur atoms present in the solvent or solvent mixture being divalent or hexavalent.
Inventors
- 👤 Keshav Vinayak Datye
- 👤 Purushottam J. Kangle
- 👤 Branimir Milicevic
- 👤 Alfred Litzler
- 👤 Eugen Johann Koller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 20:49
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/90; D06P1/92; D06P1/922; D06P1/924
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
62 words
A process for dyeing textile material of fully stretched linear polyester fibers by the exhaustion method, comprising the step of immersing textile material for at least about 15 minutes, at a temperature of at least 70° C in a non-aqueous homogeneous solution of a disperse dyestuff in a chlorinated aliphatic hydrocarbon solvent material having a boiling point of at least 100° C.
Claim 2
Dependent Claim
62 words
A process for dyeing textile material of fully stretched linear polyester fibers by the exhaustion method, comprising the step of immersing textile material for at least about 15 minutes, at a temperature of at least 70° C in a non-aqueous homogeneous solution of a disperse dyestuff in a chlorinated aliphatic hydrocarbon solvent material having a boiling point of at least 100° C.
Claim 3
Dependent Claim
19 words
A process as claimed in claim 1, wherein dyeing is performed at a temperature of at least 100° C.
Claim 4
Dependent Claim
20 words
A process as claimed in claim 2, wherein dyeing is carried out at the boiling point of the organic solvent.
Claim 5
Dependent Claim
14 words
A process as claimed in claim 1, wherein dyeing is carried out in perchloroethylene.
Claim 6
Dependent Claim
24 words
A process as claimed in claim 1, wherein during the dyeing operation the evaporating solvent is recovered with the use of a reflux condenser.
Claim 7
Dependent Claim
25 words
A process as claimed in claim 1, wherein the material is dyed and then washed in an aqueous medium in the presence of an adjuvant.
Claim 8
Dependent Claim
13 words
A process as claimed in claim 1, wherein textured polyesters fibers are dyed.
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) | 1981-03-27 | 1981-09-26 | 1982-03-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-27 | 1985-09-26 | 1986-03-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-27 | 1989-09-26 | 1990-03-28 | $7700.00 | Window Closed / Lapsed |