Patent US3876370A successfully refreshed from Google Patents.
US3876370A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing synthetic and natural fibers with the liquid ammonia and chloroform or methylene chloride solution of a dye
Assignee: Hoechst AG
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Filing: 1973-02-05
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Granted: 1975-04-08
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Expires: 1993-02-05
Abstract
Abstract Process for dyeing textile materials of natural or synthetic fibers alone in mixture with each other, by treating the fibrous material with a solution of suitable dyestuffs in anhydrous, liquid ammonia alone or in mixture with low boiling organic solvents, within the range below the boiling point of the dyebath, and fixing the dyestuffs applied after removal of the ammonia remaining in the material in known manner typical for the dyestuffs or the dyegoods used.
Inventors
- 👤 Walter Birke
- 👤 Walter Leischner
- 👤 William Mcdowell
- 👤 Rudolf Weingarten
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 16:18
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/64; D06P1/651; D06P1/65106; D06B; D06B19/00; D06P1/81; D06P1/90; D06P1/92; D06P1/922; D06P1/924; D06P1/928; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918; Y10S8/92; Y10S8/922; Y10S8/924; Y10S8/927
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
54 words
IN A PROCESS FOR DYEING TEXTILE MATERIALS OF NATURAL OR SYNTHETIC FIBERS ALONE OR IN MIXTURE WITH EACH OTHER, THE IMPROVEMENT WHICH COMPRISES APPLYING TO THE FIBROUS MATERIAL A DYESTUFF DISSOLVED IN A MIXTURE OF ANHYDROUS, LIQUID AMMONIA AND HALOGENATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF METHYLENE CHLORIDE, CHLOROFORM, AND A COMBINATION THEREOF.
Claim 2
Dependent Claim
54 words
IN A PROCESS FOR DYEING TEXTILE MATERIALS OF NATURAL OR SYNTHETIC FIBERS ALONE OR IN MIXTURE WITH EACH OTHER, THE IMPROVEMENT WHICH COMPRISES APPLYING TO THE FIBROUS MATERIAL A DYESTUFF DISSOLVED IN A MIXTURE OF ANHYDROUS, LIQUID AMMONIA AND HALOGENATED HYDROCARBON SELECTED FROM THE GROUP CONSISTING OF METHYLENE CHLORIDE, CHLOROFORM, AND A COMBINATION THEREOF.
Claim 3
Dependent Claim
17 words
The improvement defined in claim 1, wherein the dyestuff solution is applied by dipping, padding or spraying.
Claim 4
Dependent Claim
14 words
The improvement defined in claim 1, wherein the dyestuff applied is fixed by heat.
Claim 5
Dependent Claim
13 words
The improvement defined in claim 1, wherein the dyestuff is a cationic dyestuff.
Claim 6
Dependent Claim
15 words
The improvement defined in claim 1, wherein the dyestuff is a dyestuff containing fiber-active groups.
Claim 7
Dependent Claim
19 words
The improvement defined in claim 1, wherein the dyestuff is a disperse dyestuff or a water-insoluble organic pigment dyestuff.
Claim 8
Dependent Claim
13 words
The improvement defined in claim 1, wherein the dyestuff is an acid dyestuff.
Claim 9
Dependent Claim
19 words
The improvement defined in claim 1, wherein the dyestuff is a water-soluble anionic or non-ionic dispersed metal complex dyestuff.
Claim 10
Dependent Claim
13 words
The improvement defined in claim 1, wherein textile material is a synthetic polyamide.
Claim 11
Dependent Claim
14 words
The improvement defined in claim 1, wherein the textile material is a linear polyester.
Claim 12
Dependent Claim
11 words
The improvement defined in claim 1, wherein textile material is polyacrylonitrile.
Claim 13
Dependent Claim
14 words
The improvement defined in claim 1, wherein the textile material is natural regenerated cellulose.
References Cited (Backward Citations)
US3666398A
Cited
US3802835A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-07 | 1978-10-07 | 1979-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-07 | 1982-10-07 | 1983-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-07 | 1986-10-07 | 1987-04-08 | $7700.00 | Window Closed / Lapsed |