US3905762A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the continuous, even dyeing of cotton piece goods containing portions of abnormal fibers
Assignee: Hoechst AG
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Filing: 1972-12-26
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Granted: 1975-09-16
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Expires: 1992-12-26
Abstract
Abstract Process for the continuous dyeing of cotton piece goods containing portions of abnormal fibers, by impregnating the textile material for the purpose of covering these irregularities with a padding liquor which contains - in addition to suitable dyestuffs or components of developing dyestuffs - a cellulose ether, and then fixing the dyestuffs evenly on the fiber surface while precipitating (coagulating) said cellulose ether optionally with the action of the completing component for the development of the dyestuffs, by treating the goods with a solution of a salt or acid salt of a polyvalent metal or cation-active adjuvant.
Inventors
- 👤 Armand Lehinant
- 👤 Hans-Peter Maier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 01:16
CPC Classifications
D; D06; D06P; D06P1/00; D06P1/44; D06P1/673; D06P1/67333; D06P1/67341; D06P1/46; D06P1/48; D06P1/50; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P3/68
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
103 words
IN A PROCESS FOR THE CONTINUOUS LEVEL DYEING OF COTTON PIECE GOODS CONTAINING PORTIONS OF ABNORMAL FIBERS, THE IMPROVEMENT, FOR THE PURPOSE OF COVERING THESE IRREGULARTIES, WHICH COMPRISES: IMPREGNATING THE TEXTILE MATERIAL WITH AN ALKALINE PADDING LIQUOR WHICH CONTAINS CARBOXYMETHYL CELLULOSE AND REACTIVE DYESTUFF OR COMPONENTS OF AZO DEVELOPING DYESTUFF: AND THEN, EITHER AFTER FIXATION OF THE REACTIVE DYESTUF OR SIMULTANEOUSLY WITH THE COMPLETION OF DEVELOPMENT OF THE AZO DYESTUFF, PRECIPITATING THE DYED CARBOXYMETHYL CELLULOSE ON THE FIBER SURFACE BY TREATING THE GOODS WITH A SOLUTION OF A SALT OR ACID SALT OF A POLYVALENT METAL OR CATIONC ADJUVANT CONTAINING QUATERNARY AMMONIUM COMPOUNDS.
Claim 2
Dependent Claim
103 words
IN A PROCESS FOR THE CONTINUOUS LEVEL DYEING OF COTTON PIECE GOODS CONTAINING PORTIONS OF ABNORMAL FIBERS, THE IMPROVEMENT, FOR THE PURPOSE OF COVERING THESE IRREGULARTIES, WHICH COMPRISES: IMPREGNATING THE TEXTILE MATERIAL WITH AN ALKALINE PADDING LIQUOR WHICH CONTAINS CARBOXYMETHYL CELLULOSE AND REACTIVE DYESTUFF OR COMPONENTS OF AZO DEVELOPING DYESTUFF: AND THEN, EITHER AFTER FIXATION OF THE REACTIVE DYESTUF OR SIMULTANEOUSLY WITH THE COMPLETION OF DEVELOPMENT OF THE AZO DYESTUFF, PRECIPITATING THE DYED CARBOXYMETHYL CELLULOSE ON THE FIBER SURFACE BY TREATING THE GOODS WITH A SOLUTION OF A SALT OR ACID SALT OF A POLYVALENT METAL OR CATIONC ADJUVANT CONTAINING QUATERNARY AMMONIUM COMPOUNDS.
Claim 3
Dependent Claim
27 words
A process as claimed in claim 1, wherein the carboxymethyl cellulose is incorporated into the dyestuffs or dyestuff components, preferably into the coupling components, as finishing agent.
Claim 4
Dependent Claim
25 words
A process as claimed in claim 1, wherein as precipitating agent a salt or acid salt of aluminium or circonium, preferably aluminium sulfate is used.
References Cited (Backward Citations)
US2215196A
Cited
US3496007A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-15 | 1979-03-17 | 1979-09-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-15 | 1983-03-17 | 1983-09-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-15 | 1987-03-17 | 1987-09-16 | $7700.00 | Window Closed / Lapsed |