US3184283A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for applying fiber-reactive dyes to cellulosic materials
Assignee: EIDP Inc
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Filing: 1963-01-14
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Granted: 1965-05-18
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Expires: 1983-01-14
Abstract
No abstract record available.
Inventors
- 👤 Jr John Elton Cole
- 👤 Gumprecht William Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 17:21
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/58; D06P3/60; D06P3/66; D06P3/663; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/918
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
112 words
A CONTINUOUS PROCESS FOR DYEING CELLULOSIC MATERIALS WITH A FIBER-REACTIVE DYE CONTAINING A 2,3-DICHLORO-6QUINOXALINECARBONYAMINO GROUP, SAID PROCESS BEING ONE WHEREIN CELLULOSIC MATERIAL IS (1) PADDED AT A PH OF FROM 6 TO 7.8 WITH AN AQUEOUS SOLUTION OF SAID FIBER-REACTIVE DYE, (2) THE PADDED MATERIAL THEN BEING DRIED FOLLOWED BY (3) TREATING THE DRIED MATERIAL WITH AN AQUEOUS ALKALINE LIQUOR, THE ALKALI OF SAID LIQUOR BEING WEAKER THAN 5 GRAMS PER LITER OF SODIUM HYDROXIDE AND STRONGER THAN SODIUM BICARBONATE, SAID LIQUOR CONTAINING FROM 200 TO 300 GRAMS PER LITER OF SODIUM SULFATE FOLLOWED BY (4) STEAMING THE RESULTING MATERIAL FROM (3) AND THEN (5) WASHING THE RESULTING MATERIAL OF STEP (4).
Claim 2
Dependent Claim
112 words
A CONTINUOUS PROCESS FOR DYEING CELLULOSIC MATERIALS WITH A FIBER-REACTIVE DYE CONTAINING A 2,3-DICHLORO-6QUINOXALINECARBONYAMINO GROUP, SAID PROCESS BEING ONE WHEREIN CELLULOSIC MATERIAL IS (1) PADDED AT A PH OF FROM 6 TO 7.8 WITH AN AQUEOUS SOLUTION OF SAID FIBER-REACTIVE DYE, (2) THE PADDED MATERIAL THEN BEING DRIED FOLLOWED BY (3) TREATING THE DRIED MATERIAL WITH AN AQUEOUS ALKALINE LIQUOR, THE ALKALI OF SAID LIQUOR BEING WEAKER THAN 5 GRAMS PER LITER OF SODIUM HYDROXIDE AND STRONGER THAN SODIUM BICARBONATE, SAID LIQUOR CONTAINING FROM 200 TO 300 GRAMS PER LITER OF SODIUM SULFATE FOLLOWED BY (4) STEAMING THE RESULTING MATERIAL FROM (3) AND THEN (5) WASHING THE RESULTING MATERIAL OF STEP (4).
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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |