US2939759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dyeing polyacrylonitrile fibers with the aid of cuprous complexes
Assignee: Wyeth Holdings LLC
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Filing: 1955-01-04
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Granted: 1960-06-07
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Expires: 1975-01-04
Abstract
No abstract record available.
Inventors
- 👤 Scalera Mario
- 👤 Brody Frederick
- 👤 Charles L Zimmerman
- 👤 August B Ulmes
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 07:59
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/704; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
104 words
A PARTICULATE BLENDED DYESTUFF COMPOSITION COMPRISING: A BLEND OF ONE HUNDRED PARTS BY WEIGHT OF AN ORGANIC DYESTUFF CONTAINING AT LEAST ONE SULFONATE RADICAL IN ITS STRUCTURE, AND AT LEST 25 PARTS BY WEIGHT OF CUPROUS COMPLEX SALT OF AN ORGANIC COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI(LOWER-ALKYL) AND DI(CYANO LOWER ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND SUBSTITUTED CYANOGUANIDINES, SAID COMPOSITION BEING SOLUBLE IN AQUEOUS ACID SOLUTION AT A PH OF FROM ABOUT TWO TO ABOUT SIX TO FORM A DYEBATH ADAPTED FOR THE DYEING OF POLYACRYLONITRILE FIBERS.
Claim 2
Dependent Claim
104 words
A PARTICULATE BLENDED DYESTUFF COMPOSITION COMPRISING: A BLEND OF ONE HUNDRED PARTS BY WEIGHT OF AN ORGANIC DYESTUFF CONTAINING AT LEAST ONE SULFONATE RADICAL IN ITS STRUCTURE, AND AT LEST 25 PARTS BY WEIGHT OF CUPROUS COMPLEX SALT OF AN ORGANIC COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI(LOWER-ALKYL) AND DI(CYANO LOWER ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND SUBSTITUTED CYANOGUANIDINES, SAID COMPOSITION BEING SOLUBLE IN AQUEOUS ACID SOLUTION AT A PH OF FROM ABOUT TWO TO ABOUT SIX TO FORM A DYEBATH ADAPTED FOR THE DYEING OF POLYACRYLONITRILE FIBERS.
Claim 3
Dependent Claim
124 words
A PROCESS OF DYEING POLYACRYLONITRILE FIBERS WHICH COMPRISES: FORMING AN AQUEOUS ACID DYEBATH CONONE HUNDRED PARTS BY WEIGHT OF AN ORGANIC DYESTUFF CONTAINING AT LEAST ONE SULFONATE RADICAL IN ITS STRUCTURE, AND AT LEAST 25 PARTS BY WEIGHT OF AN CUPROUS COMPLEX SALT OF AN ORGANIC COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI(LOWER-ALKYL) AND DI(CYANO LOWER ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND SUBSTITUTED CYANOGUANIDINES, SAID DYEBATH HAVING A PH IN THE RANGE FROM ABOUT TWO TO ABOUT SIX, SUBJECTING SAID FIBERS TO THE ACTION OF SAID DYEBATH, WHEREBY EXHAUSTION OF THE DYE IS INITIATED, AND CONTINUING SAID ACTION UNTIL EXHAUSTION OF THE DYE ON SAID FIBERS SUBSTANTIALLY CEASES.
Claim 4
Dependent Claim
124 words
A PROCESS OF DYEING POLYACRYLONITRILE FIBERS WHICH COMPRISES: FORMING AN AQUEOUS ACID DYEBATH CONONE HUNDRED PARTS BY WEIGHT OF AN ORGANIC DYESTUFF CONTAINING AT LEAST ONE SULFONATE RADICAL IN ITS STRUCTURE, AND AT LEAST 25 PARTS BY WEIGHT OF AN CUPROUS COMPLEX SALT OF AN ORGANIC COMPOUND, SAID ORGANIC COMPOUND BEING SELECTED FROM THE GROUP CONSISTING OF THE LOWER ALIPHATIC DINITRILES AND OXYGENATED NITRILES, B,B''-DICYANOETHYL ETHER, CYANAMIDE AND ITS DI(LOWER-ALKYL) AND DI(CYANO LOWER ALKYL) DERIVATIVES, CYANOACETAMIDE, CYANOGUANIDINE AND SUBSTITUTED CYANOGUANIDINES, SAID DYEBATH HAVING A PH IN THE RANGE FROM ABOUT TWO TO ABOUT SIX, SUBJECTING SAID FIBERS TO THE ACTION OF SAID DYEBATH, WHEREBY EXHAUSTION OF THE DYE IS INITIATED, AND CONTINUING SAID ACTION UNTIL EXHAUSTION OF THE DYE ON SAID FIBERS SUBSTANTIALLY CEASES.
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) | 1963-06-07 | 1963-12-07 | 1964-06-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-07 | 1967-12-07 | 1968-06-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-07 | 1971-12-07 | 1972-06-07 | $7700.00 | Window Closed / Lapsed |