US2931696A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Phosphorous-containing polyphenolic reserving agents for acrylonitrile polymer base fibers
Assignee: Dow Chemical Co
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Filing: 1958-07-29
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Granted: 1960-04-05
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Expires: 1978-07-29
Abstract
No abstract record available.
Inventors
- 👤 Allan R Wirth
- 👤 Albert S Messer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:35
CPC Classifications
D; D06; D06P; D06P5/00; D06P5/12; D06P1/00; D06P1/44; D06P1/667; D06P3/00; D06P3/02; D06P3/04; D06P3/14; D06P3/16; D06P3/58; D06P3/60; D06P3/62; D06P3/70; D06P3/82; D06P3/8204; D06P3/8266; D06P3/8271; Y; Y10; Y10S; Y10S8/00; Y10S8/916; Y10S8/917; Y10S8/918; Y10S8/92; Y10S8/924; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
117 words
A SYNTHETIC TEXTILE FIBER WHICH IS CHARACTERIZED IN HAVING ITS NORMAL RECEPTIVITY TO DYESTUFFS MODIFIED SO AS TO HAVE DYE-RESISTING CHARACTERISTICS, SAID FIBER BEING SELECTED FROM THE CLASS OF SYNTHETIC TEXTILE FIBERS CONSISTING OF (A) INTIMATE POLYMER BLENDS COMPRISED ESSENTIAL OF (A1) BETWEEN ABOUT 80 AND ABOUT 99 WEIGHT PERCENT, BASED ON DRY FIBER WEIGHT, OF A FIBER-FORMING ACRYLONITRILE ADDITION POLYMER WITH (A2) BETWEEN ABOUT 20 AND ABOUT 1 WEIGHT PERCENT, BASED AND DRY FIBER WEIGHT, OFR AN AZOTIC POLYMERIC DYE-ASSISTING ADJUVANT SELECTED FROM THE GROUP CONSISTING OF ADDITION POLYMERS OF AT LEAST ABOUT 0 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE AZOTIC POLYMER, OF (A2A) N-VINYL LACTAM MONOMERS, (A2C) N-VINYL-3-MORPHOLINONE MONOMERS OF THE STRUC TURE:
Claim 2
Dependent Claim
117 words
A SYNTHETIC TEXTILE FIBER WHICH IS CHARACTERIZED IN HAVING ITS NORMAL RECEPTIVITY TO DYESTUFFS MODIFIED SO AS TO HAVE DYE-RESISTING CHARACTERISTICS, SAID FIBER BEING SELECTED FROM THE CLASS OF SYNTHETIC TEXTILE FIBERS CONSISTING OF (A) INTIMATE POLYMER BLENDS COMPRISED ESSENTIAL OF (A1) BETWEEN ABOUT 80 AND ABOUT 99 WEIGHT PERCENT, BASED ON DRY FIBER WEIGHT, OF A FIBER-FORMING ACRYLONITRILE ADDITION POLYMER WITH (A2) BETWEEN ABOUT 20 AND ABOUT 1 WEIGHT PERCENT, BASED AND DRY FIBER WEIGHT, OFR AN AZOTIC POLYMERIC DYE-ASSISTING ADJUVANT SELECTED FROM THE GROUP CONSISTING OF ADDITION POLYMERS OF AT LEAST ABOUT 0 WEIGHT PERCENT, BASED ON THE WEIGHT OF THE AZOTIC POLYMER, OF (A2A) N-VINYL LACTAM MONOMERS, (A2C) N-VINYL-3-MORPHOLINONE MONOMERS OF THE STRUC TURE:
References Cited (Backward Citations)
US2623806A
Cited
GB759595A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1963-04-05 | 1963-10-05 | 1964-04-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-04-05 | 1967-10-05 | 1968-04-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-04-05 | 1971-10-05 | 1972-04-05 | $7700.00 | Window Closed / Lapsed |