US3242243A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Coloring of acrylonitrile polymer filaments
Assignee: Monsanto Co
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Filing: 1962-04-04
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Granted: 1966-03-22
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Expires: 1982-04-04
Abstract
No abstract record available.
Inventors
- 👤 John P Knudsen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:31
CPC Classifications
D; D06; D06P; D06P3/00; D06P3/70; D06P3/702; D01; D01F; D01F1/00; D01F1/02; D01F1/06; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38; D01F6/44; D01F6/54; Y; Y10; Y10S; Y10S8/00; Y10S8/92; Y10S8/927
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
83 words
A PROCESS FOR COLORING ACRYLONITRILE POLYMER FILAMENTS WHICH CONSISTS IN EXTRUDING A SOLUTION OF AN ACRYLONITRILE POLYMER COMPRISING AT LEAST 80% ACRYLONITRILE AND UP TO 20% OF AT LEAST ONE OTHER COPOLYMERIZABLE MONOOLEFINIC MONOMER IN A SOLVENT THEREFOR INTO A COAGULATION BATH CONSISTING OF A PRECIPITANT FOR THE POLYMER AND FROM 0.1 TO 10% OF A DYESTUFF SOLUBLE THEREIN, COAGULATING COLORED FILAMENTS IN SAID COAGULATION BATH FOR A PERIOD RANGING FROM ONE-HALF OF TEN SECONDS, AND WITHDRAWING THE RESULTING COLORED COAGULATED FILAMENTS THEREFROM.
Claim 2
Dependent Claim
83 words
A PROCESS FOR COLORING ACRYLONITRILE POLYMER FILAMENTS WHICH CONSISTS IN EXTRUDING A SOLUTION OF AN ACRYLONITRILE POLYMER COMPRISING AT LEAST 80% ACRYLONITRILE AND UP TO 20% OF AT LEAST ONE OTHER COPOLYMERIZABLE MONOOLEFINIC MONOMER IN A SOLVENT THEREFOR INTO A COAGULATION BATH CONSISTING OF A PRECIPITANT FOR THE POLYMER AND FROM 0.1 TO 10% OF A DYESTUFF SOLUBLE THEREIN, COAGULATING COLORED FILAMENTS IN SAID COAGULATION BATH FOR A PERIOD RANGING FROM ONE-HALF OF TEN SECONDS, AND WITHDRAWING THE RESULTING COLORED COAGULATED FILAMENTS THEREFROM.
References Cited (Backward Citations)
US2216793A
Cited
US2558735A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |