Patent US3193602A successfully refreshed from Google Patents.
US3193602A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the production of flame retarded acrylic fibers
Assignee: Monsanto Co
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Filing: 1962-08-13
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Granted: 1965-07-06
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Expires: 1982-08-13
Abstract
No abstract record available.
Inventors
- 👤 Richard L Leonard
- 👤 John D Veitch
- 👤 Thomas M Veazey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:00
CPC Classifications
D; D01; D01D; D01D5/00; D01D5/06; C; C08; C08K; C08K5/00; C08K5/0008; C08K5/0066; C08L; C08L33/00; C08L33/18; C08L33/20; D01F; D01F1/00; D01F1/02; D01F1/07; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
109 words
A METHOD FOR THE PRODUCTION FOR A FLAME RETARDED ACRYLIC FIBER COMPRISING AT LEAST 85 PERCENT ACRYLONITRILE AND UP TO 15 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH TO WHICH HAS BEEN ADDED A FLAME RETARDING AGENT SELECTING FROM THE GROUP CONSISTING OF HALOGENATED LONG CHAIN FATTY ACID ESTERS, ALIPHATIC PHOSPHATES, HALOGENATED ALIPHATIC PHOSPHATES, POLYVINYL HALIDES AND VINYLIDENE HALIDES, SAID FIBERS BEING BETWEN 10 AND 40 DENIER PER FILAMENT, COMPRISING SPINNING A SOLUTION OF SAID FIBER INTO A SPIN BATH BEING COMPRISED OF AT LEAST 60 PERCENT OF A DIMETHYLACETAMIDE SOLVENT WITH WATER COMPRISING THE REMAINDER AT A TEMPERATURE OF BELOW 36*C. WITH A JET STRETCH OF BELOW 0.6.
Claim 2
Independent Claim
109 words
A METHOD FOR THE PRODUCTION FOR A FLAME RETARDED ACRYLIC FIBER COMPRISING AT LEAST 85 PERCENT ACRYLONITRILE AND UP TO 15 PERCENT OF ANOTHER MONO-OLEFINIC MONOMER COPOLYMERIZABLE THEREWITH TO WHICH HAS BEEN ADDED A FLAME RETARDING AGENT SELECTING FROM THE GROUP CONSISTING OF HALOGENATED LONG CHAIN FATTY ACID ESTERS, ALIPHATIC PHOSPHATES, HALOGENATED ALIPHATIC PHOSPHATES, POLYVINYL HALIDES AND VINYLIDENE HALIDES, SAID FIBERS BEING BETWEN 10 AND 40 DENIER PER FILAMENT, COMPRISING SPINNING A SOLUTION OF SAID FIBER INTO A SPIN BATH BEING COMPRISED OF AT LEAST 60 PERCENT OF A DIMETHYLACETAMIDE SOLVENT WITH WATER COMPRISING THE REMAINDER AT A TEMPERATURE OF BELOW 36*C. WITH A JET STRETCH OF BELOW 0.6.
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) | 1968-07-05 | 1969-01-04 | 1969-07-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-07-05 | 1973-01-04 | 1973-07-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-07-05 | 1977-01-04 | 1977-07-06 | $7700.00 | Window Closed / Lapsed |