US3080210A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spinning of acrylonitrile polymers
Assignee: Monsanto Chemicals Ltd
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Filing: 1961-12-01
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Granted: 1963-03-05
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Expires: 1981-12-01
Abstract
No abstract record available.
Inventors
- 👤 Pompelio A Ucci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 18:52
CPC Classifications
D; D01; D01F; D01F6/00; D01F6/02; D01F6/18; D01F6/28; D01F6/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
154 words
A PROCESS FOR PRODUCING A SHAPED ARTICLE FROM AN ACRYLONITRILE POLYMER WHICH COMPRISES THE STEPS OF PREPARING A SOLUTION CONTAINING SAID POLYMER, EXTRUDING THE RESULTING SOLUTION INTO A STREAM BY FORCING SAID SOLUTION THROUGH A SHAPED ORIFICE INTO A GASEOUS EVAPORTIVE MEDIUM IN WHICH ONLY A SMALL AMOUNT OF THE SOLVENT USED IN THE PREPARATION OF SAID SOLUTION IS EVAPORATED FROM THE STREAM AS A GAS, DIRECTING SAID STREAM THROUGH SAID MEDIUM FOR A SHORT DISTANCE AND INTO A COAGULATING BATH COMPRISING A LIQUID THAT IS A PRECIPITANT FOR THE POLYMER AND AN EXTRACTANT FOR THE SOLVENT, WITHDRAWING THE THUSFORMED ARTICLE FROM SAID COAGULATING BATH, STRETCHING SAID ARTICLE BETWEEN THE POINT OF EXTRUSION AND POINT OF WITHDRAWAL TO ATTENUATE SAME, PASSING THE ARTICLE THROUGH A DSECOND LIQUID AND STRETCHING SAME IN THE PRESENCE OF SAID SECOND LIQUID TO ORIENT THE POLYMER MOLECULES THEREOF, AND THEN PERMITTING THE ARTICLE TO RELAX AND THEREBY TO SHRINK.
Claim 2
Dependent Claim
154 words
A PROCESS FOR PRODUCING A SHAPED ARTICLE FROM AN ACRYLONITRILE POLYMER WHICH COMPRISES THE STEPS OF PREPARING A SOLUTION CONTAINING SAID POLYMER, EXTRUDING THE RESULTING SOLUTION INTO A STREAM BY FORCING SAID SOLUTION THROUGH A SHAPED ORIFICE INTO A GASEOUS EVAPORTIVE MEDIUM IN WHICH ONLY A SMALL AMOUNT OF THE SOLVENT USED IN THE PREPARATION OF SAID SOLUTION IS EVAPORATED FROM THE STREAM AS A GAS, DIRECTING SAID STREAM THROUGH SAID MEDIUM FOR A SHORT DISTANCE AND INTO A COAGULATING BATH COMPRISING A LIQUID THAT IS A PRECIPITANT FOR THE POLYMER AND AN EXTRACTANT FOR THE SOLVENT, WITHDRAWING THE THUSFORMED ARTICLE FROM SAID COAGULATING BATH, STRETCHING SAID ARTICLE BETWEEN THE POINT OF EXTRUSION AND POINT OF WITHDRAWAL TO ATTENUATE SAME, PASSING THE ARTICLE THROUGH A DSECOND LIQUID AND STRETCHING SAME IN THE PRESENCE OF SAID SECOND LIQUID TO ORIENT THE POLYMER MOLECULES THEREOF, AND THEN PERMITTING THE ARTICLE TO RELAX AND THEREBY TO SHRINK.
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) | 1966-03-04 | 1966-09-03 | 1967-03-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-03-04 | 1970-09-03 | 1971-03-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-03-04 | 1974-09-03 | 1975-03-05 | $7700.00 | Window Closed / Lapsed |