US3380979A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel process and polymer
Assignee: Monsanto Co
•
Filing: 1964-09-30
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Granted: 1968-04-30
•
Expires: 1984-09-30
Abstract
No abstract record available.
Inventors
- 👤 Chiang Robert
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:29
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44; C08F2/00; C08F2/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
80 words
A METHOD FOR PRODUCING POLYACRYLONITRILE WITH IMPROVED THERMOPLASTIC PROPERTIES WHICH COMPRISES REACTING ACRYLONITRILE IN AN INERT MEDIUM AT A TEMPERATURE IN THE RANGE OF FROM 0* TO 100*C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COORDINATE COMPLEX CATALYST REPRESENTED BY THE FORMULA M(ALR4)X WHEREIN M REPRESENTS A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, R REPRESENTS A LOWER ALKYL RADICAL AND X IS AN INTEGER WHICH IS EQUAL TO THE VALENCE OF M.
Claim 2
Independent Claim
80 words
A METHOD FOR PRODUCING POLYACRYLONITRILE WITH IMPROVED THERMOPLASTIC PROPERTIES WHICH COMPRISES REACTING ACRYLONITRILE IN AN INERT MEDIUM AT A TEMPERATURE IN THE RANGE OF FROM 0* TO 100*C. IN THE PRESENCE OF A CATALYTIC AMOUNT OF A COORDINATE COMPLEX CATALYST REPRESENTED BY THE FORMULA M(ALR4)X WHEREIN M REPRESENTS A METAL SELECTED FROM THE GROUP CONSISTING OF ALKALI AND ALKALINE EARTH METALS, R REPRESENTS A LOWER ALKYL RADICAL AND X IS AN INTEGER WHICH IS EQUAL TO THE VALENCE OF M.
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) | 1971-04-30 | 1971-10-30 | 1972-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-04-30 | 1975-10-30 | 1976-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-04-30 | 1979-10-30 | 1980-04-30 | $7700.00 | Window Closed / Lapsed |