US2926160A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Thermal polymerization of acrylonitrile or methacrylonitrile in the presence of a benzoxazolyl disulfide catalyst
Assignee: Monsanto Chemicals Ltd
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Filing: 1953-10-27
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Granted: 1960-02-23
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Expires: 1973-10-27
Abstract
No abstract record available.
Inventors
- 👤 Roland J Kern
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:37
CPC Classifications
C; C08; C08F; C08F20/00; C08F20/02; C08F20/42; C08F20/44
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
49 words
A POLYMERIZATION PROCESS WHICH COMPRISES HEATING A MONOMER CONSISTING OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE IN THE PRESENCE OF, AS THE SOLE POLYMERIZATION CATALYST, SMALL BUT CATALYTIC AMOUNTS OF A BENZOXAZOLYL DISULFIDE COMPOUND EFFECTIVE TO INCREASE THE RATE OF POLYMERIZATION OF SAID MONOMER.
Claim 2
Dependent Claim
49 words
A POLYMERIZATION PROCESS WHICH COMPRISES HEATING A MONOMER CONSISTING OF A COMPOUND SELECTED FROM THE GROUP CONSISTING OF ACRYLONITRILE AND METHACRYLONITRILE IN THE PRESENCE OF, AS THE SOLE POLYMERIZATION CATALYST, SMALL BUT CATALYTIC AMOUNTS OF A BENZOXAZOLYL DISULFIDE COMPOUND EFFECTIVE TO INCREASE THE RATE OF POLYMERIZATION OF SAID MONOMER.
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) | 1963-02-22 | 1963-08-24 | 1964-02-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-02-22 | 1967-08-24 | 1968-02-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-02-22 | 1971-08-24 | 1972-02-23 | $7700.00 | Window Closed / Lapsed |