Patent US3726837A successfully refreshed from Google Patents.
US3726837A
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Polymerization of ethylenically unsaturated monomers with a 1,2-diaryl-1,2-dicyano-ethane
Assignee: Akzo NV
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Filing: 1970-07-02
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Granted: 1973-04-10
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Expires: 1990-07-02
Abstract
Abstract A PROCESS FOR EFFECTING FREE RADICAL-INITIATED CHEMICAL REACTIONS OF ORGANIC COMPOUNDS WHICH COMPRISES EFFECTING REACTION OF AN ORGANIC COMPOUND IN THE PRESENCE OF A FREE RADICAL INITIATOR COMPOUND COMPRISING A 1,2-DIARYL-1,2-DICYANO-ETHANE COMPOUND THAT HAS A SUBSTITUET GROUP SELECTED FROM THE CLASS CONSISTING OF AN ACYL GROUP, A CARBONAMIDE GROUP AND AN ESTERIFIED CARBOXYL GROUP IN THE 1- AND 2-POSITIONS. ALSO, A PROCESS FOR PREPARING THE INITIATOR COMPOUNDS IS DISCLOSED.
Inventors
- 👤 Jongh H De
- 👤 Jonge C De
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 17:17
CPC Classifications
C; C07; C07C; C07C255/00; C08; C08F; C08F4/00
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-09 | 1976-10-09 | 1977-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-09 | 1980-10-09 | 1981-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-09 | 1984-10-09 | 1985-04-10 | $7700.00 | Window Closed / Lapsed |