US2822376A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Reaction of phosphine with alpha, beta-unsatu-rated compounds
Assignee: Wyeth Holdings LLC
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Filing: 1957-02-27
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Granted: 1958-02-04
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Expires: 1977-02-27
Abstract
No abstract record available.
Inventors
- 👤 Hechenbleikner Ingenuin
- 👤 Michael M Rauhut
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 02:08
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/50; C07F9/505; C07F9/5059
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
A PROCESS FOR PREPARING AN ORGANOPHOSPHINE WHICH COMPRISES: REACTING OF FROM ONE TO THREE MOLES OF AN OLEFIN CONTAINING AN ELECTRONEGATIVE SUBSTITUENT POSITIONED ADJACENT TO THE DOUBLE BOND OF SAID OLEFIN WITH THE MOLE OF PHOSPHINE IN THE PRESENCE OF A SRONGLY ALKALINE CATALYST AT TEMPERATURES NOT TO EXCEED ABOUT 100*C., SAID CATALYST BEING PRESENT FROM ABOUT 0.1% TO ABOUT 15% BY WEIGHT BASED UPON SAID OLEFIN, AND WHEREIN THE LATTER OLEFIN IS SELECTED FROM THE CLASS CONSISTING OF ACRYLONITRILE, ACRYLAMIDE, ETHYLACRYLATE AND LAURYLACRYLATE.
Claim 2
Dependent Claim
84 words
A PROCESS FOR PREPARING AN ORGANOPHOSPHINE WHICH COMPRISES: REACTING OF FROM ONE TO THREE MOLES OF AN OLEFIN CONTAINING AN ELECTRONEGATIVE SUBSTITUENT POSITIONED ADJACENT TO THE DOUBLE BOND OF SAID OLEFIN WITH THE MOLE OF PHOSPHINE IN THE PRESENCE OF A SRONGLY ALKALINE CATALYST AT TEMPERATURES NOT TO EXCEED ABOUT 100*C., SAID CATALYST BEING PRESENT FROM ABOUT 0.1% TO ABOUT 15% BY WEIGHT BASED UPON SAID OLEFIN, AND WHEREIN THE LATTER OLEFIN IS SELECTED FROM THE CLASS CONSISTING OF ACRYLONITRILE, ACRYLAMIDE, ETHYLACRYLATE AND LAURYLACRYLATE.
References Cited (Backward Citations)
GB673451A
Cited
US2579580A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-02-03 | 1961-08-05 | 1962-02-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-02-03 | 1965-08-05 | 1966-02-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-02-03 | 1969-08-05 | 1970-02-04 | $7700.00 | Window Closed / Lapsed |