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US3751530A
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US
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Free radical addition of dithiophosphonic and dithiophosphinic acids to acetylenes
Assignee: Exxon Mobil Corp
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Filing: 1968-05-28
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Granted: 1973-08-07
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Expires: 1988-05-28
Abstract
Abstract DITHIOPHOSPHONIC AND DITHIOPHOSPHINIC ACID ESTERS CAN BE PREPARED BY FREE RADICAL ADDITION OF THE CORRESPONDING DITHIOPHOSPHONIC AND DITHIOPHOSPHINIC ACIDS TO UNSATURATED COMPOUNDS, SUCH AS OLEFINIC AND ACETYLENE COMPOUNDS, E.G. VINYL CHLORIDE, BUTADIENE, ALLENE, METHYLACETYLENE, ETC. THE NOVEL UNSATURATED MONO-ADDUCTS OF THIS REACTION SUCH AS O-ETHYL-S-PROPENYL ETHANEDITHIOPHOSPHONATE, E.G., ARE USEFUL AS PESTICIDES, PARTICULARLY AS INSECTICIDES, AND LUBRICATING OIL ADDITIVES SUCH AS ANTIOXIDANTS, ETC.
Inventors
- 👤 A Oswald
- 👤 G Schmit
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 01:14
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/30; C07F9/32; C07F9/38; C07F9/40
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) | 1976-08-06 | 1977-02-05 | 1977-08-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-08-06 | 1981-02-05 | 1981-08-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-08-06 | 1985-02-05 | 1985-08-07 | $7700.00 | Window Closed / Lapsed |