Patent US3178469A successfully refreshed from Google Patents.
US3178469A
Expired / Lapsed
US
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Carboxyarylphosphonates
Assignee: Standard Oil Co
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Filing: 1962-07-19
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Granted: 1965-04-13
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Expires: 1982-07-19
Abstract
No abstract record available.
Inventors
- 👤 Ellis K Fields
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 13:38
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C07; C07F; C07F9/00; C07F9/02; C07F9/28; C07F9/38; C07F9/40; C07F9/4003; C07F9/4021; C07F9/4056; C10M2223/00; C10M2223/06; C10M2223/065
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
97 words
THE METHOD WHICH COMPRISES REACTING (A) AN AROYL PEROXIDE AND (B) A PHOSPHITE HAVING THE FORMULA HP(O)(OR)2 WHEREIN R IS HYDROCARBYL CONTAINING FROM 1 TO ABOUT 30 CARBON ATOMS OF THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, ARALKYL AND ARYL IN THE MOLAR RATIO OF PEROXIDE TO PHOSPHITE OF FROM ABOUT 1:1 TO 1:10 AT A TEMPERATURE OF FROM ABOUT 80*C. TO ABOUT 160*C.; AND RECOVERING FROM THE REACTON MIXTURE A COMPOUND HAVING THE FORMULA HOOC-AR-P(O)(OR'')2 WHEREIN AR IS THE AROMATIC NUCLEUS OF SAID AROYL PEROXIDE AND R'' IS SELCTED FROM THE GROUP CONSISTING OF HYDROGEN AND R.
Claim 2
Independent Claim
97 words
THE METHOD WHICH COMPRISES REACTING (A) AN AROYL PEROXIDE AND (B) A PHOSPHITE HAVING THE FORMULA HP(O)(OR)2 WHEREIN R IS HYDROCARBYL CONTAINING FROM 1 TO ABOUT 30 CARBON ATOMS OF THE GROUP CONSISTING OF ALKYL, CYCLOALKYL, ARALKYL AND ARYL IN THE MOLAR RATIO OF PEROXIDE TO PHOSPHITE OF FROM ABOUT 1:1 TO 1:10 AT A TEMPERATURE OF FROM ABOUT 80*C. TO ABOUT 160*C.; AND RECOVERING FROM THE REACTON MIXTURE A COMPOUND HAVING THE FORMULA HOOC-AR-P(O)(OR'')2 WHEREIN AR IS THE AROMATIC NUCLEUS OF SAID AROYL PEROXIDE AND R'' IS SELCTED FROM THE GROUP CONSISTING OF HYDROGEN AND R.
References Cited (Backward Citations)
US2776985A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-04-12 | 1968-10-12 | 1969-04-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-04-12 | 1972-10-12 | 1973-04-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-04-12 | 1976-10-12 | 1977-04-13 | $7700.00 | Window Closed / Lapsed |