US2745863A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of alkaryl phosphoric acids
Assignee: ExxonMobil Oil Corp
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Filing: 1952-12-17
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Granted: 1956-05-15
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Expires: 1972-12-17
Abstract
No abstract record available.
Inventors
- 👤 Ferdinand P Otto
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 13:19
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/09; C07F9/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A METHOD FOR PREPARING AN ALKARYL PHOSPHORIC ACID WHICH COMPRISES REACTING TOGETHER (A) 1 MOL OF P205, (B) FROM ABOUT 1 TO ABOUT 3 MOLS OF A HYDROXYAROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, ALPHA-NAPHTHOL, BETA-NAPHTHOL, ORTHO-CRESOL AND CATECHOL AND (C) FROM ABOUT 1 MOL TO ABOUT 3 MOLS PER MOL OF HYDROXYAROMATIC COMPOUND USED OF AN OLEFIN, SAID OLEFIN HAVING FROM 3 TO ABOUT 24 CARBON ATOMS IN THE ALIPHATIC PORTION THEREOF AND BEING SELECTED FROM THE GROUP CONSISTING OF OLEFINS OF THE FORMULAE RRC=CH2, RRC=CHR AND RRC=CRR, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND ALKARYL RADICALS, THE MOLS OF OLEFIN SUPPLIED TO THE REACTION BEING AT LEAST EQUAL TO THE MOLS OF HYDROXYAROMATIC COMPOUND USED, AT A TEMPERATURE OF FROM ABOUT 50* C. TO ABOUT 125* C. AND FOR APERIOD OF TIME SUFFICIENT FOR REACTION TO TAKE PLACE.
Claim 2
Independent Claim
149 words
A METHOD FOR PREPARING AN ALKARYL PHOSPHORIC ACID WHICH COMPRISES REACTING TOGETHER (A) 1 MOL OF P205, (B) FROM ABOUT 1 TO ABOUT 3 MOLS OF A HYDROXYAROMATIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF PHENOL, ALPHA-NAPHTHOL, BETA-NAPHTHOL, ORTHO-CRESOL AND CATECHOL AND (C) FROM ABOUT 1 MOL TO ABOUT 3 MOLS PER MOL OF HYDROXYAROMATIC COMPOUND USED OF AN OLEFIN, SAID OLEFIN HAVING FROM 3 TO ABOUT 24 CARBON ATOMS IN THE ALIPHATIC PORTION THEREOF AND BEING SELECTED FROM THE GROUP CONSISTING OF OLEFINS OF THE FORMULAE RRC=CH2, RRC=CHR AND RRC=CRR, WHEREIN R IS A RADICAL SELECTED FROM THE GROUP CONSISTING OF ALKYL, ARYL AND ALKARYL RADICALS, THE MOLS OF OLEFIN SUPPLIED TO THE REACTION BEING AT LEAST EQUAL TO THE MOLS OF HYDROXYAROMATIC COMPOUND USED, AT A TEMPERATURE OF FROM ABOUT 50* C. TO ABOUT 125* C. AND FOR APERIOD OF TIME SUFFICIENT FOR REACTION TO TAKE PLACE.
References Cited (Backward Citations)
US2214875A
Cited
US2272668A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1959-05-15 | 1959-11-14 | 1960-05-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1963-05-15 | 1963-11-14 | 1964-05-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1967-05-15 | 1967-11-14 | 1968-05-15 | $7700.00 | Window Closed / Lapsed |