Patent US3692810A successfully refreshed from Google Patents.
US3692810A
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Catalytic oxidation of olefins to yield carboxylic acids
Assignee: ConocoPhillips Co
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Filing: 1971-02-22
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Granted: 1972-09-19
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Expires: 1991-02-22
Abstract
Abstract Olefins are oxidized with a mineral acid to carboxylic acids by dissolving the olefin in a hydrophobic solvent, and contacting the olefin solution with an oxidation system which comprises a mineral acid, an aqueous solution of a hexavalent chromium compound and a ruthenium compound. The reaction mixture is heated to a temperature of from about 45* C to about 100* C.
Inventors
- 👤 Paul H Washecheck
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 21:57
CPC Classifications
C; C07; C07C; C07C51/00; C07C51/16
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
20 words
The method defined in claim 1 wherein said contact is carried out at the reflux temperature of the reaction mixture.
Claim 2
Dependent Claim
36 words
The method defined in claim 1 wherein the amount of ruthenium in said oxidation system is from about 0.001 mole to about 0.01 mole per mole of the olefin with which the oxidation system is contacted.
Claim 3
Dependent Claim
24 words
The method defined in claim 1 wherein said mineral acid is selected from the group consisting of sulfuric acid, nitric acid, and perchloric acid.
Claim 4
Dependent Claim
37 words
The method defined in claim 1 wherein the amount of hexavalent chromium in said oxidation system is from about 1 mole to about 50 moles per mole of the olefin with which the oxidation system is contacted.
Claim 5
Dependent Claim
19 words
The method defined in claim 1 wherein said hydrophobic solvent is an organic liquid which is immiscible with water.
Claim 6
Dependent Claim
21 words
The method defined in claim 5 wherein said hexavalent chromium compound is chromium trioxide and said catalytic material is ruthenium dioxide.
Claim 7
Dependent Claim
36 words
The method defined in claim 7 wherein the amount of ruthenium in said oxidation system is from about 0.001 mole to about 0.01 mole per mole of the olefin with which the oxidation system is contacted.
Claim 8
Dependent Claim
12 words
The method defined in claim 8 wherein the olefin is a 1-olefin.
Claim 9
Dependent Claim
19 words
The method defined in claim 9 wherein said hydrophobic solvent is an organic compound which is immiscible with water.
Claim 10
Dependent Claim
24 words
The methOd defined in claim 10 wherein said mineral acid is selected from the group consisting of sulfuric acid, nitric acid, and perchloric acid.
References Cited (Backward Citations)
US3076032A
Cited
US3409649A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-09-19 | 1976-03-20 | 1976-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-09-19 | 1980-03-20 | 1980-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-09-19 | 1984-03-20 | 1984-09-19 | $7700.00 | Window Closed / Lapsed |