Patent US4036890A successfully refreshed from Google Patents.
US4036890A
Expired / Lapsed
US
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Preparation of organic hydroperoxides
Assignee: Veba Oel AG
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Filing: 1965-05-11
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Granted: 1977-07-19
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Expires: 1985-05-11
Abstract
Abstract Improvement in the known process for producing organic cyclic hydroperoxides, which process includes oxidizing a compound of the formula ##STR1## wherein Ar is an aromatic or saturated cycloaliphatic radical and each R is an aliphatic hydrocarbon radical or a hydrogenated bicyclic terpene hydrocarbon hydroperoxide with an oxygen-containing gas at a temperature of about 80°-150° C under a pressure of about atmospheric up to about 10 atms., wherein the product, when produced by this process, has an improved activity on the catalysis of olefin polymerization if the oxidation reaction is halted at the point where the produced hydroperoxide has a concentration in the reaction mass of about one to less than 5%.
Inventors
- 👤 Wilhelm Ester, deceased
- 👤 heir Margarete Ester
- 👤 heir Brigitte Louis nee Ester
- 👤 heir Wolfgang Ester
- 👤 Wilhelm Heitmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 08:46
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/02; C07C409/04; C07C409/08; C07C407/00; C07C409/06; C07C409/10; C07C409/12; C07C409/14; C07C2601/00; C07C2601/12; C07C2601/14; C07C2601/18; C07C2602/00; C07C2602/02; C07C2602/14; C07C2602/18; C07C2602/36; C07C2602/42
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
121 words
In the production of organic cyclic hydroperoxides which comprises oxidizing a compound selected from the group consisting of compounds of the formula: ##STR3## wherein Ar is a member selected from the group consisting of phenyl, cyclohexyl and cycloheptyl, which can be substituted by C 1-5 alkyl and each R is an aliphatic hydrocarbon radical, and compounds of the group consisting of carane, pinane, p-menthane and camphane with an oxygen-containing gas at a temperature of about 80° to 150° C. and a pressure of about atmospheric up to about 10 atmospheres; the improvement which comprises halting said oxidation when the concentration of produced hydroperoxide reaches about 1 to less than 5% by weight in the reaction mixture, and recovering said cyclic hydroperoxide.
Claim 2
Dependent Claim
121 words
In the production of organic cyclic hydroperoxides which comprises oxidizing a compound selected from the group consisting of compounds of the formula: ##STR3## wherein Ar is a member selected from the group consisting of phenyl, cyclohexyl and cycloheptyl, which can be substituted by C 1-5 alkyl and each R is an aliphatic hydrocarbon radical, and compounds of the group consisting of carane, pinane, p-menthane and camphane with an oxygen-containing gas at a temperature of about 80° to 150° C. and a pressure of about atmospheric up to about 10 atmospheres; the improvement which comprises halting said oxidation when the concentration of produced hydroperoxide reaches about 1 to less than 5% by weight in the reaction mixture, and recovering said cyclic hydroperoxide.
Claim 3
Dependent Claim
21 words
The process claimed in claim 1, wherein oxidation is halted at a hydroperoxide concentration of about 3 to 4% by weight.
Claim 4
Dependent Claim
14 words
The process claimed in claim 1, wherein the compound which is oxidized is p-menthane.
Claim 5
Dependent Claim
14 words
The process claimed in claim 1, wherein the compound which is oxidized is diisopropyl-benzene.
Claim 6
Dependent Claim
14 words
The process claimed in claim 1, wherein the compound which is oxidized is cumene.
Claim 7
Dependent Claim
14 words
The process claimed in claim 1, wherein the compound which is oxidized is pinane.
Claim 8
Dependent Claim
14 words
The process claimed in claim 1, wherein the compound which is oxidized is cymene.
Claim 9
Dependent Claim
14 words
Process according to claim 1, which comprises concentrating said oxidation product following said washing.
Claim 10
Dependent Claim
143 words
In the production of organic cyclic hydroperoxide which comprises oxidizing a compound selected from the group consisting of compounds of the formula: ##STR4## wherein Ar is a member selected from the group consisting of phenyl, cyclohexyl, cycloheptyl, which can be substituted by C 1-5 alkyl, and each R is an aliphatic hydrocarbon radical, and compounds of the group consisting of carane, pinane, p-menthane and camphane with an oxygen-containing gas at a temperature of about 80°-150° C. and a pressure of about atmospheric up to about 10 atmospheres, washing the oxidation product with an alkaline agent dispersed in a member selected from the group consisting of water and alcohol, and recovering said cyclohydroperoxide from said washed oxidation product; the improvement which comprises halting said oxidation when the concentration of produced hydroperoxide reaches about one to less than 5% by weight in the reaction mixture.
Claim 11
Dependent Claim
143 words
In the production of organic cyclic hydroperoxide which comprises oxidizing a compound selected from the group consisting of compounds of the formula: ##STR4## wherein Ar is a member selected from the group consisting of phenyl, cyclohexyl, cycloheptyl, which can be substituted by C 1-5 alkyl, and each R is an aliphatic hydrocarbon radical, and compounds of the group consisting of carane, pinane, p-menthane and camphane with an oxygen-containing gas at a temperature of about 80°-150° C. and a pressure of about atmospheric up to about 10 atmospheres, washing the oxidation product with an alkaline agent dispersed in a member selected from the group consisting of water and alcohol, and recovering said cyclohydroperoxide from said washed oxidation product; the improvement which comprises halting said oxidation when the concentration of produced hydroperoxide reaches about one to less than 5% by weight in the reaction mixture.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |