US3666815A
Expired / Lapsed
US
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Method for the catalytic oxidation of alkyl aromates
Assignee: Nederlandse Organisatie voor Toegepast Natuurwetenschappelijk Onderzoek TNO
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Filing: 1970-05-18
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Granted: 1972-05-30
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Expires: 1990-05-18
Abstract
Abstract This invention relates to the oxidation of alkyl aromatic compounds with an alkyl-substituted phthalocyanine as a catalyst and with methods for the preparation of this catalyst.
Inventors
- 👤 Paulus I T Scheltus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 09:48
CPC Classifications
C; C07; C07C; C07C409/00; C07C409/16; C07C29/00; C07C29/48; C07C29/50; C07C407/00; C07C409/02; C07C409/04; C07C409/08; C07C409/10; C07C409/12; C07C45/00; C07C45/27; C07C45/32; C07C45/33; C07C45/34; C07C45/36
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
19 words
The process as defined by claim 1 wherein the alkyl benzene compound is ethylbenzene, cumene, 1,3-di-isopropylbenzene, 1,4-di-isopropylbenzene or para-cymene.
Claim 2
Dependent Claim
16 words
The process as defined by claim 1 wherein the metal of the oxidation catalyst is iron.
Claim 3
Dependent Claim
16 words
The process as defined by claim 1 wherein the metal of the oxidation catalyst is manganese.
Claim 4
Dependent Claim
16 words
The process as defined by claim 1 wherein the metal of the oxidation catalyst is copper.
Claim 5
Dependent Claim
25 words
The process as defined by claim 1 wherein the oxidation reaction is conducted at a temperature of from about 10* C. to about 130* C.
Claim 6
Dependent Claim
30 words
The process as defined by claim 1 wherein the amount of oxidation catalyst is from about 1 to about 400 milligrams thereof per 100 milliliters of the alkyl benzene compound.
References Cited (Backward Citations)
GB801387A
Cited
US3073867A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-05-30 | 1975-11-29 | 1976-05-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-05-30 | 1979-11-29 | 1980-05-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-05-30 | 1983-11-29 | 1984-05-30 | $7700.00 | Window Closed / Lapsed |