Methods of preparing an intermediate oxidation product from a hydrocarbon by utilizing an activated initiator

Patent 5824819 Issued on October 20, 1998. Estimated Expiration Date:

May 21, 2017. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.

Abstract Claims Description Full Text

Patent References

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Inventors

Assignee

Twenty-First Century Research Corporation

Application

No. 861176 filed on 05/21/1997

US Classes:

562/529, Two stage oxidation from hydrocarbon562/410, Nitrogen containing oxidant562/412, Air, oxygen, or ozone oxidant562/413, Multistage562/417, Initiator or promoter used with catalyst562/531, Of aldehyde562/543Alicyclic

Examiners

Primary: Barts, Samuel
Assistant: Keys, Rosalynd

Attorney, Agent or Firm

Seed and Berry LLP

Foreign Patent References

0439007A2 EP 07/21/1991
0751105A2 EP 01/21/1997
4426132A1 DE. 01/21/1996
45-002374 JP. 06/21/1970
415172 GB 08/21/2013
738808 GB 10/21/2013
864106 GB 03/21/1961
1143213 GB 02/21/1969
2014473 GB 08/21/1979
WO96/03365 WO. 02/21/1996

International Classes

C07C 051/245
C07C 051/16
C07C 051/255

Abstract

Methods for oxidizing a hydrocarbon to an intermediate oxidation product by utilizing an activated initiator. The initiator is activated by partially oxidizing a first mixture of the initiator and a hydrocarbon, which mixture contains a rather large amount of initiator. The first mixture may even be just initiator. The first mixture, after the partial oxidation, is mixed with a second mixture containing hydrocarbon and a smaller amount of initiator. The second mixture may even contain no initiator at all. The oxidation is continued to a desired degree. Preferably, at least one of the two mixtures, and even more preferably both reaction mixtures contain an oxidation catalyst and an acidic solvent.

Other References

E. Sorribes et al., "Formacion de neuvas fases en el proceso de obtencion de acido adipico: causas y efectos que provocan," Rev. R. Acad. Cienc. Exactas, Fis. Nat. Madrid (1987), 81(1), 233-5 (+English language translation)
U.S. application No. 08/587,967, Dassel et al., filed Jan 17, 1996
U.S. application No. 08/812,847, Dassel et al., filed Mar. 6, 1997
U.S. application No. 08/824,992, Dassel et al., filed Mar. 27, 1997
U.S. application No. 08/477,195, Dassel et al., filed Jun. 7, 199