Chemical process and composition

Chemistry of inorganic compounds – Oxygen or compound thereof – Peroxide

Reexamination Certificate

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Details

C252S182120, C423S589000, C423S590000

Reexamination Certificate

active

07001584

ABSTRACT:
The invention relates to a process for production of hydrogen peroxide according to the anthraquinone process including alternate hydrogenation and oxidation of one or more quinones selected from anthraquinones and/or tetrahydro anthraquinones in a working solution comprising at least one quinone solvent and at least one hydroquinone solvent, wherein said at least one quinone solvent comprises isodurene in an amount from 15 to 100 wt %. The invention also relates to a composition useful as a working solution at production of hydrogen peroxide.

REFERENCES:
patent: 3328128 (1967-06-01), Kabisch
patent: 3699217 (1972-10-01), Schreyer
patent: 3714342 (1973-01-01), Kabisch
patent: 3742061 (1973-06-01), Kabisch
patent: 3789114 (1974-01-01), Giesselmann et al.
patent: 3952089 (1976-04-01), Kabisch et al.
patent: 3965251 (1976-06-01), Shin et al.
patent: 4349526 (1982-09-01), Goor et al.
patent: 4552748 (1985-11-01), Berglin
patent: 4800073 (1989-01-01), Bengtsson
patent: 4800074 (1989-01-01), Bengtsson
patent: 5063043 (1991-11-01), Bengtsson
patent: 5827493 (1998-10-01), Ledon
patent: 1524883 (1978-09-01), None
Wayne T. Hess, “Hydrogen Peroxide”; Kirk-Othmer Encyclopedia of Chemical Technology Fourth Edition, vol. 13, 1995, pp. 961-995, no month.

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