Preparation method

Chemistry of hydrocarbon compounds – Plural serial diverse syntheses – To produce aromatic

Reexamination Certificate

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Details

C585S469000

Reexamination Certificate

active

06989469

ABSTRACT:
The invention pertains to a method of preparing styrene or substituted styrene involving (1) converting a mixture containing alkylbenzene hydroperoxide or substituted alkylbenzene hydroperoxide to a mixture containing phenyl alkanol or substituted phenyl alkanol and (2) dehydrating the phenyl alkanol or substituted phenyl alkanol, characterized by oxidizing an alkene to an alkylene oxide in step (1) in the presence of a heterogenous catalyst and dehydrating the phenyl alkanol or substituted phenyl alkanol in step (2) in the presence of a homogenous dehydration catalyst to obtain styrene or substituted styrene.

REFERENCES:
patent: 5210354 (1993-05-01), Dubner et al.
patent: 345856 (1989-12-01), None
patent: 569.248 (1996-02-01), None
patent: 1.239.185 (1971-07-01), None
patent: 8133995 (1996-05-01), None
International Search Report. dated Dec. 4, 2003.

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