Process for preparing styrene

Details Process for preparing styrene Process for preparing styrene

2007-10-30

2007-10-30

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

Having alkenyl moiety, e.g., styrene, etc.

C585S436000

Reexamination Certificate

active

11001463

ABSTRACT:
A process for preparing styrene by contacting a gaseous feed which contains 1-phenylethanol and at least 0.1% wt of phenol and/or ethylphenol with a heterogeneous dehydration catalyst in the presence of at least 0.40% wt of benzylalcohol and at a molar ratio of benzylalcohol to total amount of phenol and ethylphenol of at least 0.8.

REFERENCES:
patent: 3526674 (1970-09-01), Becker et al.
patent: 5639928 (1997-06-01), Dubner et al.
patent: 2004/0010172 (2004-01-01), Horton et al.
patent: 1077916 (2001-02-01), None
patent: 1343177 (1971-09-01), None
Written Opinion of the International Searching Authority dated May 23, 2005.
International Search Report dated Apr. 27, 2005.
TS1030 - Patent application No. EP 03251123.0 filed Feb. 25, 2003.

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