Chemistry of hydrocarbon compounds – Aromatic compound synthesis – Having alkenyl moiety – e.g. – styrene – etc.
Patent
1989-12-19
1991-01-01
Manoharan, Virginia
Chemistry of hydrocarbon compounds
Aromatic compound synthesis
Having alkenyl moiety, e.g., styrene, etc.
203 9, 203 41, 203 73, 203 80, 585443, 585446, 585452, 585804, 585805, 585807, 585820, B01D 310, B01D 334, C07C 705
Patent
active
049820346
ABSTRACT:
A process to purify t-butylstyrene from product containing substantial amounts of t-butylethylbenzene and small amounts of alkenyl-substituted styrene impurities by a combination of vacuum fractionation and vacuum evaporation in the presence a polymerization inhibitor, and treatment with a carbonaceous adsorbent. Such a product to be purified can be prepared by catalytically, oxidatively dehydrogenating over an alkaline pyrophosphate in the vapor phase t-butylethylbenzene containing about 95 wt. % or more of the p-isomer which can be made by alkylating ethylbenzene with isobutylene in a controlled manner in the presence of cooled concentrated sulfuric acid.
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Kullberg Marc L.
Lane Lori B.
Moore Eric J.
Amoco Corporation
Magidson William H.
Manoharan Virginia
Medhurst Ralph C.
Riley Reed F.
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