Process for the preparation of diemethyl cumenes

Details Process for the preparation of diemethyl cumenes Process for the preparation of diemethyl cumenes

2005-07-26

2005-07-26

Dang, Thuan D (Department: 1764)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

Reexamination Certificate

active

06921843

ABSTRACT:
The present invention relates to a process for the preparation of dimethylcumenes comprising alkylating a substrate comprising of one or more xylene isomers with an alkylating agent in the presence of a solid acid zeolite catalyst selected from ultrastable zeolite Y (Si/Al=5 to 50) and Beta (Si/Al=10-120), and separating the products formed in vapour phase.

REFERENCES:
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patent: 0439632 (1989-12-01), None
patent: 0371738 (1990-06-01), None
patent: 0538518 (1993-04-01), None
patent: 0940178 (1998-03-01), None
patent: 1069099 (2001-01-01), None
patent: 1069100 (2001-01-01), None

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