Production of dialkylbenzenes

Details Production of dialkylbenzenes Production of dialkylbenzenes

2008-04-22

2008-04-22

Dang, Thuan Dinh (Department: 1797)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By alkyl or aryl transfer between molecules, e.g.,...

C585S323000

Reexamination Certificate

active

10946553

ABSTRACT:
The invention relates to a process for producing a desired dialkylbenzene isomer having a formula R2C6H4, where R is an alkyl substituent, by contacting a polyalkylbenzene compound of formula RnC6H6-n, where n is an integer between 2 and 4, with a monoalkylbenzene compound of formula RC6H5in the presence of a molecular sieve catalyst under reaction conditions sufficient to produce said dialkybenzene isomer. The preferred molecular sieve catalysts have pores or surface cavities greater than 5.6 Angstroms in diameter and/or an X-ray diffraction pattern including d-spacing maxima at 12.4±0.25, 6.9±0.15, 3.57±0.07, and 3.42±0.07 Angstrom.

REFERENCES:
patent: 2848514 (1958-08-01), De Keizer et al.
patent: 3763259 (1973-10-01), Hervert
patent: 4347393 (1982-08-01), Miki
patent: 4375575 (1983-03-01), Slaugh
patent: 4822943 (1989-04-01), Burress
patent: 5329059 (1994-07-01), Marler
patent: 5929296 (1999-07-01), Merlen et al.
patent: 6037512 (2000-03-01), Benazzi et al.
patent: 6049018 (2000-04-01), Calabro et al.
patent: 6512154 (2003-01-01), Magne-Drisch et al.
patent: 2003/0125591 (2003-07-01), Weber et al.
patent: 1 106 592 (2001-06-01), None
patent: 755956 (1956-11-01), None
patent: 786305 (1957-11-01), None
Abstract, NL 85,204, entitled “Transalkylation of Alkylated Benzenes”, dated May 15, 1957.

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