Method for producing aromatic compound isomers

Details Method for producing aromatic compound isomers Method for producing aromatic compound isomers

2006-08-15

2006-08-15

Price, Elvis O. (Department: 1621)

Organic compounds -- part of the class 532-570 series

Organic compounds

Halogen containing

C570S211000

Reexamination Certificate

active

07091389

ABSTRACT:
In a process of producing an aromatic compound isomer substituted with alkyl group(s) and/or halogen atom(s), through adsorptive separation by the use of a zeolite-containing adsorbent and a desorbent, the desorbent is, after having been processed for removing impurities from it, supplied to the adsorptive separation step. In the process, the absorbent used is prevented from being degraded, and its life is prolonged to efficiently separate an aromatic compound isomer mixture into individual isomers.

REFERENCES:
patent: 4962245 (1990-10-01), Kanai et al.
patent: 4996380 (1991-02-01), McCulloch et al.
patent: 0 412 215 (1991-02-01), None
patent: 0 425 740 (1991-05-01), None

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