Preparation of 5-tert-butyl-metaxylene using a solid active...

Details Preparation of 5-tert-butyl-metaxylene using a solid active... Preparation of 5-tert-butyl-metaxylene using a solid active...

2005-09-06

2005-09-06

Dang, Thuan Dinh (Department: 1764)

Chemistry of hydrocarbon compounds

Aromatic compound synthesis

By condensation of entire molecules or entire hydrocarbyl...

Reexamination Certificate

active

06939998

ABSTRACT:
Alkylation of metaxylene with isobutylene using a solid active clay catalyst produces 5-tert-butyl-metaxylene with high isomer selectivity with respect to 4-tert-butyl-metaxylene. The process is controlled to extend catalyst life and significantly reduce environmentally unfriendly waste.

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patent: 1 227 419 (1971-04-01), None
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Article by Ghosh, Swapan Kumar; Sharma, Man Mohan published in Ind. Eng. Chem. Res., dated 1992; vol. 31, No. 1; pp. 445-449 entitled Separation of m- and p-xylene via selective alkylation/dealkylation—transalkylation.

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