Alkylation of aromatic compounds to alkylates enriched in the li

Details Alkylation of aromatic compounds to alkylates enriched in the li Alkylation of aromatic compounds to alkylates enriched in the li

1989-03-14

1991-04-02

Gray, Bruce

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

Organic compounds

Oxygen containing

568 27, 568 29, 568 33, 568 34, 568 36, 568 37, 568 53, 568 57, 568 58, 568 68, 568707, 585452, 585453, C07C 4100

Patent

active

050048414

ABSTRACT:
Aromatic compounds, such as benzene or biphenyl, are alkylated with an alkylating agent having from one to eight carbons atoms, such as propylene, in the presence of an acidic mordenite zeolite catalyst under conditions sufficient to produce a mixture of substituted aromatic compounds enriched in the linear alkylated isomers, such as p-diisopropylbenzene or p,p'-di(isopropyl)biphenyl, respectively. The novel acidic mordenite catalyst is characterized by its silica/alumina molar ratio, its porosity, and a Symmetry Index. The p,p'-disubstituted isomers of aromatic compounds are useful as monomers in the preparation of thermotropic, liquid crystal polymers.

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