Alkylation of polycyclic aromatic compounds to alkylates...

Details Alkylation of polycyclic aromatic compounds to alkylates... Alkylation of polycyclic aromatic compounds to alkylates...

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252/14, 260/652,

B01J 29/18 (2006.01) C07C 2/66 (2006.01) C07C 2/86 (2006.01) C07C 15/02 (2006.01) C07C 15/14 (2006.01) C07C 37/14 (2006.01) C07C 39/15 (2006.01) C07C 41/30 (2006.01) C07C 43/275 (2006.01)

Patent

CA 1322744

ABSTRACT Aromatic compounds, such as benzene or biphenyl, are alkylated with an alkylating agent, such as propylene, in the presence of an acidic mordenite zeolite catalyst under conditions sufficient to produce a mixture of substituted polycyclic aromatic compounds enriched in the para alkylated isomers, such as p- diisopropyl-benzene or p,p'-di(isopropyl)biphenyl, respectively. The novel acidic mordenite catalyst is characterized by its silica/alumina molar ratio, its porosity, and 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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