Title:
【発明の名称】パラ置換異性体の豊富なアルキレートへの芳香族化合物のアルキル化
Document Type and Number:
Japanese Patent JP2688430
Kind Code:
B2
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 min -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 min -disubstituted isomers of aromatic compounds are useful as monomers in the preparation of thermotropic, liquid crystal polymers.
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Inventors:
Guoshou John Lee
Stephen C. Rock
Joseph J. Mage
Juan M. Gursis
Stephen C. Rock
Joseph J. Mage
Juan M. Gursis
Application Number:
JP29373488A
Publication Date:
December 10, 1997
Filing Date:
November 22, 1988
Export Citation:
Assignee:
The Dow Chemical Company
International Classes:
B01J29/18; C07B31/00; C07B37/02; C07B37/04; C07B61/00; C07C1/00; C07C2/66; C07C2/86; C07C15/00; C07C17/00; C07C17/26; C07C17/266; C07C25/02; C07C25/13; C07C25/18; C07C27/00; C07C37/14; C07C41/00; C07C41/30; C07C39/17; C07C43/205; C07C43/263; C07C67/00; C07C313/00; C07C319/12; C07C319/20; C07C321/24; C07C321/28; C07C323/20; C07C323/65; (IPC1-7): C07C2/66; C07B37/02; C07B37/04; C07C2/86; C07C15/00; C07C17/26; C07C25/02; C07C25/13; C07C25/18; C07C37/14; C07C39/17; C07C43/263; C07C319/12; C07C319/20; C07C321/24; C07C323/20; C07C323/65
Attorney, Agent or Firm:
Aoki Akira (3 outside)