Title:
AFTERRTREATMENT OF RETURNED CUMOL IN HOCK*S PHENOL SYNTHESIS
Document Type and Number:
Japanese Patent JPS55113725
Kind Code:
A
Abstract:
1. A method of working-up the unreacted cumene obtained in Hock's phenol synthesis, characterized in that the unreacted cumene containing 1-30 % by weight of alpha-methylstyrene is brought into contact with a catalyst at a temperature of 60-140 degrees C and for a contact period of 5-200 minutes, the catalyst being obtained in the usual manner by treating dried and pulverized bentonite with concentrated sulpluric acid without subsequent scrubbing, the amount of sulphuric acid being 0.5-1.5 equivalents per equivalent of bentonite based on the ion exchange capacity of the bentonite ; and the amount of catalyst being 0.5-50 % by weight, based on the total weight of the reaction mixture, whereby the alpha-methylstyrene is completely converted resulting in high yields of 1-phenyl-1.3.3.-trimethylindan.
Inventors:
HANSU YOOZEFU RATAIKUTSUAAKU
Application Number:
JP1795480A
Publication Date:
September 02, 1980
Filing Date:
February 18, 1980
Export Citation:
Assignee:
HUELS CHEMISCHE WERKE AG
International Classes:
B01J21/00; C07B61/00; C07C1/00; C07C7/177; C07C2/42; C07C13/465; C07C15/085; C07C27/00; C07C37/08; C07C67/00; (IPC1-7): B01J21/00; C07C2/42; C07C13/465; C07C37/08