METHOD OF PRODUCING P-ISOBUTYLSTYRENE AND A STARTING COMPOUND THEREFOR

摘要

A method for producing p-isobutylstyrene which is characterized in that starting materials are inexpensive, processes are easy to be done and products are highly pure. The method comprises the step of catalytically cracking 1,1-bis(p-isobutylphenyl)ethane at temperatures in the range of 200 to 650.degree.C in the presence of a protonic acid catalyst and/or a solid acid catalyst to produce p-isobutylstyrene and isobutylbenzene, and at least a portion of said isobutylbenzene is recycled to produce said 1,1-bis(p-isobutylphenyl)ethane by reaction with acetaldehyde in the presence of sulfuric acid.