C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/681.6
C07C 15/16 (2006.01) C07C 4/00 (2006.01) C07C 15/46 (2006.01) C07C 51/29 (2006.01)
Patent
CA 1252120
ABSTRACT OF THE DISCLOSURE 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°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.
486723
Hirano Ryotaro
Matsumura Yasuo
Nomura Hideki
Sato Atsushi
Shimizu Isoo
Gowling Lafleur Henderson Llp
Nippon Petrochemicals Co. Ltd.
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