Method of producing p-isobutylstyrene and a starting compound th

Details Method of producing p-isobutylstyrene and a starting compound th Method of producing p-isobutylstyrene and a starting compound th

1985-07-10

1989-05-02

Davis, Curtis R.

Chemistry of hydrocarbon compounds

Compound or reaction product mixture

Aromatic

585319, 585320, 585426, 585439, 585469, C07C 1512

Patent

active

048270652

ABSTRACT:
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.degree. 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.

REFERENCES:
patent: 3002034 (1961-09-01), Shulz
patent: 3939218 (1976-02-01), Strong
Hoffenberg et al., J. Chem. Eng. Data, 9(1), 104-6, (1964).
Bataafsche, Chemical Abstracts, 55, 5431h, (1959).
Reilly et al., Chemical Abstracts, 22, 3625.sup.9, (1928).

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