Preparation of 2,4,6-triisopropylphenol

Details Preparation of 2,4,6-triisopropylphenol Preparation of 2,4,6-triisopropylphenol

1980-04-09

1981-06-23

Lone, Werren B.

Organic compounds -- part of the class 532-570 series

Organic compounds

Oxygen containing

C07C 3711, C07C 3906

Patent

active

042752485

ABSTRACT:
A process for introducing a plurality of alkyl groups into the aromatic ring of a hydroxy-substituted aromatic compound, whereby the available ortho sites are completely alkylated, comprises contacting said aromatic compound with olefin in the presence of a fluorided alumina as catalyst and recovering the product. The products of the process of this invention possess substantial antioxidant properties. A particular composition which shows enhanced resistance to oxidation and lowered gum formation comprises a major amount of a liquid petroleum product and from about 5 to about 500 parts per million by weight of a polyisopropyl hydroxy aromatic compound in which the available ortho positions are alkylated.

REFERENCES:
patent: 3367981 (1968-02-01), Napolitano
patent: 3670030 (1972-06-01), Sparks
patent: 3928471 (1975-12-01), Suda et al.
patent: 3929912 (1975-12-01), Hervert

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