Antioxidant process using formaldehyde

Details Antioxidant process using formaldehyde Antioxidant process using formaldehyde

1981-05-14

1982-07-20

Lone, Werren B.

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

Organic compounds

Oxygen containing

568718, C07C 3912

Patent

active

043407676

ABSTRACT:
Small amounts of paraformaldehyde and a carboxylic acid are added to a reaction mixture of trialkylbenzene and 3,5-dialkyl-4-hydroxybenzyl alcohol to thereby increase the yield of the product: trialkyl-tris(3,5-dialkyl-4-hydroxybenzyl)benzene. The reaction catalyst, sulfuric acid or a Friedel-Crafts catalyst, is not adversely affected by the additional ingredients.

REFERENCES:
patent: 2905737 (1959-09-01), Webb
patent: 2929849 (1960-03-01), Webb
patent: 3026264 (1962-03-01), Rocklin et al.
patent: 3309339 (1967-03-01), Barton et al.
patent: 3644538 (1972-02-01), Starnes
patent: 3689572 (1972-09-01), Ruppert et al.
patent: 3925488 (1975-12-01), Shin
patent: 4259534 (1981-03-01), Gurvich et al.

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