Process for producing a linear trimer of paraisopropenyl phenol

Details Process for producing a linear trimer of paraisopropenyl phenol Process for producing a linear trimer of paraisopropenyl phenol

1978-11-16

1980-05-06

Morgenstern, Norman

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

Organic compounds

Oxygen containing

C07C 3700

Patent

active

042018773

ABSTRACT:
A novel trimer of p-isopropenyl phenol of the structure ##STR1## which is useful as a material or a curing agent for epoxy resins. The linear trimer includes a cis-isomer (m.p. 225.5.degree.-227.degree. C.) and a trans-isomer (m.p. 167.degree.-168.degree. C.). It is prepared by reacting p-isopropenyl phenol or its linear polymer in the presence of an acid catalyst such as sulfuric acid, boron fluoride or activated clay in an aromatic hydrocarbon, halogenated hydrocarbon, substituted aromatic hydrocarbon or aprotic polar solvent (e.g., benzene, carbon tetrachloride, nitrobenzene or dioxane).

REFERENCES:
patent: 2972599 (1961-02-01), Guest et al.
patent: 3137677 (1964-06-01), Bolgiano
patent: 3288864 (1966-11-01), Farnham
patent: 4054611 (1977-10-01), Mimaki et al.

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