Process for the preparation of 2-hydroxy-4-(hydroxyalkoxy)-benzo

Details Process for the preparation of 2-hydroxy-4-(hydroxyalkoxy)-benzo Process for the preparation of 2-hydroxy-4-(hydroxyalkoxy)-benzo

1989-11-21

1990-12-18

Reamer, James H.

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

Organic compounds

Oxygen containing

C07C 4571

Patent

active

049787977

ABSTRACT:
The present invention relates to an improved process for the preparation of 2-hydroxy-4-(hydroxyalkoxy)-benzophenone. More particularly the invention is directed to the oxyalkylation of 2,4-dihydroxy benzophenone, using C.sub.2 to C.sub.4 alkylene oxides in the presence of a basic catalyst and water. Such products are useful as ultraviolet light absorbers.

REFERENCES:
patent: 3617599 (1972-10-01), Dalbey
patent: 3676471 (1972-07-01), Eggenspagen et al.
patent: 3923901 (1975-12-01), Battin et al.
patent: 4261922 (1981-04-01), Kem
patent: 4885396 (1989-12-01), Hahn et al.

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