Benzophenones containing an ester functional group and their use

Details Benzophenones containing an ester functional group and their use Benzophenones containing an ester functional group and their use

1992-07-24

1994-01-25

Hoke, Veronica P.

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

524296, 524299, 524336, 524337, 560 84, 560 85, 560127, 560193, 560221, C08K 513, C07C 8990, C07C 69773, C07C 6975, C07C 69353

Patent

active

052816451

ABSTRACT:
The present invention relates to new hydroxybenzophenones containing an ester functional group and to the use of these compounds as UV absorbers in organic polymers. More precisely, the new hydroxybenzophenones are 1,3-di(4-benzoyl-3-hydroxyphenoxy)-2-propanol carboxylates which preferably have a molecular mass of at least 500.
These benzophenones can be employed as anti-UV agents in organic polymers, either by themselves or jointly with known benzophenones of lower molecular mass, such as 2-hydroxy-4-alkoxybenzophenones.

REFERENCES:
patent: 3580927 (1971-05-01), Wear
patent: 3644485 (1972-02-01), Lappin et al.
patent: 4261912 (1981-04-01), Tracy
patent: 4824892 (1989-04-01), Eiglmeier et al

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