Stable sunscreen composition containing dibenzoylmethane derivat

Details Stable sunscreen composition containing dibenzoylmethane derivat Stable sunscreen composition containing dibenzoylmethane derivat

1996-11-21

1998-07-21

Dodson, Shelley A.

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

424 60, 424400, 424401, 514537, 514679, 560 64, 560103, 568331, A61K 742, A61K 3124, A61K 3112

Patent

active

057831734

ABSTRACT:
A sunscreen composition containing a UV-B dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL 1789), and a stabilizer/solubilizer for the dibenzoylmethane derivative selected from formula (I) and formula (II), and mixtures thereof: ##STR1## wherein m=5, 7, 9 or mixtures and n=4, 6, 8 or mixtures; ##STR2## wherein m=5, 7 or mixtures and n=4, 6 or mixtures.
These long branched chain alkyl hydroxybenzoates and long branched chain benzoates having a C.sub.4.sup.+ branch at the 2 position are quite effective in stabilizing the dibenzoylmethane derivative UV-B filter compounds making them more effective; effective for longer periods of time.

REFERENCES:
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patent: 4387089 (1983-06-01), De Polo
patent: 4489057 (1984-12-01), Welters et al.
patent: 4562067 (1985-12-01), Hopp et al.
patent: 5116604 (1992-05-01), Fogel et al.
patent: 5670140 (1997-09-01), Deflandre et al.
Finetex.RTM. Technical Data Sheet, FINSOLV.RTM. TN, Finetex Inc. (New Jersey corporation), 148 Falmouth Avenue, Elmwood Park, NJ 07407.
U.S. Trademark Registration No. 1,730,483 registered Nov. 10, 1992 for the mark "FINSOLV", Finetex Inc., (New Jersey corporation), 148 Falmouth Avenue, Elmwood Park, NJ 07407.

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