Naphthalenemethylenemalonic diesters, and UV absorbers and cosme

Details Naphthalenemethylenemalonic diesters, and UV absorbers and cosme Naphthalenemethylenemalonic diesters, and UV absorbers and cosme

1994-12-23

1996-04-16

Ivy, C. Warren

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

424 60, 514547, 560 82, A61K 742

Patent

active

055080251

ABSTRACT:
The invention relates to UV absorbers and cosmetic compositions containing a naphthalenemethylenemalonic diester represented by the following formula (1): ##STR1## wherein NAP represents a naphthalene group which may optionally have a substituent, and R.sup.1 and R.sup.2 each independently represent a hydrocarbon group, an alkoxyalkyl group, or an alkoxyalkylenoxyalkyl group. The UV absorbers and the cosmetic compositions of the invention exhibit excellent ultraviolet ray absorbing action, and are stable to light.

REFERENCES:
patent: 3981882 (1976-09-01), Meyer
Kharas G. B, Watson K. "New Copolymers of Styreue with Some Trisubstituted Ethylenes". Macromolecules 22 3871-3877 (1989).
Journal of the American Chemical Society, vol. 107, No. 25, pp. 7744-7756, Dec. 11, 1985, Howard E. Zimmerman, et al. "Rapidly Rearranging Excited States of Bichromophoric Molecules-Mechanistic and Exploratory Organic Photochemistry".

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