Drug – bio-affecting and body treating compositions – Topical sun or radiation screening – or tanning preparations
Patent
1999-03-25
1999-11-30
Dodson, Shelley A.
Drug, bio-affecting and body treating compositions
Topical sun or radiation screening, or tanning preparations
60400, 60401, A61K 742, A61K 744, A61K 700
Patent
active
059937890
ABSTRACT:
A sunscreen composition containing a UV-A dibenzoylmethane derivative, such as 4-(1,1-dimethylethyl)-4'-methoxydibenzoylmethane (PARSOL.RTM. 1789), and a stabilizer for the dibenzoylmethane derivative having formula (I) or (II), or mixtures: ##STR1## wherein each R.sup.1, same or different, is an alkyl group having 1 to 22 carbon atoms, a diol having the structure HO--R.sup.2 --OH, or a polyglycol having the structure HO--R.sup.3 --(--O--R.sup.2 --).sub.m --OH, wherein R.sup.2 and R.sup.3, same or different, are each an alkylene group, straight chain or branched, having 1 to 6 carbon atoms, and wherein m and n are each 1 to about 100, or a mixture thereof. These diesters and polyesters of formula (I) or (II) are quite effective in stabilizing the dibenzoylmethane derivative UV-A filter compounds making them more effective, and effective for longer periods of time.
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"Photostable Cosmetic Light Screening Composition", Author: Anon. Organization, UK Publication Source, Research Disclosure (1999), 418(Feb.), P175 (No. 41803). Identifier-Coden RSDSBB ISSN 0374-4363Publisher Kenneth Mason Publications Ltd. Patent Information.
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Bonda Craig A.
Hessefort Yin Z.
Marinelli Peter J.
Trivedi Jagdish
Wentworth Gary
Dodson Shelley A.
The C.P. Hall Company
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