Drug – bio-affecting and body treating compositions – Preparations characterized by special physical form – Cosmetic – antiperspirant – dentifrice
Patent
1999-03-26
2000-03-28
Dodson, Shelley A.
Drug, bio-affecting and body treating compositions
Preparations characterized by special physical form
Cosmetic, antiperspirant, dentifrice
424 63, 424 64, 424400, 514412, 514421, A61K 700, A61K 7021, A61K 7025, A61K 3140
Patent
active
060428422
ABSTRACT:
The present invention relates to cosmetic compositions, in particular make-up cosmetic compositions, comprising a novel red pigment with an intense and saturated color which does not generate free radicals. This novel pigment is a diketopyrrolopyrrole (DPP) of formula: ##STR1## in which R.sub.1 and R.sub.2 independently represent a hydrogen atom, a C.sub.1 to C.sub.18 alkyl radical, a C.sub.3 to C.sub.12 alkenyl radical, a C.sub.2 to C.sub.5 alkoxycarbonyl radical or a phenyl radical which is optionally substituted by a halogen and R.sub.3 and R.sub.4 independently represent a hydrogen atom, a C.sub.1 to C.sub.18 alkyl radical, a C.sub.1 to C.sub.4 alkoxy radical, a halo radical or a phenyl radical, or a --SO.sub.3 M group with M being a hydrogen atom, a metal atom or an ammonium group, it being possible for the alkyl, alkenyl and alkoxy radicals to be linear or branched. By virtue of this pigment, it is possible to protect the skin, lips and keratinous fibers from free radicals without using antioxidizing agents in the composition.
REFERENCES:
J.-B. Galey et al., "Ethylene formation from methionine as a method to evaluate oxygen free radical scavenging and metal inactivation by cosmetics", International Journal of Cosmetic Science, vol. 13, No. 2, Apr. 1991, pp. 65-78.
English language Derwent Abstract of EP 0 787 730.
English language Derwent Abstract of EP 0 787 731.
Lemann Patricia
Simon Jean-Christophe
Dodson Shelley A.
L'Oreal S.A.
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