Micropigment mixtures

Details Micropigment mixtures Micropigment mixtures

2008-04-15

2008-04-15

Dodson, Shelley A. (Department: 1616)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C424S060000, C424S400000, C424S401000

Reexamination Certificate

active

07357918

ABSTRACT:
Disclosed is a UV absorber mixture, comprising (a) 1% to 60% of a micronised UV broadband absorber of formula: Formula (I); wherein R1is C1-C12alkyl; or phenyl-substituted C1-C12alkyl; and (b) 1% to 60% by weight of a water dispersible and/ir oil-dispersible coated titanium di-oxide. The UV absorber mixture shows synergistic effect with respect to the UPF

REFERENCES:
patent: 6416748 (2002-07-01), Candau et al.
patent: 2001/0028886 (2001-10-01), Robert et al.
patent: 2002/0155073 (2002-10-01), Fankhauser et al.
patent: 1068866 (2001-01-01), None
patent: 1093798 (2001-04-01), None
Li Guo-hui et al., Chemistry World, “Surface Modification of Nanosized Titanium Dioxide Particles as Ultraviolet Absorbent in Cosmetics”, 2000(2), pp. 59-63.
Chem. Abstract 137:24104 of Research Disclosure 449030 (2001).

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