UV-absorbing lipid vesicles

Details UV-absorbing lipid vesicles UV-absorbing lipid vesicles

2006-12-12

2006-12-12

Davis, Brian (Department: 1621)

Drug, bio-affecting and body treating compositions

Preparations characterized by special physical form

Liposomes

C564S163000, C564S168000, C564S170000, C564S182000, C514S619000, C514S622000

Reexamination Certificate

active

07147866

ABSTRACT:
Highly effective vesicular compositions from UV-absorbing lipids are described in the present invention. Combination of UV-absorbing property and the vesicular delivery system results in higher levels of photoprotection to skin and hair. The vesicular compositions of the present invention are made from cationic UV-absorbing lipids of Formula I wherein,ArCO is selected from cinnamoyl, p-methoxy cinnamoyl, p-N,N-dimethylamino benzoyl and combinations thereof, R1is selected from saturated or unsaturated alkyl group with carbons ranging from C10to C22.

REFERENCES:
patent: 5427773 (1995-06-01), Chaudhuri et al.
patent: 5451394 (1995-09-01), Chaudhuri et al.
patent: 5601811 (1997-02-01), Gallagher et al.
patent: 6613340 (2003-09-01), Koshti et al.

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