Solubilizing agents/solvents for organic UV filters

Details Solubilizing agents/solvents for organic UV filters Solubilizing agents/solvents for organic UV filters

2005-04-14

2008-12-16

Padmanabhan, Sreeni (Department: 1616)

Drug, bio-affecting and body treating compositions

Topical sun or radiation screening, or tanning preparations

C424S401000, C514S292000

Reexamination Certificate

active

07465438

ABSTRACT:
The invention relates to the use of compounds of the general formula (I)whereinR, R′=H, C1-5-hydrocarbon radical, —O—C1-5-oxyhydrocarbon radical and are identical or different,R1, R2, R3=H, C1-5-hydrocarbon radical and are identical or different,X, Y=—O—; —O—C(O)—; —(O)C—O— and are identical or different,A=Aα=—O—C(O)—O—; Aβ=R4—CH2C(CH2—)3, Aγ=—C(H)-isopropyl, R4=R4δ=—CH3; R4ε=—[CH2—CH(R1)]e—(Y)d—(CH2)c-Ph(R)a,a, b=1 to 5 and are identical or different,c, k=0 to 5 and are identical or different,d, h=0 or 1 and are identical or different,e, g=0 or 1 and are identical or different,f=0 or 1,m=1 to 3,n=0 or 1,as solubilizing agents/solvents for dissolving organic UV filters.

REFERENCES:
patent: 5783173 (1998-07-01), Bonda et al.
patent: 7166275 (2007-01-01), Bertz et al.
Pathak, Madhu, “Sunscreens: Topical and Systemic Approaches for Protection of Human Skin Against Harmful Effects of Solar Radiation”, Continuing Medical Education Series, J. Am. Acad. Dermat, 7: 3 (Sep. 1982) p. 285,291).

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