| US 7,465,438 B2 | ||
| Solubilizing agents/solvents for organic UV filters | ||
| Christoph Schunicht, Essen (Germany); Burghard Gruning, Essen (Germany); Pawel Grzebyk, Oberhausen (Germany); and Klaus Jenni, Essen (Germany) | ||
| Assigned to Goldschmidt GmbH, Essen (Germany) | ||
| Filed on Apr. 14, 2005, as Appl. No. 11/105,837. | ||
| Claims priority of application No. 10 2004 018 510 (DE), filed on Apr. 14, 2004. | ||
| Prior Publication US 2005/0232877 A1, Oct. 20, 2005 | ||
| Int. Cl. A61K 8/00 (2006.01); A61K 8/18 (2006.01); A61K 8/02 (2006.01); A61K 31/44 (2006.01); A61Q 17/04 (2006.01) | ||
| U.S. Cl. 424—59 [424/401; 514/292] | 15 Claims |
| 1. A method of dissolving organic UV filters comprising:
contacting an organic UV filter with at least one compound of the general formula
 wherein
R, R′ are the same or different and are H, a C1-5-hydrocarbon radical, or a —O—C1-5-oxyhydrocarbon radical,
R1, R2, R3 are the same or different and are H, or a C1-5-hydrocarbon radical,
X, Y are the same or different and are —O—; —O—C(O)—; or —(O)C—O—,
A is Aα which is —O—C(O)—O—; Aβ which is R4—CH2C(CH2—)3, or Aγ which is —C(H)-isopropyl, where R4=R4ε=—[CH2—CH(R1)]e—(Y)d—(CH2)c-Ph(R)a,
a, b are the same or different and are 1 to 5,
c, k are the same or different and are 0 to 5,
d, h are 1,
e, g are the same or different and are 0 or 1,
f is 0 or 1,
m is 1 to 3, and
n is 1.
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