Patent · US Active

Use of benzotriazole derivatives for photostabilisation

US8361446B2 · kind B2 · utility

9Cited by

3References

12Claims

0Family size

Assignee

BASF SE

Inventors

Stefan Muller · Weil am Rhein, DE
Jochen Giesinger · Weil am Rhein, DE
Thomas Ehlis · Glückstadt, DE
Bernd Herzog · Weil am Rhein, DE
Peter König · Feldkirch, AT
Gilbert Kreyer · Saint-Louis, FR
Katja Quass · Rheinfelden (Baden), DE

Key dates

Filing date	Apr 20, 2006
Grant date	Jan 29, 2013
Priority date	—
Expiry date	Feb 6, 2029

Classification

Technology area (CPC A)Human Necessities
CPC primaryA61K2800/52
WIPO fieldPharmaceuticals
WIPO sectorChemistry

Abstract

Use of benzotriazole derivatives of formula (1), wherein R1 is C1-C30alkyl; C1C5alkoxy; C1-C5alkoxycarbonyl; C5-C7cycloalkyl; C6-C10aryl; aralkyl; —SO3M; a radical of formula (1a) R3 is hydrogen; C1C5alkyl; C1C5alkoxy; halogen, preferably Cl; or hydroxy; R4 and R5 are each independently of the other hydrogen; or d-C5alkyl; m is 1 or 2; n is O or 1; if m=1, R2 is hydrogen; unsubstituted or phenyl-substituted d-C1-C12alkyl; or C6-C10aryl; if m=2, R2 is the direct bond; or —(CH2)p—; and p is 1 to 3; for enhancing the photostability of cosmetic or dermatologic compositions comprising at least one further organic UV absorber.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.