The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 15, 2013
Filed:
Apr. 28, 2008
Martin Vogt, Grenzach-Wyhlen, DE;
Stefan Müller, Weil am Rhein, DE;
Julie Grumelard, Huningue, FR;
Cyrille Deshayes, Rosenau, FR;
Holger Paul, Lörrach, DE;
Jürg Haase, Bettingen, CH;
Thomas Ehlis, Freiburg, DE;
Martin Vogt, Grenzach-Wyhlen, DE;
Stefan Müller, Weil am Rhein, DE;
Julie Grumelard, Huningue, FR;
Cyrille Deshayes, Rosenau, FR;
Holger Paul, Lörrach, DE;
Jürg Haase, Bettingen, CH;
Thomas Ehlis, Freiburg, DE;
BASF SE, Ludwigshafen, DE;
Abstract
Disclosed is the use of an aqueous dispersion comprising (a) a micronized sparingly soluble organic benzophenone derivative of formula (1), selected from the crystal modifications (B) and (C), wherein the crystal modification (B) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.70; and wherein the crystal modification (C) is characterized by a peak in the X-ray diffraction pattern at a d-spacing of about 7.06; and (b) a dispersing agent selected from anionic, non-ionic and amphoteric surfactants; for protecting the human skin from browning and skin aging. The new crystal modification (C) represents a thermodynamically stable compound of formula (1) at 25° C. This modification is therefore suitable in dispersions comprising micro-fine particles.