Patent ID: 9144541
Filing Date: 2015-09-29
Classification: A61K,A61Q,B82Y,C01P,C09C

Abstract:
1. An external preparation for skin, comprising a titania fine-particle composite, wherein the titania fine-particle composite comprises titania fine particles combined with one or more selected from polymers containing, as constituent monomers, a carboxylic acid and/or a carboxylic acid derivative represented by the following general formula (1): and wherein, in X-ray powder diffraction analysis of the titania fine-particle composite, a half-value width of a peak of maximum diffraction intensity attributed to titania crystals is 2.0° or less; wherein a concentration of the titania fine particles in the titania fine-particle composite is in a range of 85 to 99 wt %; and wherein a maximum diameter of the titania fine particles is 0.001 to 0.1 μm.