Patent ID: 8642019
Filing Date: 2014-02-04
Classification: A61K,A61Q,B82Y,C01G,C01P,C09C

Abstract:
1. A UV screening composition comprising particles which are capable of absorbing UV light so that electrons and positively charged holes are formed within the particles, characterised in that the particles are adapted to minimise migration to the surface of the particles of the electrons and/or the positively charged holes when said particles are exposed to UV light in an aqueous environment, wherein the particles comprise a host lattice comprising titanium dioxide in the rutile form, the host lattice incorporating manganese in the 3+ state to provide luminescence trap sites and/or killer sites, wherein said particles are obtained by heating titanium dioxide in the rutile form at from 600° C. to 1000° C. with a manganese component to incorporate manganese in the 3+ state in the host lattice.