composite material, oral care composition, use of a composite material, teeth whitening method and process for preparing a composite material

摘要

a composite material is disclosed which comprises: (i) a pigment having a 220 to 320 degree cielab h tint angle; and (ii) a 1: 1 or 2: 1: 1 non-expandable bipolar clay comprising alternating tetrahedral and octahedral sheets, ending with a tetrahedral sheet in one outer surface plane and an octahedral sheet in another outer surface plane.