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US 6,187,298 B1Granted
Sunscreens having ultraspectral protection
AssigneeMerck Patent GmbH
InventorsThekla Kurz, Sabine Hitzel, Dorothee Wille
Life of this patent
Estimating the term…
Abstract
The invention relates to novel light protection filters for the VIS and IR region for the preparation of sunscreens and also to the use thereof in cosmetics. The invention further relates to sunscreens which have broad-band or ultraspectral protection.
Claims22
An interference pigment material, comprising at least one of
- (a) a copper and/or skin-colored interference pigment which is platelet-shaped or ground mica having a diameter of up to 15 μm, which is coated with SnO2 and/or TiO2, said coating being optionally doped with iron or cerium;
- or
- (b) an interference pigment having a white body color and a copper or skin-colored interference color and is platelet-shaped or ground mica, which is coated with TiO2 and optionally doped with iron or cerium and has a particle size of less than 15 μm.
An interference pigment material comprising at least one of
- (a) a copper and/or skin-colored interference pigment comprising particles, wherein the particles comprise a carrier material coated with SnO2 and/or TiO2, said coating being optionally doped with iron or cerium, wherein the particles have a size of less than 15 μm;
- or
- (b) an interference pigment having a white body color and a copper or skin-colored interference color, wherein the interference pigment comprises particles, wherein the particles comprise a carrier material coated with TiO2 and optionally doped with iron or cerium, wherein the particles have a size of less than 15 μm.
An interference pigment material, comprising at least one of
- (a) a copper and/or skin-colored interference pigment which is mica having a diameter of up to 15 μm, which is coated with SnO2 and/or TiO2, said coating being optionally doped with iron or cerium;
- or
- (b) an interference pigment having a white body color and a copper or skin-colored interference color and is mica, which is coated with TiO2 and optionally doped with iron or cerium and has a particle size of less than 15 μm.
Dependencies are inferred from the claim text.