Particles With Improved Colour Shielding
AssigneeIvoclar Vivadent AG
InventorsKai Rist, Annette Schmidt, Ahmed Shaaban
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Abstract
The present invention relates to particles comprising a core, in particular a magnetic core, and a first coating of a first shell material, wherein a second coating of a second shell material is applied to the surface of the first coating facing away from the core, the second shell material is different from the first shell material and has a higher refractive index than the first shell material.
Claims20
Particle comprising a core and a first coating of a first shell material,
- characterized in that a second coating of a second shell material is applied to the surface of the first coating facing away from the core,
- wherein the second shell material is different from the first shell material and has a higher refractive index than the first shell material.
Process of using a first coating of a first shell material and a second coating of a second shell material for the colour masking of magnetic particles, wherein the first coating is applied to the particles to be masked and the second coating is applied to the surface of the first coating facing away from the particle, and the second shell material is different from the first shell material and has a higher refractive index than the first shell material.
Dependencies are inferred from the claim text.