Highly refractive, scratchproof tio2 coatings in mono- and multilayers
AssigneeBayer MaterialScience AG
InventorsKarlheinz Hildenbrand, Friedrich-Karl Bruder
Life of this patent
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Abstract
The invention relates to coated products containing a substrate (S) provided with a coating consisting of a single high refractive index and scratch-resistant layer (A) or provided with a multilayer structure in which layers (A) alternate with lower refractive index layers (B), wherein the layers (A) are characterised in that they contain particularly finely divided TiO2 nanoparticles.
Claims15
-14. (canceled)
A coated product comprising a substrate (S), of an organic polymer, and at least one coating comprising at least one layer (A), which comprises finely divided TiO2 nanoparticles in an amount of from 58 to 95 wt.%, based on the coating (A).
A coating composition for the coating of a substrate (S), of organic polymers comprising
- i. an anhydrous suspension of TiO2 nanoparticles having a d100 value of less than or equal to about 100 nm in an organic solvent having a boiling point greater than or equal to 100° C.,
- ii. a binder,
- iii. a photo- or thermo-initiator,
- iv. optionally additives, and
- v. an organic solvent.
Dependencies are inferred from the claim text.