1. A coating composition comprising a transition metal oxide compound dispersed in a resin that is photochemically inert to UV radiation and resistant to oxidation by hydroxyl radicals:
2. The composition of claim 1 wherein the transition metal compound is selected from the group consisting of TiO2, W03, ZnO, SnO2, ZrO2, Cr02, Sb04 and mixtures thereof.
3. The composition of claim 1 wherein the transition metal compound is TiO2 predominantly in the anatase form.
4. The composition of claim 1 wherein the resin is selected from the group consisting of fluoropolymers and liquid crystal polymers.
5. The composition of claim 1 wherein the binder is a fluoropolymer type.
6. The composition of claim 1 wherein the binder is a liquid crystal polymer.
7. The composition of claim 1 wherein the transition metal compound is present in an amount of from about 1% to about 10% by weight of the coating composition.
8. The composition of claim 1 wherein the transition metal compound is present in an amount of from about 2% to about 5% by weight of the coating composition.
9. The composition of claim 1 which also includes poly(tetrafluoroethylene).
10. The composition of claim 1 wherein the transition metal compound particle size is in the range of from about 5 to about 80 nm.
11. The composition of claim 1 wherein the transition metal compound particle size is in the range of from about 10 to about 50 nm.
12. A method of preparing a self-decontaminating surface coating comprising providing a clean surface which it is desired to render self-decontaminating; spraying the composition of claim 1 on the surface; and allowing the surface to dry.
13. The coating of claim 1 wherein the coating is clear or translucent.
14. A self-cleaning self-decontaminating surface comprising a substrate coated with the composition of claim 1.
15. The coating of claim 1 wherein the coating is pigmented.
16. An organic coating formulation produced by the addition and dispersion of a colloidal suspension of anatase TiO2 nanoparticles in an organic resin system or solvent utilizing ultra centrifugation and a technique selected from ultra-sonic dispersion, ball milling, calendaring, high shear blade mixing and combinations thereof.
17. A coating that is sufficiently self-cleaning so as to keep the surface active in order to further or continue to expose the anatase to UV radiation.
18. A clear or translucent organic coating according to claim 1 containing an amount of anatase nanoparticles that is sufficient to allow the UV reaction to occur on the surface in the presence water or moisture.
19. The coating of claim 1 wherein the coating is gloss, semi-gloss or lusterless.
20. A clear coating according to claim 1 capable of protecting coatings underneath from the harmful effects of UV radiation while still maintaining the ability to destroy harmful and toxic substances.
21. The surface of claim 13, which is the exterior surface of a vehicle, aircraft, building, ship or construction equipment.
22. The surface of claim 14, which is the interior surface of a vehicle, aircraft, building, air duct, or tunnel that is exposed to UV radiation.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1. A magnetic recording medium being a plate-like body and comprising:
a substrate;
a recording layer formed in a predetermined concavo-convex pattern over the substrate, the recording layer including recording elements for recording information formed as convex portions of the concavo-convex pattern; and
a non-magnetic material filling concave portions between the recording elements, wherein
the recording elements are formed in a data region at a pitch of 200 nm or less,
side faces of the recording elements are inclined to face a surface of the plate-like body on a side toward which the recording elements project in the concavo-convex pattern, and
an inclination angle of the side faces of the recording elements with respect to a direction perpendicular to the surface is smaller than 90\xb0 and 5\xb0 or more.
2. The magnetic recording medium according to claim 1, wherein the inclination angle is 16\xb0 or more.
3. The magnetic recording medium according to claim 1, wherein the inclination angle is 45\xb0 or less.
4. The magnetic recording medium according to claim 2, wherein the inclination angle is 45\xb0 or less.
5. The magnetic recording medium according to claim 1, wherein a thickness of the recording layer is 25 nm or less.
6. The magnetic recording medium according to claim 2, wherein a thickness of the recording layer is 25 nm or less.
7. The magnetic recording medium according to claim 3, wherein a thickness of the recording layer is 25 nm or less.
8. The magnetic recording medium according to claim 4, wherein a thickness of the recording layer is 25 nm or less.