1. A catalyst for the production of ethylene oxide, comprising: a carrier containing \u03b1-alumina as the main component which has at least two log differential pore volume distribution peaks in a pore diameter range of 0.01-100 \u03bcm and at least one peak of the above peaks is present in a pore diameter range of 0.01-1.0 \u03bcm in the pore distribution measured by mercury porosimetry, wherein each peak is a maximum value of the log differential pore volume distribution of 0.2 cm3g or larger, and a catalyst component comprising silver is supported on the carrier.
2. The catalyst for the production of ethylene oxide according to claim 1, wherein the specific surface area of said carrier is 0.03-10 m2g.
3. The catalyst for the production of ethylene oxide according to claim 1, wherein the pore volume of said carrier is 0.2-0.6 cm3g.
4. The catalyst for the production of ethylene oxide according to claim 1, wherein the ratio of the pore volume of the pore having a pore diameter of 0.1-0.5 \u03bcm relative to the total pore volume of said carrier is 5-50 vol %.
5. The catalyst for the production of ethylene oxide according to claim 1, wherein the median pore diameter of said carrier is 0.1-10 \u03bcm.
6. The catalyst for the production of ethylene oxide according to claim 1, wherein the water absorption of said carrier is 10-70%.
7. The catalyst for the production of ethylene oxide according to claim 1, wherein the primary particle diameter of the \u03b1-alumina, the raw material of said carrier is 0.01-100 \u03bcm, and the secondary particle diameter is 0.1-1,000 \u03bcm.
8. The catalyst for the production of ethylene oxide according to claim 1, wherein the mean diameter of said carrier is 3-20 mm.
9. The catalyst for the production of ethylene oxide according to claim 1, wherein the content of the \u03b1-alumina in said carrier is 90 mass % or more relative to the total mass of the carrier.
10. The catalyst for the production of ethylene oxide according to claim 1, wherein the content of an oxide of an alkali metal or an alkaline-earth metal in said carrier is 0-5 mass % in terms of the oxide relative to the total mass of the carrier.
11. The catalyst for the production of ethylene oxide according to claim 1, wherein the content of an oxide of a transition metal in said carrier is 0-5 mass % in terms of the oxide relative to the total mass of the carrier.
12. The catalyst for the production of ethylene oxide according to claim 1, wherein the content of silica in said carrier is 0.01-10.0 mass % relative to the total mass of the carrier.
13. The catalyst for the production of ethylene oxide according to claim 1, wherein said catalyst component includes cesium as a reaction promoter.
14. The catalyst for the production of ethylene oxide according to claim 1, wherein an amount of silver to be supported as said catalyst component is 1-30 mass % relative to the mass of the catalyst for the production of ethylene oxide.
15. The catalyst for the production of ethylene oxide according to claim 1, wherein an amount of said reaction promoter to be supported is 0.001-2 mass % relative to the mass of the catalyst for the production of ethylene oxide.
16. A method for the production of ethylene oxide comprising conducting catalytic vapor phase oxidation of ethylene with a molecular oxygen-containing gas in a gas phase with a gas containing molecular oxygen in the presence of the catalyst according to claim 1.
The claims below are in addition to those above.
All refrences to claim(s) which appear below refer to the numbering after this setence.
1-4. (canceled)
5. An anti-copy film comprising:
a light transmissive imageable substrate having an image receptive coating disposed on opposing first and second surfaces, wherein the image receptive coating is an inkjet receptive coating selected from the group consisting of (i) porous coating comprising oxides or silicates and (ii) swellable hydrophilic polymer coating;
complementary positive and negative images disposed on the first and second surfaces, such that an imaged area on the first surface is in registration with a non-imaged area on the second surface,
wherein the anti-copy film appears substantially opaque when viewed orthogonally to and appears partially transparent when viewed obliquely to either the first or second surfaces.
6. An anti-copy film comprising:
a light transmissive imageable substrate having an image receptive coating disposed on opposing first and second surfaces, wherein the image receptive coating is receptive to electrophotographic toner;
complementary positive and negative images disposed on the first and second surfaces, such that an imaged area on the first surface is in registration with a non-imaged area on the second surface,
wherein the anti-copy film appears substantially opaque when viewed orthogonally to and appears partially transparent when viewed obliquely to either the first or second surfaces.
7. (canceled)
8. The anti-copy film of claims 5 or 6, wherein the complementary positive and negative images include a plurality of imaged striations disposed between a plurality of non-imaged stripes.
9. The anti-copy film of claim 8, wherein the width of the imaged striation is less than about 375 micrometers and the width of the non-printed stripe is less than about 375 micrometers.
10. The anti-copy film of claim 8, wherein the imaged striations and the non-imaged stripes of the first surface are in registration with the non-imaged stripes and imaged striations, respectively, of the second surface.
11. The anti-copy film of claim 8, wherein the imaged striations and the non-images stripes are substantially the same width of about 250 micrometers.
12-13. (canceled)
14. The anti-copy film of claim 8, wherein the width of the imaged striation is substantially the same as the thickness of the imageable substrate.
15. The anti-copy film of claims 5 or 6, wherein the film appears substantially opaque when viewed orthogonal to the first or second surface and appears transparent when viewed at a 45\xb0 angle to the first or second surface.
16. The anti-copy film of claims 5 or 6 further comprising a light transmissive adhesive layer disposed on the second surface of the imageable substrate.
17. The anti-copy film of claim 16, wherein the adhesive layer has a refractive index that is substantially the same as the refractive index of the imageable substrate.
18. The anti-copy film of claim 16, wherein the adhesive is selected from the group consisting of permanent pressure sensitive adhesive, repositionable pressure sensitive adhesive, permanent hot melt adhesive, and repositionable hot melt adhesive.
19. The anti-copy film of claim 16 in the form of a tape, a label, or a document laminate, or a pocket.