Abstract: A polishing tool uses a fixed abrasive polisher which can perform polishing of an object with good surface accuracy for a long period of time. A mixture of abrasive grains, having an average particle diameter of 0.01 to 2.0 &mgr;m, and comprising at least one of cerium oxide, manganese oxide, titanium oxide, zirconia, silica, and iron oxide, and polyimide resin particles or phenolic resin particles having an average particle diameter of 0.1 to 20 &mgr;m is heated at a temperature of 120 to 250° C. under a pressure of 9,800 to 49,000 kPa (100 to 500 kg/cm2) to mold the mixture into a desired shape. This can provide a polisher 4 having abrasive grains dispersed in a thermosetting resin, and having abrasive grains of 20 to 60% by volume, a binder of 30 to 50% by volume, pores of not more than 40% by volume, and a Rockwell hardness of not less than 30 in terms of the H scale. This polisher is attached to a surface plate by an epoxy adhesive to produce a polishing tool.

Abstract: A process for generating an excited molecular oxygen by a procedure which comprises causing a mixture of an alkaline aqueous solution with hydrogen peroxide to wet the surface portion of a layer of a hydrophilic and gas-pervious material, causing a molecular chlorine-containing gas to penetrate said layer from the side opposite said surface thereof, enabling said gas during the penetration thereof through said material to react with said mixed aqueous solution which has wetted said surface portion of said material, and thereby inducing generation of said excited molecular oxygen, O.sub.2 (.sup.1 .DELTA.), through said surface portion of said layer wetted by said mixed aqueous solution.