Abstract: Disclosed are shaped articles excellent in dyeability, antistatic properties, antifogging properties and other properties which include a polymer derived from at least a multifunctional monomer having two or more (meth)acryloyloxy groups per molecule, a surface of the polymer having 0.02 to 0.20 .mu.mol/cm.sup.2 of acidic groups, a method of making such shaped articles, an antistatic material utilizing such a shaped article, and an antireflection material utilizing such a shaped article.

Abstract: Disclosed are shaped articles having a coating layer formed on surface region, wherein the surface region is formed of a polymer derived from a multifunctional acrylic monomer and having 0.02 to 0.2 .mu.mol/cm.sup.2 of acidic groups therein, by curing a coating composition consisting essentially of a specific silica polycondensate. The silica polycondensate is obtained by mixing (I) colloidal silica and (II) a specific silicon compound in such a molar ratio that the average number of hydrolyzable groups is within the range of 2.30 to 3.85, and then subjecting them to cohydrolysis and polycondensation. In these shaped articles, the coating layer have excellent properties such as hardness and abrasion resistance, as well as good adhesion.

Abstract: A lens sheet comprising a transparent substrate and a lens portion composed of a cured product of an ultraviolet-curable resin composition, which is formed on at least one surface of the transparent substrate. The resin composition exhibits a polymerization shrinkage at curing of not larger than 20% as calculated based on the difference of the specific gravity at 25.degree. C., and a modulus of elasticity at 25.degree. C. after curing of 10 to 1,000 kg/cm.sup.2. The ultraviolet-curable resin composition is preferably comprised of a polyvalent (meth)acrylate, a mono(meth)acrylate and a photopolymerization initiator.

Abstract: A method for giving high and durable electric conductivity to molded polymer articles, which comprises heat-treatment of the articles in an aqueous solution containing a copper salt, a reducing sulfur compound, and a water-soluble basic salt of nitrogen-containing organic compound having at least 12 carbon atoms.

Abstract: A process for producing steam-cured lightweight calcium silicate articles superior in productivity, homogeneity, and mechanical strength by using a powdery siliceous material, powdery calcareous material, and cellulose pulp as main raw materials, which process comprises mixing short acrylic fibers of 1 to 10 mm in filament length to which an organic silicon compound has adhered, into a slurried mixture of said raw materials.

Abstract: A method of forming a corrosion resistant film for a specified image on the surface of a substrate by adding an aliphatic amine such as ethylenediamine, monoethanolamine, diethanolamine triethanolamine to a sensitizing solution composed of water-soluble high molecular compound and ammonium dichromate so as to adjust pH value of the sensitizing solution in the range of 6.1 to 7.8, applying the prepared sensitizing solution to the surface of a substrate of copper or copper alloy, and undergoing each process of drying, exposure and development. After an etching process being applied to the substrate on the surface of which the corrosion resistant film has been formed, the corrosion resistant film is removed to be a finished goods.