Abstract: A method for making a composite aluminum article comprises the steps of electrochemically or chemically adsorbing fine particles of a polytetrafluoroethylene to the surface of a hard anodic oxide film of an aluminum material or an aluminum alloy material, and drying the aluminum material or the aluminum alloy material. Thereafter, the aluminum material or the aluminum alloy material and an opposite member which slides along the aluminum material or the aluminum alloy material are rubbed together, and a lubricating film is thereby formed.

Abstract: A process for electroless gold plating using plating solution comprizing cyanoaurate, alkaline cyanide, reducing agent, alkaline hydroxide, crystal condition controlling agent and stabilizer characterized in that an aldehyde or a ketone compound is added together with replenished gold salt, and hydrogen peroxide is also added, if necessary.

Abstract: An electroless palladium plating composition which comprises (1) 0.001-0.1 mol/l of a palladium compound, (2) 0.01-1 mol/l of a hypophosphite compound, (3) 0.01-5 mol/l of at least one member selected from the group consisting of ammonia and alkylamine compounds, (4) 0.01-20 mg/l of high-molecular weight polyethyleneimine having molecular weight of 300 to 100000 and (5) 0.01-10 g/l of an aliphatic alkyenylamine, and which is used at a pH in the range of 5-10.

Abstract: The invention provides a material for overcoat on a color filter for liquid crystal display, characterized in that the material comprises a water-soluble photopolymerizable substance, a cationically polymerizable, water-insoluble photopolymerizable substance, a photopolymerization initiator and a precursor of photo-setting catalyst, and a material for a color filter which comprises a mixture of the material for overcoat and a coloring agent.The invention also provides a process for forming an overcoat on a color filter, or for forming a color filter characterized in that the process comprises the steps of applying the material for color filter overcoat or the material for a color filter, subjecting the coating to exposure to light and performing development using an aqueous solution of alkali.

Abstract: The invention provides a bath composition for electroless solder plating comprising:(A) about 5 to about 120 g/l of at least one compound selected from the group consisting of alkanesulfonic acids and alkanolsulfonic acids,(B) about 10 to about 100 g/l of at least one compound selected from the group consisting of tin salts of alkanesulfonic acids and tin salts of alkanolsulfonic acids,(C) about 10 to about 100 g/l of at least one compound selected from the group consisting of lead salts of alkanesulfonic acids and lead salts of alkanolsulfonic acids,(D) about 10 to about 200 g/l of at least one compound selected from the group consisting of thiourea and thiourea derivatives, and(E) about 1 to about 250 g/l of at least one compound selected from the group consisting of monocarboxylic acids, dicarboxylic acids, tricarboxylic acids and salts thereof.

Abstract: A local electroless plating process for plastics comprising the steps of: coating the nonplating surface portion of a shaped plastic product with a pasty masking composition comprising a polymer and at least one compound selected from the group consisting of a sulfur compound, nitrogen compound and silicon compound; roughening the surface portion of the plastics product to be plated and applying a catalyst to the rough-surfaced portion; electrolessly plating the plastics product; and removing the polymer coating from the nonplating surface portion of the plastics product.

Abstract: This invention provides a glass composition for joining ceramic articles to ceramic or metallic articles, the composition comprising:(i) about 100 parts by weight of at least one of TiN, TiB.sub.2, AlN, AlB.sub.2, BN, B.sub.4 C, SiC and Si.sub.3 N.sub.4 powders,(ii) about 20 to about 1600 parts by weight of SiO.sub.2 powder,(iii) about 1 to about 600 parts by weight of B.sub.2 O.sub.3 powder, and(iv) about 1 to about 1600 parts by weight of at least one of powders of (R.sup.1).sub.2 O wherein R.sup.1 is Na, K or Li, (R.sup.2)O wherein R.sup.2 is Mg, Ca, Ba, Zn, Pb or Cd, (R.sup.3)O.sub.2 wherein R.sup.3 is Ti, Zr or Mn, and (R.sup.4).sub.2 O.sub.3 wherein R.sup.4 is Al or Bi.

Abstract: The invention provides a zinc-nickel alloy plating bath comprising about 3 to about 30 g/l of Zn ion, about 0.2 to about 20 g/l of Ni ion, about 20 to about 300 g/l of alkali hydroxide, about 0.05 to about 10 g/l of amino-alcohol polymer, an Ni-complexing agent in an amount of about 1 to about 20 moles per mole of Ni ion, and about 0.01 to about 20 g/l of amino acid and/or a salt of amino acid, the bath having a pH of 11 or more.

Abstract: This invention provides an inorganic coating composition comprising (a) about 100 parts by weight (based on solids) of a binder component prepared by thermally dissolving about 10 to about 40 parts by weight of fine particles of silica in about 100 parts by weight (based on solids) of potassium silicate and (b) about 15 to about 100 parts by weight of pearl luster pigment.

Abstract: This invention provides a method for forming metallic deposits on a nonconductor to provide a shield against electromagnetic radiation, the method comprising the steps of:(i) subjecting the surface of a nonconductor to pretreatment prior to electroless copper plating,(ii) electrolessly plating the pretreated surface of nonconductor with copper to form a copper layer about 0.5 to about 20 .mu.m in thickness on the surface, and(iii) immersing the copper-coated nonconductor in an electroless Ni plating solution and passing an electric current through the solution with the copper layer serving as the cathode, followed by cutting of current, to deposit as Ni layer 1.0 to about 20 .mu.m on the copper layer.

Abstract: This invention relates to an optical filter made of inorganic material for blue light which transfers blue light and absorbs all of the other colored lights by sticking an inorganic mixture powder pasted by mixing with screen oil on a glass substrate and firing it. The mixture includes transparent glass material powder and a combination of oxides of cobalt and aluminum. The contrast of a picture displayed on a display device can be substantially increased by reducing the reflection of incident ambient light without the reduction of brightness on account of the application of the above optical filter onto the displaying screen.

Abstract: Light-emitting cells of a display device are individually provided with inner walls at least partially covered by white reflectors consisting of glass material containing transparent particles having different refractive index by 5 to 80% by weight, so that extremely high luminous efficiency similar as that of optical integrating sphere can be realized. Also, openings for emitting colored light can be applied with color filters while the front surface other than those openings of the display device is covered with light-absorbing black material, so that the reflectance for incident ambient light can be extremely reduced. According to the multiplexed effect of the above structure, remarkably high display contrast can be readily realized.

Abstract: An optical filter made of inorganic material for red light which transfers red light and absorbs all of the other colored lights can be realized by sticking an inorganic mixture powder pasted by mixing with screen oil on a glass substrate and firing it. The mixture includes sulfates of copper, alkali metal and alkali earth metal. The contrast of the picture displayed on a display device can be increased significantly by reducing the reflection of incident ambient light without the reduction of brightness on account of the application of the above optical filter onto the displaying screen thereof.

Abstract: A composition for forming electroless plating on ceramics which comprises (i) 1 weight part of at least one member selected from the group consisting of organic palladium compounds and organic silver compounds, (ii) 0.1 to 200 weight parts of at least one member selected from the group consisting of organic metal compounds, (iii) 10 to 1000 weight parts of an organic solvent and optionally (iv) 1 to 500 weight parts of at least one member selected from the group consisting of high molecular compounds and particulate inorganic substances.

Abstract: This invention provides a composition comprising about 15 to about 75% by weight of a thermosetting or ultraviolet-curable resin, about 24.5 to about 84.5% by weight of finely divided heat-resistant inorganic substance and about 0.5 to about 20% by weight of a finely divided palladium catalyst. This composition is the solvent-free type and useful for forming an electroconductive metal coating on an electrically nonconductive base material by chemical plating.

Abstract: Aluminum alloy castings and aluminum alloy die castings are treated in the process comprising the steps of chemically polishing the castings, processing the chemically polished castings by barreling and/or by blasting and subjecting successively the castings to degreasing, anodic oxidation, dyeing and sealing.

Abstract: A vitreous enamel composition comprising 1 part by weight of a vitreous enamel solid component composed of (1) 90-99.9 wt. % of glass powder consisting predominantly of 40 to 80 wt. % of SiO.sub.2, 1-25 wt. % of at least one of B.sub.2 O.sub.3 and CaO, and 1-20 wt. % of R.sub.2 O in which R is K, Na or Li, and (2) 0.1-10 wt. % of palladium powder, and 1-20 parts by weight of an organic vehicle.

Abstract: A vitreous enamel composition comprising 1 part by weight of a vitreous enamel solid component composed of (1) 90- 99.9 wt. % of glass powder consisting of 30 to 70 wt. % of SiO.sub.2, 1- 65 wt. % of PbO, and 1-- 15 wt. % of R.sub.2 O in which R is K, Na or Li, and (2) 0.1-- 10 wt. % of palladium powder, and 1- 20 parts by weight of an organic vehicle.

Abstract: Electrolytic stripping bath for removing metal coatings from stainless steel base material comprising at least one reducing compound selected from the group consisting of dimethylformamide, formaldehyde, thiosulfates, sulfites, hydrazine, hydroxylamine and dimethylaminoboron with the conventional compounds and having a pH of 6.0 to 9.5.