Abstract: Ungelled amidation reaction products of a polycarboxyl-containing material and a polyamine having at least one ether group are produced. The ungelled products can be mixed with a crosslinking resin to provide a coating composition having good durability and stain-resistance.

Abstract: Disclosed is a heat-sensitive recording paper comprising a colorless or pale-colored chromogenic substance and a phenolic substance for coloring the chromogenic substance by heating, in which amorphous synthetic aluminum silicate and/or amorphous synthetic magnesium silicate is incorporated in a recording layer.

Abstract: Accuracy of producing stained glass photomasks is improved by means of a preliminary heat treatment to adjust the fictive temperature of the glass, thereby improving dimensional stability during subsequent production of a stained pattern in the glass.

Abstract: A process for the preparation of non-conductors prior to electroless metal plating with a catalyst composition. The catalyst formulation comprises the product resulting from the admixture of an acid, a nucleophillic reactant, stannous ions, a hydrolyzable stannic compound, and precious metal ions. The stannous ions are in a molar excess relative to either the stannic compound or the precious metal ions.

Abstract: There is disclosed a method of fabricating an optical waveguiding surface layer in an optically transparent crystalline substrate, such as lithium niobate, by selectively indiffusing metal ions, such as titanium, into the crystal to effect an increase in the index of refraction of a surface portion thereof. The indiffused metal ions serve to raise both the ordinary and extraordinary refractive indices of the substrate by amounts which are of the order of one percent at the diffusion surface and which gradually decrease by one-half at depths of the order of one micrometer below the surface. By properly adjusting the relevant diffusion parameters in the method, the important surface waveguide characteristics can be independently controlled.

Abstract: In a method of manufacturing a color picture tube of the type comprising the steps of coating phosphors of three primary colors on the inner surface of the face plate of the color picture tube to form dots or stripes of the phosphors, applying an acrylic resin emulsion on the dots or stripes of the phosphors to form an acrylic resin film, vapor depositing metal onto the film to form a metallic reflecting film, subjecting the acrylic resin film to a pyrolysis for decomposing it into gases, and removing the gases, the acrylic resin emulsion comprises a plurality of emulsions respectively containing conventional acrylic resin and normal butyl methacrylate resin. The normal butyl methacrylate resin is mixed with the conventional acrylic resin at a ratio of 5 to 40% by weight.

Abstract: Blocked polyisocyanates with improved water-dispersible or water-soluble properties are prepared by reacting polyisocyanates, in which 50 to 99.8% of the isocyanate groups are blocked, optionally in a solvent-free environment with an organic polyaminosulphonate or an organic polyaminosulphonic acid in sufficient quantities to provide an end product containing from 0.1 to 10%, by weight, of sulphonate groups (SO.sub.3.sup.-). The blocked polyisocyanates have particular utility when used in combination with hydrophobic polyhydroxyl compounds as binders in aqueous coating compounds.

Abstract: A heat-sensitive recording sheet comprising a support and a recording layer containing an electron donating colorless dye and a compound represented by the following formula: ##STR1## wherein R represents an alkyl group containing 2 to 12 carbon atoms.

Abstract: Lead-coated alumina fibers which are obtained by reduction of lead oxide in a glass coating on alumina fibers are particularly useful for making strong lead matrix composites.

Abstract: An improved, water based, undercoating composition, primarily designed for undercoating of vehicles to prevent corrosion. It is a butadiene-styrene based polymer latex composition which contains from about 5% to about 20% by weight of mica as a filler and flattener which provides an effective moisture barrier and also functions to prevent premature gelling of the composition in combination with a sufficient amount of ammonium hydroxide to provide a composition pH within the range of 7.5 to 10.0 and, in addition, to provide enhancement of anti-foaming properties of the composition. The balance comprises small but effective amounts of minors such as a wetting agent, a defoaming agent, a dispersing agent, pigment, viscosity modifiers, and water. Also, disclosed is a solvent based, stryene butadiene coating.

Abstract: Disclosed is a release sheet having on at least one of its outer surfaces a dried and cured coating composition comprising a release agent, a cross-linkable thermoplastic resin, and a water dispersible organic compound containing polyoxyethylene, polyoxypropylene, or a block copolymer of polyoxyethylene and polyoxypropylene.

Abstract: An amorphous electrochromic film prepared by vacuum evaporation under relatively high pressure of 2.times.10.sup.-4 -2.times.10.sup.-3 torr.The evaporated film is porous with packing density less than 0.65 and exhibits excellent reversibility after heat treatment at 250.degree. C.-350.degree. C. whereby it is optimum for an electrochromic device sealed with a sealant of tetrafluoroethylene-ethylene copolymer having no reactivity with electrolyte, low moisture permeability, excellent chemical properties and good adhesiveness.

Abstract: A wire being galvanized leaves a zinc bath with the adhering liquid zinc forming after solidification of the zinc layer and with the surface of the wire being rapidly cooled by a cooling agent such as liquid nitrogen immediately after leaving the zinc bath to increase the thickness of the adhering zinc.

Abstract: A multiple-layer process for applying, in alternate, successive layers, the protein, avidin, and a biotin-containing extender material to a solid surface to modify the properties of the surface and to the multiple-layer product so prepared.

Abstract: Air drying compositions comprising an unsaturated oil modified resin and an unsaturated condensate of an alkoxy-methylmelamine, an allylic alcohol and an acrylamide. The unsaturated melamine condensate contains allylic and acrylamide moieties in the ratio of about 3:1 to about 1:3, at least about 0.75 allylic moieties and no more than about 3 acrylamide moieties per melamine ring and a total of allylic and acrylamide moieties in the range of about 2 to about 4 per melamine ring.

Abstract: A heat fuser roll and the method of manufacture thereof. The roll comprises a deformable layer on a base member and the deformable layer is produced by coating the base member with a silicone rubber material, curing the silicone rubber material and treating the roll by irradiating its surface with a predetermined level of ultra violet radiation for a predetermined time to produce an improved silicone rubber deformable layer.

Abstract: In order to produce hard solderable metal coatings on a ceramic there is applied to the ceramic base a thin layer of a palladium alloy containing 20-70% of cobalt and/or iron. The coating is preferably applied by vapor deposition or sputtering. The adhesiveness of the coatings is still further improved if there is added to the alloy 3-20% of chromium, manganese and/or titanium.

Abstract: The outer surface layers of a flexible polyetherurethane foam are impregnated and dried with a latex of a flexible carboxylated styrene-butadiene type copolymer to provide a polyurethane foam having a surface which resists degradation in contact with a hot metal, e.g., steel, surface.

Abstract: Silicon nitride is pyrolytically deposited by the reaction of a halosilane with ammonia in an evacuated system. The process is particularly useful in providing uniform layers of silicon nitride on silicon wafers to be used in the fabrication of semiconductor devices.

Abstract: Flammable foundry coatings are disclosed in which the carrier liquid is safer to handle than previously used types e.g. isopropanol, and which also burns off more satisfactorily. The carrier liquid is a mixture of an essentially aliphatic hydrocarbon liquid of flash point greater than 32.degree. C., e.g. an aliphatic petroleum distillate, and a mono alkyl ether of a polyhydric alcohol, e.g. ethylene glycol monoethyl ether (oxitol).