Abstract: This invention relates to aqueous epoxy resin-containing compositions which are particularly useful for depositing coatings on freshly galvanized metals in order to protect the metal against white rust and provide a surface which is universally paintable. The aqueous compositions generally comprise (A) an oxidized alkyl ester of a dibasic carboxylic acid, (B) trivalent chromium, (C) hexavalent chromium, (D) an organic resin component consisting essentially of at least one water-dispersible or emulsifiable epoxy resin or a mixture of resins containing more than 50% by weight of at least one water-dispersible or emulsifiable epoxy resin, and (E) water, said composition being further characterized as being substantially free of strontium chromate.

Abstract: The present invention relates to compositions for protecting metals which contain a mixture constituted by stearic acid, dicyclohexylamine, and an azole derivative, and more particularly to a composition containing from 0.8 to 1.4 g/l of 1-phenyl-5-mercaptotetrazole, and from 0.005 to 0.01 g/l of the mixture stearic acid:dicyclohexylamine in the molar ratio 1:1, in solution in water, as well as to the process for its preparation, and to methods for protecting metals using said compositions.

Abstract: An optical recording medium that contains a monomolecular film or a lamination of monomolecular films having polydiacetylenic bonds is provided. The monomolecular film is prepared by adsorbing a chemical adsorbent having a diacetylene group, and a --SiCl group at one molecular end on a base plate, and irradiating said monomolecular film with ultraviolet rays to polymerize the adsorbents at the diacetylene group, thereby forming polydiacetylenic bonds. The resulting blue monomolecular film or the lamination will turn red by the application of light or heat, reversibly or irreversibly.

Abstract: The method for depositing multilayers of PCD film onto the substrate comprises chemically depositing a polycrystalline diamond layers onto the substrate at deposition temperatures in the range of 650.degree. to 825.degree. C., interrupting the deposition process with a cool-down step and then depositing at least one other layer under the same deposition conditions. The method enables one to deposit PCD films having a thickness of at least 12 microns for applications on flat as well as curved substrates having wide use in the electronics industry. Thick PCD films of this invention have been found to be ideal for dissipating heat from radio frequency (RF) and microwave (MW) devices.

Abstract: Laundry dryer sheets having a good loading of surfactant are prepared by (1) coating an absorbent flexible substrate with a molten tert-amine oxide wherein the molecules correspond to the formula RR'R"NO.nH.sub.2 O in which R is a primary alkyl group containing 9-24 carbons; R' is methyl, ethyl, or 2-hydroxyethyl; R" is independently selected from methyl, ethyl, 2-hydroxyethyl, and primary alkyl groups containing 8-24 carbons; and n is 0, 1, or 2, at least some of the molecules being dihydrate molecules, and (2) solidifying the amine oxide.

Abstract: This specification discloses a flame retardant vegetable fiber material and the process for the production of the same. The adopted means is to immerse the vegetable fiber into a firstly prepared inorganic solution and also into a secondary prepared inorganic solution in turn, while both solutions come into the inherent gaps of the said fiber and become an insoluable and incombustible inorganic compound therewith. The mutual contact and reaction caused by the first and second solutions generate a setting dip and fixation thereupon.

Abstract: A fibrous web having an enhanced capacity for water absorption is produced by impregnating an absorbent fabric with a polymer or copolymer capable of forming by cross-linking an absorbent polymer or copolymer and subsequently heating the treated fabric effecting cross-linking of the polymer to form an absorbent polymer. The product may comprise a non-woven fibrous web or mat having a water-insoluble binder on one surface and a cross-linked hydrophilic polymer or copolymer on its opposite surface.

Abstract: An effective autodeposition bath with low volatile organic compound emissions can be compounded with polymer solids made by polymerizing a mixture of monomers consisting of certain acrylates and other monomers. E.g., a suitable mixture is, in percents by weight, 44% butyl acrylate, 36% acrylonitrile, 10% styrene, 7% methacrylic acid, 2% of the methyl ether of methacrylamide, and 1.5% of hydroxyethyl acrylate.

Abstract: A hardened cement-based mass having a corrosive metallic material embedded therein, or containing an aggregate reactive with an alkaline substance, is impregnated with an aqueous solution containing 1 to 50% by weight of a dissolved nitrite of an alkali metal or alkaline earth metal and 0.01 to 20% by weight of a dissolved organic silicon compound such as sodium methylsiliconate or potassium methylsiconate, or a dissolved or emulsified polymer thereof, or with a solution prepared by using an aliphatic alcohol having 1 to 3 carbon atoms, and containing 1 to 50% by weight of a dissolved nitrite of an alkali metal or alkaline earth metal and 0.01 to 20% by weight of an dissolved organic silicon compound such as methyltrimethoxysilane or ethyltrimethoxysilane, or a dissolved polymer thereof, and is allowed to dry in the air. Alternatively, the mass is coated with an unsolidified cement paste, mortar or concrete containing 1 to 25% by weight of a nitrite of an alkali metal or alkaline earth metal and 0.

Abstract: Filled fluorosilicone and filled fluorophosphazene composite films and unfilled fluorosilicone, fluorophosphazene, or copolymers provide atomic oxygen resistance to protect surfaces on spacecraft in low earth orbit. The preferred composite films are generally made by polymerizing suitable precursors on the exposed surfaces, the filler being mixed with the polymer precursors prior to curing. Second surface mirrors can be protected with these films while the flexibility of the mirror is retained.

Abstract: Apparatus and method for transparentizing and glossing a resin-coated surface on sheet or web material which may comprise paper or transparency overhead projection stock, includes the delivery of such resin-coated material into intimate contact with non-wetting heated matter supplied in a pool or bath for a time sufficient to transfer heat by conduction from the non-wetting matter to the resin surface. The temperature of the bath is maintained above the glass transition temperature of the resin. The resin coated material may be applied by a roll partially immersed in the bath, or an offset or transfer roll may be positioned in the bath to deliver heated matter from the bath, in non-pressure relation, to the exposed resin surface.

Abstract: The leather is treated with a resin, quaternary ammonium compound, amine or polymer before the impregnation with the fluoro chemicals. With these auxiliaries, a uniform effectiveness of the fluoro chemicals which act on the surface is achieved, regardless of the procedure or the chemicals previously introduced into the leather. These auxiliaries can optionally also be applied to the leather together with the fluoro chemicals.

Abstract: Salts of sulfonic acids of the type formed in the sulfonation of alkenyl alkyl polyglycol ethers corresponding to the following formulaR--O(--C.sub.n H.sub.2n O).sub.x --R.sup.1with sulfur trioxide, followed by hydrolysis, are used as antistatic agents for plastics. R is a straight chain C.sub.10 -C.sub.22 alkenyl group, R.sup.1 is a C.sub.1 -C.sub.12 alkyl group, n is an integer of from 2 or 4, and x is an integer of from 0 to 35. The products show a particularly long-lasting effect as external antistatic agents on polyamide fibers.

Abstract: Mixed metal oxide films containing Group IIa metals and transition metals are deposited on a heated substrate by a chemical vapor deposition process using alkylcyclopentadienyl metal compound precursors and an oxidizing agent.

Abstract: Temperature adaptable textile fibers are provided in which phase-change or plastic crystalline materials are filled within hollow fibers or impregnated upon non-hollow fibers. The fibers are produced by applying solutions or melts of the phase-change or plastic crystalline materials to the fibers. Cross-linked polyethylene glycol is especially effective as the phase change material, and, in addition to providing temperature adaptability, it imparts improved properties as to soil release, durable press, resistance to static charge, abrasion resistance, pilling resistance and water absorbency.

Abstract: The present invention is directed to a process for coating substrates with polyurethane ureas which is characterized in that a substrate is coated with a product, which has been obtained by the reation of (A) a prepolymer based on an aromatic polyisocyanate containing on average two ketoxime-blocked NCO groups and having an average molecular weight of about 500 to 15,000 with (B) a chain-extending agent corresponding to the formulaH.sub.2 N--R'--NH.sub.2in which R' is an aliphatic or cycloaliphatic radical, in the presence of solvents at temperatures above 50.degree. C. and at an equivalent ratio of blocked NCO groups to NH.sub.2 groups of 1.43 to 1.02, wherein after about 40 to 90% of the available amino groups have reacted, the reaction is completed with crosslinking at temperatures above 120.degree. C.The present invention is also directed to the coated substrates produced by this process.

Abstract: A controlled absorption verapamil containing pellet formulation for oral adminstration comprises a core of a powder mixture containing verapamil or a pharmaceutically acceptable salt thereof and an organic acid and a polymeric material, said core comprising layers of said powder mixture and said polymeric material superimposed one upon the other and said polymeric material being present in an amount effective to ensure that all of said powder mixture is coated into said core and a multi-layer membrane surrounding said core, the number of layers in said membrane and the ratio of the various polymers comprising the membrane being effective to permit release of the verapamil from the pellet at a rate allowing controlled absorption thereof over a 24 hour period following oral administration, said rate being measured in vivo and having a Tmax between 6 and 16 hours.

Abstract: This invention consists of a method to produce a composite wet-press papermakers felt by which one side of a textile base fabric can be given a uniform, smooth coating of polymeric resin particles fused together to provide a porous, elastic surface. Its distinguishing feature is the application to the textile base fabric of a homogeneous foam, composed of resin particles, a binder material, and a solvent, in a uniformly thick coating. The textile base fabric is then subjected to heat, which evaporates the solvent and fuses the resin particles to each other and to the fabric base.