Abstract: Plastic substrates of optical elements having surfaces coated with the abrasion-resistant coating compositions described in U.S. Pat. No. 3,986,997 are improved by utilizing a tie-coat comprising an A-alkylenealkoxysilane where A contains a group reactive with the substrate. For some substrates, particularly polycarbonate lenses, the coating process is substantially simplified by reducing criticality of conditions when the tie-coat of the present invention is used than when the process of the aforementioned patent is followed with the tie-coats conventionally used and disclosed therein.

Abstract: The process of coating epitaxial films of lead chalcogenide materials with s.sub.2 S.sub.3 to insulate the films from the effects of oxygen upon exposure to air.

Abstract: A disc-shaped information carrier for high-density storage, in particular for video signals, has the information provided on both sides of the carrier and stored in the form of a beam-reflecting surface structure which is covered by a layer of translucent material. A disc-shaped base element is formed by injection molding, pressing, stamping or the like to exhibit a surface structure corresponding to the information to be stored on both sides thereof. Each side has a thin metallic coating applied thereto which maintains the same surface profile and the information structure is protected on each side with a layer of transparent material.

Abstract: An article of manufacture and a method are disclosed herein for improving lubricity and wear resistance of a given substrate by applying thereto a solution consisting essentially of a dialkanolamine and a halogenated hydrocarbon carrier. The composition herein disclosed has been found to be most effective as preservatives for coating sundry substrates, especially gramophone or phonograph record surfaces whereby there is effected a marked reduction of record groove wear while substantially minimizing noise and harmonic distortion. The preferred composition herein contemplated and disclosed is one consisting essentially of a N-alkyl-substituted N,N-dialkanolamine and a halogenated hydrocarbon carrier, said dialkanolamine having the formula:(HOR.sub.1).sub.2 N--R.sub.2wherein R.sub.1 is alkylene selected from the group consisting of ethylene, isopropylene and propylene and R.sub.2 is alkyl having four to twenty carbon atoms.

Abstract: A linerless pressure-sensitive adhesive container sealing tape which comprises a backing laminate, a unique pressure-sensitive adhesive layer on one of the major surfaces of the laminate and a release coating on the other major surface of the laminate. The tape is wound upon itself to form a roll with the pressure-sensitive adhesive layer facing inwardly toward the axis of the roll. The backing preferably comprises a first polyester film, a thin layer of metal coated onto one major surface of said first film to metallize this surface, a second polyester film, and a laminating adhesive layer adhering the second film to the metallized surface of the first film.

Abstract: A phonograph or video disc comprises at least one unsaturated nitrile copolymer and has therein an unsaturated nitrile content of from 40 to 90 percent by weight, and the disc exhibits a Clash-Berg flex temperature of from 50.degree. to 120.degree. C, an absorbed impact energy of at least 0.5kg.cm. when tested with a test specimen thereof of a 2-mm. thickness by a Dynstat impact test according to BS-1330-1946, and a Shore D hardness of from 75 to 95.

Abstract: A packaging film composition having an improved heat seal range. The film comprises a core, which is preferably propylene homopolymer or copolymer but which may be a blend of polypropylene with any other compatible polymer, such core being coated on one or both sides with butene-1 homopolymer or with a copolymer of butene-1 with ethylene.

Abstract: A casting powder for steel having, for example, ground blast furnace slag, and/or sand and caustic lime CaF.sub.2 as basic substances with further additives which include up to 10% of additives decomposing completely at temperatures below 600.degree. C under development of gas whereby the mole-volume of developed gas per mole-weight gas-generating additive (m.sup.3 /Kg) is not smaller than 0.5. Ammonium nitrite or ammonium carbonate is preferred whereby the gaseous decomposition products will be nitrogen, water vapor and/or carbon dioxide.

Abstract: Poly-p-xylylene is chemically bonded to a thermoset resin via a reaction between oxygen-containing groups at the surface of the poly-p-xylylene and a reactant component of the thermosetting resin. A low temperature plasma is employed to chemically modify the surface of the poly-p-xylylene to incorporate the oxygen atoms into the backbone of the polymer at its surface.

Abstract: A magnetic coating composition in which magnetic iron oxide particles are dispersed into a solution of three components, which upon evaporation of the solvent and curing with elevated temperatures, results in a very smooth durable polymer coating having the magnetic particles dispersed uniformly therein. The three components in solution are an epoxy resin having an epoxide equivalent weight of approximately 400 or above, a polyamine whch has a minimum of one primary amine group and a cellulose acetate butyrate resin which has approximately 17 weight % butyral content or above. The polyamine, which acts as a catalyst to crosslink the composition, can be substituted for by hydroxyl compounds, a preferred one being formic acid (HCOOH) - an organic acid.

Abstract: A coating composition consisting essentially of certain heat-stable polymers, colorants, oxidation catalysts, and liquid carrier useful for coating an article to produce a finish which is capable of having a decorative pattern produced within it is provided.

Abstract: A coating composition consisting essentially of certain heat-stable polymers, colorants, antioxidants, and liquid carrier useful for coating an article to produce a finish which is capable of maintaining its hue and having a decorative pattern produced within it is provided.

Abstract: A composition contains (A) 60 to 80 parts by weight of vinyl chloride polymer (B) 11 to 23 parts by weight of an acrylic elastomeric polymer formed from butyl acrylate and methyl methacrylate and (C) 15 to 30 parts by weight of a second acrylic polymer formed from methyl methacrylate.The composition is useful for moldings and extrusions particularly where good weatherability and/or reduced smoke generation are required and can be directly bonded to and reinforced with polyester.

Abstract: A lapped seam can having a high safety characteristic used as containers of soft drinks or beer wherein the cut-burrs at the end of the inner end portion of the can blank are completely removed so that micro-leak passages apt to occur in the lapped seam can are shut off, thereby permitting a long term storage of the can content without deterioration by preventing metal from being dissolved out from said inner end portion.

Abstract: An uncured elastomeric sealing strip suitable for use in highway seals and comprising reinforcing carbon-black filled chlorosulfonated polyethylene in direct contact with two metal electricity conductors parallel to each other and running substantially the whole length of the strip. The elastomer is cured in place by heat generated within the composition when sufficient electric voltage is applied to the metal conductors.

Abstract: There is disclosed a novel composite film prepared by melt extrusion laminating a polymer blend composition comprising a low-crystalline resin of an ethylene-butene copolymer and a polyolefin resin having incorporated therein a lubricant and an anti-blocking agent onto a surface or surfaces of a uniaxially stretched polypropylene film followed by stretching the laminate film in the direction perpendicular to the direction in which said polypropylene has been stretched and optionally subjecting the resulting film to corona discharge treatment. The composite film thus made provides an excellent packaging material because of its improved antistatic, lubricating and anti-blocking properties in addition to its heat sealability feasible at lower temperatures than prior art materials.

Abstract: An abrasion resistant coating composition suitable for application to a substrate comprises a polyvinyl acetal resin, a fluorinated alcohol and polysilicic acid.

Abstract: A composite reinforcement member is provided for reinforcing composite structural joints. The reinforcement member is optimally a laminate of fiber composite sheets of uniform size and shape which are adhesively bonded together. By virtue of the shape of the laminate and arrangement of the sheets, the fibers substantially distribute a tension load to minimize peel forces on the structural joint.

Abstract: Plastic sheeting and other formed plastic articles, particularly of cellulose ester, having an improved overall balance of physical properties such as impact strength, solvent resistance, surface hardness and surface appearance are obtained by applying radiation curable compositions containing certain unsaturated cellulose ester materials to one or more surfaces of the articles and radiation curing the same.

Abstract: The invention relates to a method for preparing aluminum and aluminum alloy objects for plating which results in an article which exhibits improved corrosion resistant characteristics. The process includes anodizing the aluminum object in an acid bath, placing the anodized object in contact with a chemical which impregnates and is absorbed by the oxidized crystalline surface and finally exposing the treated aluminum object to heat so that the impregnating chemical is pyrolyzed to form an electronically conductive oxide thereby permitting the plating process while preserving an anodic coating of high ionic resistance.