Abstract: A magnetic recording medium comprising a nonmagnetic support having formed thereon a plurality of magnetic layers including a top magnetic layer and an intermediate magnetic layer adjacent to the top magnetic layer, wherein the intermediate magnetic layer contains soft magnetic powder, the soft magnetic powder having, in its projective image, an average longer diameter <L> and a standard deviation of the longer diameter .DELTA.L satisfying the relationship represented by formula (1), and an average shorter diameter <W> and a standard deviation of the shorter diameter .DELTA.W satisfying the relationship represented by formula (2):0.05.ltoreq..DELTA.L/<L>.ltoreq.0.8 (1)0.05.ltoreq..DELTA.W/<W>.ltoreq.0.

Abstract: A rocket engine component is formed as a tungsten-copper composite substrate, and a functionally-gradient material coating overlying and contacting the substrate. The functionally-gradient material coating has a composition that varies nonlinearly through a thickness of the coating so as to minimize thermal stresses through the coating, and such that the functionally-gradient material coating is tungsten adjacent to the substrate and is rhenium remote from the substrate. In a preferred form, the functionally-gradient material coating includes a tungsten sublayer overlying and contacting the substrate, a tungsten-rhenium sublayer overlying and contacting the tungsten sublayer; and a rhenium sublayer overlying and contacting the tungsten-rhenium sublayer. The functionally-gradient material coating is preferably applied by a low-temperature deposition technique such as plasma enhanced chemical vapor deposition.

Abstract: A magnetic recording tape or disk formed from a biaxially oriented laminated polyester base film which comprises a layer (A) of a polyester consisting essentially of 2,6-naphthalenedicarboxylic acid and ethylene glycol components and a layer (B) of a copolyester consisting essentially of 2,6-naphthalenedicarboxylic acid, ethylene glycol, and diethylene glycol components, wherein the copolyester contains 1-5% by weight of the diethylene glycol component, based on the weight of the layer (B) copolyester, layer (B) being present on one or both surfaces of layer (A).

Abstract: The heat shrinkable film includes at least one of an ethylene-propylene random copolymer and an ethylene-propylene-butene random copolymer and a propylene-butene copolymer of low crystallinity, which is biaxially stretched simultaneously by a ratio of 2.0-3.5 times for each of the machine direction and the transverse direction by a wet heating method. The film preferably has a tensile elongation at breaking of more than 200%, and a heat shrinking ratio of more than 8% for each of the machine direction and the transverse direction when it is immersed in glycerine at 80.degree. C. for 30 sec. Since the file is excellent in tensile elongation and has satisfactory heat shrinkability at low temperature, it is suitable as a film for use in an automatic L-bar sealer in which a tensile elongation at breaking is an important factor.

Abstract: A metal thin film magnetic recording medium comprising an underlying non-magnetic layer and a magnetic layer comprising a Co-alloy having a uni-axial magnetocrystalline anisotropy formed in this order by lamination on the surface of a non-magnetic substrate. On the substrate, are formed a seed layer comprising an oxygen-containing non-magnetic amorphous metal or a seed layer comprising a non-magnetic amorphous metal having an oxygen-containing layer (not illustrated) on the surface, and an underlying non-magnetic layer is laminated on the seed layer. Further, a seed layer comprising an amorphous Cr- or V-alloy is formed on the substrate, and an underlying non-magnetic layer is laminated on the seed layer.

Abstract: Disclosed is a magnetic recording medium comprising a nonmagnetic base support and a magnetic layer containing ferromagnetic metallic powder dispersed in a binder, wherein the strain dependability of said magnetic recording medium is characterized in that: a ratio G'.sub.2 /G'.sub.1 is not less than 0.01, wherein G'.sub.1 is a storage modulus provided that the strain is 10.sup.-4, and G'.sub.2 is a storage modulus provided that the strain is 10.sup.-2.

Abstract: A magnetic layer is provided on a nonmagnetic base with a non-ferromagnetic layer interposed between them. Non-ferromagnetic particulate iron oxide is incorporated in the non-ferromagnetic layer. In addition to, or in place of, this iron oxide, non-structural carbon having a mean particle diameter of 10 to 60 nm, a specific surface area of 150 m2/g as measured by the BET method and a DBP oil absorption of 100 ml/100 g or less may be used. This makes it possible to achieve a magnetic recording medium having excellent surface properties and good-enough electromagnetic transducing characteristics.

Abstract: A multilayered laminate which comprises (A) at least one thermoplastic resin layer of an ethylenic copolymer having ethylene and at least one of acrylamide derivatives, methacrylamide derivatives, ester monomers, ether compounds, acid compounds having an unsaturated bond between carbon atoms, and mixtures thereof; (B) other thermoplastic resin layers; and (C) a hydroscopic gas barrier intermediate layer and a method of improving the transparency of polypropylene.

Abstract: A golf ball having a covering or coating consisting in whole or in part of a sulfonated or carboxylated fluoropolymer wherein the fluoropolymer comprises 1-100% of the covering or coating. The fluoropolymer may be blended with conventional golf ball cover or coating materials. A method of enhancing the cut resistance, abrasion resistance, and durability of a golf ball comprises the steps of: a) forming a golf ball core; and b) forming a cover around said core by either compression molding preformed half-shells of cover stock material comprising of a sulfonated or carboxylated fluoropolymer about said core or by injection molding cover stock material comprising of a sulfonated or carboxylated fluoropolymer around said core. Another method of enhancing the cut resistance, abrasion resistance, and durability of a golf ball in accordance comprises coating the golf ball with a sulfonated or carboxylated fluoropolymer.

Abstract: A heat shrinkable polyolefin laminate film having surface layers made of a crystalline polypropylene resin, and an intermediate layer made of an ethylene resin composition consisting essentially of a linear low density polyethylene and a syndiotactic polypropylene, which is stretched at least two times in the machine and transverse directions, respectively, and which does not cause lowering of the transparency even if recovered films are incorporated into the intermediate layer, is excellent in low temperature shrinkability and packaging machine applicability, and is suitably used as a heat shrinkable packaging material.

Abstract: A thermoplastic polyurethane composition comprises a thermoplastic polyurethane and a tin compound. The tin compound is contained in an amount of 0.3 to 15 ppm as converted into tin atom based on the thermoplastic polyurethane. The thermoplastic polyurethane composition has a retention ratio of long-chain hard segments when melt treated at 220.degree. C. for 60 minutes of at least 85%. The thermoplastic polyurethane composition also has a retention ratio of inherent viscosity when melt treated at 220.degree. C. for 6 minutes and then melt extruded and, thereafter, allowed to stand at 20.degree. C., 60% RH (relative humidity) for 24 hours of at least 85%. The thermoplastic polyurethane composition has excellent mold-ability and gives molded products being excellent in tensile strength and elongation, heat resistance, compression set, resistance to hydrolysis and like properties, and are hence useful as a raw material for various items.

Abstract: A laminated steel sheet for dry forming drawn and ironed cans wherein the steel sheet comprises a steel containing iron, carbon, manganese, aluminum, silicon, phosphorus, sulfur and optionally titanium and/or niobium and wherein the steel sheet is electrolytically chromium-coated and covered on both sides with a 10-50 .mu.m thick thermoplastic resin layer. The sheet sheet has a crystal grain size of 8-30 .mu.m, a surface roughness of 0.05-0.6 .mu.m and a thickness of 0.15-0.3 mm.

Abstract: A method for providing improved specific saturation magnetization of coated iron pigments by coating the iron pigments through contacting them with a solution of a copolymer of a reactive aminoquinone, removing the excess copolymer and drying the coated pigments is provided.

Abstract: An insect abatement system prevents adhesion of insect debris to surfaces which must be kept substantially free of insect debris. An article is coated with an insect abatement coating comprising polyorganosiloxane with a Shore A hardness of less than 50 and a tensile strength of less than 4 MPa. A method for preventing the adhesion of insect debris to surfaces includes the step of applying an insect abatement coating to a surface which must be kept substantially free of insect debris.

Abstract: A biaxially stretched film for packaging, having a thickness of not more than 40 .mu.m; comprising surface layers each made of a propylene-ethylene copolymer resin and an intermediate layer disposed therebetween made of a polyamide resin comprising an aromatic polyamide resin, and having thickness of 10 to 80% of the overall thickness of the biaxially stretched film; and obtained by a process comprising a coextrusion step, a rapid cooling step, and a stretching step.

Abstract: An illuminated sign board which comprises a film having printing, a frame, and a light source is described. The film is a semi-transparent film made of a stretched resin film containing a finely divided powder of a white inorganic material. The semi-transparent film satisfies the following requirements (1) to (4):(1) an opacity of from 40% to 70%;(2) a whiteness of from 80% to 100%;(3) a total light beam average reflectance of from 30 to 60%; and(4) a total light beam average transmittance of from 30% to 70%.

Abstract: A composite material is formed by combining a liquid crystal polymer with a porous or nonporous support membrane to provide either a thin, multiaxially oriented liquid crystal film on the support membrane formed by laminating the liquid crystal polymer onto a porous or nonporous support membrane, followed by multiaxial orientation; or to provide a thin, multiaxially oriented liquid crystal polymer region within a porous support membrane formed by impregnating the liquid crystal polymer into a porous support membrane, followed by multiaxial orientation.

Abstract: A coextruded multilayer polymeric film for use as a chub film having a core layer of an oxygen barrier material and layers disposed on either side of the core layer comprising a blend of an ethylene alpha-olefin copolymer formed from a polymerization reaction in the presence of a single site catalyst and a tie or adhesive, or alternatively a blend of a tie or adhesive and an ethylene acid copolymer, including a neutralized ethylene acid copolymer such as an ionomer. The film also comprises outer sealant layers comprising a blend of an ethylene alpha-olefin copolymer formed from a polymerization reaction in the presence of a single site catalyst and optionally a compound selected from the group consisting of LLDPE, having a density of between about 0.910 g/cc to about 0.940 g/cc, and an ethylene acid copolymer.

Abstract: A metallized ceramic substrate having a smooth plating layer comprises a ceramic substrate containing aluminum nitride as a main component; a tungsten- and/or molybdenum-based metallized layer formed on at least one face of the ceramic substrate; and a nickel-based plating layer formed on the metallized layer wherein the plating layer has a thickness of not greater than 2 .mu.m and a surface roughness (Ra) of not greater than 2 .mu.m. Alternatively, the plating layer on the ceramic substrate may comprise a first nickel-based plating layer having a thickness of not greater than 2 .mu.m and a second gold-based plating layer having a thickness of not greater than 1 .mu.m wherein the gold-based plating layer has a surface roughness (Ra) of 2 .mu.m or less.

Abstract: A polyurethane composition suitable for producing leather-like sheets having a soft hand and excellent durability and being dyeable with acid dyes comprising a mixture of:a first polyurethane (a) obtained by reacting:an intermediate product diol (D) with both ends thereof substantially being OH and obtained by reacting a tertiary amino group-containing diol (A), a polymer diol (B) having a number average molecular weight of 500 to 3,000 selected from the group consisting of polyesters, polycarbonates, polylactones and polyethers and an organic diisocyanate (C1), in such stoichiometric amounts as to make the molar ratio of NCO/OH 0.5 to 0.