Abstract: Disclosed is a reinforcing fibrous material having an improved adhesion, which consists essentially of a surface-treated, molecularly oriented, silane-crosslinked ultra-high-molecular-weight polyethylene fiber, wherein when the measurement is conducted under restraint conditions by using a differential scanning calorimeter, the crosslinked polyethylene fiber has at least two crystal melting peaks (Tp) at temperatures higher by at least 10.degree. C. than the inherent crystal melting temperature (Tm) of the ultra-high-molecular-weight polyethylene determined as the main peak at the time of the second temperature elevation, the heat of fusion based on these crystal melting peaks (Tp) is at least 50% of the whole heat of fusion, and the sum of heat of fusion of high-temperature side peaks (Tp1) at temperatures in the range of from (TM+35).degree. C. to (Tm+120).degree. C.

Abstract: A cracking furnace for thermal cracking of hydrocarbon feedstocks has a central burner provided vertically at the center of the ceiling of a combustion chamber, side burners provided vertically at both sides of the central burner, and reaction tubes vertically arranged between the central burner and resepctive side burners. The reaction tubes are arranged in rows along the longitudinal direction of the chamber and form arch bands at the lower part of the combustion chamber. A combustion gas-inducting duct is provided at the bottom of the chamber, a quenching heat exchanger is provided at the upper part of the chamber, and a reaction tube exit header is provided for connecting a plurality of exits of the reaction tubes to the quenching heat exchanger.

Abstract: A method of producing an alloy containing at least one major ingredient selected from the group consisting of iron (Fe), cobalt (Co), and Nickel (Ni) and having low contents of sulphur, oxygen, and nitrogen, comprises steps of:(a) holding a molten alloy in a container selected from the group consisting of a lime crucible, a lime crucible furnace, a converter and a ladle lined with a basic refractory consisting of 15-85% of calcium oxide (CaO), and 15-75% of magnesium oxide (MgO), wherein said alloy consists essentially of at least one major ingredient selected from the group consisting of iron (Fe), nickel (Ni), and cobalt (Co);(b) adding at least one additive, based on the molten alloy, into said molten alloy in an atmosphere selected from the group consisting of a non-oxidizing atmosphere and a vacuum, wherein said additive is selected from the group consisting of aluminum (Al), aluminum alloys, silicon and silicon alloys;(c) desulphurizing, deoxidizing and denitrifying said molten alloy under an atmosphere

Abstract: An insecticidal resin coating film comprising a combination of an acrylonitrile and/or methacrylonitrile copolymer resin and an insecticidal component selected from the group consisting of specified compounds exhibits an insecticidal effect, since the compound is kept on the surface of the coating film in a state capable of exhibiting its insecticidal effect for a long period of time.

Abstract: An aqueous suspension of a multivalent-metal-modified salicylic acid resin, which is suitable for use in the production of color-developing sheets for pressure-sensitive recording paper sheets, contains a specific multivalent-metal-modified salicylic acid resin at the first-mentioned resin. Fine particles of the specific multivalent-metal-modified salicylic acid is dispersed in an aqueous solution of a dispersant composed of at least one compound selected from the group consisting of:(a) water-soluble anionic high-molecular compounds composed of polyvinyl alcohol derivatives containing sulfonic acid groups in their molecules, and salts thereof,(b) acrylamide-modified polyvinyl alcohols, and(c) water-soluble anionic high-molecular compounds composed of polymers or copolymers comprising particular styrenesulfonic acid derivatives as their essential components.The aqueous dispersion is prepared by finely grinding the specific multivalent-metal-modified salicylic acid in the aqueous solution of the dispersant.

Abstract: In accordance with the present invention, there are provided laminated molded articles excellent in properties such as heat resistance, low-temperature resistance and the like and also excellent in soft touch and hand feel, said laminated molded articles comprising(a) a core layer composed of a synthetic resin,(b) an interlayer (I) composed of a polyolefin foam, polyurethane foam or thermoplastic elastomer foam, formed on said core layer,(c) an interlayer (II) composed of a modified polyolefin elastomer graft modified with at least one graft monomer selected from the group consisting of unsaturated carboxylic acids, derivatives thereof, unsaturated epoxy monomers and unsaturated hydroxy monomers, formed on said interlayer (I), and(d) a surface skin composed of at least one polymer selected from the group consisting of polyamides, polyurethane and polyesters, formed on said interlayer (II), said surface skin being decorated, if necessary, by gigging the surface thereof.

Abstract: A medium for transmitting a motive power, comprising a hydrogenated product of an aromatic hydrocarbon compound substituted, for at least one hydrogen atom on an aromatic nucleus, with a tricyclo[5.2.1.0.sup.2,6 ]-deca-3-yl or tricyclo[5.2.1.0.sup.2,6 ]deca-4-yl group which is unsubstituted or substituted with one or more lower alkyl group.

Abstract: A pellicle is compose of a pellicle frame, a pellicle film spread on one side face of the pellicle frame, and a tacky substance layer having a high light transmittance formed on the inner side face of the pellicle film.

Abstract: In a process for producing 2,6-dihydroxynaphthalene from 2,6-diisopropylnaphthalene, 2,6-diisopropylnaphthalene is oxidized in the presence of a specific proportion of a basic compound to hydroxylate or hydroperoxylate 2,6-diisopropylnaphthalene in a high conversion, and the resulting intermediate is then subjected to acid cleavage in the presence of hydrogen peroxide to produce 2,6-dihydroxynaphthalene in a high yield. The yield of 2,6-dihydroxynaphthalene increases by subjecting the reaction mixture containing the above intermediate to a purifying operation or dehydrating operation or adding acetone to it before it is submitted to the acid cleavage. 2,6-Dihydroxynaphthalene may be reacted with acetic anhydride to obtain 2,6-diacetoxynaphthalene.

Abstract: A thin film of an amorphous alloy comprising (i) at least one element selected from Fe and Co, (ii) at least one element selected from Pt and Pd and (iii) at least one element selected from (a) 3d transition elements other than Fe and Co, (b) 4d transition elements other than Pd, (c) 5d transition elements other than Pt, (d) light rare earth elements, (e) Group III B elements, (f) Group IV B elements, (g) Group V B elements, and (h) Group VI B elements, and the film having an easy axis of magnetization perpendicular to the film face. The thin film has excellent magnetooptical characteristics including increased coercive force and large Kerr-rotation angle and Faraday-rotation angle, and is excellent in resistance to oxidation and in consequence the coercive force and Kerr-angle of the film do not substantially change with time. The film has a high reflectance as well.

Abstract: A structure of a fireproof frame for building opening portions wherein a groove is formed over the entire circumference of a wood frame, which is disposed to a building opening portion, at the surface abutted against an opening member. A non-combustible heat forming sealing material is filled in the groove and the surface of the sealing material is covered with a thin film, which is excellent in heat conductivity, by means of the self bondability of said sealing material.

Abstract: This invention relates to an electrofusion joint, in which the electric power is supplied to a heating wire, which is buried in a resin, to melt the resin and thereby connect pipes together, and more particularly to an electrofusion joint, in which a member to be connected to a sensor-carrying connector is molded unitarily with the joint with a code member, which is to be detected by the sensor, molded unitarily with the member to be connected. A code displayed on the code member is read by the sensor and judged by a control unit as the quantity of power supplied to the heating wire through the connector and the member to be connected, or as the time during which the electric current is thus supplied to the heating wire, whereby an electric power of a predetermined magnitude is supplied thereto.

Abstract: Optical recording media disclosed herein are excellent in recording sensitivity as well as in the adhesion of the substrate to the recording layer, said substrate consisting of a random copolymer of ethylene and a cycloolefin and having a specific structure.

Abstract: A process for the production of polyimide fibers and polyimide fibers obtained by the process. The process includes thermal or chemical imidation of a polyamic acid which has been obtained by reacting a specific diamine and a particular tetracarboxylic dianhydride in the presence of a dicarboxylic anhydride represented by the following formula: ##STR1## wherein Z represents a divalent group selected from the group consisting of monocyclic aromatic groups, fused polycyclic aromatic groups and non-fused polycyclic aromatic groups with aromatic rings bonded together directly or via a crosslinking member.

Abstract: A novel method for preparing an epoxy compound is disclosed which comprises the step of reacting an olefin compound having 4 to 16 carbon atoms with an organic hydroperoxide in an inactive solvent in the presence of a molybdenum compound and at least one metal halide selected from the group consisting of halides of alkali metals and alkaline earth metals, in order to form the corresponding epoxy compound. Typical examples of the aforesaid metal halide include sodium chloride, potassium iodide, sodium bromide and barium chloride. According to the present invention, the epoxy compound having 4 to 16 carbon atoms can be prepared in an extremely high yield.

Abstract: A polymer composition comprising (A) 100 parts by weight of a cyclo-olefinic random copolymer comprising an ethylene component and a cyclo-olefin component and having an intrinsic viscosity [.eta.] of 0.05 to 10 dl/g, a glass transition temperature (Tg) of 50.degree. to 230.degree. C., and a softening point of at least 70.degree. C., (B) 5 to 150 parts by weight of at least one flexible polymer having a glass transition temperature of not more than 0.degree. C. and (C) 0.004 to 1.0 part by weight of an organic peroxide and its reaction product.

Abstract: The present invention relates to a process for preparing molded articles of fiber-reinforced thermoplastic resin (FRTP) by conducting laminated molding of:(a) prepregs comprising woven reinforcing fibers impregnated with thermoplastic resin and containing at least one notch, and(b) sheet prepreg comprising unidirectionally arranged reinforcing fibers impregnated with thermoplastic resin and containing at least one notch in a direction traversing the unidirectionally arranged fibers. The molded articles of FRTP obtained by the process of this invention are high quality products free from warpage, torsion and uneven strength.

Abstract: An indigo compound is prepared by reacting an indole compound unsubstituted at the 2- and 3-positions with an organic hydroperoxide, preferably in the presence of a metallic compound catalyst capable of catalyzing the oxidation of the carton atom at the 3-position of the indole compound, such as a compound of a metal of group 4A, 5A or 6A of the periodic table.

Abstract: A thermoplastic resin composition composed of[A] 5 to 90% by weight of a linear polyolefin having an intrinsic viscosity [.mu.], measured in decalin at 135.degree. C., of 1.0 to 15.0 and a crystallinity of at least 45% and formed substantially of from 8 to 40% of an ultrahigh-molecular-weight polyolefin having an intrinsic viscosity [.mu.], determined at 135.degree. C., of 10 to 40 dl/g and 60 to 92% of a low-molecular-weight to high-molecular-weight polyolefin having an intrinsic viscosity [.mu.], measured in decalin at 135.degree. C., of 0.1 to 5.0 dl/g, and[B] 95 to 10% by weight of at least one type of cyclo-olefin resin having an intrinsic viscosity, measured in decalin at 135.degree. C., of 0.05 to 10 dl/g and a softening temperature of at least 70.degree. C. and selected from ring-opened polymers and ring-opened copolymers derived from cyclo-olefins represented by the following formula [I], ##STR1## wherein n is 0 or a positive integer, R.sup.1 to R.sup.

Abstract: A catalyst component (X") obtained by treating an olefin polymerization catalyst (X) formed from (A) a solid titanium catalyst component comprising magnesium, titanium, halogen and an electron donor as essential ingredients, (B) an organoaluminum compound catalyst component, and as required, (C) an electron donor with an alpha-olefin by preliminarily polymerizing the alpha-olefin in an amount of 0.1 to 500 g per gram of the solid titanium catalyst component (A) in the presence of said catalyst (X), and contacting the treated catalyst (X') with at least 0.1 mole, per gram-atom of titaninum in the treated catalyst (X"), of oxygen. A process for producing the olefin polymerization catalyst component. A catalyst (Y) for olefin polymerization formed from [I] the above catalyst component (X"), [II] an organoaluminum compound catalyst component and as required [III] an electron donor. Also provided is a process for polymerizing olefins in the presence of the olefin polymerization catalyst (Y).