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: 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: 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: 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 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 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 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: 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: 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 olefin polymerization catalyst formed from (A) a solid titanium catalyst component containing magnesium, titanium and halogen as essential ingredients, (B) an organoaluminum compound, and (C) an organosilicon compound containing a cyclopentyl group, a cyclopentenyl group, a cyclopentadienyl group or a derivative derived from any of these groups.A polymerization process which comprises polymerizing or copolymerizing olefins in the presence of the olefin polymerization catalyst to form a homopolyolefin having a high stereoregularity or a copolyolefin having a narrow composition distribution.

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).

Abstract: In accordance with the present invention, there are provided benzene-insoluble organoaluminum oxy-compounds having less than 10% in terms of Al atom of Al component dissolving in benzene kept at 60.degree. C. and less than 0.09 of a (D.sub.1260 /D.sub.1220) of an absorbance (D.sub.1260) at 1260 cm.sup.-1 to an absorbance (D.sub.1220) at 1220 cm.sup.-1, both obtained by infrared spectrophotometry, and also processes for preparing said benzene-insoluble organoaluminum oxy-compounds.

Abstract: 2-Pyrazoline derivatives of the formula (A): ##STR1## where R.sup.1 is a pyridyl, a pyrazyl or an alkoxyl group; and R.sup.2 is a hydrogen atom, an alkyl, a pyridyl, a furyl, phenyl or a substituted phenyl group, and to a process for producing the same. Therapeutic agents for treating cerebrovascular diseases containing, as the active ingredient, a 2-pyrazoline derivative represented by the formula (G): ##STR2## where R.sup.3 is a hydrogen atom, an alkyl, acetyl, an alkoxycarbonyl, an amino, benzoyl, a substituted benzoyl, a pyridylcarbonyl, a furylcabonyl, a thienylcarbonyl, a pyrazylocarbonyl, an N-substituted carbamoyl, an N-substituted thiocarbamoyl, or carboxyl group; and R.sup.4 is a hydrogen atom, an alkyl, a pyridyl, a thienyl, a furyl, cyclohexyl, phenyl or a substituted phenyl group or a pharmaceutically acceptable salt thereof.

Abstract: This invention relates to a process for preparing fiber-reinforced thermoplastic (FRTP) molded articles comprising stacking sheet prepregs comprising unidirectionally arranged reinforcing fibers impregnated with thermoplastic resin and molding the same, and to a process for preparing FRTP molded articles by using woven reinforcing fibers in place of unidirectionally arranged reinforcing fibers. The FRTP molded articles obtained by the process of this invention have high quality and can be molded without unevenness in strength.

Abstract: A laminated film comprising(A) a layer of a polymer of 4-methyl-1-pentene,(B) an interlayer of a mixture of (a) a polymer of 4-methyl-1-pentene and (b) an alpha-olefin copolymer comprising 10 to 85 mole % of propylene units, 3 to 60 mole % of 1-butene units and 10 to 85 mole % of units of an alphaolefin having at least 5 carbon atoms, the proportions being based on the total amount of the propylene units, the 1-butene units and the other alpha-olefin units, having a crystallinity, determined by X-ray diffractometry, of not more than 20%, and(C) a layer of a polyolefin derived from an alpha-olefin having 2 to 4 carbon atoms, as a main component,the layers (A), (B) and (C) being laminated in the order stated.

Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistance occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.

Abstract: A damping device has a liquid vessel into which the liquid is injected having the flattening wave motion water surface formed in such a manner that the wave motion direction of the wave motion water surface is a strecher one, damping members are provided in order to damp the sloshing of liquid in the liquid vessel, and wave dissipation devices are disposed at the portion which isn't always soaked in liquid in the liquid vessel. Accordingly, the vibration in a construction occurring by wind, earthquake and the like is absorbed by means of viscosity resistence occurring between liquid and damping member, and the vibration is restricted. Moreover, damping performance can be efficiently exercised by providing various kinds of installation forms.