Abstract: A nonlinear optical compound of the formula: ##STR1## and optionally a .pi. electron conjugated organic compound having an electron donative group and an electron attractive group, which has high conversion efficiency.

Abstract: An electrically conducting polymer composition which comprises an electron conjugated polymer and at least one stationary dopant which is selected from the group consisting of consisting of an oligomer having ionic groups with an average degree of oligomerization of 3 to 12 and ionic group-bonded particles which have an average particle size of 0.01 to 1 .mu.m and to at least surfaces of which ionic groups are bonded through covalent bonds, and which is dispersed in said electron conjugated polymer, which polymer composition provides an electrolytic capacitor having good frequency characteristics and long-term stability.

Abstract: A process for producing aromatic polymers which comprise subjecting halogenated aromatic compounds or combinations of aromatic compounds and polyhalogenated aromatic compounds to dehydrohalogenation reaction in the presence of a metal halide for condensation. The halogenated aromatic compounds, aromatic compounds and polyhalogenated aromatic compounds include not only those compounds having benzene nucleus or nuclei, but also compounds of aromatic character such as heterocyclic five-membered compounds. A high degree of polymerization is attained according to the process.

Abstract: A composition of nonlinear optical materials is disclosed which comprises two or more organic compounds, at least one of which is a first organic compound with a .pi.-electron conjugated system containing an electron-donative substituent group and an electron-attractive substituent group.

Abstract: A polyacetylene with excellent stretchability can be obtained by a process which comprises polymerizing acetylene with a Ziegler-Natta catalyst consisting of a tetraalkyl titanate and a trialkylaluminum, wherein in the Ziegler-Natta catalyst at least one of the tetraalkyl titanate and the trialkylaluminum has a long chain alkyl group and the molar ratio of al to Ti is 1.5-10.

Abstract: This invention provides a magnetic fluid having a rich hue and containing an organic compound as dispersion medium.The magnetic fluid of this invention is constructed by mixing, into a magnetic dispersion, a colorant prepared by beforehand treating a coloring material with a solubilizing treating agent or a dispersibilizing treating agent. Said solubilizing treating agent or dispersibilizing treating agent has a hydrophobic group and a functional group absorbable or linkable to said coloring material. As said coloring material, a dyestuff, an organic pigment or an inorganic pigment is used. A colorant prepared by subjecting an intermediate of said coloring material to said treatment is also usable. Further, a colorant prepared by pretreating a coloring material so as to give the coloring material an absorbability or a linkability to said solubilizing treating agent or dispersibilizing treating agent and then subjecting the beforehand pretreated coloring material to said treatment is also usable.

Abstract: Polymeric materials consisting essentially of a polymer of recurring units of a five-membered oxygen family heterocyclic ring which is selected from furan, thiophene, selenophene, tellurophene and derivatives thereof. The polymer is doped with anions of the specific type. A method for producing the polymeric materials is also described which comprises electrochemically polymerizing a five-membered oxygen family heterocyclic compound in coexistence with an acceptor with or without use of a supporting electrolyte in such a way that anions of the specific type is taken in the polymerized heterocyclic compound. The polymeric material is obtained in the form of a dense tenacious film.

Abstract: A molding material having low moisture permeability for use in the stators of submersible motors. The molding material comprises approximately 20-30 parts by weight of an epoxy resin, approximately 1-3 parts by weight of a curing agent, approximately 0.5-1.5 parts by weight of zinc stearate, approximately 2-3 parts by weight of a mechanical reinforcing agent, approximately 7.5-56.5 parts by weight of quartz powder, and one or more substances selected from anhydrous gypsum and silica gel, with the total amount of said inorganic substance(s) being approximately 55-20 parts by weight, and with the total amount of quartz powder and said inorganic substance(s) being approximately 62.5-76.5 parts by weight. Because of its low moisture permeability, the insulating properties of the molding material can be maintained indefinitely.

Abstract: This invention provides a magnetic fluid which is diversified in hue and stable in the electric fields.The magnetic fluid of this invention is composed of a dispersion of ferromagnetic particles dispersed by a surfactant, and a colorant having the same charge as the dispersing medium in said dispersing medium.The dyes effective for use in this invention are the nonionic azo dyes, anthrquinone dyes and metal-containing dyes, and the pigments useful in this invention are the organic or inorganic pigments treated so as to have an isoelectric point in the dispersing medium. A magnetic fluid having black color or other desired hues can be obtained by properly selecting the dye and/or pigment.The magnetic fluid of this invention exhibits its excellent properties particularly when used as a recording material.

Abstract: Polymeric materials consisting essentially of a polymer of recurring units of a five-membered oxygen family heterocyclic ring which are selected from furan, thiophene, selenophene, tellurophene and derivatives thereof. The polymer is doped with anions of the specific type. A method for producing the polymeric materials is also described which comprises electrochemically polymerizing a five-membered oxygen family heterocyclic compound in coexistence with an acceptor with or without use of a supporting electrolyte in such a way that anions of the specific type are taken in the polymerized heterocyclic compound. The polymeric material is obtained in the form of a dense tenacious film.

Abstract: The stator core having stator coils thereon of a submersible electric motor is provided with a cylindrical can disposed in engagement with the inner surface of the stator coil and molded resin member is formed completely about the external surface of the core, the end surfaces of the core and the end portions of the coils in engagement with the end portions of the can to completely encapsulate the core and coils. The end portions of the can may be bent outwardly and embedded directly in the molded resin member during the molding thereof with the can located within the core. Alternatively, a mold tool may be located within the core for molding the molded resin member about the stator core and coils and upon removal of the tool a hollow cylindrical can may be located within the core. The end portions of the can are then sealed to the end portions of the molded member. A terminal plate and fastener fittings may also be molded integrally into the molded member.

Abstract: A process for producing 11,11,12,12-tetracyano-9,10-anthraquinodimethane or its derivatives of the general formula ##STR1## in which Z.sub.1, Z.sub.4, Z.sub.5, and Z.sub.8 independently represent hydrogen, chlorine, hydroxy or amino group and Z.sub.2, Z.sub.3, Z.sub.6 and Z.sub.7 independently represent hydrogen, halogen, alkyl which has 1 to 8 carbon atoms, phenyl, alkylphenyl whose alkyl group has 1 to 2 carbon atoms, hyroxyalkly which has 1 to 8 carbon atoms, carboxyalkyl whose alkyl group has 1 to 8 carbon atoms, hydroxy amino, or carboxyl group, the process comprising introduction of dicyanomethyl groups into an anthracene compound of the following general formula at 9 and 10 positions ##STR2## in which Z.sub.1, Z.sub.2, Z.sub.3, Z.sub.4, Z.sub.5, Z.sub.6, Z.sub.7 and Z.sub.8 have the same meanings as defined above, and dehydrogenation of the dicyanomethyl groups.

Abstract: An electrostatic recording medium comprising a support, a conductive layer formed on one surface of the support and made of zinc oxide dispersed in a combination of a cationic polyelectrolyte and a non-conductive binder resin, and a dielectric layer formed on the conductive layer. The cationic polyelectrolyte is contained in an amount of not smaller than 30% by weight of the total of the polyelectrolyte and the binder resin.

Abstract: A molded submersible well motor comprises a hollow cylindrical frame 5 formed of resinous molding material into which a stator assembly having stator cores 2 and coils 3 is molded. End brackets 8 also formed of resinous molding material are detachably secured to opposite ends of the frame to close the openings thereof. A starting switch 12 for the motor is molded into the upper end bracket, together with an interconnecting terminal 9 comprising upper and lower contact posts 91, 92 for connecting the power cable 10 to the stator coils via a connector 6 and an intermediate connector 11, and a sub-receptacle 901, 930 projecting outwardly perpendicular to the main terminal 9 for connection to the starting switch.

Abstract: A method and an apparatus for nozzleless magnetofluidic recording are disclosed in which a magnetofluidic material is arranged on the surface of a support member disposed oppositely to a recording surface, and by applying a magnetic force to the magnetofluidic material, the magnetofluidic material is protruded on the support member. Further, the magnetofluidic material is subjected to a coulomb force or a magnetic force and transferred from the protruded part to the recording surface, thereby producing an image on the recording surface.

Abstract: An electrographic recording medium comprising a conductive layer coated on a support such as of paper and overcoated with a dielectric layer. The conductive layer contains fine particles of an n-type metal oxide semiconductor, preferably a whitish or lightly colored one such as SnO.sub.2, In.sub.2 O.sub.3 or ZnO, dispersed in a binder which may be either a nonconductive polymer or a polyelectrolyte. This recording medium is excellent in recording characteristics and particularly advantageous in its usefullness over a wide humidity range containing very low relative humidities.

Abstract: The resistivity of an n-type metal oxide semiconductor such as SnO.sub.2, In.sub.2 O.sub.3 or ZnO is lowered by treating the metal oxide with a metal halide such as SnX.sub.2 or SbX.sub.3, in which the oxidation number of the metal is smaller than the largest oxidation number the metal can take, so as to allow the metal oxide to generally uniformly come into contact with the metal halide. The treatment can be done at room temperature by, for example, the use of a solution of the metal halide and does not cause discoloration of the treated metal oxide. This process is applicable also to a conductive material comprising as its essential component at least one n-type metal oxide semiconductor.

Abstract: A process of preparing a conductive tin dioxide powder doped with 0.001-2.0 mole % of antimony oxide by heating a mixture of stannous oxalate and an antimony compound, preferably a halide, to form tin dioxide through thermal decomposition of stannous oxalate and accomplish firing of the formed tin dioxide without causing sintering. Preferably the mixture is prepared by using a solution of an antimony halide, followed by evaporation of the solvent. This process gives a tin dioxide powder low in specific resistance for the dopant concentration, high in whiteness and small in particle size.