Abstract: A molding resin composition comprising 99.9 to 50% by weight of polyimide represented by the formula: ##STR1## and 0.1 to 50% by weight of polyether ketone resin and/or polyester resin, and more particularly comprising the polyester resin capable of forming an anisotropical molten phase at a temperature of 420.degree. C. or less, and a polyimide-based molding resin composition which comprises the said resins and other additives such as phenolic resin, fluororesin, graphite, carbon fibers, aromatic polyamide fibers, potassium titanate fibers and a crystallization accelerator, and is excellent in thermal resistance, chemical resistance, mechanical strength and processability.

Abstract: L-Phenylalanine is isolated in pure form from an aqueous solution thereof containing cinnamic acid by subjecting the aqueous solution to toluene extraction to extract cinnamic acid therefrom; separating the toluene phase; and then concentrating the aqueous phase, until crystals of L-phenylalanine form therein, while concurrently separating the crystalline L-phenylalanine from the liquid aqueous phase.

Abstract: An adhesive composition for a vinyl halide resin is disclosed. This adhesive composition is formed by incorporating an aliphatic polyamine having a plurality or ether bonds, an alicyclic polyamine or an alkylene diamine into a blend of an epoxy resin and a vinyl chloride copolymer resin. This adhesive composition is effectively used in the solvent-free state for a molded body of a vinyl halide type resin such as a vinyl chloride resin or a vinylidene halide resin.

Abstract: The present invention relates to novel N-vinylimidazolidine derivatives of the following formula (1), a process for producing them, an insecticide containing the derivatives as an effective ingredient, and novelintermediates. The derivatives (1) are useful as agricultural chemicals (particularly, as insecticides) in the fields of agriculture, and the intermediates are useful in various industrial fields, especially as intermediates for agricultural chemicals. ##STR1## where R.sup.1, R.sup.2, Z are as defined in the specification.

Abstract: A process for preparing polyhydroxycarboxylic acid by conducting a dehydration condensation of a hydroxycarboxylic acid or an oligomer thereof in a reaction mixture containing an organic solvent substantially in the absence of water and the polyhydroxycarboxylic acid thus obtained. The process provides polyhydroxycarboxylic acid having excellent properties and processability.

Abstract: A partially crosslinked thermoplastic elastomer composition having an excellent heat-bondability is obtained by dynamically heat-treating a peroxide-crosslinking olefin copolymer rubber with an .alpha.,.beta.-unsaturated carboxylic acid or a derivative thereof in the presence of an organic peroxide.

Abstract: Disclosed herein is a process for the production of cycloolefin random copolymers comprising flash drying a solution of a cylcoolefin random copolymer in a hydrocarbon, said solution being obtained by copolymerization of ethylene and a specific cycloolefin in said hydrocarbon in the presence of a catalyst. Further proposed herein is a process for the production of cycloolefin random copolymers by copolymerization of ethylene with a specific cycloolefin of the in a hydrocarbon in the presence of a catalyst wherein said copolymerization is carried out in a polymerization reactor where a gas phase is not substantially present.

Abstract: A polyester packaging material having a layer formed from a polyester composition as a content contacting layer, wherein the polyester composition comprises 70-95 parts by weight of a polyethylene terephthalate copolymer and 5-30 parts by weight of an ethylene copolymer ionomer. The polyethylene terephthalate copolymer is derived from terephthalic acid (and isophthalic acid, if desired), ethylene glycol and cyclohexanedimethanol (a molar ratio of the ethylene glycol to the cyclohexanedimethanol being within the range of 95/5 to 75/25), and the polyethylene terephthalate copolymer has an endothermic peak of 180.degree. to 240.degree. C. as measured by a differential scanning calorimeter after heated at 130.degree. C. for 5 hours in nitrogen and has an endotherm of 10 to 40 Joule/g at the endothermic peak.

Abstract: A vulcanizable rubber composition containing (i) (A) a chlorine-containing rubber and (B) a triazinethiol.amine salt or (ii) (a) a chlorine-containing rubber, (b) a triazinethiol as a vulcanization agent, and (c), as a vulcanization agent, (c-1) an aromatic carboxylic acid amine salt, (c-2) an aliphatic carboxylic acid amine salt, and (c-3) a phenolamine salt.

Abstract: This invention is to provide a novel process for the isomerization of a cycloolefin having an endo form to a cycloolefin having an exo form. The resulting isomer mixture has a novel composition, and a random copolymer produced from the above compositionally novel isomer mixture and ethylene has an excellent heat resistance and mechanical strength.

Abstract: A joint structure for removably attaching a ball member to an end of a bar member to form a truss structure is disclosed having an engagement member attached to the ball member, which engagement member has an exterior portion extending outwardly of the outer surface of the ball member, and an attachment device associated with the end of the bar member which removably engages the exterior portion of the engagement member. The joint structure according to the present invention may be utilized with bar members with or without tension rods extending through the bar member. The ball structure may be a spherical shell made of metal or fiber reinforced plastic which is located within a hollow concrete sphere. The spherical shell is not removed from the interior of the concrete sphere, but, instead, is used to increase the tensile force resistance of the ball member. The spherical shell may be imbedded in the ball member at the time of forming the concrete ball and can be used as a molding core.

Abstract: A method of molding a fuel tank wherein two baffle plates mounted on a blow-in are inserted in a molten parison of a thermoplastic resin surrounded by a split metal mold. The split metal mold is closed around the parison and a pressurized fluid is fed through the blow-in into the molten parison to blow-mold the fuel tank. The baffle plates, during the blow-molding, are melt-adhered onto the inner wall of the fuel tank. A blow-molded fuel tank containing two baffle plates adhered to the inner wall of the fuel tank is obtained.

Abstract: The present invention relates to a solid catalyst composed of a specific solid catalyst component [A-1], the catalyst containing the solid catalyst and the olefin polymerization process using the solid catalyst, in which the solid catalyst component [A-1] comprises; (a-1) a particulate carrier composed of a specific oxide of a metal; (a-2) an organoaluminum oxy compound; and (a-3) a specific transition metal compound containing a specific ligand, wherein the organoaluminum oxy compound (a-2) and the transition metal compound (a-3) are supported on the particulate carrier (a-1).The catalysts are applicable to a suspension polymerization and a vapor phase polymerization, and capable of preparing spherical olefin polymers excellent in particle characteristics at high polymerization activity.

Abstract: A pyrimidinedione derivative compound has a basic backbone in which a phenyl group part and a pyrimidinedione part are linked by a linking structure comprising an alkyl chain containing two nitrogen atoms. This linking structure is represented by ##STR1## [wherein A is --(CH.sub.2).sub.n --, --CO-- or --O--(CH.sub.2).sub.m --; each of R.sup.1 and R.sup.2 is independently a hydrogen atom or a lower alkyl group which may be substituted by a hydroxyl group, or R.sup.1 and R.sup.2 may be so linked with each other as to make an alkylene chain and thus form a heterocyclic structure; R.sup.5 is a halogen atom, a hydroxyl group, a lower alkyloxycarbonyl group, a lower alkyloxy group which may be substituted by a lower alkyloxy group, or a lower alkyl group which may be substituted by a hydroxyl group, or R.sup.5 may be so linked with R.sup.1 as to make an alkylene chain and thus form a heterocyclic structure; n is 0, 1, 2 or 3 (when R.sup.5 is the hydroxyl group, n.noteq.

Abstract: A method for preparing a carbon fiber-reinforced cement material is here disclosed which comprises the step of using, as a reinforcing material, a carbon fiber from which a gas has been removed by replacing the gas captured in the fiber with water. This method permits providing the carbon fiber-reinforced cement material having a large reinforcing effect by the fiber.

Abstract: A heat-sensitive recording material comprising a color forming, electron donating compound and a salicylic acid derivative represented by the formula (1): ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group or a halogen atom, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group , and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group, and/or a metal salt of the salicylic acid derivative as an electron accepting compound, is disclosed.

Abstract: The present invention discloses a composition for high refractive index plastic lens consisting of a monomer mixture wherein a particular aliphatic thiol compound is added to a polyisocyanate represented by general formula (1): ##STR1## wherein each X represents a hydrogen atom or a methyl group; each R represents a chlorine atom, a bromine atom, a methyl group or an ethyl group; m represents an integer of 0-4; and n represents an integer of 2-4, and a polythiol of formula (2): ##STR2## and a high refractive index plastic lens made of a urethane-containing resin obtained by polymerizing said composition.

Abstract: Herein disclosed are organic thin film EL element having layer structures each of which comprises at least one organic thin film sandwiched between two electrodes, at least one of which is a metal thin film or one of which is a metal thin film and the other of which is a transparent conductive inorganic thin film, and an optional thin film of an inorganic semiconductor positioned between the transparent conductive thin film and the organic thin film, wherein an interfacial layer is fromed between the organic thin film and the metal thin film adjacent to the organic thin film by treating the organic thin film and/or the metal thin film with an organic phosphorus atom-containing compound; and/or wherein an interfacial layer is formed between the organic thin film and the inorganic thin film adjacent to the inorganic thin film by treating the organic thin film and/or the inorganic thin film with a silane-coupling agent.

Abstract: The resin composition of the invention comprises as resin components specific aromatic polyamide (A), a specific graft-modified polymer (B), an aliphatic polyamide (C), and plural antioxidants comprising a hindered phenol type antioxidant (D) having a molecular weight of not less than 500 and a TGA 10% weight loss temperature of not lower than 300.degree. C. and a sulfur type antioxidant (E) having a molecular weight of not less than 600 and a TGA 10% weight loss temperature of not lower than 280.degree. C. The connector of the invention has housing formed from the above-mentioned resin composition. The resin composition of the invention shows excellent heat resistance. The connector of the invention is lightweight and is excellent in heat resistance, water resistance and chemical resistance.

Abstract: An elastomer is molded by a reaction injection molding of polyurethane resins, polyurea resins, polyurethane/urea resins and polyurea/amide resins in the presence of an internal release agent which is a polyester condensate of a saturated or unsaturated fatty acid having a hydroxy group produced by transesterification or a molecular endaminated or iminated polyester condensate. The elastomer has a good releasing property and a good coating property.