Abstract: A leader for fly fishing which has a high knot strength and a high tensile tenacity, is free from the formation of a shape-unstable portion (constriction) having a smaller diameter than an average thread diameter of the tippet section and the occurrence of melt fracture at a connecting portion between the tapered section and the tippet section, and shows an excellent natural drift property, can be produced by using a vinylidene fluoride-based resin having an inherent viscosity of 1.0 to 1.7 dl/g.

Abstract: The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec] of 500-100,000 Pa.s;(c) a melting point, Tm of at least 180.degree. C.;(d) a melt enthalpy, .DELTA.Hm of at least 20 J/g; and(e) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form,wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2.day.atm or smaller at the body sidewall thereof, and a production process thereof.

Abstract: A 6-phenoxy picolinic acid alkylidene hydrazide derivative, a process for producing the derivative and a herbicide containing the derivative as an effective ingredient. Such a compound is a novel compound and is useful as an effective ingredient of herbicides.

Abstract: A transfer sheet comprising not less that 75% by mass of a polycarbonate resin, and having a ratio of an infrared absorbency at a wave-number of 155 mm.sup.-1 to that at a wave-number of 160 mm.sup.-1 of not less than 0.02 and less than 0.3, a melting viscosity of not less than 2,500 Pa.multidot.s when measured at 280.degree. C. by a Koka-type flow tester and thickness of 130 to 250 .mu.m. The transfer sheet can satisfy requirements of a mechanical durability, flame retardant properties and a modability simultaneously.

Abstract: A resin composition comprising a poly(phenylene sulfide) resin and .alpha.-alumina, wherein the composition comprises (A) 15 to 45 wt. % of a poly(phenylene sulfide) resin having a melt viscosity of 5 to 100 Pa.multidot.s as measured at 310.degree. C. and a shear rate of 1200/sec, and (B) 85 to 55 wt. % of .alpha.-alumina which contains .alpha.-alumina composed of .alpha.-crystals having an average particle size of at least 5 .mu.m in a proportion of at least 40 wt. %.

Abstract: A method for displaying a reaction path diagram of compound by use of an apparatus comprising an input device, display device, and a storage device, the displaying method of reaction path diagram of compound comprising: a step of preparing a reaction path diagram based on input data and displaying the reaction path diagram on the display device; a step of extracting an end compound accompanied by an undisplayed, adjacent reaction from compounds constituting the reaction path diagram and displaying a guide mark corresponding to the undisplayed, adjacent reaction on the display device; and a step of scrolling the reaction path diagram so as to display an undisplayed compound that makes the undisplayed, adjacent reaction indicated by the selected guide mark, on the display device.

Abstract: An effervescent granular preparation for keeping cut flower freshness includes an azole-substituted cyclopentanol derivative represented by formula (I) (set forth below) and 2-bromo-2-nitro-1, 3-propanediol as effective components and to a process for producing the same. The effervescent granular preparation is produced by granulation of a mixture containing at least one of glucose, D-mannitol and sucrose as an excipient by incorporating an organic acid such as citric acid or malic acid and a hydrogen carbonate such as sodium hydrogen carbonate. ##STR1## wherein A represents a nitrogen atom or a CH group, R.sup.1 and R.sup.2 represent each independently a hydrogen or a C.sub.1 -C.sub.3 alkyl group, and X represents a hydrogen atom or a halogen atom.

Abstract: The present invention provides a computer system configured to produce molecular structure diagrams. The computer system accepts input of bonding atom pair data indicating the bond relation of each atom constituting a compound and has a storage medium for storing the bonding atom pair data that produces a molecular structural diagram of the compound, based on the bonding atom pair data. An atom pair data extraction process section, a classification process section for classifying each atom constituting the compound into either a cyclic portion and a chain portion, a two-dimensional coordinates arithmetic process section for obtaining two-dimensional coordinates of each atom, and a structural diagram production process section provides the molecular structural diagram, based on the two-dimensional coordinates of each atom.

Abstract: A flexible multilayer film suitable as a (food-)packaging material includes a first seal layer comprising principally a metallocene-catalyzed polyolefin, and a second seal layer comprising a copolymer of at least one oxygen-containing monomer and ethylene. The copolymer is set to have a crystal melting point lower than that of the metallocene-catalyzed polyolefin. The second seal layer may preferably have a thickness larger than that of the first seal layer. Because of the provision of the second seal layer adjacent to the first seal layer, the multilayer film is provided with an improved film-formability while retaining the good sealability of the metallocene-catalyzed polyolefin.

Abstract: Disclosed herein are a plastic lens material having both excellent optical and mechanical properties and having a low specific gravity, and a production process for producing the plastic lens material having excellent various properties and a low specific gravity. The plastic lens material comprises a copolymer obtained by radical-polymerizing a reaction product of a component [A] containing a polyhydric alcohol obtained by subjecting a dimer and/or a trimer of a higher unsaturated fatty acid having 11 to 22 carbon atoms with a component [B] containing an isocyanate compound having a radical-polymerizable unsaturated bond in its molecule together with a copolymerizable monomer [C].

Abstract: An injection-molded product is obtained by injection molding a thermoplastic resin material. The thermoplastic resin material comprises a polyglycolic acid homopolymer or copolymer having a repeating unit represented by the following formula (1): ##STR1## in a proportion not lower than 70 wt. % and a repeating unit derived from at least one cyclic comonomer selected from the group consisting of ethylene oxalate and lactide in a proportion not higher than 30 wt. %, and having the following physical properties: (a) a melt viscosity, n*, measured at a temperature of the melting point, Tm, of the polyglycolic acid homopolymer or copolymer +20.degree. C. and a shear rate of 1,000/sec, of 30-10,000 Pa.multidot.s; (b) a melting point, Tm, of at least 150.degree. C.; (c) a melt enthalpy, .DELTA.Hm, of at least 20 J/g; and (d) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form. The injection-molded product has Izod impact strength, unnotched, 25.degree. C., of at least 20 kJ/m.sup.

Abstract: A process for producing N-substituted pyridine carboxamide or thiocarboxamide, comprising reacting a substituted or unsubstituted pyridine metal compound with substituted isocyanate or isothiocyanate to obtain an addition reaction product thereof, and then substituting the metal of said addition reaction product with a proton. The process according to the present invention can be applied even to compounds having an oxidation-susceptible substituent group and, therefore, industrially useful.

Abstract: The invention provides a stretch blow molded container formed from a thermoplastic resin material which comprises polyglycolic acid having(a) a repeating unit represented by the following formula (1): ##STR1## (b) a melt viscosity, .eta.* [as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec] of 500-100,000 Pa.multidot.s;(c) a melting point, Tm of at least 180.degree. C.;(d) a melt enthalpy, .DELTA.Hm of at least 20 J/g; and(e) a density of at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form,wherein the stretch blow molded container has tensile strength (in a circumferential direction) of at least 100 MPa and a carbon dioxide permeability (as measured at a temperature of 23.degree. C. and 80% relative humidity; in terms of the thickness of 50 .mu.m) of 300 cc/m.sup.2 .multidot.day.multidot.atm or smaller at the body sidewall thereof, and a production process thereof.

Abstract: The invention provides a polyglycolic acid sheet obtainable by melt-extruding a thermoplastic resin material into a sheet in a temperature range of from the melting point, Tm of the polymer to 255.degree. C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## and the following physical properties: (a) the melt viscosity, .eta.* ?as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec! being 500-100,000 Pa.s;(b) the melting point, Tm being at least 150.degree. C.;(c) the melt enthalpy, .DELTA.Hm being at least 20 J/g; and(d) the density being at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form, and the sheet has tensile strength of at least 60 MPa, and a production process thereof.

Abstract: A laminate having a laminated structure of at least two layers includes a gas barrier film (A) formed from a mixture containing at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products thereof and a saccharide in a weight ratio of 95:5 to 20:80, and having an oxygen permeability constant of 5.00.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .multidot.h.multidot.atm{Pa} or smaller as measured under conditions of 30.degree. C. and 80% relative humidity, and a layer (B) formed from a thermoplastic resin. The film (A) and the layer (B) are laminated contiguously to each other. A process for the production of a laminate having a laminated structure of at least two layers comprises a step of forming a gas barrier film (A) having an oxygen permeability constant of 5.00.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .multidot.h.multidot.atm{Pa} or smaller as measured under conditions of 30.degree. C.

Abstract: A wrapping film housing carton of a long type for housing a rolled wrapping film therein, comprising at least cutting means for cutting the wrapping film after drawing out the wrapping film through an opening provided in a longitudinal direction of the carton and a film holding section for preventing the end of the wrapping film after cutting from being rewound into the carton, the film holding section comprising a pressure-sensitive adhesive layer of a cured product of a composition containing a polyurethane prepolymer. This constitution enables the film holding section to be formed by printing. The wrapping film housing carton has good and stable wrapping film holding properties and non-temperature-dependency and can realize a reduction in production cost and simplification and acceleration of the production process.

Abstract: The invention provides an oriented polyglycolic acid film formed from a thermoplastic resin material which comprises polyglycolic acid having a repeating unit represented by the following formula (1): ##STR1## and the following physical properties: (a) the melt viscosity, .rho.* ?as measured at a temperature of (the melting point, Tm of the polymer+20.degree. C.) and a shear rate of 100/sec! being 500-100,000 Pa.s;(b) the melting point, Tm being at least 150.degree. C.;(c) the melt enthalpy, .DELTA.Hm being at least 20 J/g; and(d) the density being at least 1.50 g/cm.sup.3 as measured in an unoriented, crystallized form, wherein the film has tensile strength of at least 150 MPa, and production processes thereof.

Abstract: Provided in the present invention are a leader for fly fishing comprising a monofilament of a vinylidene fluoride resin, said leader consisting of a butt section, a taper section and a tippet section, a diametral unevenness of the tippet section being less than 10%, and a process for producing such a leader for fly fishing. The leader for fly fishing according to the present invention has pliability to allow unrestricted movement of the fly and enough strength to withstand the impact of striking, and is also small in diametral unevenness and capable of having its curling disposition or kink easily straightened out.

Abstract: The invention provides a process for producing a poly(arylene sulfide) comprising a dehydration step of heating and dehydrating a mixture containing an organic amide solvent (a), an alkali metal sulfide and water to control a water content in the mixture and a subsequent polymerization step of subjecting the alkali metal sulfide and a dihalo-aromatic compound to a polymerization reaction in the organic amide solvent (a), wherein hydrogen sulfide vaporized off during the dehydration step is absorbed in another organic amide solvent (b) outside a system in which the dehydration step is carried out, thereby recovering it, and the hydrogen sulfide thus recovered is reused in the polymerization reaction as a raw material for the alkali metal sulfide. The production process of the invention can solve various problems attendant upon the vaporization of hydrogen sulfide and provide a poly(arylene sulfide) which undergoes little variation in melt viscosity and has stable quality.

Abstract: A stretched PCTFE (polychlorotrifluoroethylene) film is provided with a good moisture-proofness (low moisture permeability) even at a relatively small thickness and at a small crystallinity The film is characterized by a crystallinity A (%) of 15-75% and a moisture permeability B (mg/m.sup.2.day) at a film thickness of 20 .mu.m, satisfying a relationship of B/(100-A).ltoreq.3.0. The film may suitably be produced through a process characterized by a sequence of a relatively low-temperature melt-extrusion and a low temperature stretching. The film is suitably used for constituting moisture-proof packaged products, such as an EL device or a packaged drug product.