Abstract: The invention provides an injection-molded product of polyglycolic acid obtainable by molding a thermoplastic resin material at an injection temperature ranging from the melting point, Tm of the polymer to 255° C., wherein the thermoplastic resin material comprises polyglycolic acid having a repeating unit represented by the following formula (1): and the following physical properties: (a) the melt viscosity, &eegr;* [as measured at a temperature of (the melting point, Tm of the polymer+20° C.) and a shear rate of 1,000/sec] being 30-10,000 Pa·s; (b) the melting point, Tm being at least 150° C.; (c) the melt enthalpy, &Dgr;Hm being at least 20 J/g; and (d) the density being at least 1.50 g/cm3 as measured in an unoriented, crystallized form, and a production process thereof.

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 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: 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: 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: 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: 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: 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: In a process for producing poly(phenylene sulfide), in which an alkali metal sulfide is reacted with a dihalo-aromatic compound in an organic amide solvent, the reaction is conducted through the following Steps 1 and 2, thereby efficiently providing granular, high-molecular weight poly(phenylene sulfide) having excellent whiteness in a short period of time and at a high yield. Step 1: a step comprising reacting the alkali metal sulfide with the dihalo-aromatic compound within a temperature range of 170.degree.-270.degree. C. in the organic amide solvent containing water in a proportion of 0.5-2.0 moles per mole of the alkali metal sulfide charged while raising the reaction temperature at an average heating rate of 0.1.degree.-1.degree. C./min in at least a temperature range of from 220.degree. C. to 240.degree. C.

Abstract: A composite deposited film including (A) a polymeric film substrate; (B) a deposit of an inorganic material formed on at least one side of the polymeric film substrate (A); and (C) a water-resistant film laminated on the deposit (B) and formed from a mixture containing a polycarboxylic acid or a partially neutralized product thereof and a saccharide in a weight ratio of 95:5 to 20:80 is provided. A production process of a composite deposited film, which includes the steps of forming a deposit (B) of an inorganic material on at least one side of a polymeric film substrate (A); casting a solution of a mixture containing a polycarboxylic acid or a partially neutralized product thereof and a saccharide in a weight ratio of 95:5 to 20:80 on the deposit (B); drying the mixture to form a film; and then subjecting the resultant dry film to a heat treatment at a temperature not lower than 100.degree. C. (373 K), thereby forming a water-resistant film (C) on the deposit (B), is also provided.

Abstract: The invention provides poly(ethylene oxalate) containing recurring units represented by the following formula (1): ##STR1## in a proportion of at least 60 basal mol %, wherein (a) the solution viscosity (.eta..sub.inh) is at least 0.25 dl/g as measured at 30.degree. C. and a polymer concentration of 0.40 g/dl in a 4:1 (by weight) mixed solvent of m-chlorophenol and 1,2,4-trichloro-benzene,(b) the melt viscosity (.eta.*) is at least 30 Pa.s as measured at 190.degree. C. and a shear rate of 1,000/sec, and(c) the density is at least 1.48 g/cm.sup.3 as measured in an amorphous state,various products formed or molded from the poly(ethylene oxalate) and a production process of the poly(ethylene oxalate). The polymer is high-molecular weight and excellent in melt processability, heat resistance, crystalline properties, mechanical properties and the like, and has good degradability in soil.

Abstract: An N-(substituted amino)imide derivative represented by the formula (I) is a novel compound which can be utilized as an effective ingredient of herbicidal compositions. ##STR1## wherein, R.sup.1 is hydrogen atom, C.sub.1 -C.sub.4 alkyl group, C.sub.7 -C.sub.9 aralkyl group, C.sub.1 -C.sub.4 haloalkyl group, (C.sub.1 -C.sub.4 alkyl)carbonyl group or (C.sub.1 -C.sub.4 alkyl)sulfonyl group;A represents a structure selected from the group consisting of the following formulas (A-1), (A-2), (A-3), (A-4) and (A-5) ##STR2## wherein R.sup.2 and R.sup.3 in the formula (A-1) are independently hydrogen atom or C.sub.1 -C.sub.4 alkyl group, but not R.sup.2 =R.sup.3 =H, R.sup.4 in the formula (A-4) is halogen atom, C.sub.1 -C.sub.4 alkyl group and/or nitro group, m is an integer of 0-4, the substituents of m not less than 2 being same or different;X.sup.1 and X.sup.2 are independently hydrogen atom, halogen atom, C.sub.1 -C.sub.4 alkyl group, C.sub.1 -C.sub.4 alkoxy group, C.sub.1 -C.sub.4 alkylthio group, C.sub.1 -C.sub.

Abstract: A poly(arylene sulfide) resin composition comprising in admixture a poly(arylene sulfide) resin and at least one nickel compound selected from the group consisting of (a) nickel carbonates, (b) nickel hydroxide, (c) organic carboxylates of nickel and (d) nickel oxide is provided. According to the resin composition of the invention, the metal corrosiveness of the poly(arylene sulfide) resin upon and after its molding or forming is sufficiently inhibited without deteriorating the excellent heat resistance, mechanical properties, processability and the like inherent in the resin.

Abstract: Disclosed herein is a gas barrier film formed from a mixture containing (A) at least one poly(meth)acrylic acid polymer selected from the group consisting of poly(meth)acrylic acid and partially neutralized products of poly(meth)acrylic acid and (B) a saccharide in a weight ratio of 95:5 to 20:80, and having an oxygen gas permeability coefficient of 5.00.times.10.sup.-3 ml(STP).multidot.cm/m.sup.2 .multidot.h.multidot.atm{Pa} or lower as measured under conditions of 30.degree. C. and 80% relative humidity. A production process of the gas barrier film, in which a film is formed from the mixture, and then subjected to a heat treatment under specific conditions, is also disclosed.

Abstract: This invention is to provide an N-(substituted amino)pyrrole derivative represented by the formula (I): which is used as an effective ingredient of herbicidal compositions: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently hydrogen atom halogen atom, C.sub.1 -C.sub.4 alkyl group, (C.sub.1 -C.sub.4 alkyl)carbonyl group, (C.sub.3 -C.sub.6 cycloalkyl)carbonyl group, (C.sub.1 -C.sub.4 haloalkyl)carbonyl group, (C.sub.3 -C.sub.5 alkenyl)carbonyl group, benzoyl group which may be substituted with 1-3 halogen atoms and/or C.sub.1 -C.sub.4 alkyl groups, N,N-[(di-C.sub.1 -C.sub.4 alkyl)amino]carbonyl group, (C.sub.1 -C.sub.4 alkoxy)carbonyl group, etc., X.sup.1 and X.sup.2 are independently hydrogen atom, halogen atom, C.sub.1 -C.sub.4 alkyl group, C.sub.1 -C.sub.4 alkoxy group, etc., and Z is nitrogen atom or CH.

Abstract: Disclosed herein is a process for the production of an alkylene thioether-arylene thioether copolymer, which comprises copolymerizably reacting a compound having at least one alkali thiolate group and obtained by causing an alkali metal sulfide to act on a poly(arylene thioether) in a water-containing polar organic solvent so as to depolymerize the poly(arylene thioether) with a dihalogen-substituted aliphatic compound in a water-containing polar organic solvent.

Abstract: This invention is to provide an N-(substituted amino)pyrrole derivative represented by the formula (I): which is used as an effective ingredient of herbicidal compositions: ##STR1## wherein R.sup.2, R.sup.3, R.sup.4 and R.sup.5 is independently hydrogen atom, halogen atom, C.sub.1 -C.sub.4 alkyl group, (C.sub.1 -C.sub.4 alkyl)carbonyl group, (C.sub.3 -C.sub.6 cycloalkyl) carbonyl group, (C.sub.1 -C.sub.4 haloalkyl)carbonyl group, (C.sub.3 -C.sub.5 alkenyl)carbonyl group, benzoyl group which may be substituted with 1-3 halogen atoms and/or C.sub.1 -C.sub.4 alkyl groups, N,N-[(di-C.sub.1 -C.sub.4 alkyl)amino]carbonyl group, (C.sub.1 -C.sub.4 alkoxy)carbonyl group, etc., X.sup.1 and X.sup.2 are independently hydrogen atom, halogen atom, C.sub.1 -C.sub.4 alkyl group, C.sub.1 -C.sub.4 alkoxy group, etc., and Z is nitrogen atom or CH.

Abstract: Disclosed is an acetyltransferase activity measuring agent which contains an arylamine derivative. As the arylamine derivative, sodium p-aminohippurate can be used preferably. Use of the acetyltransferase activity measuring agent of this invention permits a simple and safe diagnosis of the progress of the pathema of nephritis, which is accompanied by a mesangial proliferative lesion, or renal insufficiency. Furthermore, the scattering of measured values is small, thereby assuring an accurate diagnosis.