Abstract: An electronic component that includes: a base body; wiring inside the base body; a glass film covering an outer surface of the base body; an underlying electrode electrically connected to the wiring and covering a part of the glass film; and a metal layer covering the underlying electrode, wherein the glass film includes an uncovered portion that is not covered with the underlying electrode and separated from an outer edge of the underlying electrode by more than 10 ?m, and a boundary portion that is not covered with the underlying electrode and not separated from the outer edge of the underlying electrode by more than 10 ?m, and a thickness of the boundary portion is larger than a thickness of the uncovered portion.

Abstract: A controlled release pharmaceutical composition comprises (a) at least one pharmaceutically active substance having a water contact angle (?) such that cos ? is between +0.9848 and ?0.9848, (b) a first intelligent polymer component; and (c) a second intelligent polymer component having opposite wettability characteristics to the first intelligent polymer component, the first and second polymer components being present in a ratio in the range of about 1:100 to about 100:1 by weight. The polymer components are effective for controlled release of the pharmaceutically active substance from the composition.

Abstract: The invention relates a gas barrier multi-layer hollow container having a multi-layer wall structure that a thermoplastic resin layer is laminated on at least one side of a layer formed from polyglycolic acid containing at least 60 wt. % of a repeating unit represented by the following formula (1): wherein the container has excellent oxygen gas barrier property and/or carbon dioxide gas barrier property, and a production process thereof.

Abstract: A composite gas barrier film having a layer structure comprises a thermoplastic resin film laminated on at least one side of a film formed from polyglycolic acid containing at least 60 wt. % of a repeating unit represented by the following formula (1): wherein the polyglycolic acid film is a film formed from polyglycolic acid having a melt viscosity, &eegr;* of 500 to 100,000 Pa•s as measured at a temperature of the melting point of the polymer +20° C. and a shear rate of 100/sec, a melting point Tm of at least 150° C., and a melt enthalpy, &Dgr;Hm of at least 20 J/g. An adhesive layer is provided between the polyglycolic acid film and the thermoplastic resin film. The film has excellent oxygen gas barrier property and/or carbon dioxide gas barrier property.

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: 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: 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: 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: A polycarbonate resin composition is given as a mixture of (A) 97-50 wt. % of a polycarbonate resin, and (B) 3-50 wt. % of a graft copolymer. The graft copolymer is obtained by graft-polymerizing 50-95 wt. parts of a monomer selected from (b1) a monomer mixture comprising 60-90 wt. % of an aromatic vinyl monomer, 40-10 wt. % of a vinyl cyanide monomer, and 0-30 wt. % of a monomer copolymerizable with the monomers and (b2) an alkyl methacrylate having an alkyl group including 1-4 carbon atoms in the presence of a latex containing 5-50 wt. parts of a rubber polymer with respect to the total of the monomer and the rubber polymer as 100 wt. parts. The graft copolymer includes a graft-polymerized component having a weight-average molecular weight 50.times.10.sup.4 -300.times.10.sup.4. The polycarbonate resin composition shows a good extrudability and provides a sheet product which exhibits good thermoforming characteristics, such as suppressed drawdown and good deep drawability.

Abstract: A composition is disclosed, comprising(1) a polyamide as a dispersed phase and(2) a polyarylene sulfide as a continuous phase, wherein at least a part of the polyarylene sulfide has at least one modifying group directly bonded to the aromatic ring thereof, where the modifying group is selected from the group consisting of a carboxyl group, an alkali metal salt of a carboxyl group, and an alkaline earth metal salt of a carboxyl group, and where the modifying group is present at a ratio of 10 or more millimoles of the modifying group per kilogram of the polyamide. The composition has improved mechanical strength.

Abstract: Disclosed herein is a process for the production of an arylene thioether copolymer (C), wherein an alkali metal sulfide is caused to act on a poly(arylene thioether) (A) having predominant recurring units of the formula [I]: ##STR1## wherein R denotes an alkyl group having 1-6 carbon atoms, and 1 stands for 0 or an integer of 1-4, in a water-containing polar organic solvent so as to depolymerize the poly(arylene thioether) (A), thereby preparing a prepolymer (B) having an alkali thiolate group on at least one terminal thereof and the resultant prepolymer (B) is then subjected to a polymerization reaction with at least one dihalogen-substituted aromatic compound.

Abstract: Disclosed herein are a process for the preparation of a carboxylated arylene thioether oligomer, in which an alkali metal sulfide is caused to act on a poly(arylene thioether) so as to depolymerize the poly(arylene thioether), thereby preparing an alkali thiolate-containing oligomer, and a carboxylating agent is then caused to act on the alkali thiolate-containing oligomer, thereby forming the carboxylated arylene thioether oligomer, and a process for the production of an arylene thioether copolymer, wherein the carboxylated arylene thioether oligomer alone, which has been obtained in accordance with this preparation process, or a mixture of the carboxylated oligomer in an amount of at least 50 wt. % and another carboxylic compound in an amount less than 50 wt. % is reacted with an alkylenediol or an alkylenediol and a polyester or an alkylene diol and a lactone.

Abstract: Disclosed herein are a process for the preparation of a carboxylated arylene thioether oligomer, in which an alkali metal sulfide is caused to act on a poly(arylene thioether) so as to depolymerize the poly(arylene thioether), thereby preparing an alkali thiolate-containing oligomer, and a carboxylating agent is then caused to act on the alkali thiolate-containing oligomer, thereby forming the carboxylated arylene thioether oligomer, and a process for the production of an arylene thioether copolymer, wherein the carboxylated arylene thioether oligomer alone, which has been obtained in accordance with this preparation process, or a mixture of the carboxylated oligomer in an amount of at least 50 wt. % and another carboxylic compound in an amount less than 50 wt. % is reacted with an alkylenediol or an alkylenediol and a polyester or an alkylene diol and a lactone.

Abstract: Disclosed herein are a process for the preparation of a carboxylated arylene thioether oligomer, in which an alkali metal sulfide is caused to act on a poly(arylene thioether) so as to depolymerize the poly(arylene thioether), thereby preparing an alkali thiolate-containing oligomer, and a carboxylating agent is then caused to act on the alkali thiolate-containing oligomer, thereby forming the carboxylated arylene thioether oligomer, and a process for the production of an arylene thioether copolymer, wherein the carboxylated arylene thioether oligomer alone, which has been obtained in accordance with this preparation process, or a mixture of the carboxylated oligomer in an amount of at least 50 wt. % and another carboxylic compound in an amount less than 50 wt. % is reacted with an alkylenediol or an alkylenediol and a polyester or an alkylene diol and a lactone.

Abstract: Disclosed herein are a process for the preparation of a carboxylated arylene thioether oligomer, in which an alkali metal sulfide is caused to act on a poly(arylene thioether) so as to depolymerize the poly(arylene thioether), thereby preparing an alkali thiolate-containing oligomer, and a carboxylating agent is then caused to act on the alkali thiolate-containing oligomer, thereby forming the carboxylated arylene thioether oligomer, and a process for the production of an arylene thioether copolymer, wherein the carboxylated arylene thioether oligomer alone, which has been obtained in accordance with this preparation process, or a mixture of the carboxylated oligomer in an amount of at least 50 wt. % and another carboxylic compound in an amount less than 50 wt. % is reacted with an alkylenediol or an alkylenediol and a polyester or an alkylene diol and a lactone.

Abstract: Disclosed herein is a process for the production of a granular poly(arylene thioether) copolymer by polymerizing an alkali metal sulfide with dihalo-aromatic compounds including at least one dihalo-aromatic carboxylic acid in a polar solvent containing water. Upon the polymerization, at least a part of the dihalo-aromatic carboxylic acid is converted into an alkaline earth metal salt in advance, the hydroxide and/or oxide of an alkaline earth metal is added together with the dihalo-aromatic carboxylic acid to the polymerization reaction system, or the hydroxide and/or oxide of an alkaline earth metal is added together with an alkaline earth metal salt of the dihalo-aromatic carboxylic acid and the dihalo-aromatic carboxylic acid to the polymerization reaction system.

Abstract: In a process for producing a rubber-containing graft copolymer, which comprises bringing a latex of a graft copolymer comprising 60% to 90% by weight of a rubbery polymer and 40% to 10% by weight of a hard polymer, said graft copolymer latex being obtained by emulsion polymerizing a hard polymer-forming monomer in a latex of said rubbery polymer and having a minimum film-forming temperature of 75.degree. C. or less, into contact with an aqueous electrolyte solution under stirring, thereby to coagulate the latex, and recovering the precipitated graft copolymer, the improvement is disclosed such that the graft copolymer latex is subjected to slow coagulation so as to allow the graft copolymer to precipitate as substantially spherical particles, wherein the term "slow coagulation" refers to coagulation which proceeds at a milder rate than that of coagulation in which the aqueous electrolyte solution is hydrochloric acid and the pH of the latex during coagulation is 1.8 or less.