Abstract: An aqueous resin composition with gas barrier properties contains (i) polyurethane resin having aurethane group and a urea group in a total concentration of 25 to 60% by weight and having a acid value of 5 to 100 mgKOH/g, (ii) a swelling inorganic layered compound (e.g., a water-swelling mica, and a montmorillonite), and (iii) a polyamine compound having an amine value of 100 to 1900 mgKOH/g. The polyurethane resin (i) is obtained by a reaction of (A) an aromatic, araliphatic or alicyclic polyisocyanate, (B) a polyhydroxyalkanecarboxylic acid, and at least one component selected from (C) a C2-8alkylene glycol and (D) a chain-extension agent (e.g., diamine, hydrazine and a hydrazine derivative), and neutralized with a neutralizing agent. The proportion of the acid group of the polyurethane resin (i) relative to the basic nitrogen atom of the polyamine compound (iii) is 10/1 to 1/5 as the equivalent ratio.

Abstract: Adhesive composition and a flexible packaging composite film that can produce a reduced amount of low-molecular-weight compounds eluted into contents of a composite film to prevent spoilage of inherent properties or performances of the contents, can produce improved oil resistance to prevent significant reduction in strength even when used for oily contents, and can develop favorable flexibility of the composite film to prevent reduction in peel strength. Polyester polyamide polyol and/or polyurethane polyester polyamide polyol including an amide bond produced by reaction between a dimer acid and polyamine is prepared as a polyol component and also concentration of a cyclic compound formed by the amide bond and/or an ester bond in extracted water which is extracted from a composite film adhesively bonded by the adhesive composition by water of 0.5 mL/cm2 per unit area of the composite film is set to be 0.

Abstract: A method for producing carbamates that enables carbamates to be produced at low costs, with high selectivity and high yield, and in a simple manner, and a method for producing isocyanates that enables isocyanates industrially used to be produced by using the carbamates obtained by the carbamates producing method. Nonaromatic amine selected from the group consisting of aliphatic amine, alicyclic amine, and aralkyl amine is allowed to react with alkylaryl carbonate to thereby produce carbamates. Also, the carbamates thus obtained are thermally decomposed to thereby produce isocyanates. When carbamates are produced in this method, alkyl carbamates can be obtained with high selectivity and at high yield by using simple equipment. Also, when isocyanates are produced in this method, polyisocyanates used industrially as the raw material of polyurethane can be produced in a simple manner and with efficiency.

Abstract: A spunbonded elastic nonwoven fabric according to the invention comprises fibers formed from a polymer comprising a thermoplastic polyurethane elastomer, wherein the thermoplastic polyurethane elastomer has a solidifying point of 65° C. or above as measured by a differential scanning calorimeter (DSC) and contains 3.00×106 or less polar-solvent-insoluble particles per g as counted on a particle size distribution analyzer, which is based on an electrical sensing zone method, equipped with an aperture tube having an orifice of 100 ?m in diameter, and wherein the fibers have diameters such that the standard deviation of fiber diameters (Sn) divided by the average fiber diameter (Xave) (Sn/Xave) gives a value of 0.15 or less.

Abstract: The paste composition of the present invention is a paste composition comprising (i) a polyurethane resin which comprises (a) a recurring unit represented by the formula (1) and (b) a recurring unit represented by the formula (2), a molar fraction of said recurring unit (a) being in the range of 0.35 to 0.99, a molar fraction of said recurring unit (b) being in the range of 0.01 to 0.65, the total of both the molar fractions being 1, (ii) a solvent and (iii) a powder. By the use of the paste composition, dielectric layers, sealing products, barrier ribs, phosphors, etc. can be favorably formed.

Abstract: To provide an aqueous emulsion composition which has high adhesion strength for a wide variety of materials including molded products and affords sufficient wettability even for the object to be adhesive bonded of low surface polarity so that it can develop sufficient adhesiveness and whose emulsion is stable so satisfactorily as to provide good mechanical stability and storage stability, and to provide an adherent composition comprising the aqueous emulsion composition, at least ethylene-vinyl acetate copolymer or modified resin thereof, photo polymerization initiator, and unsaturated ethylenic monomer are mixed and dissolved or dispersed, to prepare oil drop component, followed by emulsifying the oil drop component in water by using a surface-active agent, whereby an aqueous emulsion composition, in which micelles each encapsulating at least the ethylene-vinyl acetate copolymer or modified resin thereof, the photo polymerization initiator and unsaturated ethylenic monomer are dispersed in water, is prepared

Abstract: A polyurethane resin having a total concentration of the urethane group and the urea group of not less than 15% by weight is prepared by reacting a diisocyanate component (e.g., an aromatic diisocyanate) with a diol component (e.g., a C2–8alkylene glycol). The repeating unit of the polyurethane resin may contain a constitutive unit of an aromatic or alicyclic compound. The polyurethane resin may be shaped into a film for use as a gas barrier film. The film may be a gas barrier composite film composed of a base film layer and a resin layer at least comprising the polyurethane resin. The present invention provides a polyurethane resin excellent in gas barrier properties against water vapor, oxygen, aromatics, and others, and a film containing the same.

Abstract: Adhesive composition and a flexible packaging composite film that can produce a reduced amount of low-molecular-weight compounds eluted into contents of a composite film to prevent spoilage of inherent properties or performances of the contents, can produce improved oil resistance to prevent significant reduction in strength even when used for oily contents, and can develop favorable flexibility of the composite film to prevent reduction in peel strength. Polyester polyamide polyol and/or polyurethane polyester polyamide polyol including an amide bond produced by reaction between a dimer acid and polyamine is prepared as a polyol component and also concentration of a cyclic compound formed by the amide bond and/or an ester bond in extracted water which is extracted from a composite film adhesively bonded by the adhesive composition by water of 0.5 mL/cm2 per unit area of the composite film is set to be 0.

Abstract: A laminate adhesive that can suppress elution of a low molecular weight compounds of a composite film into the content, so as to prevent the inherent properties or performances of the content from being spoiled by the low molecular weight compounds. In the laminate adhesive, the polyester polyol contains naphthalenedicarboxylic acid and/or alkyl ester thereof as an acid component, and concentration of cyclic ester compounds in extracted water, which are extracted from a composite film bonded by the laminate adhesive by water of 0.5 mL/cm2 per unit area of the composite film, is 0.5 ppb or less in terms of dibutyl phthalate concentration measured by a gas chromatograph-flame ionization detector.

Abstract: Polyurethane resin water dispersion being good in storage stability and excellent in initial adhesion and resistance to moist heat, and aqueous polyurethane adhesive employing the polyurethane resin water dispersion. The polyurethane resin water dispersion is produced in the manner that polyisocyanate is allowed to react with polycaprolactone polyol comprising polycaprolactone polyol having a number average molecular weight of not less than 3,000 and active-hydrogen-group-containing compound having anionic group, to synthesize isocyanate terminated prepolymer, first, and, then, the isocyanate terminated prepolymer thus produced is allowed to react with polyamine in water. The use of the polyurethane resin water dispersion can produce the aqueous polyurethane adhesive having improved storage stability, initial adhesion and resistance to moist heat.

Abstract: To provide a laminate adhesive that can keep on having adequate adhesiveness and also can prevent the odor and taste of the inherent properties of the content packed by the packing product from being spoiled even after high temperature sterilization treatment, such as the hot-water spray sterilization treatment, the hot-water rotary sterilization treatment or the steam sterilization treatment, to provide a usage of the laminate adhesive, the laminate adhesive comprises a curing component containing polyisocyanate and a base component containing polyol, wherein a silane coupling agent is contained in at least the curing component. Preferably, the silane coupling agent is mixed with both of the curing component and the base component. Further preferably, epoxysilane is mixed with the curing component and also aminosilane and oxyacid of phosphorus or derivative thereof are mixed with the base component.

Abstract: The solvent-free two-component adhesive composition of the present invention is prepared by a polyol component (A) and a polyisocyanate component (B), wherein the composition comprises at least one polyol component having crystallinity and selected from the group consisting of a polyester polyol, a polyether polyol, a polycarbonate polyol and a polyurethane polyol in an amount of 3 to 50% by weight relative to the total weight of the components (A) and (B). The adhesive composition has the initial viscosity of about 100 to 1,500 mPa·s (in particular, 100 to 1,000 mPa·s) at 70° C. immediately after the components (A) and (B) are mixed together, and the increasing ratio of viscosity after the composition is stood at 70° C. for 10 minutes to the initial viscosity of 120% or less. According to the present invention, a composite laminated film having the good external appearance can be produced simply and effectively.

Abstract: A coating composition capable of forming an alkali-soluble lubricating film, which contains as main components an aqueous polyurethane composition (A) and a lubricating functionality-providing agent (B) at 1-30 wt % with respect to the solid content of the aqueous polyurethane composition, having excellent press moldability and scratch resistance, as well as lubricating surface treated metal articles with excellent press moldability and scratch resistance, that are coated with the coating composition to a dry film thickness of 0.5-5 &mgr;m. The coating composition preferably further contains as a main component silica particles (C) in an amount of 1-30 wt % with respect to the solid content of the aqueous polyurethane composition.

Abstract: A soluble lubricating surface-treated stainless steel sheet with excellent shapability for fuel tanks, comprising a substrate having on both surfaces or one surface thereof a soluble lubricating resin film. Preferably, the soluble lubricating resin film mainly comprises (A) an alkali-soluble polyurethane resin composition containing a carboxyl group or a sulfonic acid group within the molecule and having a glass transition point of 100° C. or more as a dry film and (B) a lubricating function-imparting agent in an amount of from 1 to 30% by mass based on the polyurethane composition.

Abstract: To provide a method for producing polyester polyol that can provide a simple process to produce extensively improved production efficiencies and also produce the polyester polyol of stable in quality, an apparatus for producing the polyester polyol produced by the method, a polyester polyol produced by the method, and a polyurethane foam obtained by use of the polyester polyol produced by the method, polyethylene terephthalate and raw polyol are allowed to react in a reaction vessel to produce polyester polyol and also ethylene glycol which is a by-product of the reaction is distilled off and the distillate is modified in a modifying vessel so that it can have a predetermined hydroxyl value and then is fed to the reaction vessel again as the raw glycol, to thereby produce the polyester polyol.

Abstract: The present invention presents an SMC with which the electrically conductive layer does not break down or become non-uniform during molding and with which molded articles with excellent electromagnetic wave shielding capability and electric conductivity can be produced. This SMC is a thermosetting resin sheet molding compound having at least one continuous layer of electrically conductive fibers with a fiber length of 50 &mgr; to 5 mm, and it is further preferred that electrically conductive powder is uniformly dispersed throughout the entire molding compound. These SMCs can be produced by impregnating a reinforcing material with a thermosetting resin composition which is combined with the above-mentioned electrically conductive fibers, or the electrically conductive fibers and electrically conductive powder, and forming at least one continuous layer of these electrically conductive fibers adjacent to this reinforcement layer.

Abstract: A polyurethane resin having a total concentration of the urethane group and the urea group of not less than 15% by weight is prepared by reacting a diisocyanate component (e.g., an aromatic diisocyanate) with a diol component (e.g., a C2-8alkylene glycol). The repeating unit of the polyurethane resin may contain a constitutive unit of an aromatic or alicyclic compound. The polyurethane resin may be shaped into a film for use as a gas barrier film. The film may be a gas barrier composite film composed of a base film layer and a resin layer at least comprising the polyurethane resin. The present invention provides a polyurethane resin excellent in gas barrier properties against water vapor, oxygen, aromatics, and others, and a film containing the same.

Abstract: An aqueous emulsion composition that has high adhesion strength for a variety of materials so that it can be used for the adhesive bonding of even molded products and an adherent composition containing the aqueous emulsion composition. The aqueous emulsion composition comprises a carboxyl modified resin of a saponified ethylene-vinyl acetate copolymer and a surface active agent. This aqueous emulsion composition can be suitably used as adherent composition, such as an primer and an adhesive, for adhesive bonding a variety of molded products, such as plastic films, plastic sheets, plastic foams, fibers, synthetic leathers and metals. Due to the aqueous composition, the composition can have little risk to catch fire and can provide good sanitation in the environment.

Abstract: A method of recovering a decomposition product from a polyurethane, the method comprising the steps of thermally decomposing a polyurethane into a liquid containing a polyol and a urea compound which is soluble in the polyol, and solids containing a urea compound which is insoluble in the liquid in the presence of a polyamine compound at a temperature of 120 to 250° C.; removing the solids; hydrolyzing the residue with water retained at a high temperature of 200 to 320° C. and a high pressure; and recovering the resulting polyamine and/or polyol.

Abstract: The present invention provides a method of recovering a polyamine compound and/or a polyol compound useful for starting materials of polyurethane resin in an industrially advantageous manner by first dissolving the polyurethane resin such as polyurethane foams discharged in a large amount as industrial wastes in a solubilizing agent containing a polyamine compound, a low molecular glycol or an amino alcohol, hydrolyzing the resulting solution with liquid water at 200 to 320° C., then recovering the polyamino compound and/or polyol compound thus formed.