Abstract: In a pneumatic tire production method including a step of overlapping end portions of a sheet laminate and vulcanization-molding the tire, the sheet laminate being obtained by layering an elastomer layer and a sheet of a thermoplastic resin composition containing a thermoplastic resin or a blend of a thermoplastic resin and an elastomer, after the end portions of the sheet laminate are overlapped, the overlapped portion of the sheet laminate is compression-bonded at a temperature of not less than a glass transition temperature Tg of the thermoplastic resin and not greater than 120° C.

Abstract: A laminate of a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, which can be used as an inner liner for a pneumatic tire, with improved adhesive strength at the interface of the thermoplastic resin or thermoplastic elastomer composition film and the rubber composition layer. A laminate comprising a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, the rubber composition containing a rubber component, a condensate of a phenol compound and formaldehyde, and methylene donor and a vulcanizing agent, wherein 2.5-40% by mass of the rubber component is butyl rubber or halogenated butyl rubber, the content of the condensate is 0.5-20 parts by mass per 100 parts by mass of the rubber component, and the content of the methylene donor is 0.25-200 parts by mass per 100 parts by mass of the rubber component.

Abstract: A laminate of a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, which can be used as an inner liner for a pneumatic tire, with improved adhesive strength at the interface of the thermoplastic resin or thermoplastic elastomer composition film and the rubber composition layer. A laminate comprising a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, the rubber composition containing a rubber component, a condensate of a phenol compound and formaldehyde, and methylene donor and a vulcanizing agent, wherein 2.5-40% by mass of the rubber component is halogenated isomonoolefin-p-alkyl styrene copolymer, the content of the condensate is 0.5-20 parts by mass per 100 parts by mass of the rubber component, and the content of the methylene donor is 0.25-200 parts by mass per 100 parts by mass of the rubber component.

Abstract: Provided is a laminate which comprises a layer of a polyimide resin and a layer of an unvulcanized rubber composition, and wherein the rubber composition contains (A) a rubber component, (B) 20-100 parts by mass of a polyamide polyether elastomer per 100 parts by mass of the rubber component (A), (C) a condensation product of formaldehyde and a compound represented by formula (1) (wherein each of R1, R2, R3, R4 and R5 is independently selected from the group consisting of a hydrogen atom, a hydroxyl group, an alkyl group having 1-8 carbon atoms, a hydroxyalkyl group having 1-8 carbon atoms and an alkoxide group having 1-8 carbon atoms), (D) a methylene donor and (E) a vulcanizing agent. A laminate according to the present invention exhibits improved bonding strength between a layer of a polyimide resin and a layer of a rubber composition.

Abstract: A laminate for tires is a laminate of a layer of a rubber composition and a film comprising a thermoplastic resin or a thermoplastic elastomer composition; upon dynamic distortion of the film being 0.1%, a storage elastic modulus at 70° C. being 30 MPa or greater, and a thickness of the film being 60 ?m or greater; upon dynamic distortion of the rubber composition being 0.1%, a storage elastic modulus at ?20° C. being less than 400 MPa and a storage elastic modulus at 70° C. being 8.5 MPa or greater, and a thickness of the rubber composition being 150 ?m or greater; and a peel strength between the film and the rubber composition determined by 180° peel test being 30 N/inch or greater.

Abstract: This tire laminate comprises a film of a thermoplastic resin composition and a layer of a rubber composition, and is characterized in that the rubber composition contains at least one type of rubber component, a condensate of formaldehyde and the compound represented by formula (1) (R1 to R5 in the formula are defined in the specification), at least one type of methylene donor and a vulcanizing agent, and in that there are 0.5-20 parts by mass of the condensate per total 100 parts by mass of the at least one type of rubber component, there are 0.25-200 parts by mass of the at least one type of methylene donor per total 100 parts by mass of the at least one type of rubber component, the mass ratio of the at least one type of methylene donor and the condensate is 0.

Abstract: A pneumatic tire includes an inner liner layer formed from a laminate sheet obtained by laminating: a sheet made from a thermoplastic resin or a thermoplastic resin composition which is a blend of the thermoplastic resin and an elastomer; and a rubber bonded by curing to the thermoplastic resin or the thermoplastic resin composition. The pneumatic tire avoids occurrence of cracks near a splice portion of the inner liner layer after the pneumatic tire starts to be used for driving, and thereby achieves excellent durability. In the tire, an inner liner layer is formed by lap-splicing end portions of a laminate sheet which is obtained by the laminating A sheet with end portions each having a tip subjected to a tip sharpening process is used as the sheet made from the thermoplastic resin or the thermoplastic resin composition which is the blend of the thermoplastic resin and the elastomer.

Abstract: With respect to a laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition in which an epoxidized natural rubber is blended, the adhesion between the film and the layer of the rubber composition is improved without using a large amount of the epoxidized natural rubber. A laminate of a film formed of a thermoplastic resin or thermoplastic elastomer composition and a layer formed of a rubber composition, said laminate being characterized in that: 5-60% by mass of a rubber component contained in the rubber composition is composed of an epoxidized natural rubber and 20-50% by mass of the rubber component is composed of a butadiene rubber; and the rubber composition contains an unsubstituted or substituted aromatic carboxylic acid having a pKa of 1.5-4.0 in an amount of 0.5-5 parts by mass per 100 parts by mass of the rubber component.

Abstract: A laminate of a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, which can be used as an inner liner for a pneumatic tire, with improved adhesive strength at the interface of the thermoplastic resin or thermoplastic elastomer composition film and the rubber composition layer. A laminate comprising a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, the rubber composition containing a rubber component, a condensate of a phenol compound and formaldehyde, and methylene donor and a vulcanizing agent, wherein 2.5-40% by mass of the rubber component is halogenated isomonoolefin-p-alkyl styrene copolymer, the content of the condensate is 0.5-20 parts by mass per 100 parts by mass of the rubber component, and the content of the methylene donor is 0.25-200 parts by mass per 100 parts by mass of the rubber component.

Abstract: A laminate of a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, which can be used as an inner liner for a pneumatic tire, with improved adhesive strength at the interface of the thermoplastic resin or thermoplastic elastomer composition film and the rubber composition layer. A laminate comprising a thermoplastic resin or thermoplastic elastomer composition film and a rubber composition layer, the rubber composition containing a rubber component, a condensate of a phenol compound and formaldehyde, and methylene donor and a vulcanizing agent, wherein 2.5-40% by mass of the rubber component is butyl rubber or halogenated butyl rubber, the content of the condensate is 0.5-20 parts by mass per 100 parts by mass of the rubber component, and the content of the methylene donor is 0.25-200 parts by mass per 100 parts by mass of the rubber component.

Abstract: A method for manufacturing a pneumatic tire includes preparing a sheet made from a thermoplastic resin or a thermoplastic resin composition which is a blend of the thermoplastic resin and an elastomer, tip-sharpening end portions of the sheet to form sharpened tips, preparing a laminate by laminating the sheet and a rubber such that the rubber forms an inner layer with respect to the sheet, lap-splicing end portions of the laminate, which include the sharpened tips of the sheet, to form a lap splice portion, and curing and molding the laminate in which the lap splice portion is formed to form an inner liner layer of the pneumatic tire after the tip-sharpening of the end portions of the sheet.

Abstract: A pneumatic tire is configured in such a manner that at least two carcass layers each have both end portions in the tire width direction extending to bead cores disposed in both bead portions, and the both end portions are wound up from the inner side in the tire width direction of the bead cores to the outer side in the tire width direction, and extend outward in the tire radial direction. In such a pneumatic tire, the carcass layers are formed by thermoplastic sheets, and a rubber layer is disposed at least between adjacent sheets of the thermoplastic sheets.

Abstract: A pneumatic tire comprising: an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer; a coating rubber layer; and a tie rubber layer; the pneumatic tire being configured to effectively prevent separation of the inner liner layer. In a pneumatic tire comprising an inner liner layer formed from a thermoplastic resin or a thermoplastic elastomer composition obtained by blending a thermoplastic resin with an elastomer, a tie rubber layer, and a coating rubber layer, the coating rubber layer and the inner liner layer are disposed in a manner such that the coating rubber layer and the inner liner layer overlap each other, and a rubber composition in at least a region of the coating rubber layer where the coating rubber layer and the inner liner layer overlap has an adhesion to the inner liner layer.

Abstract: Methods of preparing a second high-efficiency, rhenium-promoted silver catalyst for producing alkylene oxide from an alkylene based on a first catalyst are disclosed and described. In accordance with the disclosed methods, the first and second catalysts include at least one promoter that includes a rhenium promoter. The target catalyst concentrations of one or more promoters of the at least one promoter on the second catalyst are determined based on the values of a catalyst reference property for the two catalysts and the concentration of the one or more promoters of the at least one promoter on the first catalyst. Suitable catalyst reference properties include carrier specific surface area and silver specific surface area. Reaction systems utilizing the first and second catalysts are also described.

Abstract: A laminate which is obtained by providing a layer of an adhesive composition, wherein an epoxy-modified elastomer is blended, between a film of a thermoplastic resin or thermoplastic elastomer composition and a layer of a rubber composition, and in which the adhesion between the film and the layer of a rubber composition is further improved. This laminate is characterized in that: the adhesive composition contains a tackifying agent, a vulcanization accelerator, an elastomer and an unsubstituted or substituted aromatic carboxylic acid having a pKa of 1.5-4.0; 50-100% by mass of the elastomer is an epoxy-modified elastomer; and the amount of the aromatic carboxylic acid is 0.5-5 parts by mass per 100 parts by mass of the elastomer.

Abstract: This tire laminate comprises a film of a thermoplastic resin composition and a layer of a rubber composition, and is characterized in that the rubber composition contains at least one type of rubber component, a condensate of formaldehyde and the compound represented by formula (1) (R1 to R5 in the formula are defined in the specification), at least one type of methylene donor and a vulcanizing agent, and in that there are 0.5-20 parts by mass of the condensate per total 100 parts by mass of the at least one type of rubber component, there are 0.25-200 parts by mass of the at least one type of methylene donor per total 100 parts by mass of the at least one type of rubber component, the mass ratio of the at least one type of methylene donor and the condensate is 0.

Abstract: This tire laminate comprises a film of a thermoplastic resin composition and a layer of a rubber composition laminated over said film, and is characterized in that the rubber composition contains at least one type of rubber component, a condensate of formaldehyde and the compound represented by formula (1) (R1 to R5 in the formula are defined in the specification), at least one type of methylene donor and a vulcanizing agent, and in that there are 0.5-20 parts by mass of the condensate per total 100 parts by mass of the at least one type of rubber component, there are 0.25-200 parts by mass of the at least one type of methylene donor per total 100 parts by mass of the at least one type of rubber component, the mass ratio of the at least one type of methylene donor and the condensate is 0.

Abstract: Methods of preparing a second high-efficiency, rhenium-promoted silver catalyst for producing alkylene oxide from an alkylene based on a first catalyst are disclosed and described. In accordance with the disclosed methods, the first and second catalysts include at least one promoter that includes a rhenium promoter. The target catalyst concentrations of one or more promoters of the at least one promoter on the second catalyst are determined based on the values of a catalyst reference property for the two catalysts and the concentration of the one or more promoters of the at least one promoter on the first catalyst. Suitable catalyst reference properties include carrier specific surface area and silver specific surface area. Reaction systems utilizing the first and second catalysts are also described.

Abstract: In a pneumatic tire production method including a step of overlapping end portions of a sheet laminate and vulcanization-molding the tire, the sheet laminate being obtained by layering an elastomer layer and a sheet of a thermoplastic resin composition containing a thermoplastic resin or a blend of a thermoplastic resin and an elastomer, after the end portions of the sheet laminate are overlapped, the overlapped portion of the sheet laminate is compression-bonded at a temperature of not less than a glass transition temperature Tg of the thermoplastic resin and not greater than 120° C.