Abstract: Provided are an energy ray-crosslinkable pressure sensitive adhesive composition, a pressure sensitive adhesive sheet containing the composition, a crosslinked pressure sensitive adhesive obtained by crosslinking the composition using an energy ray, a method for producing the crosslinked pressure sensitive adhesive, a pressure sensitive adhesive sheet containing the crosslinked pressure sensitive adhesive, and a method for producing the pressure sensitive adhesive sheet. The energy ray-crosslinkable pressure sensitive adhesive composition contains: (A) a block copolymer of an aromatic vinyl compound and a diene compound, the block copolymer containing a vinyl group in a side chain; (B) a tackifier having a softening point of 80° C. or higher and 150° C. or lower; and (C) a photopolymerization initiator.

Abstract: Provided are a conductive structure having low contact resistance, the conductive structure including a cured layer formed by curing a curable composition, a conductive linear body fixed by the cured layer, and a pair of electrodes placed so as to directly contact the conductive linear body, wherein the curable composition contains a cationic polymerizable compound and a photocationic polymerization initiator, and the cured layer fixes the electrodes; a manufacturing method for the conductive structure; and article including the conductive structure; and a manufacturing method for the article.

Abstract: Disclosed is an adhesive composition having components (A), (B) and (C): Component (A): modified polyolefin-based resin, Component (B): polyfunctional epoxy compound, and Component (C): imidazole-based curing catalyst. Also provided is a sealing sheet composed of two release films and an adhesive layer sandwiched between the release films, wherein the adhesive layer is made by using the adhesive composition and has a thermosetting property. Also disclosed is a sealed body obtained by sealing a seal subject with the sealing sheet. The adhesive composition has excellent adhesion strength, a sealing sheet made by using the adhesive composition and having an adhesive layer is excellent in sealing performance, and a sealed body obtained by sealing a seal subject with the sealing sheet.

Abstract: Provided is an adhesive composition containing component (A) (a modified polyolefin-based resin) and component (B) (a polyfunctional epoxy compound), wherein as a result of measuring a storage elastic modulus of a solid content, a storage elastic modulus at 23° C. is 0.1 to 600 MPa, and a storage elastic modulus at 80° C. is 0.1 MPa or lower. Also provided are: a sealing sheet having an adhesive layer formed using the adhesive composition, and a sealed body comprising a seal object that is sealed with the sealing sheet. The adhesive composition is easy to form into a sheet and excellent in unevenness followability. The sealing sheet has an adhesive layer which is formed of this adhesive composition and is excellent in unevenness followability, and a sealed body has a seal object sealed with the sealing sheet.

Abstract: The present invention is: a curable composition for forming a primer layer of a gas barrier laminated film, comprising at least a polar group-containing polyolefin polymer and a polyfunctional acrylate compound; a gas barrier laminated film having a primer layer made of a cured product of the curable composition; and a gas barrier laminate including an organic compound-containing layer laminated on the surface of the gas barrier laminated film. The present invention provides: a curable composition that is for forming a primer layer suitably used in manufacturing a gas barrier laminate excellent in interlayer adhesion, a gas barrier laminated film having a primer layer made of the cured product of the curable composition, and a gas barrier laminate comprising an organic compound-containing layer laminated on the surface of the gas barrier laminated film.

Abstract: The present invention relates to: a gas-barrier laminated sheet having a layer structure of release sheet (A)/gas-barrier layer/adhesive resin layer/release sheet (B), wherein arithmetic average roughness (Ra) of a surface on the release sheet (A) side of the gas-barrier layer is 5 nm or less, and maximum cross-section height (Rt) of the surface is 100 nm or less; a process for producing the gas-barrier laminated sheet; and an electronic member or an optical member, including a gas-barrier layer and an adhesive resin layer derived from the gas-barrier laminated sheet. The present invention provides: a gas-barrier laminated sheet excellent in sealing performance and bending properties and a process for producing the same, and an electronic member and an optical member including a gas-barrier layer and an adhesive resin layer derived from the gas-barrier laminated sheet.

Abstract: Provided is an adhesive composition containing the following components (A) and (B), wherein as a result of measuring a storage elastic modulus of a solid content, a storage elastic modulus at 23° C. is 0.1 to 600 MPa, and a storage elastic modulus at 80° C. is 0.1 MPa or lower: Component (A): modified polyolefin-based resin Component (B): polyfunctional epoxy compound. Also provided are: a sealing sheet having an adhesive layer formed using the adhesive composition, and a sealed body comprising a seal object that is sealed with the sealing sheet. An aspect of the present invention provides an adhesive composition which is easy to form into a sheet and excellent in unevenness followability, a sealing sheet having an adhesive layer which is formed of this adhesive composition and excellent in unevenness followability, and a sealed body having a seal object sealed with the sealing sheet.

Abstract: The present invention is: a curable composition for forming a primer layer of a gas barrier laminated film, comprising at least a polar group-containing polyolefin polymer and a polyfunctional acrylate compound; a gas barrier laminated film having a primer layer made of a cured product of the curable composition; and a gas barrier laminate including an organic compound-containing layer laminated on the surface of the gas barrier laminated film. The present invention provides: a curable composition that is for forming a primer layer suitably used in manufacturing a gas barrier laminate excellent in interlayer adhesion, a gas barrier laminated film having a primer layer made of the cured product of the curable composition, and a gas barrier laminate comprising an organic compound-containing layer laminated on the surface of the gas barrier laminated film.

Abstract: The invention is an adhesive composition comprising a modified polyolefin-based resin in an amount of 45 mass % or more based on a total solid content of the adhesive composition and satisfying the specific following equation (I): ?1/?1?0.20??(I) [?1 represents a 180° peel adhesion strength (N/25 mm) as measured using the following measurement sample (A) under an environment at 85° C. in accordance with JIS Z0237: 2009, and ?1 represents a water vapor permeability (g·m?2·day?1) as measured using the following measurement sample (B) under a condition at 40° C. and a relative humidity of 90%]. One aspect of the invention provides an adhesive composition capable of obtaining a sealant excellent in sealing performance, a sealing sheet having an adhesive layer made by using the adhesive composition, and a sealed body obtained by sealing a seal subject with the sealing sheet.

Abstract: The invention is an adhesive composition comprising the following components (A), (B) and (C): Component (A): modified polyolefin-based resin, Component (B): polyfunctional epoxy compound, and Component (C): imidazole-based curing catalyst, and a sealing sheet composed of two release films and an adhesive layer sandwiched between the release films, wherein the adhesive layer is made by using the adhesive composition according to claim 1 and has thermosetting property, and a sealed body obtained by sealing a seal subject with the sealing sheet. One aspect of the invention provides an adhesive composition excellent in adhesion strength, a sealing sheet made by using the adhesive composition and having an adhesive layer excellent in sealing performance, and a sealed body obtained by sealing a seal subject with the sealing sheet.

Abstract: The present invention provides: an adhesive composition comprising a diene-based rubber (A) that includes a radiation-curable functional group, a cured adhesive layer having a thickness of 60 ?m that is formed by curing the adhesive composition having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 30 g/(m2·day) or less; an adhesive sheet comprising a curable adhesive layer that is formed using the adhesive composition; and an electronic device comprising a sealing material, the sealing material being formed using the adhesive composition.

Abstract: The present invention provides: an adhesive composition for sealing an electronic device, the adhesive composition comprising an isobutylene-isoprene copolymer as a main component, the isobutylene-isoprene copolymer having a content of repeating units derived from isoprene of 0.1 to 99 mol % based on total repeating units; an adhesive sheet comprising a gas barrier film, and an adhesive layer that is formed on the gas barrier film, the gas barrier film having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 0.1 g/m2/day or less, and having a total light transmittance of 80% or more, and the adhesive layer comprising an adhesive composition that comprises an isobutylene-isoprene copolymer as a main component; and an electronic device or the like in which the adhesive composition and the adhesive sheet are used as a sealant for an organic electroluminescent element or the like.

Abstract: The present invention is a sealing material composition comprising a moisture absorbent, and a sealing resin having a weight average molecular weight of 50,000 to 1,000,000, the moisture absorbent comprising a compound that comprises a repeating unit represented by a formula (1), and a sealing sheet, and an electronic device member, and an electronic device. The sealing material composition according to the present invention makes it possible to easily produce a sealing sheet that exhibits excellent transparency, an excellent water vapor barrier capability, and high adhesion, and the sealing sheet according to the present invention exhibits excellent transparency, an excellent water vapor barrier capability, and high adhesion, and may suitably be used to seal an organic EL device and the like, and the electronic device member and the electronic device according to the present invention rarely deteriorate, and exhibit excellent long-term reliability.

Abstract: The present invention is an adhesive composition including a Polyisobutylene-based resin (A), an energy ray-curable resin (B), and a tackifier (C), the energy ray-curable resin (B) including a difunctional acrylate that includes a divalent alicyclic hydrocarbon group, the adhesive composition including the energy ray-curable resin (B) in a ratio of 5 to 59 parts by mass based on 100 parts by mass of the Polyisobutylene-based resin (A), and including the tackifier (C) in a ratio of 0.1 to 40 parts by mass based on 100 parts by mass of the Polyisobutylene-based resin (A); and an adhesive sheet including a release sheet, and an adhesive layer that is formed on the release sheet, the adhesive layer being formed using the adhesive composition; and an electronic device including a transparent substrate, a device, and a sealing material, the sealing material being formed using the adhesive composition.

Abstract: The present invention is a sheet-like sealing material comprising one sealing resin layer, or two or more sealing resin layers, the sheet-like sealing material having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 20 g/(m2·day) or less when the sheet-like sealing material has a thickness of 50 ?m, having a b* value in a CIE L*a*b* color system defined by JIS Z 8729-1994 of ?2 to 2%, having a light transmittance at a wavelength of 370 nm of 1% or less, and having a light transmittance at a wavelength of 420 nm of 85% or more; and a sealing sheet comprising the sheet-like sealing material that comprises one sealing resin layer, or two or more sealing resin layers, and a gas barrier layer; and an electronic device that is sealed with the sheet-like sealing material or the sealing sheet.

Abstract: The present invention provides: an adhesive composition comprising a diene-based rubber (A) that includes a radiation-curable functional group, a cured adhesive layer having a thickness of 60 ?m that is formed by curing the adhesive composition having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 30 g/(m2·day) or less; an adhesive sheet comprising a curable adhesive layer that is formed using the adhesive composition; and an electronic device comprising a sealing material, the sealing material being formed using the adhesive composition.

Abstract: The present invention provides: an adhesive composition comprising an isobutylene-based polymer (A), a diene-based rubber (B) that includes a hydroxyl group, and a crosslinking agent (C); an adhesive sheet comprising an adhesive layer that is formed using the adhesive composition; and an electronic device comprising a sealing material, the sealing material being formed using the adhesive composition, or the adhesive. According the present invention, provided are; an adhesive composition that is useful as a material for forming an adhesive layer that exhibits an excellent water barrier capability, and exhibits adhesion and holding power in a well-balanced manner; an adhesive sheet that includes an adhesive layer that is formed using the adhesive composition; and an electronic device that includes a sealing material that is formed using the adhesive composition.

Abstract: The present invention provides: an adhesive composition for sealing an electronic device, the adhesive composition comprising an isobutylene-isoprene copolymer as a main component, the isobutylene-isoprene copolymer having a content of repeating units derived from isoprene of 0.1 to 99 mol % based on total repeating units; an adhesive sheet comprising a gas barrier film, and an adhesive layer that is formed on the gas barrier film, the gas barrier film having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 0.1 g/m2/day or less, and having a total light transmittance of 80% or more, and the adhesive layer comprising an adhesive composition that comprises an isobutylene-isoprene copolymer as a main component; and an electronic device or the like in which the adhesive composition and the adhesive sheet are used as a sealant for an organic electroluminescent element or the like.

Abstract: The present invention provides an adhesive composition comprising a diene-based rubber (A) that includes a carboxylic acid-based functional group, and a crosslinking agent (B), an adhesive layer having a thickness of 60 ?m that is obtained by crosslinking the adhesive composition having a water vapor transmission rate at a temperature of 40° C. and a relative humidity of 90% of 60 g/(m2·day) or less; an adhesive sheet comprising an adhesive layer that is formed using the adhesive composition; and an electronic device comprising a sealing material, the sealing material being formed using the adhesive composition, or the adhesive sheet.

Abstract: A pressure-sensitive adhesive sheet having a pressure-sensitive adhesive layer formed from a pressure-sensitive adhesive composition containing a polyisobutylene-based resin (A) having a mass-average molecular weight of 20000 or more, a styrene-based copolymer (B), and a tackifier (C) having a softening point of 135° C. or less, wherein the component (B) is one or more selected from the group consisting of a styrene-butadiene-styrene triblock copolymer (SBS), a styrene-block-(ethylene-co-butylene)-block-styrene triblock copolymer (SEBS), a styrene-isobutylene diblock copolymer (SIB), and a styrene-isobutylene-styrene triblock copolymer (SIBS), has excellent adhesive force, excels in a suppressing effect on moisture intrusion, and has good transparency.