Abstract: The present invention provides a composition for a solar cell sealing film prepared by mixing an ethylene-?-olefin copolymer a metallocene catalyst (m-LLDPE) and another polymer as resin components, wherein the composition has the same processability as a composition containing m-LLDPE alone as a resin component and provides a solar cell sealing film having the same transparency as the composition containing m-LLDPE alone as resin component. A composition for a solar cell sealing film comprising m-LLDPE and low-density polyethylene (LDPE), wherein the weight average molecular weight of m-LLDPE (Mw(m-LLDPE)) is 200,000 or less, the weight average molecular weight of LDPE (Mw(LDPE)) is 250,000 or less, and the mass ratio of m-LLDPE to LDPE (m-LLDPE:LDPE) is in a range of 80:20 to 30:70, and a solar cell sealing film prepared using the same.

Abstract: The present invention provides a composition for a solar cell sealing film prepared by mixing an ethylene-?-olefin copolymer (m-LLDPE) polymerized using a metallocene catalyst and other polymers as resin components, wherein the composition has the same processability as a composition containing m-LLDPE alone and provides a solar cell sealing film having the same transparency as the case where m-LLDPE is used alone. A composition for a solar cell sealing film comprising m-LLDPE and low-density polyethylene (LDPE), wherein the weight average molecular weight of m-LLDPE (Mw(m-LLDPE)) is 200,000 or less, the weight average molecular weight of LDPE (Mw(LDPE)) is 250,000 or less, and the mass ratio of m-LLDPE to LDPE (m-LLDPE:LDPE) is in a range of 80:20 to 30:70, and a solar cell sealing film prepared using the same.

Abstract: The present invention provides a solar cell sealing film whereby generation of gas is decreased. The solar cell sealing film comprises a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7, the content of the organic peroxide is 0.1 to 1.0 parts by mass based on 100 parts by mass of the resin mixture, and the gel rate after crosslinking is 20 to 80% by mass.

Abstract: The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13A, 13B comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7 and the melting point of the resin mixture (temperature at a viscosity of 30,000 Pa·s) is 80 to 105° C.

Abstract: Method for manufacturing a solar cell module in which a light-receiving side sealing film 13A and a backside sealing film 13B are each formed of a different resin composition from each other selected from a resin composition A and a resin composition B, both of the sealing films are heated when the pressurizing is initiated so as to reach to a minimum temperature X° C. and a maximum temperature Y° C., the resin composition A has a viscosity of 5.0×104 Pa·s or less at the temperature X° C., and the resin composition B has a viscosity of 7.0×104 Pa·s or less at the temperature X° C. and has a viscosity of 2.0×104 Pa·s or more at the temperature Y° C.

Abstract: To provide a sealing film for a solar cell, which can be effectively formed and is capable of preventing wraparound even if heating is performed in a wide temperature range when members of the solar cell module are integrated. A pair of sealing films 13A and 13B for a solar cell including a light-receiving side sealing film 13A formed from a resin composition A; and a colored backside sealing film 13B formed from a resin composition B, wherein a temperature at which the resin composition B has a viscosity of 50,000 Pa·s is 95° C. or lower, and the resin composition B has a viscosity higher than that of the resin composition A at 80° C. and 100° C.

Abstract: There is provided a cured sheet and a laminate having the same, wherein the cured sheet is prepared by curing a laminate forming sheet containing an ethylene-vinyl acetate copolymer and a polyethylene, excellent in adhesion durability and has a sufficient flexibility even in the case of a high content of the polyethylene. A cured sheet constituting a laminate and a laminate having the same, wherein the cured sheet is prepared by curing through cross-linking a laminate forming sheet comprising a composition containing an ethylene-vinyl acetate copolymer, a polyethylene and an organic peroxide; a weight ratio of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) (EVA:PE) is in a range of 3:7 to 8:2; and the cured sheet has a sea-island structure wherein the ethylene-vinyl acetate copolymer constitutes a sea phase and the polyethylene constitutes an island phase.

Abstract: To provide a composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and a polyethylene resin, by which the above-described problems in the width of the temperature range in which a processable viscosity range is obtained and the like are improved and which excels in processing properties such as a film-forming property when producing a sheet, and a sheet for forming a laminate using this. A composition for producing a sheet for forming a laminate, which contains an ethylene-vinyl acetate copolymer and polyethylene, wherein the composition has a sea-island structure in which the ethylene-vinyl acetate copolymer is a sea phase and the polyethylene is an island phase, and a sheet for forming a laminate using this.

Abstract: The present invention provides a solar cell sealing film in which the shrinkage is prevented when heated. The solar cell sealing film 13A, 13B comprises a resin mixture of an ethylene-vinyl acetate copolymer and polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7 and the melting point of the resin mixture (temperature at a viscosity of 30,000 Pa·s) is 80 to 105° C.

Abstract: A photo-curable transfer sheet having a photo-curable transfer layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group, wherein the photo-curable transfer layer shows linearity in relationship between strain [?] (%) and time [t] (second) measured by a creep test using a dynamic viscoelasticity measuring apparatus under the conditions of an ordinary temperature, stress of 50 Pa and a time period of 120 seconds, and satisfies a following formula: log ?=a+b·log t, in which “a” is a real number, and “b” is in the range of 0.10 to 0.53; and a process for the preparation of an optical information recording medium using the sheet and an optical information recording medium.

Abstract: The present invention provides a solar cell sealing film whereby generation of gas is decreased. The solar cell sealing film comprises a resin mixture of an ethylene-vinyl acetate copolymer and a polyethylene, and an organic peroxide. The mass ratio (EVA:PE) of the ethylene-vinyl acetate copolymer (EVA) to the polyethylene (PE) is 8:2 to 3:7, the content of the organic peroxide is 0.1 to 1.0 parts by mass based on 100 parts by mass of the resin mixture, and the gel rate after crosslinking is 20 to 80% by mass.

Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium (e.g., DVD) having small thickness and high capacity can be advantageously prepared, and which is improved in transferring property of pits and the like and curing property. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer having a glass transition temperature of not less than 80° C. and a reactive diluent having a photopolymerizable functional group. The invention also provides a process for the preparation of an optical information recording medium using the sheet, and the optical information recording medium.

Abstract: The present invention is to provide a photo-curable transfer sheet suitable for the preparation of an intermediate stamper in a nanoimprint method, in which the mold release properties from a mold having a fine concave-convex pattern used in the preparation of the intermediate stamper and the mold release properties of a cured photo-curable resin that is a product having a fine concave-convex pattern transferred from the intermediate stamper are excellent, and the transfer property of the fine concave-convex pattern is good; and a method for forming a concave-convex pattern by using the above-mentioned photo-curable transfer sheet. The photo-curable transfer sheet 10 having a photo-curable transfer layer 11 comprising a photo-curable composition deformable by application of pressure which comprises a polymer and a reactive diluent having a photopolymerizable functional group, wherein the polymer is an acrylic resin comprising a recurring unit derived from (meth)acrylate having an alicyclic group.

Abstract: The present invention is to provide a photo-curable transfer sheet suitable for the preparation of an intermediate stamper in a nanoimprint method, in which the peeling property from a mold having a fine concave-convex pattern used in the preparation of the intermediate stamper and the peeling property of a cured photo-curable resin that is a product having a fine concave-convex pattern transferred from the intermediate stamper are excellent, and the adhesion to a base film is good; and a method for forming a concave-convex pattern by using the above-mentioned photo-curable transfer sheet.

Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium having small thickness and high capacity can be advantageously prepared, the photo-curable transfer layer of the sheet cured in the production of the optical information recording medium having excellent adhesion to the reflective layer such silver alloy and easy peeling property from the stamper to easily bring about the transfer layer having an uneven surface such as pits, etc accurately formed along an uneven surface of the stamper. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer and a reactive diluent having a photopolymerizable functional group, and the reactive diluent has at least one hydroxyl group and an acryloyl group and/or methacryloyl group, the total of acryloyl group and/or methacryloyl group being at least two.

Abstract: The present invention provides a method for forming concave-convex pattern corresponding to a nanoimprint method which is advantageously utilized in the preparation of electronic devices, optical parts and recording media, and enabling the preparation of the product having the fine pattern mentioned above in cheapness and high speed.

Abstract: A photo-curable transfer sheet having a photo-curable layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group. The photo-curable transfer sheet preferably has a light transmittance of not less than 70% in a wavelength rang of 380 to 420 nm. An optical information recording substrate and medium prepared by the sheet. The sheet easily and precisely enables transfer of unevenness of the surface of a stamper by pressing.

Abstract: The present invention provides a photo-curable transfer sheet by which an optical information recording medium (e.g., DVD) having small thickness and high capacity can be advantageously prepared, and which is improved in transferring property of pits and the like and curing property. The photo-curable transfer sheet has a photo-curable transfer layer comprising a photo-curable composition deformable by application of pressure, wherein the photo-curable composition comprises a polymer having a glass transition temperature of not less than 80° C. and a reactive diluent having a photopolymerizable functional group. The invention also provides a process for the preparation of an optical information recording medium using the sheet, and the optical information recording medium.

Abstract: A photo-curable transfer sheet having a photo-curable transfer layer comprising a photo-curable composition, the photo-curable composition being deformable by application of pressure and containing a reactive polymer having a photopolymerizable functional group, wherein the photo-curable transfer layer shows linearity in relationship between strain [?] (%) and time [t] (second) measured by a creep test using a dynamic viscoelasticity measuring apparatus under the conditions of an ordinary temperature, stress of 50 Pa and a time period of 120 seconds, and satisfies a following formula: log ?=a+b·log t, in which “a” is a real number, and “b” is in the range of 0.10 to 0.53; and a process for the preparation of an optical information recording medium using the sheet and an optical information recording medium.

Abstract: A process for the preparation of an optical information recording medium comprises superposing two optical information recording substrates having an uneven surface of recorded pits and/or grooves on each other through a photo-curable adhesive sheet comprising a photo-curable composition which comprises a reactive polymer having a photopolymerizable functional group and Tg of not more than 20° C., the photo-curable adhesive sheet having a light transmittance of not less than 70% in a wavelength range of 380 to 420 nm, such that the two uneven surfaces face each other, depressing the substrates and sheet to form a laminate, and curing the laminate by light. A process for the preparation of an optical information recording medium comprises placing a photo-curable transfer sheet comprising a photo-curable composition which comprises a reactive polymer having a photopolymerizable functional group and Tg of not more than 20° C.