An energy storage device comprises two electrodes; and a separator disposed between the electrodes; wherein at least one of the electrodes and the separator comprises a copolymer, which serves as a non-aqueous binder and/or solid electrolyte for the electrodes and the separator of the energy storage device, and the copolymer is a copolymerized product or its derivative formed by the polymerization reaction of acrylonitrile and vinyl acetate. Therefore, the charge and discharge properties of the energy storage device using the copolymer can be improved, thereby effectively extending the efficiency and lifetime of the energy storage device.

An energy storage device includes an anode, a cathode, and a separator disposed between the anode and the cathode. At least one of the anode, cathode and separator includes a copolymer functioning as a non-aqueous adhesive and/or solid-state electrolyte for the energy storage device. The copolymer is a copolymer or a derivative thereof, which is produced by polymerization of monomers containing conductive ion group and/or olefinic monomers in the presence of 2-propenenitrile. Therefore, the energy storage device which the copolymer is used therein has excellent charging and discharging performance to therefore effectively enhance the efficiency and extend the service life of the energy storage device.

An energy storage device includes an anode, a cathode, and a separator disposed between the anode and the cathode. At least one of the anode, cathode and separator includes a copolymer functioning as a non-aqueous adhesive and/or solid-state electrolyte for the energy storage device. The copolymer is a copolymer or a derivative thereof, which is produced by polymerization of monomers containing conductive ion group and/or olefinic monomers in the presence of 2-propenenitrile. Therefore, the energy storage device which the copolymer is used therein has excellent charging and discharging performance to therefore effectively enhance the efficiency and extend the service life of the energy storage device.

The present invention provides a nitrile group-containing highly-saturated copolymer rubber comprising an ,-ethylenically unsaturated nitrile monomer unit (a) in a content of 28 wt % or more and a conjugated diene monomer unit (b) in a content of 20 to 72 wt %, and having an iodine value of 120 or less, wherein the conjugated diene monomer unit (b) is at least partially hydrogenated, and a proportion of an isoprene unit in the conjugated diene monomer unit (b) is 33 wt % or more.

The present invention provides a nitrile group-containing highly-saturated copolymer rubber comprising an ,-ethylenically unsaturated nitrile monomer unit (a) in a content of 28 wt % or more and a conjugated diene monomer unit (b) in a content of 20 to 72 wt %, and having an iodine value of 120 or less, wherein the conjugated diene monomer unit (b) is at least partially hydrogenated, and a proportion of an isoprene unit in the conjugated diene monomer unit (b) is 33 wt % or more.

The present invention provides a nitrile group-containing highly-saturated copolymer rubber comprising an ,-ethylenically unsaturated nitrile monomer unit (a) in a content of 28 wt % or more and a conjugated diene monomer unit (b) in a content of 20 to 72 wt %, and having an iodine value of 120 or less, wherein the conjugated diene monomer unit (b) is at least partially hydrogenated, and a proportion of an isoprene unit in the conjugated diene monomer unit (b) is 33 wt % or more.

A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z.sup.1 represent divalent linking groups, A and A.sup.1 represent divalent cyclic groups, and X.sup.1 to X.sup.5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X.sup.1, X.sup.2, X.sup.4 and X.sup.5 are not simultaneously hydrogen atoms. ##STR00001##

A compound and a polymer which can each form a photo-alignment film having excellent ability of controlling alignment, a photo-alignment film obtained using the polymer and an optically anisotropic body and a liquid crystal display element each having the photo-alignment film are provided. A compound represented by the general formula (1). In the formula, P represents a polymerizable group, Z and Z.sup.1 represent divalent linking groups, A and A.sup.1 represent divalent cyclic groups, and X.sup.1 to X.sup.5 each independently represent a hydrogen atom, a fluorine atom, a chlorine atom, a hydroxy group, a nitro group, a cyano group or an alkyl group having 1 to 40 carbon atoms which may have a substituent, provided that X.sup.1, X.sup.2, X.sup.4 and X.sup.5 are not simultaneously hydrogen atoms. ##STR00001##

A transfer sheet includes a cured liquid crystal composition layer, a block layer including a (meth)acrylic polymer, and a thermoplastic welded layer in this order, the thermoplastic welded layer and the block layer are in direct contact with each other, and the thermoplastic welded layer includes a thermoplastic resin and an ultraviolet curable resin.

A transfer sheet includes a cured liquid crystal composition layer, a block layer including a (meth)acrylic polymer, and a thermoplastic welded layer in this order, the thermoplastic welded layer and the block layer are in direct contact with each other, and the thermoplastic welded layer includes a thermoplastic resin and an ultraviolet curable resin.