(JP6021497-A)      A resin compsn. for sealing a solar battery comprises mainly thermosetting resin contg. acrylic gp. or an acrylic gp. contg. a substituent at its alpha- or beta-position and a thermoplastic resin comprising acrylic resin, having a higher number average mol. wt. than that of the thermosetting resin and soluble in the thermosetting resin.    Also claimed is a solar battery where such as sealing resin is used for sealing the photoelectric conversion surface or non-photoelectric conversion surface.    ADVANTAGE -   The solar battery has durably stable activity and performance.    (JP6021498-A)      A resin compsn. for sealing a solar battery comprises mainly thermosetting resin contg. acrylic gp. or an acrylic gp. contg. a substit. at the alpha- or beta-position and a thermoplastic resin comprising styrene-acrylate resin, having a higher number average mol. wt. than that of the thermosetting resin and soluble in the thermosetting resin. Also claimed is a solar battery where the sealing resin is used for sealing the photoelectric and/or non-photoelectric conversion surface.    The pref. solar battery is deteriorated by damage of the battery by incident UV rays, light and other electromagnetic wave damage of battery by stain and local destruction by rain and atmospheric humidity, degradation of the light transmission by the deposition of dust and fouling and local structural destruction by the collision of stone, dust, etc. against the surface. The acrylic resin contg. polymerisable acrylic gp. or acrylic gp. having a substd. at the alpha- or beta-position is e.g, (meth)acrylate ester, (meth)acrylate epoxy, (meth)acrylate urethane or (meth)acrylate melamine-oligomer or polymer. The thermoplastic resin is e.g, styrene-(meth)acrylate copolymer or styrene-(meth)acrylate-(meth)acrylic acid terpolymer. The dissolution of the thermoplastic resin into the thermosetting resin comprises stirring directly the resins or dissolving the resins in a organic solvent (eg., toluene, alcohol ketone or ester). The hardening comprises heating or irradiating light or electronic ray opt. in a thermopolymerisation initiator (e.g, alkyl peroxy-ester, dialkyl peroxide, peroxyketal or peroxy dicarbonate) or a photopolymerisation initiator and a polymerisation accelerator (e.g hexamethylene diacrylate or trimethylol propane triacrylate). The sealing of a photoelectric and/or non-conversion surface comprises immersing a solar battery in the soln. or coating the soln. on the surface by spraying, roller or electrostatic-coating and hardening the coated resin.    ADVANTAGE -   The solar battery has durable and stable activity and performance. The compsn. is used newly for forming a solar battery.    (JP6021499-A)      Resin compsn. comprises mainly thermosetting resin contg. acrylic gp. or an acrylic gp. contg. a substit. at its alpha- or beta-position and a thermoplastic resin comprising styrenic resin having a higher Mn than that of the thermosetting resin and soluble in the thermosetting resin.    Solar battery is deteriorated by damages of the battery by incident UV rays, light and other electromagnetic wave, damages of the battery by stain and local destruction by rain and atmospheric humidity, degradation of the light transmission by the deposition of dust and fouling and local structural destruction by the collision of stone, dust, etc. against its surface. Acrylic resin contains polymerisable arylic gp. or acrylic gp. having a substit. at its alpha- or beta-position is e.g, (meth)acrylate ester oligomer or polymer, (meth)acrylate epoxy oligomer or polymer, (meth)acrylate urethane oligomer or polymer or (meth)acrylate melamine oligomer or polymer. Thermoplastic resin is e.g, polystyrene homopolymer, styrene/butadiene copolymer, styrene/acrylonitrile copolymer or styrene/butadiene/acrylonitrile terpolymer. Dissolution of the thermoplastic resin into the thermosetting resin is carried out by stirring directly the resins or dissolving the resins in an organic solvent (e.g, toluene, alcohol, ketone or ester). Hardening is carried out by heating or irradiating light or electronic ray opt. in the presence of a thermopolymerisation initiator (e.g, alkyl peroxy-ester, dialkyl peroxide, peroxyketal or peroxydicarbonate) or a photopolymerisation initiator and a polymerisation accelerator (e.g, hexamethylene diacrylate or trimethylolpropane triacylate). The sealing of a photoelectric conversion surface and/or non-conversion surface is carried out by immersing a solar battery in the soln. or its surface by spraying, roller coating or electrostatic coating and hardening the coated resin.    ADVANTAGE -   Sealing resin is used for solar batteries and gives durable, stable activity and performance.    (JP6163963-A)      Compsn. comprises a hardening resin (1); and a thermoplastic resin (2). (2) has a Mn larger than (1), and is sol. in (1).    Pref. (1) and (2) have Mn of 3000 or less and 5000 or less, respectively. (1) is a polymer having an acrylic gp. opt. substd. at the alpha or beta position, and (2) is opt. a styrene acrylic, or styrene.acrylic polymer.    USE/ADVANTAGE -   Resin compsn. provides protection for the semiconductor appts. e.g. solar cell from external environmental conditions e.g. rain, UV rays, dust and moisture. Sealing procedure is simple, cheap and enables the solar cell to be operated stably for a long time while exhibiting good performance. Specifically, the resin compsns. imparts good heat, abrasion and H20 resistance, good electric insulating characteristics, satisfactory input resistance, adhesivity, flexibility and light transmissivity.    (US5397401-A)      Sealed semiconductor device comprises a sealing resin compsn. comprising a hardening resin and a thermoplastic resin having a larger Mn than that of the hardening resin. The resin compsn. is positioned on a (non) photoelectric conversion surface of the semiconductor device.    Pref. the Mn of the hardening resin is up to 3000. The Mn of the thermoplastic resin is at least 5000. The hardening resin is a polymer having an acrylic gp. opt. having a substit. at the alpha or beta position and the thermoplastic resin is an acrylic polymer or styrene acrylic polymer. The semiconductor appts. is a solar cell.    ADVANTAGE -   The amt. of sealing compsn. required is reduced and the semiconductor appts. is protected from rain, UV light, dust and moisture.    (JP2747172-B2)      Compsn. comprises a hardening resin (1); and a thermoplastic resin (2). (2) has a Mn larger than (1), and is sol. in (1).    Pref. (1) and (2) have Mn of 3000 or less and 5000 or less, respectively. (1) is a polymer having an acrylic gp. opt. substd. at the alpha or beta position, and (2) is opt. a styrene acrylic, or styrene.acrylic polymer.    USE/ADVANTAGE -   Resin compsn. provides protection for the semiconductor appts. e.g. solar cell from external environmental conditions e.g. rain, UV rays, dust and moisture. Sealing procedure is simple, cheap and enables the solar cell to be operated stably for a long time while exhibiting good performance. Specifically, the resin compsns. imparts good heat, abrasion and H20 resistance, good electric insulating characteristics, satisfactory input resistance, adhesivity, flexibility and light transmissivity.    (EP578091-B1)      Compsn. comprises a hardening resin (1); and a thermoplastic resin (2). (2) has a Mn larger than (1), and is sol. in (1).    Pref. (1) and (2) have Mn of 3000 or less and 5000 or less, respectively. (1) is a polymer having an acrylic gp. opt. substd. at the alpha or beta position, and (2) is opt. a styrene acrylic, or styrene.acrylic polymer.    USE/ADVANTAGE -   Resin compsn. provides protection for the semiconductor appts. e.g. solar cell from external environmental conditions e.g. rain, UV rays, dust and moisture. Sealing procedure is simple, cheap and enables the solar cell to be operated stably for a long time while exhibiting good performance. Specifically, the resin compsns. imparts good heat, abrasion and H20 resistance, good electric insulating characteristics, satisfactory input resistance, adhesivity, flexibility and light transmissivity.