TECHNOLOGY FOCUS - ORGANIC CHEMISTRY - Preferred Compounds: The coating composition further contains acetylene diol or adduct of ethylene oxide and acetylene diol, inorganic filler type anti-blocking agent or fatty-acid amide type slipping agent, and solvent. Preferred Properties: The content of solvent in the coating composition is 0.5-10 g/m2. The coating composition has viscosity of 50-500 mPa.second. The coating composition is in the form of dry film. The shape of surface of coating film is in dot form and stripe form.    TECHNOLOGY FOCUS - POLYMERS - Preferred Layers: The easy-to-adhere coat layer is provided in an untreated polyester base material (3a). The solar cell rear surface sealing sheet further comprises multilayered structure of polyester layer(s) comprising material same as that of polyester base material, multilayered structure of barrier base material(s) with inorganic compound vapor deposition layer, and multilayered structure of base material layer(s) which have weather resistance. Preferred Component: The water dispersing ionomer-type polyurethane resin comprises water dispersing ionomer-type polyurethane resin (A) and water dispersing ionomer-type polyurethane resin (B). The polyacrylic acid or its derivatives is sodium salt or ammonium salt of polyacrylic acid. The base material layer which has weather resistance, contains polyester base material chosen from polyethylene terephthalate, polyethylene naphthalate, polybutylene terephthalate and polycyclohexane dimethanol terephthalate, polycarbonate-type base material, and fluorine-type base material chosen from acrylic modified component of polyvinyl fluoride, polyvinylidene fluoride, polychloro trifluoroethylene resin, polyethylene tetrafluoroethylene, polytetrafluoroethylene, tetrafluoroethylene perfluoro-alkyl vinyl ether copolymer and tetrafluoroethylene-hexafluoropropylene copolymer. Preferred Properties: The water dispersing ionomer-type polyurethane resin has glass transition temperature of 50 degrees C or less. The water dispersing ionomer-type polyurethane resin (A) has glass transition temperature of 50 degrees C or less. The water dispersing ionomer-type polyurethane resin (B) has glass transition temperature of 50-80 degrees C. The mass ratio of water dispersing ionomer-type polyurethane resin (A) and water dispersing ionomer-type polyurethane resin (B) is 50/50-99/1. The base material layer which has weather resistance, has number average molecular weight of 18000-40000, cyclic oligomer content of 15 weight% or less and intrinsic viscosity of 0.5 dl/g or more.