FIELD: chemistry.
SUBSTANCE: present invention relates to an adhesive for laminated sheets, a substrate for a solar battery and a solar battery module. Said adhesive contains a urethane resin obtained by mixing an acrylic polyol with an aliphatic isocyanate compound, and also has a chemical structure obtained from a diene polymer. Diene polymer has a glass transition temperature of -40 °C or lower and is a polydiene polyol having a terminal hydroxyl group and a vinyl group content of 75 mol. % or less. Acrylic polyol is obtained by polymerisation of hydroxyalkyl (meth) acrylate with another monomer including acrylonitrile and (meth)acrylic ester. Hydroxyl number of the acrylic polyol ranges from 0.5 to 45 mg KOH/g.
EFFECT: obtained adhesive for laminated sheets has excellent adhesion strength to film after curing and long-term resistance to hydrolysis at high temperature and high humidity during production of laminated sheet, and also has excellent adhesion properties at low temperature.
4 cl, 3 dwg, 4 tbl, 9 ex
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