| abstract |
The object of this invention is to provide and stick excellent and preferably more excellent in the weathering resistance Outdoor urethane adhesive agent of the flexibility of agent film in initial adhesion, solidification postadhesion power and cured glue; By using the obtainable solar cell backboard of described sizing agent; The obtainable solar module of described solar cell backboard is used with passing through.The invention provides a kind of Outdoor urethane adhesive agent (A), it comprises: react obtainable urethane resin (A) by isocyanate compound (a1) and the polyvalent alcohol (a2) with ester bond, wherein isocyanate compound (a1) comprises at least one be selected from aliphatic isocyanates and alicyclic isocyanate, and polyvalent alcohol (a2) not only comprises polyester polyol (a2-1) but also comprise acryl polyol (a2-2), described Outdoor urethane adhesive agent is at initial adhesion, the flexibility that solidification postadhesion power and cured glue stick agent film is excellent.When this Outdoor urethane adhesive agent also comprises the compound based on hydroxyphenyl-triazine, described sizing agent causes the change of aberration and more excellent in weathering resistance hardly. |