Block copolymer hydride having alkoxysilyl group and use thereof

摘要

The present invention comprises at least two polymer blocks [A] mainly comprising an aromatic vinyl compound unit and at least one polymer block [B] mainly comprising a chain conjugated diene compound unit. , 90 of the total unsaturated bonds of the block copolymer having wA: wB of 20:80 to 60:40, where wA and wB are the weight fractions of the polymer blocks [A] and [B], respectively. % Of a hydrogenated block copolymer obtained by hydrogenating a block copolymer obtained by hydrogenating an alkoxysilyl group; a modified block copolymer hydride having an alkoxysilyl group; a production method thereof; a solar cell element encapsulant; a sheet Laminated sheet; multilayer sheet; method for sealing solar cell elements. The hydride of the modified block copolymer of the present invention has low hygroscopicity, non-hydrolysis property, weather resistance, transparency and flexibility, and is excellent in that it can be used with glass even after being exposed to a high temperature and high humidity environment for a long time. A strong adhesive force can be maintained, and the solar cell element can be sealed without performing a special water shielding treatment.