| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a moistureproof and electric insulating multilayer protection sheet which is suitable for a protection sheet for a solar cell module and can be manufactured by melt extrusion molding. <P>SOLUTION: This electric insulating multilayer sheet is a ring-opened polymer hydride of 2-norbornene and a substituting group-containing norbornene-based monomer which is obtained by ring-opening polymerizing 2-norbornene and the substituting group-containing norbornene-based monomer such that the existence ratio of a repeating unit (a) derived from 2-norbornene to all the repeating units is 90-100 wt.% and the existence ratio of a repeating unit (b) derived from the substituting group-containing norbornene-based monomer to all the repeating units is 10-0 wt.%, and by hydrogenating 80% or more of main chain carbon-carbon double bonds in the obtained ring-opening polymer. In this electric insulating multi-layer sheet, a layer A composed of the ring-opening polymer hydride having a melting point is made as an intermediate layer, and a resin layer B of which light beam transmittance in the wavelength 250-365 nm is 50% or less per 100μm is arranged at both faces of the layer A. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
