Patent ID: 8652642
Filing Date: 2014-02-18
Classification: B32B,C08G,C08J,C09D,H01L,Y02E,Y10T

Abstract:
1. A biaxially oriented polyester film in the form of a laminated film comprising; a biaxially oriented polyester base film having a phosphorus element content of 0 to 170 ppm and a terminal carboxylic acid content of not more than 26 equivalents/t, and a coating layer formed on at least one surface of the biaxially oriented polyester base film which comprises a polyurethane having a polycarbonate skeleton or a polyether skeleton and a crosslinking agent, wherein the laminated film has a haze value of not more than 10%, wherein the coating layer comprises no polyester-based. resin and polyester polyurethane resin, or the coating layer comprises a polyester-based. resin and polyester polyurethane resin in the amount of less than 10% by weight based on the weight of coating layer, the laminated film further comprising a solar cell sealing resin layer directly laminated on the coating layer, which solar cell sealing resin layer comprises at least one member selected from the group consisting of ethyiene-vinyl acetate copolymer, polyvinyl butyral, ethylene-methyl acrylate copolymers, ethylene-ethyl acrylate copolymers and ethylene-α-olefin copolymers.