Patent ID: 8748525
Filing Date: 2014-06-10
Classification: C08J,C09K

Abstract:
1. A polyester film, comprising: a first polyester having a glass transition temperature (Tg) higher than 140° C. and an intrinsic viscosity (I.V.) of about 0.5-1.0 dl/g, and having a repeating unit expressed by formula (I): wherein R 1 ′ is a group selected from and R 1 is a group selected from and a second polyester having a glass transition temperature (Tg) lower than 140° C. and an intrinsic viscosity (I.V.) of 0.5-1.0 dl/g, the second polyester is selected from the group consisting of polyethylene terephthalate (PET), polyethylene terephthalate glycol (PETG), polyethylene naphthalate (PEN), poly(ethylene-co-tricyclodecanedimethylene naphthalate), poly(ethylene-co-3,9-bis(1,1-dimethyl-2-hydroxyethyl)-2,4,8,10-tetraoxa-spiro [5,5]undecane terephthalate, and a combination thereof, wherein a weight ratio of the first polyester to the second polyester ranges from 1:1 to 1:3.