Patent ID: 7749578
Filing Date: 2010-07-06
Classification: C08J,C08L,C09K,G02B,G02F,Y10T

Abstract:
1. A cellulose ester film comprising cellulose ester, polymer X having a weight average molecular weight of 2000-30000 prepared by copolymerizing ethylenic unsaturated monomer Xa containing no aromatic ring and no hydrophilic group within a molecule and ethylenic unsaturated monomer Xb containing no aromatic ring but a hydrophilic group within a molecule, and polymer Y having a weight average molecular weight of 500-3000 prepared by polymerizing ethylenic unsaturated monomer Ya containing no aromatic ring wherein the polymer X is expressed by following Formula (1), and the polymer Y is expressed by following Formula (2): where each of R