公开(公告)号：US20150252178A1

公开(公告)日：2015-09-10

申请号：US14633868

申请日：2015-02-27

Applicant: FUJIFILM Corporation

Inventor： Nobutaka FUKAGAWA ,  Yu NAITO ,  Mayumi NOJIRI ,  Hiroyuki HAGIO ,  Aiko YOSHIDA ,  Hideyuki NISHIKAWA

IPC: C08L1/12 ,  G02F1/1335

CPC classification number: C08L1/12 ,  B32B2457/202 ,  C08J5/18 ,  C08J2301/12 ,  C08K5/0008 ,  C08K5/16 ,  G02F1/133528 ,  Y10T428/105 ,  Y10T428/31971 ,  C08L67/00

Abstract: A cellulose acylate film, containing: at least two or more of chelating agents having different pKa values from one another, wherein the chelating agents comprise: a chelating agent A having at least one functional group whose acid dissociation constant pKa, measured at 25° C. in a mixed solvent having a mixing ratio of tetrahydrofuran 60 ml/water 40 ml, is 6 or less; and a chelating agent B having at least one functional group of a conjugate acid whose pKa, measured at the same condition, is 7 or more; and a cellulose acylate, and wherein the number of bright spots of the cellulose acylate film is equal to or less than 500/cm2; a polarizing plate protective film, a polarizing plate and a liquid crystal display using the same.

Abstract translation: 一种纤维素酰化物膜，其包含：至少两种或更多种彼此具有不同pKa值的螯合剂，其中所述螯合剂包含：具有至少一个官能团的螯合剂A，其酸解离常数pKa在25℃下测定 在四氢呋喃60ml /水40ml的混合比例的混合溶剂中为6以下; 和具有至少一种共轭酸官能团的螯合剂B，其在相同条件下测定的pKa为7以上; 纤维素酰化物，纤维素酰化物膜的亮点数为500 / cm 2以下; 偏振片保护膜，偏振片和使用其的液晶显示器。