公开(公告)号：US20180258189A1

公开(公告)日：2018-09-13

申请号：US15974795

申请日：2018-05-09

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： CHARLES MICHAEL BUCHANAN ,  MICHAEL EUGENE DONELSON ,  ELIZABETH GUZMAN-MORALES ,  PETER BORDEN MACKENZIE ,  BIN WANG

IPC: C08B3/16 ,  C08J5/18 ,  G02B1/04 ,  C08L1/14 ,  C08B3/06 ,  C08B3/00 ,  G02F1/13363 ,  C08B3/08

CPC classification number: C08B3/16 ,  B32B2457/202 ,  C08B3/00 ,  C08B3/06 ,  C08B3/08 ,  C08J5/18 ,  C08J2301/14 ,  C08L1/14 ,  G02B1/04 ,  G02F1/13363 ,  G02F2001/133631 ,  Y10T428/10 ,  Y10T428/1036 ,  Y10T428/105

Abstract: Regioselectively substituted cellulose esters having a plurality of aryl-acyl substituents and a plurality of alkyl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in optical films, such as optical films having certain Nz values, −A optical films, and/or +C optical films. Optical films prepared employing such cellulose esters have a variety of commercial applications, such as, for example, as compensation films in liquid crystal displays and/or waveplates in creating circular polarized light used in 3-D technology.