公开(公告)号：US20240352224A1

公开(公告)日：2024-10-24

申请号：US18681689

申请日：2022-08-05

Applicant: Eastman Chemical Company

Inventor： QUIANQIAN ZHANG ,  BIN WANG ,  CASEY LYNN ELKINS ,  WESLEY WAYNE MCCONNELL

IPC: C08K5/07 ,  C08J5/18 ,  C08K5/12 ,  C08K5/18 ,  C08K5/3492 ,  G02B1/04

CPC classification number: C08K5/07 ,  C08J5/18 ,  C08K5/12 ,  C08K5/18 ,  C08K5/3492 ,  G02B1/04 ,  C08J2301/14

Abstract: The present application discloses stretched films comprising regioselectively substituted cellulose esters and a component A Formula (I), Formula (II), wherein rings A, B, C, R1, R2, R5, R6, R8, R9, m; n; and k are defined herein. The films exhibit negative birefringence and improved wavelength dispersion.

公开(公告)号：US20170204201A1

公开(公告)日：2017-07-20

申请号：US15425058

申请日：2017-02-06

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： CHARLES MICHAEL BUCHANAN ,  NORMA LINDSEY BUCHANAN ,  ROBERT THOMAS HEMBRE ,  JUANELLE LITTLE LAMBERT ,  MICHAEL EUGENE DONELSON ,  MARYNA GRIGORIEVNA GORBUNOVA ,  THAUMING KUO ,  BIN WANG

IPC: C08B3/16 ,  C08J5/18 ,  C09D101/12 ,  C09D101/10

CPC classification number: C08B3/16 ,  C07D233/54 ,  C08B1/003 ,  C08B3/28 ,  C08J5/18 ,  C08J2301/10 ,  C08J2301/12 ,  C08J2301/14 ,  C08L1/14 ,  G02B1/14 ,  G02B5/3083 ,  G02F1/13363

Abstract: This invention relates to novel compositions comprising regioselectively substituted cellulose esters. One aspect of the invention relates to processes for preparing regioselectively substituted cellulose esters from cellulose dissolved in ionic liquids. Another aspect of the invention relates to the utility of regioselectively substituted cellulose esters in applications such as protective and compensation films for liquid crystalline displays.

公开(公告)号：US20230305207A1

公开(公告)日：2023-09-28

申请号：US18014571

申请日：2021-06-30

Applicant: EASTMAN CHEMICAL COMPANY

Inventor： QIANQIAN ZHANG ,  BIN WANG ,  STEVEN V. HALDEMAN ,  CASEY LYNN ELKINS

IPC: G02B5/30 ,  G02B27/01

CPC classification number: G02B5/3016 ,  G02B27/0101

Abstract: The present application discloses interlayers comprising half waveplate (“HWP”) films and head-up display systems incorporating the interlayers. The interlayers and head-up display systems are optimized so that the optical axis has an angle phi (Φ) relative to the axis formed from the p-polarization direction of a display light projected onto the plane of the HWP film. The optimized φ depends on the optical properties of the films.

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.