公开(公告)号：US11034776B2

公开(公告)日：2021-06-15

申请号：US16831904

申请日：2020-03-27

Applicant: Eastman Chemical Company

Inventor： Matthew Allen Boone ,  Christopher Harlan Burk ,  Peter Borden Mackenzie ,  Jennifer A. Fish ,  Eduardo Gallas Cervo ,  Elaine Beatrice Mackenzie ,  Robert Joseph Maleski ,  Wesley McConnell ,  David William Norman ,  Tabatha Stearns ,  Bin Wang

IPC: C08B3/16 ,  B32B27/24 ,  B32B27/08 ,  B32B27/36 ,  B32B7/12 ,  B32B27/28 ,  C08L1/14 ,  B32B23/08 ,  B32B27/32 ,  B32B27/18 ,  G02B5/30 ,  B32B27/22 ,  B32B27/06 ,  G02F1/13363 ,  H01L51/52 ,  C08L1/08 ,  C08L1/10

Abstract: Regioselectively substituted cellulose esters having a plurality of pivaloyl substituents and a plurality of aryl-acyl substituents are disclosed along with methods for making the same. Such cellulose esters may be suitable for use in films, such as +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.

公开(公告)号：US20200055960A1

公开(公告)日：2020-02-20

申请号：US16665290

申请日：2019-10-28

Applicant: Eastman Chemical Company

Inventor： Charles Michael Buchanan ,  Michael Eugene Donelson ,  Elizabeth Guzman-Morales ,  Peter Borden Mackenzie ,  Bin Wang

IPC: C08B3/16 ,  G02B1/04 ,  C08L1/14 ,  C08J5/18

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.

公开(公告)号：US09964667B2

公开(公告)日：2018-05-08

申请号：US15064061

申请日：2016-03-08

Applicant: Eastman Chemical Company

Inventor： Bin Wang ,  Thauming Kuo ,  Michael Eugene Donelson ,  Douglas Stephens McWilliams

IPC: C09K19/00 ,  G02B1/08 ,  G02B5/30 ,  C08J5/18 ,  C08K5/01 ,  C08K5/105

CPC classification number: G02B1/08 ,  C08J5/18 ,  C08J2301/12 ,  C08J2301/14 ,  C08K5/01 ,  C08K5/105 ,  G02B5/3083 ,  Y10T428/1036 ,  Y10T428/105

Abstract: The present invention pertains to an optical film for use as a quarter wave plate (QWP) having a normal wavelength dispersion curve. More specifically, this invention relates to a quarter wave plate based on cellulose ester polymer and fused ring additives.

公开(公告)号：US20170174853A1

公开(公告)日：2017-06-22

申请号：US15448132

申请日：2017-03-02

Applicant: Eastman Chemical Company

Inventor： Michael Eugene Donelson ,  James Collins Maine ,  Bin Wang ,  Marcus David Shelby

IPC: C08J5/18 ,  B29C71/02 ,  G02B1/14 ,  G02B5/30 ,  G02F1/1335 ,  G02F1/13363 ,  C08K5/103 ,  B29D11/00

CPC classification number: C08J5/18 ,  B29C39/02 ,  B29C71/02 ,  B29D11/00788 ,  B29K2001/12 ,  B29K2105/0038 ,  B29L2011/00 ,  C08J2301/12 ,  C08K5/103 ,  G02B1/105 ,  G02B1/14 ,  G02B5/3025 ,  G02F1/133528 ,  G02F1/13363 ,  G02F2413/01 ,  Y10T428/105

Abstract: The present invention relates to films made from cellulose tricacetate having low hydroxyl content and certain plasticizers. These films can exhibit low or zero optical retardation values, making them particularly suitable for use in optical applications, such as in liquid crystal displays (LCD) as protective and compensator films.

公开(公告)号：US09309360B2

公开(公告)日：2016-04-12

申请号：US14108810

申请日：2013-12-17

Applicant: Eastman Chemical Company

Inventor： Bin Wang ,  Thauming Kuo ,  Michael Eugene Donelson ,  Douglas Stephens McWilliams

IPC: C09K19/00 ,  C08J5/18 ,  G02B5/30 ,  C08K5/01 ,  C08K5/105

CPC classification number: G02B1/08 ,  C08J5/18 ,  C08J2301/12 ,  C08J2301/14 ,  C08K5/01 ,  C08K5/105 ,  G02B5/3083 ,  Y10T428/1036 ,  Y10T428/105

Abstract: The present invention pertains to an optical film for use as a quarter wave plate (QWP) having a normal wavelength dispersion curve. More specifically, this invention relates to a quarter wave plate based on cellulose ester polymer and fused ring additives.

Abstract translation: 本发明涉及用作具有正常波长色散曲线的四分之一波片（QWP）的光学膜。 更具体地，本发明涉及基于纤维素酯聚合物和稠环添加剂的四分之一波片。

公开(公告)号：US20140168770A1

公开(公告)日：2014-06-19

申请号：US14108787

申请日：2013-12-17

Applicant: Eastman Chemical Company

Inventor： Bin Wang ,  Maryna Grigorievna Gorbunova ,  Brian Michael King

IPC: G02B5/30

CPC classification number: G02B5/3083 ,  B32B23/20 ,  B32B27/36 ,  B32B2457/20 ,  B32B2457/202 ,  C08B3/16 ,  G02B1/04 ,  G02F1/0063 ,  G02F2001/133637 ,  G02F2001/133638 ,  Y10T428/1036 ,  Y10T428/105 ,  C08L1/14

Abstract: The present invention relates to a single layer mixed cellulose ester film having a reversed optical dispersion. The mixed cellulose ester material has a DSOH from 0.35 to 1.35. By manipulating the thickness of the film, and the film stretching conditions, desirable optical retardation and optical dispersion properties can be obtained. The film can be used as an optical waveplate in liquid crystal displays to improve viewing angle, contrast ratio, and color shift.

Abstract translation: 本发明涉及具有反向光学分散体的单层混合纤维素酯薄膜。 混合纤维素酯材料的DSOH为0.35〜1.35。 通过操作膜的厚度和膜拉伸条件，可以获得期望的光学延迟和光学分散性能。 该膜可以用作液晶显示器中的光学波片，以改善视角，对比度和色移。