Regioselectively substituted cellulose esters produced in a halogenated ionic liquid process and products produced therefrom
AssigneeEastman Chemical Company
InventorsCharles Michael Buchanan, Norma Lindsey Buchanan, Michael Eugene Donelson, Maryna Grigorievna Gorbunova, Thauming Kuo, Bin Wang
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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.
Claims11
A compensation film comprising at least one regioselectively substituted cellulose ester with a RDS ratio of C6>C3>C2;
- wherein said compensation film has an Rth range from about −400 to about +100 nm.
Dependencies are inferred from the claim text.