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.
Claims20
A cellulose ester comprising at least two different acyl groups, wherein at least one of said acyl groups comprises an aromatic compound, wherein said cellulose ester is regioselectively substituted with a RDS ratio of C6>C3>C2.
A regioselectively substituted cellulose ester comprising at least two different acyl groups, wherein at least one of said acyl groups comprises an aromatic compound, wherein the degree of substitution of said aromatic compound is greater at the C2 and C3 positions relative to the C6 position.
Dependencies are inferred from the claim text.