Patent Number: 8,871,924

Title: Regioselectively substituted cellulose esters produced in a tetraalkylammonium alkylphosphate ionic liquid process and products produced therefrom

Abstract: This invention relates a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate and processes to produce the cellulose solution. Another aspect of this invention relates to shaped articles prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising derivatives of cellulose prepared from a cellulose solution comprising at least one tetraalkylammonium alkylphosphate. Another embodiment of this invention relates to compositions comprising regioselectively substituted cellulose esters prepared from a cellulose solution comprising cellulose and at least one tetraalkylammonium alkylphosphate. In another embodiment of the invention, the cellulose esters of the present invention are used as protective and compensation films for liquid crystalline displays.

Inventors: Buchanan; Charles Michael (Kingsport, TN), Buchanan; Norma Lindsey (Kingsport, TN), Guzman-Morales; Elizabeth (Kingsport, TN)

Assignee: Eastman Chemical Company

International Classification: C08B 1/02 (20060101); C08B 3/04 (20060101); C08B 3/16 (20060101); C08B 3/10 (20060101)

Expiration Date: 2018-10-28 0:00:00