Patent ID: 9040683
Filing Date: 2015-05-26
Classification: A61K,C08B,C08L,C09D

Abstract:
1. A method for converting a C6 hydroxyl of an anhydroglucose unit of a cellulose ester interpolymer to a formyl group or a carboxyl group comprising: adding an amino substituted cyclic nitroxyl compound, a primary oxidant, and a terminal oxidant to a homogeneous solution having a pH of less than 4 to form a reaction mixture, wherein the homogeneous solution comprises a C passing of a reaction period sufficient to affect conversion of a C6 hydroxyl to a formyl group or a carboxy group and produce an oxidized cellulose ester interpolymer, wherein the oxidized cellulose ester interpolymer consists of anhydroglucose units: as the non-terminal monomer units of the oxidized cellulose ester interpolymer, wherein R