Patent ID: 6831194
Filing Date: 2004-12-14
Classification: C01P,C09C,C09D

Abstract:
A surface modified carbonaceous material, comprising a plurality of gamma keto carboxyl containing functional groups of the general formula â€”(CO)â€”CR1R3â€”CR2R4â€”(CO)OM surface bonded thereto, wherein R1, R2, R3, and R4 independently or collectively represent hydrogen, hydroxyl, amino, trimethyl amino, sulfonate, C1-C20 alkyl, C2-C20 alkenyl, C2-C20 alkynyl, C3-C7 cycloalkyl, C3-C7 cycloalkenyl, heterocycle, carbon-carbon bond, or aryl substituent, wherein the substituents can be substituted or unsubstituted, and wherein M is a hydrogen or a cationic species.