Patent ID: 7452414

Claim:
An ink composition comprising: a cyclic silazane-based compound represented by Formula 1 below; a colorant; and a solvent: wherein, R 1 through R 5 are each independently hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, a substituted or unsubstituted C 1 -C 20 heteroalkyl group, a substituted or unsubstituted C 2 -C 20 alkenyl group, a substituted or unsubstituted C 1 -C 20 alkoxy group, a substituted or unsubstituted C 1 -C 20 heteroalkoxy group, a substituted or unsubstituted C 1 -C 20 alkylsulfonamide group, a substituted or unsubstituted C 6 -C 20 arylsulfonamide group, a substituted or unsubstituted C 1 -C 20 acylamino group, a C 1 -C 20 alkylureido group, a C 6 -C 20 arylureido group, a C 2 -C 20 alkoxycarbonyl group, a C 2 -C 20 alkoxycarbonylamino group, a carbamoyl group, a sulfamoyl group, a sulfo group or its salt, a carboxyl group or its salt, a substituted or unsubstituted C 1 -C 20 hydroxyalkyloxyalkyl group, a substituted or unsubstituted C 1 -C 20 dialkylaminoalkyl group, a substituted or unsubstituted C 6 -C 20 pyridylalkyl group, a substituted or unsubstituted C 5 -C 20 pyridyl group, a substituted or unsubstituted C 6 -C 20 imidazolyl group, a hydrazine group, a hydrazone group, a substituted or unsubstituted C 1 -C 20 pyridylalkyl group, a substituted or unsubstituted C 6 -C 20 aryl group, a substituted or unsubstituted C 6 -C 20 arylalkyl group, a substituted or unsubstituted C 6 -C 20 heteroaryl group, a substituted or unsubstituted C 6 -C 20 heteroarylalkyl group, a substituted or unsubstituted C 6 -C 20 heteroaryloxy group, a substituted or unsubstituted C 6 -C 20 heteroarylalkenyl group, a substituted or unsubstituted C 3 -C 20 cycloalkyl group, or a substituted or unsubstituted C 3 -C 20 heterocycloalkyl group; and Z comprises a —(CH 2 ) m — group where m is an integer ranging from 1 to 10, and at least one methylene group is substituted by an oxygen, sulfur, a substituted or unsubstituted C 1 -C 10 alkylene group, a substituted or unsubstituted C 1 -C 10 heteroalkylene group having 1-9 heteroatoms, or a substituted or unsubstituted C 1 -C 10 alkenylene group where R 6 , R 7 , and R 8 are each independently hydrogen, a substituted or unsubstituted C 1 -C 20 alkyl group, or a substituted or unsubstituted C 2 -C 20 alkenyl group.