Patent ID: 7811370

Claim:
A phase change ink composition comprising a colorant and an ink vehicle comprising a compound of the formula wherein R 1 , R 2 , R 3 and R 4 are each independently selected from an alkyl group, including substituted alkyl groups, unsubstituted alkyl groups, linear alkyl groups, and branched alkyl groups, and wherein hetero atoms either may or may not be present in the alkyl group, the alkyl group having from about 1 to about 30 carbon atoms, an alkylaryl group, including substituted alkylaryl groups, unsubstituted alkylaryl groups, linear alkylaryl groups, and branched alkylaryl groups, and wherein hetero atoms either may or may not be present in the alkyl portion of the alkylaryl group or the aryl portion of the alkylaryl group, the alkylaryl group having from about 4 to about 30 carbon atoms, an arylalkyl group, including substituted arylalkyl, unsubstituted arylalkyl groups, linear arylalkyl groups, and branched arylalkyl groups, and wherein hetero atoms either may or may not be present in the aryl portion of the arylalkyl group or the alkyl portion of arylalkyl, the arylalkyl group having from about 6 to about 30 carbon atoms, or hydrogen, wherein R 1 , R 2 , R 3 and R 4 can be the same or different, provided that both R 1 and R 2 cannot both be hydrogen and R 3 and R 4 cannot both be hydrogen; wherein X is comprised of a diisocyanate or a diisocyanate derivative, i is an integer between from about 3 to about 50, Y and Y′ are each independently selected from carbon, silicon, oxygen and hydrogen atoms, j is an integer between from about 1 to about 50, j′ is an integer between from about 1 to about 50, and the ratio of ΣX i /ΣY j Y′ j′ , for all non hydrogen atoms attached to X is from about 0.1 to about 1.5; wherein said ink simultaneously exhibits a melt temperature of about 35° C. to about 120° C., a complex viscosity of less than about 100 Poise at a jetting temperature of no more than about 140° C., and a Modulus of greater than about 0.1 GPa at about 25° C.