Abstract: Disclosed is a phase change carbon black ink composition comprising 1) a low polarity ink carrier comprising (A) a low polarity wax, optionally (B) an ester-terminated polyamide, (2) a dispersant, and (3) a carbon black colorant. The ink can be resistant to substantial aggregation and settling of the carbon black colorant in the melt and up to about the jetting temperature of the ink even when exposed to freeze thaw cycles.

Abstract: Disclosed is a phase change black ink composition comprising (1) a low polarity ink carrier comprising (A) an ester-terminated polyamide, (B) a Guerbet alcohol or a Guerbet alcohol mixture including at least one linear alcohol, and (C) a low polarity wax, and (2) a black colorant. The ink carrier can also include a dispersant. The ink is resistant to aggregation and settling of the black colorant when a standby-mode printer temperature for the ink is not more than about the gel temperature of the ink.

Abstract: Disclosed is a phase change ink composition and a method for forming the ink composition.

Abstract: Disclosed is an ink carrier comprising (A) an antioxidant mixture comprising (a) a hindered phenol antioxidant, and (b) a hindered amine antioxidant, (B) a polyalkylene wax, (C) a functional wax, and (D) an ester-terminated amide. The low polarity ink carrier is substantially resistant to phase separation, has excellent thermal stability, resists autocatalytic degradation of the ink composition and a substantial color shift upon standing, and provides enhanced humidity resistance. This ink carrier can be combined with a colorant to produce an ink composition.

Abstract: Disclosed is an ink carrier comprising an ester terminated oligo-amide material having a substantially low polydispersity. This ink carrier can be combined with a colorant to produce an ink composition.

Abstract: An ink comprising a liquid vehicle, a gelling agent, an electrolyte and optionally at least one colorant. A method of forming an image, comprising heating the ink to a first temperature, wherein the first temperature is above a sol-gel temperature, and jetting the heated ink onto a transfer member or an image receiving substrate, wherein the transfer member or image receiving substrate is maintained at a second temperature at which the ink forms a gel.

Abstract: Processes for preparing bis(urea-urethane) compounds wherein R1 is alkyl, aryl, arylalkyl, or alkylaryl, R2 is alkylene, arylene, arylalkylene, or alkylarylene, R3 is alkylene, arylene, arylalkylene, or alkylarylene, and R4 is hydrogen or alkyl, comprising: (1) first bring to a reaction temperature of about 20-125° C. a reaction mixture comprising monoalcohol reactant R1—OH and diisocyanate reactant OCN—R2—NCO, the monoalcohol being present in an amount of about 0.8-1.

Abstract: Disclosed is a phase change ink composition comprising a phase change ink carrier and a bis(urea-urethane) compound of the formula wherein R1 and R1? each, independently of the other, is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group, R2 and R2? each, independently of the other, is an alkylene group, an arylene group, an aryalkylene group, or an alkylarylene group, R3 is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, and R4 and R5 each independently of the other, is a hydrogen atom or an alkyl group.

Abstract: Disclosed is a bis(urea-urethane) compound of the formula wherein R1 and R1? each, independently of the other, is an alkyl group, wherein at least one of R1 and R1? has at least about 6 carbon atoms, R2 and R2? each, independently of the other, is an alkylene group, wherein at least one of R2 and R2? has at least about 3 carbon atoms, R3 is an alkylene group having at least about 2 carbon atoms, and R4 and R5 each, independently of the other, is a hydrogen atom or an alkyl group, and wherein R1 and R1? each contain no more than 2 fully fluorinated carbon atoms.

Abstract: Disclosed is a phase change ink composition comprising (a) an ink carrier comprising (1) a polyalkylene wax and (2) a component selected from the group consisting of (A) amides, (B) esters, (C) ester-amides, (D) urethanes, (E) ureas, (F) urethane-ureas, and (G) mixtures thereof, and (b) pigment particles having hydrophobic functional groups covalently bonded to the surfaces thereof, said ink composition having a melting point no lower than about 40° C., said ink composition having a melting point no higher than about 160° C.

Abstract: An ink composition is disclosed which comprises at least one ink vehicle, at least one colorant and at least one metal oxide. The colorant may be a dye or a pigment, or both, and the colorant is non-reactive with the metal oxide in the ink vehicle. Also disclosed are inkjet formulations using the above-described compositions and methods of improving such properties as optical density.