Isocyanate-derived materials for use in phase change ink jet inks
AssigneeTektronix, Inc.
InventorsLoc V. Bui, Clifford R. King, Jeffery H. Banning, Donald R. Titterington
Life of this patent
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Abstract
Resins and waxes made by reacting selected nucleophiles, including alcohols and/or amines, with an isocyanate are disclosed. The order of addition of the isocyanate and the different nucleophiles can tailor the distribution of di-urethane, mixed urethane/urea, and/or di-urea molecules in the final resin product. The isocyanate-derived resin and wax materials are useful as ingredients as phase change ink carrier compositions used to make phase change ink jet inks.
Claims17
A phase change ink carrier composition comprising in combination;
- (a) a urethane/urea isocyanate-derived material;
- (b) a tackifier, and
- (c) a mono-amide.
A method for producing a layer of a phase change ink on a surface of a substrate, which comprises:
- (1) forming a phase change ink composition in the solid phase comprising an admixture of (a) a phase change carrier composition and (b) a compatible colorant material;
- the phase change carrier composition being a reaction product comprising a urethane/urea mixture formed by the reaction of at least one alcohol reactant with at least one isocyanate reactant and at least one amine reactant;
- (2) transferring the solid phase, phase change ink composition to a phase change ink application means;
- (3) raising the operating temperature of the application means to a level whereby a liquid phase, phase change ink composition is formed;
- (4) providing a substrate in proximity to the application means;
- (5) applying a predetermined pattern of the liquid phase, phase change ink composition to at least one surface of the substrate;
- (6) lowering the temperature of the applied ink composition to form a solid phase, phase change ink pattern on the substrate.
A method for producing a layer of a phase change ink on a surface of a substrate, which comprises:
- (1) employing in a printing apparatus a phase change ink composition in the solid phase comprising an admixture of (a) a phase change carrier composition and (b) a compatible colorant material;
- the phase change carrier composition being a reaction product comprising a urethane/urea mixture formed by the reaction of at least one alcohol reactant with at least one isocyanate reactant and at least one amine reactant;
- (2) applying the phase change ink composition in a desired pattern to an intermediate transfer surface;
- (3) transferring the desired pattern of the phase change ink composition to the surface of the substrate.
Dependencies are inferred from the claim text.