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US 6,664,311 B2Granted
Toner compounds and compositions for black offset inks
AssigneeMilliken & Company
InventorRajnish Batlaw
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AssigneeMilliken & Company
InventorRajnish Batlaw
Estimating the term…
A novel colorant compound is provided which is the addition product of an organic chromophore having at least one reactive hydroxyl or amine substituent, a mono or polyisocyanate, and/or an alcohol. Such a compound provides solubility in oil-based ink compositions, complete water resistance and excellent oil based ink compositions. Furthermore, such colorants provide an easy and efficient way to tone shades of oil based inks. In addition, such colorants provide a way to tone carbon black based lithographic inks that gives the images a appearance of jet black on various types of printing substrates. A method for producing such a colorant is also provided, as well as offset ink compositions comprising such a colorant (including other colorants that provide the same toner performance within black pigment formulations).
A black offset ink composition comprising at least one black pigment, and least one diluent, which is selected from the group consisting of mineral oils, hydrocarbon solvents, vegetable oils and mixtures thereof and a toner component, wherein said toner component is a urethane compound produced through the reaction of an organic chromophore having at least one reactive hydroxyl or amine substituent group and at least one monoisocyanate reactant.
A black offset ink composition comprising at least one black pigment, at least one diluent, which is selected from the group consisting of mineral oils, hydrocarbon solvents, vegetable oils and mixtures thereof and a toner component, wherein said toner component is a urethane or urea compound produced through the sequential reaction of an organic chromophore having at least one reactive hydroxyl or amine substituent group and at least one polyisocyanate to produce a resultant isocyanate intermediate, followed by reaction of said resultant isocyanate intermediate with a long chain alcohol having at least eight carbon atoms therein.
A black offset ink composition comprising at least one black pigment, at least one diluent, which is selected from the group consisting of mineral oils, hydrocarbon solvents, vegetable oils and mixtures thereof and a toner component, wherein said toner component is a urethane compound conforming to the structure of Formula (I):
Dependencies are inferred from the claim text.