Ink dispersion

摘要

An ink dispersion includes an ink vehicle and a colorant dispersed in the ink vehicle. The ink vehicle includes a non-ionic surfactant and a solvent. The non-ionic surfactant has an HLB value ranges from about 5 to about 16, and is chosen from: i) a material represented by one of the formulas R1—O—(OR2)n—H, R1—(OR2)n—OH or R1—C6H4—(OR2)n—OH, wherein: R1 is chosen from a) a linear or cyclic alkyl group including from 3 to 20 carbon atoms, or b) a substituted or non-substituted alkyl group including from 6 to 18 carbon atoms, R2 is chosen from CH2CH2 or CH2CH2CH2, and n is an integer chosen from 2 to 100; or ii) a diester having at least one ethylene oxide repeating unit; or iii) an octylphenol having at least one ethylene oxide repeating unit.

主权项

1. An ink dispersion, consisting of:
an ink vehicle, consisting of:
a non-ionic surfactant having an HLB value ranging from about 5 to about 16, the non-ionic surfactant being selected from the group consisting of polyethylene glycol hexadecyl ether (C16H33—(OCH2CH2)2OH), polyethylene glycol stearate CH3(CH2)16COO(CH2CH2O)8H, and combinations thereof;water as a solvent; andoptionally an additive selected from the group consisting of a biocide, a buffering agent, a chelating agent, and combinations thereof; and a colorant dispersed in the ink vehicle; wherein the non-ionic surfactant is a displector, and wherein the displector, when combined with a frother from a waste paper recycling system, enables deinking of the colorant from a medium on which the colorant is established.