Water-based extender vehicle composition, and method for tinting and use
OwnerCynthia Allison, Barry Williamsinventors
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Abstract
The present invention relates to the use of esterified tall oil rosin, esterified wood rosin, esterified gum rosin, and mixtures thereof to enhance water-based flexographic ink. The products and methods of the present invention result in enhanced image clarity and resolution; enhanced image clarity and resolution as a result of elimination of most press-side imperfections such as ghosting, inefficient ink transfer and bronzing; increased ink mileage up to three times that of conventional water-based inks; achievement of fine-line details; increased gloss properties on high hold-out liners; and increased color strength and density on most paper and paperboard substrates.
Claims52
A composition for use as a flexographic water-based ink vehicle, ink additive or printing ink comprising:
- (a) two or more rosins, the rosins being selected from the group consisting of tree rosins, tall oil rosins, gum rosins, wood rosins, and esters and salts thereof,
- wherein the rosins comprise:
- i) about 3 to about 40 wt. % of a fumaric modified rosin or resin;
- and
- ii) about 15 to about 70 wt. % of a maleic modified rosin or resin.
A method of producing a composition for use as a flexographic water-based ink vehicle, ink additive or printing ink comprising admixing
- (a) two or more rosins, the rosins being selected from the group consisting of tree rosins, tall oil rosins, gum rosins, wood rosins, and esters and salts thereof,
- wherein the rosins comprise:
- (i) about 3 to about 40 wt. % of a fumaric modified rosin or resin;
- and
- (ii) about 15 to about 70 wt. % of a maleic modified rosin or resin.
Dependencies are inferred from the claim text.