High bio-renewable content inks and resins
AssigneeSun Chemical Corporation
InventorsJosie M. Rosen, Guy VanOudenhoven, Ralph Arcurio
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Abstract
The present invention provides novel anionic modified rosin ester resins having a high BRC content, up to 100% BRC. The resins of the present invention are useful as emulsion, dispersion, or solution resins. High BRC content pigment grind vehicles, coatings, and finished inks can be prepared using the resins of the present invention. Advantageously, the finished inks of the present invention have equal to or superior properties compared to current commercially available inks sold as sustainable products, but having little to no BRC content. The present invention represents a significant step towards developing sustainable inks and coatings that are better for the environment.
Claims21
A mixture of anionic modified rosin esters, wherein the mixture is the reaction product of:
- (a) 1 wt % to 65 wt % of one or more rosin acid monomers or dimers, based on the total weight of reactants;
- and
- (b) 35 wt % to 99 wt % of one or more organic acids having one or more hydroxyl groups, based on the total weight of the reactants;
- wherein:
- i. the modified rosin ester has a bio-renewable carbon (BRC) content of 95% to 100%;
- ii. the modified rosin ester has an acid value of 100 mg KOH/g to 400 mg KOH/g.
A process for preparing an anionic modified rosin ester, comprising:
- reacting:
- (a) 1 wt % to 65 wt % of a rosin, based on the total weight of the reactants;
- and
- (b) 35 wt % to 99 wt % one or more organic acids having one or more hydroxyl groups, based on the total weight of the reactants;
- in a thermal adduction reaction, performed at a temperature of 150° C. to 225° C.;
- to obtain an anionic modified rosin ester;
- wherein:
- i. the hydroxyl group of the organic acid reacts as an alcohol to increase the acid value of the rosin;
- ii. the modified rosin ester has a bio-renewable carbon (BRC) content of 95 wt % to 100%;
- and
- iii. the modified rosin ester has an acid value of 100 mg KOH/g to 400 mg KOH/g.
Dependencies are inferred from the claim text.