Resinates from monomer
View Patent ↗Reduced-rosin compositions of printing inks and the resinate binders therein, and the processes of preparation thereof, are described. In said compositions, a portion of the rosin normally used in the art is replaced by Monomer, and is further reacted with α,β-unsaturated carboxylic compound, alkaline metal salt, and solvent to produce the resinate binder product. Said resinate binder may then be formulated with a colorant to produce an ink, preferably for use in publication gravure.
1. A resinate composition comprising the reaction product of reactants, the reactants comprising:
(a) rosin;
(b) Monomer; and
(c) metal salt, the metal salt comprising a metal cation, the metal selected from Group IIA or Group IIB metals of the Periodic Table.
2. The composition of claim 1 wherein the reactants comprise about 5-85 wt % rosin, about 1-50 wt % Monomer, and about 1-15 wt % metal salt, based on the total weight of the reactants.
3. The composition of claim 1 wherein the reactants comprise acid equivalents attributed to fatty arid and acid equivalents attributed to rosin, and Monomer contributes about 55-1% of the total acid equivalents attributed to rosin and fatty acid.
4. The composition of claim 3 wherein Monomer contributes 35-10% of the total acid equivalents attributed to rosin and fatty acid.
5. The composition of claim 1 wherein the reactants comprise acid equivalents attributed to Monomer and acid equivalents attributed to rosin, and the ratio of acid equivalents attributed to rosin:acid equivalents attributed to Monomer is in the range of about 0.5:1 to 15:1.
6. The composition of claim 5 wherein the range is 1:1 to 5:1.
7. The composition of claim 1 wherein the reactants further comprise α,β-unsaturated carboxylic compound, tall oil fatty acid, or a combination thereof.
8. The composition of claim 7 wherein the reactants comprise at least one of:
(a) about 1-25 wt % α,β-unsaturated carboxylic compound, and
(b) up to about 2 wt % tall oil fatty acid;
where the wt % values are based on the total weight of the reactants.
9. The composition of claim 1 wherein the reactants further comprise maleic anhydride, the metal is a mixture of calcium and magnesium, and the composition comprises toluene.
10. The composition of claim 1 further comprising a solvent selected from one or a combination of an inorganic solvent and an organic solvent, wherein the organic solvent does not contain a hydroxyl, aldehyde, alkenyl, cycloalkenyl, or nitrogen-containing group.
11. The composition of claim 1 wherein the reactants further comprise a reactant selected from the group consisting of polyhydric alcohol, phenolic resin, phenolic compound, aldehyde, and mixtures thereof.
12. The composition of claim 11 wherein the reactants comprise at least one of:
(a) up to about 25 wt % polyhydric alcohol;
(b) up to about 50 wt % phenolic compound; and
(c) up to about 40 wt % aldehyde;
where the wt % values are based on the total weight of the reactants.
13. A process for preparing a resinate composition comprising the steps of
(a) melting rosin in a reaction vessel, optionally in admixture with Monomer;
(b) charging the reaction vessel with Monomer if Monomer is not already present in the reaction vessel;
(c) charging the reaction vessel with a metal salt comprising a cation selected from Group IIA or Group IIB of the Periodic Table, and optionally solvent, to provide a reaction mixture;
(d) incubating the reaction mixture at elevated temperature to produce a reaction product; and
(e) cooling the reaction product (e) to yield a resinate composition.
14. The process of claim 13 wherein the composition is prepared from reactants, the reactants comprising about 5-85 wt % rosin, about 1-50 wt % Monomer, and about 1-15 wt % metal salt, based on the total weight of reactants, and 0-80 wt % solvent based on the weight of the composition.
15. The process of claim 13 further comprising adding to the reaction vessel at least one of:
(a) up to about 25 wt % polyhydric alcohol;
(b) up to about 50 wt % phenolic compound; and
(c) up to about 40 wt % aldehyde;
where the wt % values are based on the total weight of reactants charged to the reaction vessel.
16. The process of claim 13 wherein the resinate composition is prepared by a fusion method.
17. The process of claim 16 wherein the reaction vessel is charged with about 20-85 wt % rosin, about 1-50 wt % Monomer, about 1-15 wt % alkaline metal salt, up to about 30 wt % hydrocarbon solvent, up to about 5 wt % lower organic acid, and 0-5 wt % water.
18. The process of claim 16 further comprising
(a) charging the reaction vessel with phenolic compound;
(b) charging the reaction vessel with formaldehyde.
19. The process of claim 16 further comprising charging the reaction vessel with polyhydric alcohol.
20. A resinate composition formed by the process of claim 13 .
21. A resinate composition prepared by the process of claim 16 .
22. In a process for preparing a metal resinate of rosin, the improvement comprising substituting up to about 55 acid equivalent percent of the rosin with Monomer.
23. A printing ink comprising pigment and the resinate composition of claim 1 .
24. A printing ink varnish comprising the resinate composition of claim 1 .