Fatty acid esters based on branched fatty acids and their use as printing ink solvents
View Patent ↗Fatty acid esters of which the fatty acid constituents are fatty acids containing a total of 12 to 22 carbon atoms and of which the alcohol constituents are saturated and/or mono- or polyolefinically unsaturated monoalcohols containing a total of 1 to 22 carbon atoms, with the additional proviso that the fatty acid constituents of the esters contain saturated and/or mono- or polyolefinically unsaturated fatty acids and have a branched structure, isostearic acid being excluded as the fatty acid constituent of the esters, are suitable as solvents for printing inks.
1. A printing ink composition comprising:
(a) at least one component selected from the group consisting of pigments and binders; and
(b) a solvent comprising: (1) an ester based on linear aliphatic fatty acid; (2) an ester based on branched saturated and/or mono- or polyolefinically unsaturated fatty acids; (3) an ester based on branched fatty acids containing an alicyclic group; and (4) an ester based on branched fatty acids containing an aryl group, wherein the fatty acid constituents of esters (1), (2), (3), and (4) each contain a total of 12 to 22 carbon atoms and wherein the alcohol constituents are saturated and/or mono- or polyolefinically unsaturated monoalcohols each containing a total of 1 to 22 carbon atoms.
2. The composition according to claim 1 , wherein the alicyclic group is substituted by an aliphatic group.
3. The composition according to claim 1 , wherein the aryl group is substituted by an aliphatic group.
4. The composition according dto claim 1 , wherein the fatty acid of components (1) to (4) are monomer fatty acids.
5. A method comprising:
(a) providing at least one component selected from the group consisting of pigments and binders; and
(b) mixing the at least one component with a solvent comprising: (1) an ester based on linear aliphatic fatty acids; (2) an ester based on branched saturated and/or mono- or polyolefinically unsaturated fatty acids; (3) an ester based on branched fatty acids containing an alicyclic group; and (4) an ester based on branched fatty acids containing an aryl group, wherein the fatty acid constituents of esters (1), (2), (3), and (4) each contain a total of 12 to 22 carbon atoms and wherein the alcohol constituents are saturated and/or mono- or polyolefinically unsaturated monoalcohols each containg a total of 1 to 22 carbon atoms.
6. The method according to claim 5 , wherein the alicyclic group is substituted by an aliphatic group.
7. The method according to claim 5 , wherein the aryl group is subtituted by an aliphatic group.
8. The method according to claim 5 , wherein the fatty acids of components (1) to (4) are monomer fatty acids.
9. The composition according to claim 1 , wherein the branched fatty acid has 18 carbon atoms.
10. The composition according to claim 1 , wherein the branched fatty acid is methyl-branched.
11. The composition according to claim 1 , wherein the branched fatty acid is saturated.
12. The composition according to claim 1 , wherein the branched fatty acid has at least one olefinic unsaturation.
13. The composition according to claim 1 , wherein the fatty acid is iso-oleic acid.
14. The composition according to claim 1 , wherein at least one of the alocohol constituents is a saturated monoalcohol having from 1 to 22 carbon atoms.
15. The composition according to claim 1 , wherein at least one of the alcohol constituents is selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, 2-ethylhexanol, and mixtures thereof.
16. The composition according to claim 5 , wherein the branched fatty acid has 18 carbon atoms.
17. The composition according to claim 5 , wherein the branched fatty acid is methyl-branched.
18. The composition according to claim 5 , wherein the branched fatty acid is saturated.
19. The composition according to claim 5 , wherein the branched fatty acid has at least one olefinic unsaturation.
20. The composition according to claim 5 , wherein the fatty acid is iso-oleic acid.
21. The composition according to claim 5 , wherein at least one of the alocohol constituents is a saturated monoalcohol having from 1 to 22 carbon atoms.
22. The composition according to claim 5 , wherein at least one of the alcohol constituents is selected from the group consisting of methanol, ethanol, n-propanol, isopropanol, n-butanol, isobutanol, 2-ethylhexanol, and mixtures thereof.