Low VOC universal paint colorant compositions
View Patent ↗A universal colorant composition for both solvent- and water-based paints and coatings includes a colorant component, such as pigment, dye, colorant, tinting agent and/or metal effect agent; a surfactant package including at least one alkyd-compatible; surfactant and at least one latex-compatible surfactant; and a carrier. When the surfactant package is added to a base paint it provides a mixture having a drop in viscosity of less than about 50%.
1. A colorant composition, comprising:
a colorant component;
a universal surfactant package, comprising at least one alkyd-compatible surfactant; and at least one latex-compatible surfactant; and
a carrier;
wherein the composition optionally includes additional additives selected from the group consisting of a biocide; a humectant; one or more extender fillers and any combination thereof;
wherein the universal surfactant package is compatible with paints that use associative thickeners; and
wherein the composition is in the form of a liquid universal colorant composition that is compatible with both latex and alkyd paints.
2. The colorant composition of claim 1 , wherein the composition contains less than 50 g/l VOC.
3. The colorant composition of claim 2 , wherein the composition contains less than 35 g/l VOC.
4. The colorant composition of claim 3 , wherein the composition contains less than 20 g/l VOC.
5. The colorant composition of claim 1 , wherein the composition comprises the colorant component, the carrier, and a solid portion as the binder, and the colorant-to-binder ratio is from 0.5 to 14.3.
6. The colorant composition of claim 5 , wherein the colorant-to-binder ratio is from 1.0 to 6.5.
7. The colorant composition of claim 6 , wherein the colorant-to-binder ratio is from 1.1 to about 4.0.
8. The colorant composition of claim 1 , wherein the universal surfactant package constitutes between 3 and 22 wt. % of the composition.
9. The colorant composition of claim 8 , wherein the universal surfactant package constitutes between 4 and 20 wt. % of the composition.
10. The colorant composition of claim 9 , wherein the universal surfactant package constitutes between 6.5 and 18 wt. % of the composition.
11. The colorant composition of claim 1 , wherein the alkyd-compatible surfactant comprises bis(tridecyl)ester of sodium sulfosuccinic acid, lecithin, dry lecithin, fatty acid modified polyester, nonyl phenol ethoxylate, linear alcohol ethoxylate, alkyl polyethylene glycol ether, ethylene oxide/propylene oxide block copolymer, secondary alcohol ethoxylate, nonionic tetrafunctional ethylene oxide/propylene oxide block copolymer, alkyl aryl polyether alcohol with nonionic solubilizer, anionic nonyl phenol ethoxylate phosphate ester, alkyl ammonium salt of low molecular weight polycarboxylic acid polymer, or difunctional propylene oxide/ethylene oxide block copolymer having secondary —OH groups.
12. The colorant composition of claim 1 , wherein the alkyd-compatible surfactant comprises bis(tridecyl)ester of sodium sulfosuccinic acid, lecithin, dry lecithin, water dispersible lecithin, secondary alcohol ethoxylate, linear alcohol ethoxylate, alkyl aryl polyether alcohol with nonionic solubilizer, dodecyl phenol ethoxylate, dinonyl sulfosuccinate or alkyl polyethylene glycol ethers.
13. The colorant composition of claim 1 , wherein the latex-compatible surfactant comprises nonyl phenol ethoxylate phosphate ester, alkyl ammonium salt of low molecular weight polycarboxylic acid polymer, nonyl phenol ethoxylate, alkyl polyethylene glycol ether, difunctional propylene oxide/ethylene oxide block having secondary —OH groups, secondary alcohol ethoxylate, nonionic polyethylene thioether, modified polyalkoxylate with groups having acidic affinity, dodecyl phenol ethoxylate, high molecular weight block copolymer, preneutralized acrylic polymer, alkylaryl polyglycol ether, anionic polyelectrolyte sodium salt of polycarboxylic acid, hydrophobic copolymer of polycarboxylic acid, propylene oxide/ethylene oxide difunctional block copolymer having secondary —OH groups, ethylene oxide/propylene oxide block copolymer, a surfactant blend, or an amine salt of a hydrophilic copolymer of polycarboxylic acid.
14. The colorant composition of claim 1 , wherein the latex-compatible surfactant comprises an alkyl polyethylene glycol ether formed from a C10-alcohol and ethylene oxide, secondary alcohol ethoxylate, propylene oxide/ethylene oxide difunctional block copolymer having secondary —OH groups, ethylene oxide/propylene oxide block copolymer, alkylaryl polyglycol ether, dodecyl phenol ethoxylate, blend of nonylphenol ethoxylate and sodium salt of dibutylnaphthalene sulfonate, dinonyl sulfosuccinate, polyethylene glycol 40 hydrogenated Caster oil, or amine salt of a hydrophilic copolymer of polycarboxylic acid.
15. The colorant composition of claim 1 , wherein the colorant component is an organic or inorganic pigment, colorant, dye, tinting agent, metal effect agent, or any combination thereof.
16. The colorant composition of claim 15 , wherein the pigment is selected from the group consisting of titanium dioxide white, carbon black, lampblack, black iron oxide, red iron oxide, transparent red oxide, yellow iron oxide, transparent yellow oxide, brown iron oxide, phthalocyanine green, phthalocyanine blue, naphthol red, quinacridone red, quinacridone magenta, quinacridone violet, DNA orange, organic yellows and any combination thereof.
17. The colorant composition of claim 1 , further comprising humectant.
18. The colorant composition of claim 17 , wherein the humectant is a dihydric or polyhydric alcohol.
19. The colorant composition of claim 18 , wherein the humectant is a polyether.
20. The colorant composition of claim 19 , wherein the polyether comprises a polyalkyl glycol, polyhydroxyether, polysaccharide, modified polyurea, or polyalkylene oxide.
21. The colorant composition of claim 20 , wherein the polyether comprises a polyethylene glycol or polypropylene glycol and has a molecular weight between about 190 and about 800.
22. The colorant composition of claim 21 , wherein the polyether is polyethylene glycol having a molecular weight between 190 and 800.
23. The colorant composition of claim 22 , wherein the polyether is polyethylene glycol having a molecular weight between 275 and 325.
24. The colorant composition of claim 20 , wherein the polyether is polyethylene glycol having a molecular weight between 285 and 315.
25. The colorant composition of claim 20 , wherein the polyether is polyethylene glycol 300 or polyethylene glycol 400.
26. The colorant composition of claim 1 , wherein the composition has less than 0.5% of alkylphenol ethoxylate surfactants (APE).
27. The colorant composition of claim 26 , wherein the composition has less than 0.1% of alkylphenol ethoxylate surfactants (APE).
28. The colorant composition of claim 1 , wherein the composition is stable and does not require agitation prior to use.
29. The colorant composition of claim 1 , wherein after heating at 122° F. (50° C.) for 6 weeks the composition has a viscosity increase of less than 15 KU.
30. The colorant composition of claim 29 , wherein after heating at 122° F. (50° C.) for 6 weeks the composition has a viscosity increase of less than 10 KU.
31. The colorant composition of claim 30 , wherein after heating at 122° F. (50° C.) for 6 weeks the composition has a viscosity increase of less than 5 KU.
32. A paint or coating comprising
a) the colorant composition of claim 1 ; and
b) a base paint;
wherein after addition of the colorant composition the paint will have a viscosity drop (change) of 20 KU's.
33. The paint or coating comprising of claim 32 , wherein after addition of the colorant composition the paint will have a viscosity drop of less than 15 KU's.
34. The colorant composition of claim 1 , consisting essentially of the colorant component; the at least one alkyd-compatible surfactant; the at least one latex-compatible surfactant; the carrier; and the additives.