Comb-like polyetheralkanolamines in inks and coatings
Provided herein are compositions useful as ink or coatings which contain novel dispersants that are capable of dispersing pigments which are traditionally difficult to disperse while maintaining acceptable levels of viscosity. Use of dispersants as taught herein enables the preparation of a wide variety of inks and coatings having high pigment loading and existing within a conventionally-useful viscosity range.
1. A composition comprising:
a) a pigment component;
b) an effective pigment-dispersing amount of a dispersant having the structure:
wherein R 1 is a C 1 -C 100 aliphatic hydrocarbyl group; n is any integer from about 2 to about 50; R 2 is an alkoxylated hydrocarbyl group defined by the structure:
in which R 3 is selected from the group consisting of: hydrogen and any C 1 to C 24 hydrocarbyl group; X 1 , X 2 , X 3 , X 4 , X 5 , and X 6 in each occurrence are independently selected from the group consisting of: hydrogen, methyl and ethyl, subject to the proviso that at least one of the two X groups that are attached to the same alkoxy unit are hydrogen; p, q, and r are each independently any integer between zero and about 100, including zero, subject to the proviso that at least one of p, q, and r is not zero; and s is 0 or 1;
c) a grind resin; and
d) a solvent comprising hexane; mineral spirits; toluene; soy bean oil; castor oil; tall oil fatty acids; polyhydric alcohols; glycols; diols; glycol esters; polyalkyl glycols; alcohols having fewer than about 8 carbon atoms per molecule; ketones; esters; lactams, ethylene glycol, propylene glycol; butanediol; pentanediol; glycerol; propylene glycol laurate; polyethylene glycol; ethylene glycol monomethyl ether, ethylene glycol mono-ethyl ether; ethylene glycol mono-butyl ether; alcohols having fewer than about 8 carbon atoms per molecule; acetone; dioxane; ethyl acetate, propyl acetate, tertiary-butyl acetate, 2-pyrrolidone; or combinations thereof.
2. The composition of claim 1 , wherein the grind resin and the dispersant are the same.
3. The composition of claim 1 , wherein the grind resin comprises
a) a styrene, substituted-stryene monomer, or combinations thereof and
b) a carboxylated monomer, wherein the carboxylated monomer is selected from the group consisting of substituted or unsubstituted acrylic acid, methacrylic acid, maleic acid, the half esters of maleic acid, citriconic acid, itaconic acid, and combinations thereof.
4. The composition of claim 1 , wherein the grind resin is a styrene acrylate.
5. The composition of claim 1 , wherein the viscosity of the composition is less than or equal to the viscosity of the dispersant for all shear rates, and wherein the viscosity of the composition is less than or equal to the viscosity of the grind resin for all shear rates.
6. The composition of claim 1 , wherein the composition comprises from about 0.1 weight % to about 40 weight % grind resin, based on the weight of the pigment.
7. The composition of claim 1 wherein the pigment component is selected from the group consisting of phthalocyanine, carbon black, titanium oxides, chromates, sulfides, iron oxides, azo lakes, insoluble azo pigment, condensed azo pigments, chelate azo pigments, monoazo pigments, monoarylide, B-naphthol, naphthol AS, benzimidazolone, metal precipitated azo, disazo pigments, diarylide, disazo condensation, diazopyrazoione, bisacetoacetarylide, phthalocyanine pigments, perylenes, perylene, perinone pigments, anthraquinone pigments, quinacridone pigments, dioxazine pigments, thioindigo pigments, isoindolinone pigments, quinophthalone pigments, base dye lakes, acid dye lakes, nitro pigments, nitroso pigments, aniline black daylight fluorescent pigments, graphite carbon, isoindoline, isoindolinon, indigoid, diketopyrrolopyrrole, triarylcarbonium, metal complexes, pearl, liquid crystal pigments, fluorescence, and functional derivatives of the above-mentioned pigments.
8. The composition of claim 1 , wherein the composition comprises from about 1 weight % to about 80 weight % pigment, based on the total weight of the composition.
9. The composition of claim 8 , wherein the composition comprises from about 1 weight % to about 40 weight % pigment, based on the total weight of the composition.
10. The composition of claim 9 , wherein the composition comprises from about 2 weight % to about 10 weight % pigment, based on the total weight of the composition.
11. The composition of claim 1 , wherein the amount of said solvent component present is any amount between about 10% and 99% by weight based on the total weight of said composition.
12. The composition of claim 1 , wherein the solvent further comprises water.