Inorganic pigment dispersions containing fatty acid ethanol amide ethoxylates and amines
View Patent ↗The subject matter of the invention relates to aqueous pigment preparations containing (A) 30 to 75% by weight of at least one inorganic white or colored pigment or a mixture of different inorganic white or colored pigments, (B) 0.01 to 15% by weight of at least one fatty acid ethanol amide ethoxylate of the formula (I), in which R 1 is a linear or branched alkyl radical or alkenyl radical with 7 to 21 carbon atoms, and n is a whole number from 2 to 40, (C) 0.01 to 5% by weight of at least one amine of the formula (II), in which R 2 is a linear or branched alkyl radical or alkenyl radical with 8 to 22 carbon atoms, identical to or different from R 1 , A represents an iminopropyl group —NH—CH 2 —CH 2 —CH 2 —, an oxyethyl group —O—CH 2 —CH 2 — or an oxypropyl group —O—CH 2 —CH(CH 3 )—CH 2 —, and a is a whole number from 0 to 5, wherein the compound of the formula (II); can be present in the form of an ammonium salt, and (E) water.
1. An aqueous pigment preparation comprising
(A) 30 to 75% by weight of at least one inorganic white pigment or chromatic pigment or a mixture of various inorganic white pigments or chromatic pigments,
(B) 0.01 to 15% by weight of at least one fatty acid ethanolamide ethoxylate of the formula (I),
in which
R 1 is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms,
n is an integer from 2 to 40,
(C) 0.01 to 5% by weight of at least one amine of the formula (II)
in which
R 2 is a linear or branched alkyl or alkenyl radical having 8 to 22 carbon atoms, the same as or different than R 1 ,
A is an iminopropyl group —NH—CH 2 —CH 2 —CH 2 —, an oxyethyl group —O—CH 2 —CH 2 — or an oxypropyl group —O—CH 2 —CH(CH 3 )—CH 2 —,
and
a is an integer from 0 to 5,
where the compound of the formula (II) may be in the form of an ammonium salt, and
(E) water.
2. The aqueous pigment preparation as claimed in claim 1 , in which the fatty acid ethanolamide ethoxylate of the formula (I) has been prepared by addition of ethylene oxide onto a fatty acid ethanolamide, and n is an integer from 3 to 40.
3. The aqueous pigment preparation as claimed in claim 1 , in which A is —NH—CH 2 —CH 2 —CH 2 and a is 1.
4. The aqueous pigment preparation as claimed in claim 1 , in which A is —O—CH 2 —CH 2 — or —O—CH 2 —CH(CH 3 )—CH 2 — and a is an integer from 1 to 5.
5. The aqueous pigment preparation as claimed in claim 1 , containing 1 to 10% by weight of a fatty acid ethanolamide ethoxylate of the formula (I).
6. The aqueous pigment preparation as claimed in claim 1 , containing 0.1 to 2% by weight of an amine of the formula (II).
7. The aqueous pigment preparation as claimed in claim 6 , in which, in formula (II), a=0.
8. The aqueous pigment preparation as claimed in claim 1 , containing 10 to 65% by weight of water.
9. The aqueous pigment preparation as claimed in claim 1 , in which R 1 comprises 11 to 19 carbon atoms.
10. The aqueous pigment preparation as claimed in claim 1 , in which R 2 comprises 12 to 20 carbon atoms.
11. The aqueous pigment preparation as claimed in claim 1 , having a viscosity of 10 to 10,000 mPas, wherein the viscosity is determined with a cone/plate viscometer at a shear rate of 1/60 sec −1 .
12. The aqueous pigment preparation as claimed in claim 1 , further comprising (D) up to 30% by weight of at least one auxiliary customary for the production of aqueous pigment preparations, selected from the group consisting of wetting agents, anionic dispersants, humectants, solvents, defoamers, rheology additives, preservatives, buffer substances, and pH regulators.
13. The aqueous pigment preparation as claimed in claim 12 , containing up to 15% by weight of at least one humectant or solvent, selected from the group consisting of glycol ethers having a mean molecular weight of 200 to 20,000 g/mol.
14. The aqueous pigment preparation as claimed in claim 12 , containing up to 2% by weight of defoamer.
15. The aqueous pigment preparation as claimed in claim 12 , containing up to 1% by weight of an in-can preservative.
16. A macromolecular material, a coating composition, a lacquer or a paint, comprising at least one aqueous pigment preparation as claimed in claim 1 .
17. A two-dimensional sheet structure comprising at least one aqueous pigment preparation as claimed in claim 1 .
18. A process for coloring a macromolecular material, a coating composition, a lacquer or a paint, comprising the step of adding an aqueous pigment preparation comprising
(A) 30 to 75% by weight of at least one inorganic white pigment or chromatic pigment or a mixture of various inorganic white pigments or chromatic pigments,
(B) 0.01 to 15% by weight of at least one fatty acid ethanolamide ethoxylate of the formula (I),
in which
R 1 is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms,
n is an integer from 2 to 40,
(C) 0.01 to 5% by weight of at least one amine of the formula (II)
in which
R 2 is a linear or branched alkyl or alkenyl radical having 8 to 22 carbon atoms, the same as or different than R 1 ,
A is an iminopropyl group —NH—CH 2 —CH 2 —CH 2 —, an oxyethyl group —O—CH 2 —CH 2 — or an oxypropyl group —O—CH 2 —CH(CH 3 )—CH 2 —,
and
a is an integer from 0 to 5,
where the compound of the formula (II) may be in the form of an ammonium salt, and
(E) water to the macromolecular material, the coating composition, the lacquer or the paint.