Fatty acid condensation products as dispersing agent in pigment preparations

1. An aqueous pigment preparation comprising

(A) 1.0 to 75.0 wt % of at least one organic or inorganic white or chromatic pigment, or a mixture of different organic and inorganic white or chromatic pigments,

(B) 0.01 to 8.0 wt % of at least one fatty acid condensation product of the formula (I),

 in which

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms,

A is an oxygen atom, a —NH group, a —N(CH 3 ) group, or a group of the formula (II),

B is a carboxylic acid group of the formula —COOH, a sulfonic acid group of the formula —SO 3 H, the sodium, potassium, ammonium or monoalkanolammonium or trialkanolammonium salts thereof, and the deprotonated form —COO − and —SO 3 − thereof, and

x and y independently of one another are an integer from 1 to 8,

(C) 0.01 to 12.0 wt % of a fatty acid ethanolamide ethoxylate of the formula (XI),

in which m is an integer from 3 to 50 and R 1 is C 7 to C 21 alkyl or alkenyl, and

(G) water.

2. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a fatty acid isethionate of the formula (III),

wherein M is H, sodium, potassium, or ammonium and

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

3. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a fatty acid tauride or a sodium, potassium, or ammonium salt thereof.

4. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a fatty acid methyltauride of the formula (IV),

wherein M is H, sodium, potassium, or ammonium and

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

5. The aqueous pigment preparation as claimed in claim 1 ,

wherein component (B) is a fatty acid glycinate of the formula (V),

wherein M is H, sodium, potassium, or ammonium and

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

6. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a fatty acid amidocarboxylic acid or the salt thereof according to formula (VI),

wherein M is H, sodium, potassium, ammonium, monoalkanolammonium, or trialkanolammonium and

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

7. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a sarcosine or sarcoside of the formula (VII), and is present either in acidic form as sarcosines or as neutralized sarcosides

wherein M is H, sodium, potassium, or ammonium and

R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

8. The aqueous pigment preparation as claimed in claim 1 , wherein component (B) is a betaine of the formula (VIII),

wherein R is a linear or branched alkyl or alkenyl radical having 7 to 21 carbon atoms.

9. The aqueous pigment preparation as claimed in claim 8 , comprising 1 to 12 wt % of a fatty acid alkanolamide ethoxylate of the formula (XI)

wherein R 1 is C 7 to C 21 alkyl or alkenyl.

10. The aqueous pigment preparation as claimed in claim 1 , comprising 1 to 8 wt % of a fatty acid condensation product of the formula (I).

11. The aqueous pigment preparation as claimed in claim 1 , comprising 10 to 75 wt % of water.

12. The aqueous pigment preparation as claimed in claim 1 , wherein R and R 1 independently of one another comprise 11 to 19 carbon atoms.

13. The aqueous pigment preparation as claimed in claim 1 , which has a viscosity of 10 to 10 000 mPas, determined with a cone/plate viscometer at a shear rate of 1/60 sec −1 .

14. The aqueous pigment preparation as claimed in claim 1 , further, comprising (D) 0-8.0 wt % of clay mineral thickeners based on natural or alkali-activated montmorillonite phyllosilicate minerals.

15. The aqueous pigment preparation as claimed in claim 1 , further comprising (E) 0-20.0 wt % of inorganic fillers.

16. The aqueous pigment preparation as claimed in claim 1 , further comprising (F) 0 to 30 wt % of further auxiliaries customary for producing an aqueous pigment preparation and selected from the group consisting of wetting agents, humectants, solvents, defoamers, rheological additives, preservatives, buffer substances, and pH regulators.

17. The aqueous pigment preparation as claimed in claim 16 , comprising up to 15 wt % of at least one humectant or solvent selected from the group consisting of glycol ethers having a 200 to 20 000 g/mol number-average molecular weight.

18. The aqueous pigment preparation as claimed in claim 16 , comprising up to 2 wt % of defoamers.

19. The aqueous pigment preparation as claimed in claim 16 , comprising up to 1 wt % of an in-can preservative.

20. A coating material, varnish, or comprising at least one aqueous pigment preparation as claimed in claim 1 .

21. A process for printing two-dimensional sheet structures comprising the steps of adding at least one aqueous pigment preparation to a printing ink and applying the ink to the two-dimensional sheet structure.