Dispersing agent from renewable raw materials for binding agent-free pigment preparations

Patent metadata

Field	Value
Publication number	US-9303143-B2
Application number	US-201314434043-A
Country	US
Kind code	B2
Filing date	Sep 4, 2013
Priority date	Oct 9, 2012
Publication date	Apr 5, 2016
Grant date	Apr 5, 2016

Abstract

The invention relates to aqueous, binding agent-free pigment preparations, containing: (A) 1.0-to 75.0 wt. % of at least one organic or inorganic white or colored pigment or a mixture of different organic and inorganic white or colored pigments; (B) 0.01 to 8.0 wt. % of at least one phosphatide of formula (I), wherein R represents a group containing carbon, hydrogen and oxygen atoms and optionally nitrogen and sulfur atoms; 0.01 to 12.0 wt. % of a fatty acid alkanol amide ethoxylate of the formula (II), wherein a represents an integer between 3 and 50, R 3 represents C 7- to C 21- alkyl or -alkenyl; and (G) water.

First claim

The invention claimed is:

1. An aqueous, binder-free 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 phosphatide of the formula (I),

 in which
R is an aliphatic radical comprising a total of up to 50 atoms selected from the group consisting of carbon, hydrogen, and oxygen atoms, and optionally nitrogen and sulfur atoms,

(C) 0.01 to 12.0 wt % of a fatty acid alkanolamide ethoxylate of the formula (II)

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

and
(G) water.

2. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein component (B) is a phosphatidylcholine of the formula (III)

in which
R 1 is a linear, saturated or unsaturated aliphatic C 8 to C 18 radical and
R 2 is a linear, saturated or unsaturated aliphatic C 8 to C 18 radical identical to or different from R 1 .

3. The aqueous, binder-free pigment preparation as claimed in claim 2 , wherein the radicals R, R 1 CO and R 2 CO are acyl radicals derived from lauric acid, myristic acid, palmitic acid, stearic acid, oleic acid, linoleic acid, linolenic acid, or mixtures thereof.

4. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein component (C) is a fatty acid alkanolamide ethoxylate of the formula (II),

in which a is an integer from 4 to 50 and R 3 is C 11 to C 19 alkyl or alkenyl.

5. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 1 to 7 wt % of a phosphatide of the formula (I).

6. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 1 to 10 wt % of a fatty acid alkanolamide ethoxylate of the formula (II).

7. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 10 to 75 wt % of water.

8. The aqueous, binder-free pigment preparation as claimed in claim 1 , having a viscosity of 10 to 10 000 mPas, determined with a cone/plate viscometer at a shear rate of 1/60 sec-1.

9. The aqueous, binder-free pigment preparation as claimed in claim 1 , further comprising
(D) 0.01-8.0 wt % of clay mineral thickeners based on natural or alkali-activated montmorillonite phyllosilicate minerals.

10. The aqueous, binder-free pigment preparation as claimed in claim 1 , further comprising
(E) 0.01-20.0 wt % of inorganic fillers.

11. The aqueous, binder-free pigment preparation as claimed in claim 1 , further comprising
(F) 0.01 to 30 wt % of other auxiliaries customary for producing aqueous, binder-free pigment preparations and selected from the group consisting of wetting agents, moisture retainers, solvents, defoamers, rheological additives, preservatives, buffer substances, and pH regulators.

12. The aqueous, binder-free pigment preparation as claimed in claim 11 , comprising up to 15 wt % of at least one moisture retainer or solvent, selected from the group consisting of glycerol and from glycol ethers having 200 to 20 000 g/mol number-average molecular weight.

13. The aqueous, binder-free pigment preparation as claimed in claim 11 , comprising up to 2 wt % of defoamers.

14. The aqueous, binder-free pigment preparation as claimed in claim 11 , comprising up to 1 wt % of an in-can preservative.

15. A process for coloring a macromolecular material, coating material, paint, or ink, comprising the step of adding at least one aqueous, binder-free 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 phosphatide of the formula (I),

 in which
R is an aliphatic radical comprising a total of up to 50 atoms selected from the group consisting of carbon, hydrogen, and oxygen atoms, and optionally nitrogen and sulfur atoms,

(C) 0.01 to 12.0 wt % of a fatty acid alkanolamide ethoxylate of the formula (II)

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

and
(G) water to the macromolecular material, coating material, paint or ink.

16. A macromolecular material, coating material, paint or ink, comprising at least one aqueous, binder-free pigment preparation as claimed in claim 1 .

17. A process for printing a two-dimensional sheet structure comprising the step of contacting the two-dimensional sheet structure with at least one macromolecular material, coating material, paint or ink, as claimed in claim 16 .

Assignees

• Ahrens Hendrik
• Clariant Int Ltd

Inventors

• Ahrens Hendrik

Classifications

• C09B67/009

  polymeric dispersing agent · CPC title

• C08K5/52

  Phosphorus bound to oxygen only · CPC title

• C09D11/00

  Inks · CPC title

• C08K5/23

  Azo-compounds · CPC title

• C08K5/521

  Esters of phosphoric acids, e.g. of H3PO4 · CPC title