Binding agent free-pigment preparations containing phosphoric acid ester
View Patent ↗Phosphoric acid ester as dispersing agents in binding agent free-pigment preparations. The invention relates to aqueous, binding agent free-pigment preparations, containing (A) 1.0-75.0 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 phosphoric acid ester of formula (IV), wherein R represents a linear or cross-branched, saturated or unsaturated C 8 to C 18- aliphatic hydrocarbon group, M represents a hydrogen atom or a sodium, potassium or ammonium ion, n is an integer of between 0-20 and m is an integer of between 0-20, (C) 0.01-12.0 wt.-% of a non-ionic surfactant which is a fatty acid ethanol amide ethoxylate of formula (V), wherein a represents an integer of between 3-50, and R 1 represents C 7- -C 21- alkyl or -alkenyl and (G) water.
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 phosphoric ester of the formula (IV),
in which
R is a linear or branched, saturated or unsaturated C 8 to C 18 aliphatic hydrocarbon radical,
M is a hydrogen atom or a sodium, potassium, or ammonium ion,
n is an integer from 0 to 20, and
m is an integer from 0 to 20,
(C) 0.01 to 12.0 wt % of a nonionic surfactant, which is a fatty acid ethanolamide ethoxylate of the formula (V),
in which a 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, binder-free pigment preparation as claimed in claim 1 , wherein R is an alkyl or alkenyl radical.
3. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein m and n are simultaneously zero.
4. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein n is zero and m is a number from 1 to 20.
5. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein component (B) is a compound alkoxylated blockwise on the alcohol residue R—O first with 1 to 20 mol of propylene oxide and then with 1 to 20 mol of ethylene oxide.
6. The aqueous, binder-free pigment preparation as claimed in claim 1 , wherein component (C) comprises ethoxylated C 8 to C 22 fatty acid alkanolamides having 1 to 100 ethoxy groups and a C 2 to C 6 alkanol radical.
7. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 1 to 12 wt % of a fatty acid alkanolamide ethoxylate of the formula (V).
8. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 1 to 7 wt % of a phosphoric ester of the formula (IV).
9. The aqueous, binder-free pigment preparation as claimed in claim 1 , comprising 10 to 75 wt % of water.
10. The aqueous, binder-free 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.
11. The aqueous, binder-free pigment preparation as claimed in claim 1 , further comprising
(D) 0.01-8.0 wt % of clay mineral thickeners selected from the group consisting of natural or alkali-activated montmorillonite phyllosilicate minerals.
12. The aqueous, binder-free pigment preparation as claimed in claim 1 , further comprising
(E) 0.01-20.0 wt % of inorganic fillers.
13. 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.
14. The aqueous, binder-free pigment preparation as claimed in claim 13 , comprising up to 15 wt % of at least one moisture retainer or solvent, selected from the group consisting of glycol ethers having 200 to 20 000 g/mol number-average molecular weight.
15. The aqueous, binder-free pigment preparation as claimed in claim 13 , comprising up to 2 wt % of defoamers.
16. The aqueous, binder-free pigment preparation as claimed in claim 13 , comprising up to 1 wt % of an in-can preservative.
17. A process for coloring a macromolecular material, coating material, paint, or, 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 phosphoric ester of the formula (IV),
in which
R is a linear or branched, saturated or unsaturated C 8 to C 18 aliphatic hydrocarbon radical,
M is a hydrogen atom or a sodium, potassium, or ammonium ion,
n is an integer from 0 to 20, and
m is an integer from 0 to 20,
(C) 0.01 to 12.0 wt % of a nonionic surfactant, which is a fatty acid ethanolamide ethoxylate of the formula (V),
in which a is an integer from 3 to 50 and R 1 is C 7 to C 21 alkyl or alkenyl, and
(G) water to the macromolecular material, coating material, paint, or ink.
18. A macromolecular material, coating material, paint or ink, comprising at least one aqueous, binder-free pigment preparation as claimed in claim 1 .
19. 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 18 .