Universal pigment preparation

Patent metadata

Field	Value
Publication number	US-10287448-B2
Application number	US-201715622657-A
Country	US
Kind code	B2
Filing date	Jun 14, 2017
Priority date	Jul 8, 2016
Publication date	May 14, 2019
Grant date	May 14, 2019

Abstract

A universal pigment preparation including a flocculation-stabilizing medium including (a1) reaction products of di- or polycarboxylic acids or hydroxycarboxylic acids with di- or polyols, and (a2) reaction products of alkylene oxides with alkoxylatable compounds, and at least one pigment. Paints, varnishes, printing inks, coating materials, floor coatings, potting compounds and filling compounds may be made using the universal pigment preparation.

First claim

The invention claimed is:

1. A universal pigment preparation comprising
a flocculation-stabilizing medium comprising
(a1) reaction products of di- or polycarboxylic acids or hydroxycarboxylic acids with di- or polyols,
and
(a2) reaction products of alkylene oxides with alkoxylatable compounds, wherein the reaction products (a2) are prepared by an alkoxylation reaction of alkoxylatable compounds of the formula (II)

where
R 3 is a linear or branched, saturated or mono- or polyunsaturated, aliphatic, cycloaliphatic or aromatic hydrocarbyl radical having 2 to 50 carbon atoms, which may be interrupted by heteroatoms selected from the group consisting of oxygen, nitrogen and sulphur,
R 4 is a linear or branched, saturated or mono- or polyunsaturated aliphatic, cycloaliphatic or aromatic hydrocarbyl radical which may be interrupted by heteroatoms selected from the group consisting of oxygen, nitrogen and sulphur and may be substituted by OH groups, having 1 to 22 carbon atoms,
a=2 to 6,
b=1 to 4, wherein the sum total of a and b=3 to 6, with alkylene oxides
and
at least one pigment.

2. The universal pigment preparation according to claim 1 , wherein the weight ratio of flocculation-stabilizing medium to pigment is 95:5 to 5:95.

3. The universal pigment preparation according to claim 1 , wherein the weight ratio of reaction products (a1) to reaction products (a2) is 10:90 to 90:10.

4. The universal pigment preparation according to claim 1 , wherein the di- or polycarboxylic acids are saturated and/or unsaturated and/or aromatic di- or polycarboxylic acids and the anhydrides or esters thereof.

5. The universal pigment preparation according to claim 1 , wherein the di- or polycarboxylic acids are mixtures of saturated and α,β-unsaturated di- or polycarboxylic acids in a molar ratio of 80:20 to 40:60.

6. The universal pigment preparation according to claim 1 , wherein the di- or polycarboxylic acids are citraconic, fumaric, itaconic, maleic and/or mesaconic acid, phthalic acid, isophthalic acid, terephthalic acid, cyclohexane-1,4-dicarboxylic acid, malonic acid, succinic acid, glutaric acid, methyltetra- and methylhexahydrophthalic acid, hexahydrophthalic acid, tetrahydrophthalic acid, dodecanedioic acid, pimelic acid, adipic acid, azelaic acid, suberic acid, sebacic acid, pyromellitic acid and trimellitic acid or the anhydrides or esters thereof or mixtures thereof.

7. The universal pigment preparation according to claim 1 , wherein the di- or polyols are polyethylene glycols of the formula (I)

with
x=1, 2, 3 or 4 to 10,
wherein in the case that x=1 the R 1 and R 2 radicals are hydrogen,
in the case that x=2, 3 or 4 to 10 the R 1 radical is a linear or branched, saturated or mono- or polyunsaturated aliphatic, cycloaliphatic or aromatic hydrocarbyl radical having 2 to 50 carbon atoms, which may be interrupted by heteroatoms oxygen, nitrogen or sulphur, and R 2 is a hydrogen, where the segments attached to R 1 in a number of x may be of the same or different structure,
m=0, 1, 2 or 3 to 100,
n=0, 1, 2 or 3 to 100, and
wherein the product x*(m+n)=2, 3 or 4 to 100.

8. The universal pigment preparation according to claim 7 , wherein the repeat units (—C 2 H 4 —O—) m and (—C 3 H 6 —O—) n are arranged in blocks, in random distribution or in a gradient distribution in the polymer chain.

9. The universal pigment preparation according to claim 7 , wherein the polyalkylene glycols are polypropylene glycols or polypropylene-polyethylene glycols having a number-average molar mass of 100 to 2000 g/mol.

10. The universal pigment preparation according to claim 1 , wherein the reaction products (a1) have an OH number between 1 and 450 mg KOH/g.

11. The universal pigment preparation according to claim 10 , wherein the reaction products (a1) have a theoretical double bond content of 0 to 3 mmol/g.

12. The universal pigment preparation according to claim 1 , wherein the alkoxylatable compounds are diols, polyols, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, polyetherols, hexanediol, butanediol, neopentyl glycol, hexylene glycol, ricinoleic acid, hydroxystearic acid and polyhydroxystearic acid, glycerol, polyglycerol, pentaerythritol, trimethylolpropane, and poly-OH-functional phenols.

13. The universal pigment preparation according to claim 1 , wherein the alkylene oxides are selected from the group consisting of ethylene oxide, propylene oxide, butylene oxide and styrene oxide.

14. The universal pigment preparation according to claim 1 , wherein the reaction products (a2) have a weight-average molar mass of 300 to 15 000 g/mol.

15. The universal pigment preparation according to claim 1 , wherein the pigments are organic or inorganic pigments or carbon black pigments.

16. The universal pigment preparation according to claim 1 , comprising
0.5% to 85.5% by weight of reaction products (a1),
0.5% to 85.5% by weight of reaction products (a2) and
5% to 95% by weight of at least one pigment selected from the group of the organic, inorganic or carbon black pigments.

17. The universal pigment preparation according to claim 16 , wherein dispersing additives and/or further auxiliary components are added.

18. The universal pigment preparation according to claim 17 , wherein the volatile organic component is <20% by weight.

19. The universal pigment preparation according to claim 18 , wherein it has a free-flowing consistency at room temperature.

20. The universal pigment preparation according to claim 19 , wherein it has a viscosity at 25° C. and 100 l/s of <5000 mPas.

21. The universal pigment preparation according to claim 20 , wherein it does not include any organic solvent having a boiling point below 250° C. or any water.

22. The process for producing the universal pigment preparation according to claim 1 , wherein the reaction products (a1) and the reaction products (a2) are first produced and then mixed, with no addition of volatile organic solvents and/or water, then the pigments are mixed in.

Assignees

• Evonik Degussa Gmbh

Inventors

• Roland Katrin
• Duerr Christoph
• Schubert Frank
• Momper David
• Skotarczak Aline
• Blei Marco
• Ewald Michael

Classifications

• C09D17/003 Primary

  containing an organic pigment (process features in the making of dye stuff preparations C09B67/00) · CPC title

• C09D17/007

  Metal oxide · CPC title

• C09B67/0089

  non ionic dispersing agent, e.g. EO or PO addition products · CPC title

• C09D175/06

  from polyesters · CPC title

• C09B67/009

  polymeric dispersing agent · CPC title