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Aqueous pigment preparations

A technology for water-based pigments and pigment preparations, which is used in the field of coloring natural and synthetic materials, and can solve problems such as difficulty in synthesizing dispersants

Active Publication Date: 2010-01-06
CLARIANT INT LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Research so far has shown that it is still extremely difficult to synthesize dispersants equivalent to nonionic novolac systems

Method used

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  • Aqueous pigment preparations
  • Aqueous pigment preparations
  • Aqueous pigment preparations

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0084] Using the following starting materials, the following Synthesis Examples were carried out analogously to Synthesis Example 1:

[0085] Synthesis Example 2

[0086] 210g polyalkylene glycol monomethacrylate (molar mass 350, EO / PO molar ratio 1.7), 79.2g 2-ethylhexyl methacrylate, 41.6g styrene.

[0087] Synthesis Example 3

[0088] 258g polyalkylene glycol monomethacrylate (molar mass 750, EO / PO molar ratio 6.3), 87.5g lauryl methacrylate, 35.8g styrene.

[0089] Synthesis Example 4

[0090] 210g polyalkylene glycol monomethacrylate (molar mass 350, EO / PO molar ratio 1.7), 101.6g lauryl methacrylate, 41.6g styrene.

[0091] Synthesis Example 5

[0092] 363 g polyalkylene glycol monomethacrylate (molar mass 1100, EO / PO molar ratio 10.2, 70% strength in tert-butanol), 117.3 g lauryl methacrylate, 48.0 g styrene.

[0093] Synthesis Example 6

[0094] 452 g polyalkylene glycol monomethacrylate (molar mass 2000, EO / PO molar ratio 20.5, 70% strength in tert-butanol), 80....

Embodiment 2

[0155] 45.0 parts Component (A), C.I. Pigment Red 112

[0156] 8.0 parts of component (B), corresponding to the dispersant of synthetic example 23

[0157] 1.0 parts component (C), moisturizing agent

[0158] 10.0 parts component (E), propylene glycol

[0159] 0.2 part of component (F), preservative

[0160] The remainder of component (G), water

[0161] The pigment preparations have consistently high tinting strength and are stable. It can be incorporated very well into all six white dispersions with easy dispersibility. The rub off test showed no difference in tinting strength in these six cases compared to the back rubbed surface. This formulation proved to flow well and to be storage stable, since it also flowed well after storage at 50° C. for 28 days. The viscosity after production was 278 mPa·s. The formulation is shear stable and does not foam.

Embodiment 3

[0163] 65.0 parts of component (A), C.I. Pigment Yellow 42

[0164] 4.0 parts of component (B), corresponding to the dispersant of synthetic example 11

[0165] 1.0 parts component (C), moisturizing agent

[0166] 15.0 parts component (E), propylene glycol

[0167] 0.2 part of component (F), preservative

[0168] The remainder of component (G), water

[0169] The pigment preparations have consistently high tinting strength and are stable. It can be incorporated very well into the five white dispersions with easy dispersibility; incorporation becomes difficult in the sixth white dispersion, but can be done uniformly. The rub off test showed no difference in tinting strength in these six cases compared to the back rubbed surface. This formulation proved to flow well and to be storage stable, since it also flowed well after storage at 50° C. for 28 days. The viscosity after production was 1765 mPa·s. The formulation is shear stable and does not foam.

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Abstract

The invention relates to aqueous pigment preparations containing (A) at least one organic and / or inorganic pigment, (B) a dispersant of formula (I) or (II), or mixtures of the dispersants of formulas (I) and (II), (C) optionally wetting agents, (D) optionally other surfactants and / or dispersants, (E) optionally one or more organic solvents or one or more hydrotropic substances, (F) optionally other additives used conventionally for the production of aqueous pigment dispersions and (G) water.

Description

technical field [0001] The present invention provides aqueous pigment preparations comprising novel nonionic polymers as dispersants and their use for coloring natural and synthetic materials. Background technique [0002] Dispersants are generally required in order to disperse pigments in a liquid medium. Dispersants can have anionic, cationic, amphoteric or neutral structures. They can be of low molecular nature, or high molecular weight polymers which form architectures of random, alternating, block, comb or star arrangement of the polymerized monomers. [0003] Dispersants are of particular commercial importance, for example for dispersing pigments in the preparation of pigment concentrates for coloring latex paints and varnishes, paints, coatings and printing inks, and for coloring paper, board and fabric coloring. [0004] Pigment preparations comprising ordered polymer structures are also described in the prior art. Examples of these are EP 1 293 523, DE 10 2005 0...

Claims

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Application Information

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IPC IPC(8): C09D17/00C09K23/52
CPCD06P1/6136D06P1/44D06P1/5221C09D11/18D21H21/28D21H19/36D06P5/30C09D15/00C09D11/17D06P1/613C09D5/035D06P1/5242C09D11/037C09D17/001D06P1/5257C09D13/00C09D11/326C09D11/03C09D7/02C09D7/45Y10T428/1324Y10T428/24355C09B67/00
Inventor B·费希纳C·舍费尔A·韦恩德勒
Owner CLARIANT INT LTD
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