Pigment dispersing agent composite containing phosphate ester structure and preparation method thereof

A pigment dispersant and phosphate-containing technology, which is applied in the direction of phosphorus organic compounds and pigment pastes, can solve the problems of difficult dispersion, decreased tinting power, long grinding time, etc., and achieve low viscosity, high stability, and high tinting power Effect

Active Publication Date: 2012-07-25
SUZHOU SUNMUN TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the water-based color paste with resin system has better stability, the higher viscosity often leads to high requirements for equipment power and longer grinding time during the dispersion and grinding process of the color paste, which increases the production cost; The water-based color paste products are difficult to disperse through simple stirring in water-based paints, inks and other application systems, which increases the difficulty of application; the most important thing is that the resin in the water-based color paste is often mixed with downstream products such as paints, inks, and paper products. The poor compatibility of other components in the water-based color paste will cause a significant drop in tinting strength and precipitation, which seriously limits the general performance of the water-based color paste
Water-based color pastes without resin systems have obvious advantages in reducing processing costs, improving versatility and easy dispersibility. However, due to the lack of stabilization provided by resins, water-based color pastes without resins often need to be thickened by adding bentonite, cellulose, etc. The introduction of thickeners cannot fundamentally solve the problems of high processing cost, difficulty in dispersing and poor versatility of water-based colorants

Method used

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  • Pigment dispersing agent composite containing phosphate ester structure and preparation method thereof
  • Pigment dispersing agent composite containing phosphate ester structure and preparation method thereof
  • Pigment dispersing agent composite containing phosphate ester structure and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] 0.2 moles of 2-benzylphenol, 3 moles of oxirane and 0.5 gram of potassium hydroxide in the autoclave, after reacting for 1 hour under the conditions of 80°C and 0.8MPa, the product obtained was under nitrogen protection, and 0.06 moles of phosphorus pentoxide were reacted for 2 hours at 30°C to 45°C to obtain dispersant A-1;

[0029] 0.4 moles of 2,4,6-tris(1-toluene-1-phenylethyl)phenol, 2.4 moles of ethylene oxide and 0.3 grams of sodium hydroxide were reacted in an autoclave at 60°C and 0.2MPa After 1 hour, the obtained product was reacted with 0.2 mole of phosphorus pentoxide under the condition of 50°C to 65°C for 2 hours under the protection of nitrogen to obtain dispersant A-2;

[0030] 0.2 moles of 3-phenethylphenol, 6 moles of ethylene oxide and 0.8 grams of sodium hydroxide were reacted for 1 hour at 120° C. and 1.0 MPa in an autoclave, and the resulting product was under nitrogen protection. React with 0.05 mole of phosphorus pentoxide for 1 hour under the c...

Embodiment 2

[0033] 0.2 moles of 3-phenethylphenol, 2 moles of ethylene oxide and 0.5 grams of potassium hydroxide were reacted for 1 hour at 80° C. and 0.5 MPa in an autoclave, and the resulting product was protected under nitrogen. React with 0.06 moles of phosphorus pentoxide at 50°C to 65°C for 2 hours to obtain dispersant A-4;

[0034] 0.5 moles of 2,4,6-tris(1-toluene-1-phenylethyl)phenol, 10 moles of ethylene oxide and 1.2 grams of sodium hydroxide in an autoclave under the conditions of 60°C and 0.4MPa After reacting for 1 hour, the obtained product was reacted with 0.2 mole of phosphorus pentoxide under the condition of 40° C. to 55° C. for 1.5 hours under the protection of nitrogen to obtain dispersant A-5.

[0035] After mixing the above-mentioned dispersants A-4 and A-5 uniformly at a mass ratio of 1:2, adjust the pH value to 9.0 with 30wt.% potassium hydroxide aqueous solution to obtain a pigment dispersant composition B-2 containing a phosphate ester structure .

Embodiment 3

[0037] Prepare dispersant A-3 and A-4 according to the method described in embodiment 1 and 2 respectively, and after A-3 and A-4 are mixed with the mass ratio of 3: 1, adjust pH with 30wt.% potassium hydroxide aqueous solution The value was 9.5, and the pigment dispersant composition B-3 containing a phosphate ester structure was obtained.

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Abstract

The invention discloses a pigment dispersing agent composite containing a phosphate ester structure and a preparation method thereof. The preparation method comprises the following steps of: selecting at least two of 2-benzylphenol, 3-phenethyl phenol and 2, 4, 6-tri (1- methylbenzene-1- phenyl ethyl) phenol to be reacted with ethylene oxide, then reacting a reaction product with phosphorus pentoxide to obtain different pigment dispersing agent compounds containing the phosphate ester structure, mixing the different pigment dispersing agent compounds containing the phosphate ester structure, and adjusting the pH value of a final product to obtain the pigment dispersing agent composite containing the phosphate ester structure. The phosphate ester dispersing agent composite can be used for preparing a water-based color paste without containing a resin and a thickening agent and with high tinting strength, high stability and low viscosity.

Description

technical field [0001] The invention relates to a pigment dispersant composition and a preparation method thereof, in particular to a pigment dispersant composition containing a phosphoric acid ester structure and a preparation method thereof. The pigment dispersant composition is suitable for aqueous In the color paste system. Background technique [0002] Pigment is an important raw material for coloring in paint, ink, textile, paper and other industries. Most of the pigments exist in the form of powders or granules. The primary particles formed by the pigments are generally less than 1.0 μm. However, due to the interaction force between the particles, the primary particles of the pigments will bond with each other to form aggregates, and the aggregates may be aggregated. It is easy to bond into agglomerates between the body and the primary particles, resulting in a larger particle size of the pigment, and the larger particle size has a very obvious impact on the applicat...

Claims

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Application Information

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IPC IPC(8): C09D17/00C08G65/327C07F9/09
Inventor 吕仕铭杜长森梅成国伍金平周华王小莉
Owner SUZHOU SUNMUN TECH CO LTD
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