Addition compound suitably used as wetting dispersant and preparation method thereof

A technology of addition compounds, wetting and dispersing agents, used in chemical instruments and methods, chemical/physical processes, transportation and packaging, etc., can solve the problems of high viscosity and thixotropy, low viscosity, poor fluidity, etc. The effect of enhanced ability, excellent comprehensive dispersion performance, and enhanced steric hindrance ability

Active Publication Date: 2019-04-23
博邦新材料科技(广州)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned dispersant can be used as a dispersion of some solid particles, when in a pigment or coating ink system, because the above-mentioned system usually has a higher solid content, it is required to contain

Method used

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  • Addition compound suitably used as wetting dispersant and preparation method thereof
  • Addition compound suitably used as wetting dispersant and preparation method thereof
  • Addition compound suitably used as wetting dispersant and preparation method thereof

Examples

Experimental program
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Example Embodiment

[0036] Example 1

[0037] Synthesis of polyether-ethyl silicate branch

[0038] Polyether-ethyl silicate branch 1

[0039] Under the protection of nitrogen, 208.33 parts of ethyl orthosilicate 28, 2325 parts of polyethylene glycol monomethyl ether (Mn=750) were added at room temperature to the equipped with thermometer, top stirrer, gas inlet and fractional distillation Place the four-necked flask in the condenser of the device and homogenize it. Turn on the heating device, set the reaction temperature to 120°C, and turn on the stirring at the same time, set the stirring speed to 200rpm. When the reaction mixture reaches about 120°C, the reaction starts, and the transesterification reaction product ethanol is fractionated from the fractionator, collect the fractions, and maintain the temperature to react 1h, then heat the mixture to 160°C and keep it at this temperature to collect the fractions, maintain the temperature for 1h, and finally heat the mixture to 190°C and keep it at t...

Example Embodiment

[0058] Example 2: Dispersion of particulate solid and its thixotropic properties

[0059] The dispersing aid 1, 5, 8 (solid content 50%) of the present invention or the commercially available dispersing aid BYK110 (solid content 50%) as shown in the following table 2 are respectively combined with short oil alkyd resin (solid content) 60%), titanium dioxide in powder form, and propylene glycol methyl ether acetate were mixed, and dispersed with glass beads in a Dispermat disperser for 1 hour to obtain particle solid dispersions 1, 2, 3 and control dispersions.

[0060] Table 2

[0061]

[0062]

[0063] Note: The viscosity of the dispersion of particulate solids is measured using Brookfield LVDV-I Prime viscometer with No. 3 spindle.

[0064] The above results indicate that the solid dispersion of inorganic pigment particles containing the dispersant of the present invention exhibits lower viscosity and thixotropy, and exhibits more excellent dispersibility.

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Abstract

The invention relates to an addition compound and a preparation method for the addition compound and a wetting dispersant containing the addition compound used in coating ink. The addition compound isa branched silicon-containing polymer prepared by a monomer mixture through an ester exchange reaction. The branched silicon-containing polymer dispersing auxiliary has a structure as shown in the following formula. An organic silicon component is introduced into the branched polymer, so wetting ability of the dispersant to solid particles is greatly reinforced through a silicon-containing component, and steric hindrance capacity of a branched polyether component to the solid particles is reinforced, an amino residue is bonded and anchored to the surface of the solid particles. While the branched polymer dispersing auxiliary is used for dispersing the solid particles, excellent comprehensive dispersing performance can be provided for an obtained dispersoid.

Description

technical field [0001] The present invention relates to a branched polymer prepared from a monomer mixture by transesterification, which can be used as a wetting and dispersing agent for pigments and fillers. The invention also relates to processes for the preparation of said substances. Background technique [0002] Solid particles are widely used as coloring or filling materials in coatings, adhesives, inks, paints, colorants and other industries. In particular, particulate solids such as pigments and fillers are an important component of coatings. Not only can they impart good hiding power and rich color to the coating, but they can additionally provide coating compositions with improved physical and chemical properties, including improved chemical resistance and thermal stability. [0003] Particulate solids used as pigments or fillers generally have relatively small particle sizes, eg micron or even nanometer particle sizes. If the incorporation of solid particles is...

Claims

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Application Information

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IPC IPC(8): C08G65/333C08G65/336B01F17/54B01F17/42C09K23/42C09K23/54
CPCC08G65/33317C08G65/33396C08G65/336C09K23/16
Inventor 王金孙胜利
Owner 博邦新材料科技(广州)有限公司
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