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Dispersing and emulsifying resins comprising polyether

A technology for dispersing resins and resins, which is applied in latex paints, organic dyes, transportation and packaging, and can solve problems such as insufficient viscosity consistency, insufficient paste stability, and low filling degree

Inactive Publication Date: 2010-03-10
EVONIK DEGUSSA GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] However, the use of said products also leads to various disadvantages: when they are used in pigment pastes, high levels of dispersing additives are often required; the level of coloring achievable with pastes is disappointingly low; insufficient stability of pastes, and thus insufficient consistency of their viscosity; and flocculation and agglomeration cannot be completely avoided
It is often necessary to add high levels of dispersing additives to suppress the following phenomena: agglomeration occurs; the degree of filling that can be achieved is disappointingly low; the stability of the dispersion and the consistency of its viscosity are often insufficient; flocculation and agglomeration cannot always Avoid, and thus there may be significant gaps and flow defects and surface defects

Method used

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  • Dispersing and emulsifying resins comprising polyether
  • Dispersing and emulsifying resins comprising polyether
  • Dispersing and emulsifying resins comprising polyether

Examples

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Embodiment

[0096] The invention is illustrated in more detail by the following examples.

[0097] Reactants: Carbonyl-hydrogenated ketone-aldehyde resins

[0098] The preparation method of the ketone-aldehyde resin of described carbonyl-hydrogenation is as follows:

[0099] Preparation of base resins based on acetophenone and formaldehyde for further hydrogenation

[0100] Add 1200g of acetophenone, 220g of methanol, 0.3g of benzyltributylammonium chloride, and 360g of 30% aqueous formaldehyde into the container and stir evenly. Then, while stirring, 32 g of a 25% sodium hydroxide aqueous solution was added. Then, at 80 to 85° C., within 90 minutes, 655 g of a 30% formaldehyde solution was added while stirring. After stirring for 5 hours at reflux temperature, the stirrer was switched off and the aqueous phase was separated from the resinous phase. The crude product was washed with water to which acetic acid had been added, and the washing was continued until a molten sample of the r...

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Abstract

The invention relates to dispersing resins for solid matters, wherein the resins can be obtained by the partial or complete reaction of the hydroxyl groups of carbonyl-hydrated ketone-aldehyde resinswith one or more oxiranes and, optionally, subsequent complete or partial esterification with organic and / or inorganic acids.

Description

technical field [0001] The present invention relates to innovative dispersing resins, also to their preparation, and also to the use of dispersing solids. Background technique [0002] To disperse solids (e.g., fillers, dyes, or pigments) in a liquid medium, it is common practice to use dispersants to achieve effective dispersion of solids, reduce the mechanical shear force required for dispersion, and at the same time enable a high degree of filling . Dispersants can help break up agglomerates, as surface active materials, dispersants wet and / or coat the surface of the particles to be dispersed and stabilize these particles against unwanted reagglomeration. [0003] In the preparation of paints, varnishes, printing inks, and other coating materials, dispersants facilitate the incorporation of solids, such as fillers and pigments, for example, as important formulation components that contribute to the appearance of the system and fundamental determinants of physical and ch...

Claims

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Application Information

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IPC IPC(8): C09D5/02C09B67/00B01F17/42B01F17/52C09K23/42C09K23/52
CPCC08G65/327C08G65/2603C09D17/00B01F17/0028C08G65/08C09B67/009C09D7/02C09D7/45C09K23/00C09K23/42C08G8/18C08G8/08C08J3/02C09D5/02
Inventor P·卡瓦莱罗E·埃塞尔伯恩P·格勒克纳M·勒布斯T·法伊特
Owner EVONIK DEGUSSA GMBH
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