Comb-type alkylphenol polyoxyethylene ether aqueous dispersant and preparation method thereof

A technology of alkylphenol polyoxyethylene ether and water-based dispersant, which is applied in chemical instruments and methods, bulk chemical production, dissolution, etc. It can solve the problems that cannot meet the dispersion and stability of pigments, reduce surface tension, etc., and achieve excellent coloring Strength and water resistance, excellent emulsification, reduced floating and blooming effect

Active Publication Date: 2021-11-12
中山市钧纬新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The above-mentioned Chinese patents and public reports are mainly dimers or trimers, and the main surface is in surface activity, focusing on emulsification and wetting performance, reducing surface tension, which cannot meet the dispersion and stability of pigments.

Method used

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  • Comb-type alkylphenol polyoxyethylene ether aqueous dispersant and preparation method thereof
  • Comb-type alkylphenol polyoxyethylene ether aqueous dispersant and preparation method thereof
  • Comb-type alkylphenol polyoxyethylene ether aqueous dispersant and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A comb-type alkylphenol polyoxyethylene ether aqueous dispersant, the preparation steps of which are as follows:

[0028] a), in parts by weight, in a reaction kettle equipped with stirring, reflux water separation, vacuum cooling, and dropping device, add 1100.0 parts of n-nonylphenol and 2.5 parts of p-toluenesulfonic acid catalyst, in N 2 Under protection, start stirring and raise the temperature to 120°C, start to add 328.5 parts of 37% formaldehyde dropwise, finish the drop within 2 hours, raise the temperature to 130°C, add 20.0 parts of D40 dearomatized solvent oil according to the viscosity of the reaction material after reacting for 4 hours, and then raise the temperature to 140°C Continue to react for 2h, lower the temperature to 120°C, turn off the N 2 Open a vacuum and reduce pressure to extract water and unreacted formaldehyde to obtain pentameric nonylphenol;

[0029] b), add pentamer nonylphenol, 7.5 parts of catalyst KOH and 25.0 parts of D40 dearomatiz...

Embodiment 2

[0032] A comb-type alkylphenol polyoxyethylene ether aqueous dispersant, the preparation steps of which are as follows:

[0033] a), in parts by weight, in a reactor equipped with stirring, reflux water diversion, vacuum cooling, and dripping device, add 586.0 parts of n-decylphenol, 2.0 parts of condensation solid acid catalyst, in N 2 Under protection, start stirring and raise the temperature to 120°C, start to add 165.0 parts of 37% formaldehyde dropwise, finish the drop within 2 hours, raise the temperature to 130°C, add 12.5 parts of D40 dearomatized solvent oil according to the viscosity of the reaction material after reacting for 4 hours, and then raise the temperature to 140°C Continue to react for 2h, lower the temperature to 120°C, turn off the N 2 Open vacuum and reduce pressure to extract water and unreacted formaldehyde to obtain pentameric decylphenol;

[0034] b), add pentameric decylphenol, 6.0 parts of catalyst KOH and 15.0 parts of D40 dearomatization solven...

Embodiment 3

[0037] A comb-type alkylphenol polyoxyethylene ether aqueous dispersant, the preparation steps of which are as follows:

[0038] a), in parts by weight, in a reactor equipped with stirring, reflux water separation, vacuum cooling, and dropping device, add 787.2 parts of n-dodecylphenol and 3.0 parts of p-toluenesulfonic acid catalyst, N 2 Under protection, start stirring and raise the temperature to 120°C, start to add 197.5 parts of 37% formaldehyde dropwise, finish the drop within 2 hours, raise the temperature to 130°C, add 16.0 parts of D40 dearomatization solvent oil according to the viscosity of the reaction material after reacting for 6 hours, and then raise the temperature to 140°C Continue to react for 2h, lower the temperature to 120°C, turn off the N 2 Open a vacuum and reduce pressure to extract water and unreacted formaldehyde to obtain pentameric dodecylphenol;

[0039] b), add pentamer dodecylphenol, catalyst KOH 9.0 parts and D40 dearomatization solvent oil 2...

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Abstract

The invention relates to a comb-type alkylphenol polyoxyethylene ether aqueous dispersant which is nonionic, the molecular structure of the dispersant contains an anchoring group and a hydrophilic group, the anchoring group is an alkylphenol pentamer chain segment, the hydrophilic group is a polyoxyethylene ether chain segment, and the molar ratio of the anchoring group to the hydrophilic group is 1:(60-75). The invention also provides a preparation method of the comb-type alkylphenol polyoxyethylene ether aqueous dispersant. The comb-type alkylphenol polyoxyethylene ether water-based dispersant prepared by the invention has excellent emulsifying, wetting and dispersing properties, excellent tinting strength and water resistance, stable hue and reduced flooding and floating, and can be used for preparing stable high-solid low-viscosity water-based pigment concentrated slurry. The dispersant can be used for dispersing organic pigments in a resin-free system, especially carbon black and phthalocyanine pigments which are difficult to disperse.

Description

technical field [0001] The invention relates to the preparation of a water-based dispersant, in particular to a comb-type alkylphenol polyoxyethylene ether water-based dispersant and a preparation method thereof, belonging to the technical field of surfactant synthesis. Background technique [0002] Emulsifiers containing long-chain alkylphenol structures have good wetting, penetrating, emulsifying, dispersing, solubilizing and washing effects, and are mainly used as emulsifiers on pesticides, textile auxiliaries, defoamers, detergents, and dispersants , emulsifiers, softeners, dyeing auxiliaries, fiber oils, crude oil demulsifiers, etc., are widely used in paints, water-based color pastes, detergents, daily necessities for personal care, textiles, papermaking, petroleum, metallurgy, pesticides, pharmaceuticals, printing , synthetic rubber, water-based emulsion, plastics and other industries. At present, alkylphenol polyoxyethylene ethers include nonylphenol polyoxyethylene...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/42C08G65/28C09K23/42
CPCC08G65/2612C08G65/2696Y02P20/54
Inventor 许钧强方子军
Owner 中山市钧纬新材料科技有限公司
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