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Water-based wetting dispersant

A technology of wetting and dispersing agent and dispersing agent, applied in the direction of coating, etc., can solve the problems of lipophilic group not having carbon chain length, and the bonding of hydrophilic group is not strong, so as to achieve good wetting and dispersing performance and shorten grinding time. Time, effect of stable dispersion system

Inactive Publication Date: 2012-11-14
常州市亚邦亚宇助剂有限公司
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AI Technical Summary

Problems solved by technology

[0003] Traditional dispersants have a good dispersing effect on water-based dispersion systems, but they have limitations: hydrophilic groups are not firmly bonded to the surface of particles with low polarity or non-polarity; lipophilic groups do not have enough The length of the carbon chain cannot produce enough steric hindrance in the aqueous dispersion to play a stabilizing role

Method used

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Embodiment Construction

[0012] A kind of water-based wetting and dispersing agent, comprises sulfonate, sulfate ester salt and polycarboxylate, the weight percent of described sulfonate and sulfate ester salt is 5~15%: 85~95%, and described sulfate ester salt And the weight percent of polycarboxylate is 10~30%: 70~90%.

[0013] The chemical formula of the sulfonate surfactant is R-SO3Na, where the carbon number of R is between 8 and 20. These surfactants are easily soluble in water and do not undergo hydrolysis in acidic solutions. The sulfonate in the present invention is one of dodecylbenzenesulfonate, sodium butylnaphthalenesulfonate and sodium aminobenzenesulfonate. Wherein alkylbenzene sulfonate does not form precipitation with calcium and magnesium ions in hard water, it is acid-resistant and alkali-resistant, and has good detergency, penetration, wetting power and foaming power. The alkylbenzene sulfonate in the present invention Base benzene sulfonate is sodium dodecylbenzene sulfonate, whi...

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Abstract

The invention relates to a water-based wetting dispersant which comprises sulfonate, sulfate and polycarboxylate, wherein weight percentage of sulfonate to sulfate is 5-15%: 85-95%, weight percentage of sulfate to polycarboxylate is 10-30%: 70-90%, sulfate is one selected from the group consisting of sodium dodecyl benzene sulfonate, sodium butylnaphthalenesulfonate and sodium sulfanilate, sulfate is one selected from the group consisting of sodium dodecyl sulfate, sodium alcohol ether sulfate and sodium amine ether sulfate, and polycarboxylate is one selected from the group consisting of polyacrylic acid, polymethacrylic acid and maleic-acrylic acid. The invention is advantaged in that the anionic water-based wetting dispersant with a plurality of surfactants as main components is brought forward and has a stable structure, good dissolvability in water and good wetting dispersibility.

Description

technical field [0001] The invention relates to a coating additive, especially a water-based wetting and dispersing agent. Background technique [0002] A dispersant is a surfactant that has two opposite properties of lipophilicity and hydrophilicity in the molecule. Surfactants have fixed hydrophilic and lipophilic groups, which can be aligned on the surface of the solution and can significantly reduce the surface tension. The molecular structure of surfactants is amphiphilic: one end is a hydrophilic group and the other end is a hydrophobic group; the hydrophilic group is often a polar group, such as carboxylic acid, sulfonic acid, sulfuric acid, amino group or amine base and salt, while the hydrophobic group is usually a non-polar hydrocarbon chain, such as a hydrocarbon chain with more than 8 carbon atoms. Surfactants are classified into ionic surfactants and nonionic surfactants. Surfactants have become a flexible and diverse class due to their physical and chemical ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/12
Inventor 丁亚萍
Owner 常州市亚邦亚宇助剂有限公司
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