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A kind of sulfonate surfactant for waterborne paint and preparation method thereof

A surfactant and water-based coating technology, applied in the field of new compounds, can solve the problems of high loss, low product yield and purity, etc., and achieve the effects of increasing specificity, promoting the aggregation of hydrophilic terminal charges, and increasing hydrophilicity

Active Publication Date: 2019-09-27
JIANGSU UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although there are many related research reports, the current method for preparing sulfonate surfactants has defects such as excessive loss in the separation process of the product, and low yield and purity of the product.

Method used

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  • A kind of sulfonate surfactant for waterborne paint and preparation method thereof
  • A kind of sulfonate surfactant for waterborne paint and preparation method thereof
  • A kind of sulfonate surfactant for waterborne paint and preparation method thereof

Examples

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Effect test

Embodiment 1

[0024] A kind of sulfonate surfactant that is used for waterborne paint, the molecular structural formula of described surfactant is as follows:

[0025]

[0026] Wherein, the main structure of sulfonate is methylbenzene; M + For sodium ion; R is decanol.

[0027] A method for preparing a sulfonate surfactant for water-based coatings, which uses acetylene and methanol to react to generate vinyl ether, grafts it to an aromatic ring, and replaces an alkoxy group with a long-chain alkane, thereby obtaining a long-chain alkyl group that can be converted The sulfonate surfactant, concrete steps are as follows:

[0028] In the first stage, acetylene and methanol are mixed under 20 atmospheres, the reaction temperature is 170°C, KOH is used as the catalyst, and the reaction is carried out for 6 hours to obtain small molecule vinyl ether;

[0029] In the second stage, the small molecular vinyl ether and methylbenzene are mixed under normal pressure, using cyclohexane as the solve...

Embodiment 2

[0035] A kind of sulfonate surfactant that is used for waterborne paint, the molecular structural formula of described surfactant is as follows:

[0036]

[0037] Wherein, the main structure of sulfonate is methylbenzene; M + Is calcium ion; R is dodecylphenol.

[0038] A method for preparing a sulfonate surfactant for water-based coatings, which uses acetylene and ethanol to react to generate vinyl ether, grafts it to the aromatic ring, and replaces the alkoxy group with a long-chain alkane, thereby obtaining a long-chain alkyl group. The sulfonate surfactant, concrete steps are as follows:

[0039] In the first stage, acetylene and ethanol are mixed at 25 atmospheres, the reaction temperature is 160°C, KOH is used as the catalyst, and the reaction is carried out for 5 hours to obtain small molecular vinyl ether;

[0040] In the second stage, the small molecule vinyl ether and methylbenzene are mixed under normal pressure, using cyclohexane as the solvent, the temperatur...

Embodiment 3

[0046] A kind of sulfonate surfactant that is used for waterborne paint, the molecular structural formula of described surfactant is as follows:

[0047]

[0048] Wherein, the main structure of sulfonate is methylnaphthalene; M + For sodium ion; R for capric acid.

[0049] A method for preparing a sulfonate surfactant for water-based coatings, which uses acetylene and ethanol to react to generate vinyl ether, grafts it to the aromatic ring, and replaces the alkoxy group with a long-chain alkane, thereby obtaining a long-chain alkyl group. The sulfonate surfactant, concrete steps are as follows:

[0050] In the first stage, acetylene and ethanol are mixed at 22 atmospheres, the reaction temperature is 165°C, KOH is used as the catalyst, and the reaction is carried out for 5.5 hours to obtain small molecular vinyl ether;

[0051] In the second stage, the small molecule vinyl ether and methyl naphthalene are mixed under normal pressure, using cyclohexane as the solvent, the te...

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Abstract

The invention discloses a sulfonate surfactant for water-based coatings and a preparation method thereof. The molecular structure formula of the surfactant is as follows: wherein, the main structure of the sulfonate is an aromatic ring compound with a substituent, and the aromatic compound is The number of rings is 1~3; M + It is a metal ion; R is a long-chain alkane with more than 8 carbon atoms. The invention adopts the reaction of acetylene and small molecular alcohol to generate vinyl ether, grafts it on the aromatic ring, and replaces the alkoxy group with long-chain alkane, so as to obtain the sulfonate surfactant with switchable long-chain alkyl. The method of the present invention broadens the selection range of reaction raw materials, and can introduce multiple functional groups at the same time to increase the specificity of sulfonate surfactants; the electronic structure of aromatic ring compounds with substituents is more active, which promotes the improvement of hydrophilic end The accumulation of charges increases the hydrophilicity.

Description

technical field [0001] The invention belongs to the field of novel compounds, and relates to a novel compound and a synthesis method thereof, in particular to a sulfonate surfactant for water-based coatings and a preparation method thereof. Background technique [0002] Surfactant, known as "industrial monosodium glutamate", refers to a substance that has fixed hydrophilic and lipophilic groups, can be oriented on the surface of the solution, and can significantly reduce the surface tension. Surfactants are generally organic amphiphilic molecules with hydrophilic and hydrophobic groups, soluble in organic and aqueous solutions. Hydrophilic groups are often polar groups, such as carboxylic acid, sulfonic acid, sulfuric acid, amino or amine groups and their salts, or hydroxyl, amide groups, ether bonds, etc.; and hydrophobic groups are often non-polar Hydrocarbon chains, such as hydrocarbon chains with more than 8 carbon atoms. Surfactants are divided into ionic surfactants ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C303/32C07C309/37C07C309/31B01F17/12C09K23/12
CPCC09D7/63C09D163/00C07C1/20C07C41/30C07C303/06C07C303/32C08K5/42C08K13/02C09D5/08
Inventor 高延敏陈亮左银泽吴双周岳珅
Owner JIANGSU UNIV OF SCI & TECH