Associative acrylate thickening agent as well as preparation method and application thereof

A technology of acrylate and thickener, which is applied in the field of associative acrylate thickener and its preparation, and can solve problems such as inconvenient use, reduced thickening efficiency, and environmental pollution

Inactive Publication Date: 2011-02-16
GUANGZHOU SHINE POLYMER TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Acrylate thickener is a fluid emulsion or powder product, which is acidic in itself, and must be neutralized with alkali or ammonia water to pH 6-9 to achieve thickening effect. Different pH values, different neutralizers and soluble salts exist It has a great influence on the

Method used

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  • Associative acrylate thickening agent as well as preparation method and application thereof
  • Associative acrylate thickening agent as well as preparation method and application thereof
  • Associative acrylate thickening agent as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0119] (1) Preparation of reactive surfactant:

[0120] 0.105mol of maleic anhydride, 0.1mol of fatty alcohol polyoxyethylene ether (Pingpingjia O-15, Jiangsu Haian Chemical Factory, and CH 3 Add COONa into a four-neck flask equipped with a stirring, reflux condenser and a thermometer, stir within 10 minutes and raise the temperature to 70°C to melt the reactants. After raising the temperature to 110°C, keep it warm for 3 hours to obtain 115g of light yellow wax, which is a fatty alcohol polysaccharide. Oxyethylene ether maleate half ester has the following structural formula, and its acid value is 61.24 mg / g KOH.

[0121] C 18 h 37 O(CH 2 CH 2 O) 15 COCH=CHCOOH

[0122] (2) Preparation of monomer emulsion:

[0123] Add 100mL of deionized water into the flask, add 6g of reactive surfactant prepared according to step (1), 21g of acrylic acid, 70g of ethyl acrylate and 2g of ethoxylated trimethylolpropane trimethacrylate (SR368 , American Sartomer Corporation). Stirring...

Embodiment 2

[0129] (1) Preparation of reactive surfactant:

[0130] With embodiment 1.

[0131] (2) Preparation of monomer emulsion:

[0132] 100mL of deionized water was added to the flask, and 3g of the reactive surfactant prepared in Example 1, 23g of methacrylic acid, 71.2g of ethyl methacrylate and 2g of propoxylated glycerol trimethacrylate ( SR492, Sartomer, USA). Stirring was kept at room temperature for 1 h to obtain 199.2 g of monomer emulsion.

[0133] (3) Preparation of associative acrylate thickener:

[0134] A, 0.8g ammonium persulfate is dissolved with deionized water, is settled to 8ml, obtains 10% ammonium persulfate solution;

[0135] B. Add 1 / 5 mass of monomer emulsion prepared in step (2) and 1 / 4 volume of ammonium persulfate solution prepared in step A to 100 mL of deionized water, heat up to 86°C and stir for 0.5 h under nitrogen protection , to obtain seed emulsion;

[0136] C. Then dropwise add 1 / 2 mass of the ammonium persulfate solution prepared in step A a...

Embodiment 3

[0138] (1) Preparation of reactive surfactant:

[0139] 0.01mol of acrylic acid, 0.1mol of fatty alcohol polyoxyethylene ether Ethylan 1008 (AkzoNobel) and 0.5% of CH 3 COONa was added to a four-necked flask equipped with a stirring, reflux condenser and a thermometer, stirred and heated to 70°C within 15 minutes to melt the reactants, then heated to 105°C, and kept for 3.5h to obtain 82g of fatty alcohol polyoxyethylene ether acrylate. Its acid value is 97.6mg / g KOH, and its structural formula is as follows:

[0140] C 10 h 21 O(CH 2 CH 2 O) 8 COCH=CH 2 .

[0141] (2) Preparation of monomer emulsion:

[0142] 80 mL of deionized water was added to the flask, and 7.8 g of the reactive surfactant prepared according to Example 1, 10 g of acrylic acid, 21 g of methacrylic acid, 60 g of ethyl acrylate and 0.2 g of pentaerythritol triacrylate were added dropwise in sequence. Stirring was kept at room temperature for 1 h to obtain 179 g of monomer emulsion.

[0143] (3) Pre...

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Abstract

The invention discloses an associative acrylate thickening agent as well as a preparation method and application thereof. The thickening agent in dry weight comprises the following component in percentage by mass: 20-40% of hydrophilic monomer, 50-70% of hydrophobic monomer, 1-10% of reactive surfactant and 0.2-2.0% of cross-linking agent. The preparation method comprises the following steps of: mixing the reactive surfactant, the hydrophilic monomer, the hydrophobic monomer, the cross-linking agent and water to prepare a monomer emulsion; reacting a part of monomer emulsion with a part of initiating agent solution to prepare a seed emulsion; adding the reset monomer emulsion and a part of the initiating agent solution into the seed emulsion; and finally adding the rest initiating agent solution to prepare the associative acrylate thickening agent. The thickening agent has the advantages of strong electrolyte resistance, good compatibility with surfactants, wide pH value application range and excellent thickening capability and suspension capability, and is applicable to the thickening of aqueous systems and system mainly containing water.

Description

technical field [0001] The invention relates to a thickener, in particular to an associative acrylate thickener and its preparation method and application. Background technique [0002] Thickeners are usually used to adjust the viscosity of liquids, improve the thixotropic properties of gel systems and improve the stability of finished products, in the field of cosmetics, medicine and technical products such as: creams, cleaning products, inks, coatings, Dispersants, binders and food, etc. play a very important role. Thickeners can generally be divided into inorganic thickeners and organic thickeners. Inorganic thickeners mainly include silicate, clay, bentonite, etc. Organic thickeners are further divided into natural thickeners and synthetic thickeners. Natural thickeners include various natural (tree) gums, starch, cellulose and its derivatives, polysaccharides, etc. Synthetic thickeners mainly include acrylates, acrylamides and polyurethanes. [0003] Natural thicke...

Claims

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Application Information

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IPC IPC(8): C08F290/06C08L51/08C09D7/12A61Q19/10A61K8/81C08F283/06
Inventor 石建伟李向涛杜纯丽
Owner GUANGZHOU SHINE POLYMER TECH
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