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Quick-wetting carboxylic acid copolymer thickening agent and preparation method thereof

A technology of carboxylic acid copolymers and thickeners, which is applied in the field of high molecular polymers. It can solve the problems of destroying the permanent viscosity of polymers, loss, storage or transportation inconvenience, and achieve excellent wetting effect, stable reaction, and particle size. Effects with a small distribution

Active Publication Date: 2015-08-26
GUANGZHOU TINCI MATERIALS TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although increasing the shear rate helps to disperse the resin, high-shear mixers and homogenizers will destroy the polymer and cause permanent viscosity loss
In addition, the thickener of micropowder particles will cause serious inconvenience in storage and transportation.

Method used

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  • Quick-wetting carboxylic acid copolymer thickening agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0046] Step 1: Add 330g of cyclohexane, 15g of acrylic acid, 0.6g of lauryl methacrylate, 0.5g of sucrose allyl ether, 0.9g of polyoxyethylene 30 dipolyhydroxystearate into a 1000ml reactor, under nitrogen protection Stir at low temperature until the dispersion is uniform, then raise the temperature to 50°C, and add 0.05 g of acetylcyclohexylsulfonyl peroxide at one time. After about 15 minutes, the solution became cloudy and a white precipitate was formed.

[0047]Step 2: After continuing to react for 30 minutes, add 150g ethyl acetate, 72g acrylic acid, 3.3g lauryl methacrylate, 1.5g sucrose allyl ether, 2g polyoxyethylene 30 dimer A mixture of hydroxystearate and 0.21g of acetylcyclohexylsulfonyl peroxide was added dropwise for 3.5 hours.

[0048] Step 3: After the dropwise addition, add 0.02g of acetylcyclohexylsulfonyl peroxide and rinse the reactants remaining on the container wall with 15g of cyclohexane into the reaction kettle. After 30 minutes of heat preservation,...

Embodiment 2

[0051] Step 1: Add 330g cyclohexane, 15g ethyl acetate, 15g acrylic acid, 0.6g lauryl methacrylate, 0.5g sucrose allyl ether, 0.9g polyoxyethylene 30 dipolyhydroxystearic acid into a 1000ml reactor Esters were stirred under nitrogen protection until uniformly dispersed, then heated to 50°C, and 0.05 g of acetylcyclohexylsulfonyl peroxide was added at one time. After about 15 minutes, the solution became cloudy and a white precipitate was formed.

[0052] Step 2: After continuing to react for 30 minutes, add 135g ethyl acetate, 72g acrylic acid, 3.3g lauryl methacrylate, 1.5g sucrose allyl ether, 2g polyoxyethylene 30 dimer A mixture of hydroxystearate and 0.21g of acetylcyclohexylsulfonyl peroxide was added dropwise for 3.5 hours.

[0053] Step 3: After the dropwise addition, add 0.02g of acetylcyclohexylsulfonyl peroxide and rinse the reactants remaining on the container wall with 15g of cyclohexane into the reaction kettle. After 30 minutes of heat preservation, the temper...

Embodiment 3

[0056] Step 1: Add 330g cyclohexane, 54g ethyl acetate, 15g acrylic acid, 0.6g acrylate stearate, 0.5g pentaerythritol triallyl ether, 0.9g polyoxyethylene 30 dipolyhydroxystearin into a 1000ml reactor Ester, stirred under the protection of nitrogen until uniformly dispersed, then warmed up to 50°C, and 0.04g of di-n-propyl peroxydicarbonate was added at one time. After about 15 minutes, the solution became cloudy and a white precipitate was formed.

[0057] Step 2: After continuing to react for 30 minutes, add 96g ethyl acetate, 72g acrylic acid, 3.3g acrylate stearate, 1.5g sucrose allyl ether, 2g polyoxyethylene 30 dimer The mixture of hydroxystearate and 0.3g di-n-propyl peroxydicarbonate is added dropwise for 3.5h.

[0058] Step 3: Add 0.02 g of di-n-propyl peroxydicarbonate after the dropwise addition, and rinse the reactants remaining on the container wall with 15 g of cyclohexane into the reaction kettle. After 30 minutes of heat preservation, the temperature was rai...

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Abstract

The invention provides a preparation method of a quick-wetting carboxylic acid copolymer thickening agent, which comprises the following steps: adding an organic inert solvent containing at least 55wt% of a hydrocarbon solvent, 15wt%-20wt% of a monomer as well as an initiator, a dispersant and a cross-linking agent which are required by reaction into a reaction vessel, and performing reaction at 45-55DEG C for 30-60min; mixing an organic inert solvent containing at least 55wt% of an ester solvent, the rest of the monomer and the initiator, the dispersant and the cross-linking agent which are required by reaction, and adding the mixture into the reaction vessel within 3-6h and reacting under the same reaction temperature; and after all the reactant is dropwise added, raising the temperature to 55-75DEG C, adding the initiator again, performing heat preservation for 1-4h so that the monomer in the reaction system is reacted completely, ending the reaction, and discharging a product. The invention aims to provide the quick-wetting carboxylic acid copolymer thickening agent with quick wetting and dispersing properties and high bulk density, and meanwhile the invention further provides the preparation method of the quick-wetting carboxylic acid copolymer thickening agent.

Description

technical field [0001] The invention relates to the field of high molecular polymers, in particular to a fast-wetting carboxylic acid copolymer thickener with fast-wetting and dispersing properties and high bulk density, and a preparation method thereof. Background technique [0002] In the field of thickeners, unsaturated carboxylic acid polymers have good thickening properties, improve the thixotropic properties and stability of the gel system, and are widely used in the fields of daily cosmetics, medicine and oil exploration. Polyacrylic thickeners generally refer to polymers obtained by moderate crosslinking of monomers such as acrylic acid or methacrylic acid. [0003] This kind of thickener is generally provided in the form of particulate powder. Due to the strong hydrophilicity of unsaturated carboxylic acid polymer, if it is put into the stirring system continuously and quickly, it will combine with water to form a protective film. , to prevent the rapid wetting of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F220/06C08F220/18C08F216/14C08F222/02C08F2/00
Inventor 麦景璋户献雷
Owner GUANGZHOU TINCI MATERIALS TECH
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