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Stearic acid water-based dispersion and preparation method thereof

A water-based dispersion liquid and stearic acid technology, which is applied in the fields of waterproofing agent, mold release agent and heat stabilizer, can solve the problems of increased viscosity of the system and unsuitability for the preparation of water-based stearic acid with high solid content, and achieve easy operation, Excellent lubricating effect and low viscosity

Inactive Publication Date: 2013-04-24
洛阳惠尔纳米科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the mass fraction of stearic acid exceeds 15%, the viscosity of the system increases sharply
Therefore, above-mentioned method is not suitable for preparing the aqueous stearic acid of high solid content

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A preparation method of stearic acid aqueous dispersion, it may further comprise the steps:

[0023] Step 1. Add 35kg of water and 15kg of stearic acid granules into the reaction kettle, and heat until the stearic acid is completely melted;

[0024] Step 2. Add 200g stearyl polyoxypropylene ether, 50g fatty alcohol and ethylene oxide condensate to the molten stearic acid obtained in step 1 under stirring, stop stirring after the reaction system is cooled to room temperature, and add 50g Polyoxypropylene glyceryl ether and 60g isothiazolinone;

[0025] Step 3, ultrafine grinding the mixture obtained in step 2 for 7 minutes to obtain a stearic acid aqueous dispersion with a solid content of 30%.

Embodiment 2

[0027] A preparation method of stearic acid aqueous dispersion, it may further comprise the steps:

[0028] Step 1. Add 40kg of water and 9.7kg of stearic acid granules into the reactor, and heat until the stearic acid is completely melted;

[0029] Step 2, add 100g coconut oil fatty acid diethanolamide, 50g Tween-80, 50g sodium carboxymethylcellulose successively to the molten stearic acid gained in step 1 under stirring, stop stirring after the reaction system is cooled to room temperature, Add 10g polyoxypropylene glyceryl ether, 30g polydimethylsiloxane and 60g dichlorodimethylhydantoin;

[0030] Step 3, ultrafine grinding the mixture obtained in step 2 for 5 minutes to obtain a stearic acid aqueous dispersion with a solid content of 20%.

Embodiment 3

[0032] A preparation method of stearic acid aqueous dispersion, it may further comprise the steps:

[0033] Step 1. Add 45kg of water and 5kg of stearic acid granules into the reactor, and heat until the stearic acid is completely melted;

[0034] Step 2. Add 100g fatty acid polyoxyethylene ester, 100g alkylphenol polyoxyethylene ether, and 50g urea to the molten stearic acid obtained in step 1 successively under stirring, stop stirring after the reaction system is cooled to room temperature, and add 30g emulsified Silicone oil and 40 g methylparaben;

[0035] Step 3, ultrafine grinding the mixture obtained in step 2 for 3 minutes to obtain a stearic acid aqueous dispersion with a solid content of 10%.

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Abstract

The invention discloses a stearic acid water-based dispersion which is prepared from stearic acid, dispersing agent, emulsifier, defoaming agent, preservative and water, and by the total weight percentage of the water-based stearic acid, the stearic acid water-based dispersion comprises the stearic acid 5-30%, the dispersing agent 0.1-0.5%, the emulsifier 0.1-0.7%, defoaming agent 0.05-0.5%, preservative 0.1-0.5%, and the balance water. The invention further discloses the preparation method of the stearic acid water-based dispersion. The stearic acid water-based dispersion is small in average particle diameter, low in viscosity, moreover the system is capable of maintaining stability for a long time, free of skinning and sedimentation, safe and environment-friendly, and ideal in lubricating effect, and the preparation method of the stearic acid water-based dispersion is simple in processing step, rapid and easy to operate, and the prepared stearic acid water-based dispersion is high in solid content.

Description

technical field [0001] The invention relates to a stearic acid aqueous dispersion and a preparation method thereof, which is mainly used as a release agent, a heat stabilizer and a waterproof agent. Background technique [0002] As a high-level saturated fatty acid, stearic acid is widely used in cosmetics industry, rubber industry, pharmaceutical industry, etc. It is mainly used as plastic cold-resistant plasticizer, release agent, stabilizer, surfactant, rubber vulcanization accelerator, waterproof agent, polishing agent, etc. agent, metal mineral flotation agent, softener, etc. Since stearic acid is insoluble in water, most of the existing stearic acid on the market is granular or flaky crystals, and it is not easy to disperse uniformly in the system in the form of particles. Therefore, organic solvents are often used for dispersion when used, but organic Solvents are a serious hazard to the environment. The water-based stearic acid can effectively reduce the harm of or...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C33/60C08K5/09
Inventor 杜德光葛巧谊李明
Owner 洛阳惠尔纳米科技有限公司
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