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Water-soluble calcium stearate dispersion liquid and preparation method thereof

A calcium stearate dispersion, water-soluble technology, applied in fiber dispersant addition, paper forming aid addition, defoamer and other directions, can solve the problems of large amount of emulsifier, reduced viscosity, poor stability, etc. Good properties, high solid content and low viscosity

Active Publication Date: 2017-09-29
CHAMBROAD CHEM IND RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the calcium stearate dispersions circulating on the market generally have problems such as low solid content, high viscosity, poor stability, large amount of emulsifier, and the need to add irritating substances such as urea to reduce viscosity.

Method used

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  • Water-soluble calcium stearate dispersion liquid and preparation method thereof
  • Water-soluble calcium stearate dispersion liquid and preparation method thereof
  • Water-soluble calcium stearate dispersion liquid and preparation method thereof

Examples

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preparation example Construction

[0038] The present invention provides a kind of preparation method of water-soluble calcium stearate dispersion liquid described in above-mentioned technical scheme, comprises the following steps:

[0039] a) Calcium stearate, polyoxyethylene ether, polyoxyethylene ether sodium salt, oleic acid, dispersant, defoamer, pH regulator and water are mixed and then ground to obtain a water-soluble calcium stearate dispersion.

[0040] In the preparation method provided by the present invention, calcium stearate, polyoxyethylene ether, polyoxyethylene ether sodium salt, oleic acid, dispersant, defoamer, pH regulator and water are mixed according to the proportion and then ground Obtain described water-soluble calcium stearate dispersion liquid, this process specifically comprises:

[0041] a1), first mix polyoxyethylene ether, polyoxyethylene ether sodium salt, dispersant, pH regulator and oleic acid with part of water to obtain the first mixture;

[0042] a2), mixing the first mixtu...

Embodiment 1

[0048] In a 1L four-neck flask, add 310g of water, 10.5g of isomeric tridecyl alcohol polyoxyethylene ether (n=8), 15g of nonylphenol polyoxyethylene ether sulfonate (n=4), antifreeze dispersant BP -995 is 3g, oleic acid 22g, calcium hydroxide 3.5g, water-soluble silane defoamer (Guangdong Junxin Chemical Technology Co., Ltd., byfuel L85) 3.5g, stirring at 300r / min at room temperature (25°C) Stir at high speed to make it dissolve; after the dissolution is uniform, add 300g of calcium stearate, and stir at room temperature (25°C) at a stirring speed of 800r / min for 10min to wet the calcium stearate powder; then add 133g of water, Stir at a stirring speed of 200r / min for 20min at (25°C) to make it evenly mixed; finally, microgrind the above mixed material in a cone mill for 5min, and the obtained product is a white dispersion.

[0049] The obtained calcium stearate dispersion has a solid content of 45%, a rotational viscosity of 37CP at 25°C, a sieve residue (325 mesh)≤0.1%, and...

Embodiment 2

[0052] In a 1L four-neck flask, add 310g of water, 10.5g of isomeric tridecyl alcohol polyoxyethylene ether (n=8), 15g of fatty alcohol polyoxyethylene ether sodium sulfate (n=2), 3g of glycerin, 22g of oleic acid, Calcium hydroxide 3.5g, stir at room temperature (25°C) at a stirring speed of 300r / min to dissolve; after the dissolution is uniform, add 380g of calcium stearate, stir at room temperature (25°C) at a stirring speed of 800r / min 10min, calcium stearate powder is wetted; Then add the water of 133g, under room temperature (25 ℃) with the stirring speed of 200r / min stirring 20min, make it mix evenly; Grinding for 5 minutes, the resulting product is a white dispersion.

[0053] The obtained calcium stearate dispersion has a solid content of 50%, a rotational viscosity of 120CP at 25°C, a sieve residue (325 mesh)≤0.1%, and a pH of 10.3. Among the solids contained in the calcium stearate dispersion liquid, the particle content of 0.1 to 10 μm is 56.38 wt%, the content of...

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Abstract

The invention belongs to the technical field of chemical additives, and particularly relates to water-soluble calcium stearate dispersion liquid and a preparation method thereof. The water-soluble calcium stearate dispersion liquid provided by the invention is prepared from the following components in parts by weight: 250 to 400 parts of calcium stearate, 8 to 15 parts of polyoxyethylene ether, 8 to 20 parts of polyoxyethylene ether sodium salt, 20 to 25 parts of oleic acid, 1 to 5 parts of dispersing agent, 0 to 5 parts of antifoaming agent, 1 to 5 parts of pH regulator, and 400 to 550 parts of water, wherein the polyoxyethylene ether comprises iso-tridecanol polyoxyethylene ether and / or nonylphenol polyoxyethylene ether; the polyoxyethylene ether sodium salt comprises polyoxyethylene fatty alcohol sodium sulfate and / or sodium nonyl phenol polyethyleneoxy ether sulfonate. As proved by experimental results, the water-soluble calcium stearate dispersion liquid provided by the invention is 30 to 120CP (25 DEG C) in viscosity, is 40 to 50 percent in solid content, and has high storage stability.

Description

technical field [0001] The invention belongs to the technical field of chemical additives, in particular to a water-soluble calcium stearate dispersion and a preparation method thereof. Background technique [0002] Calcium stearate dispersion is a uniform dispersion formed by dispersing calcium stearate with a certain amount of dispersant and stabilizer in water by dispersing process. Calcium stearate dispersion, as a coating lubricant for coated paper, has been used in my country's paper industry as early as the early 1980s. Beijing Research Institute of Chemical Industry is the first unit to carry out this research in China. Now, calcium stearate dispersions have occupied an important position in the field of paper coating lubricants. [0003] At present, the calcium stearate dispersions circulating on the market generally have problems such as low solid content, high viscosity, poor stability, large amount of emulsifier, and the need to add irritating substances such as...

Claims

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Application Information

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IPC IPC(8): D21H21/08D21H21/12D21H21/06
CPCD21H21/06D21H21/08D21H21/12
Inventor 金萍马韵升姚刚张凤岐包英张红娟祁聪董双建慕鹏飞
Owner CHAMBROAD CHEM IND RES INST CO LTD
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