Water-based zinc stearate dispersion liquid and preparation method thereof

A technology of zinc stearate and dispersion liquid, which is applied in textiles and papermaking, fiber raw material processing, non-fiber pulp addition, etc. It can solve the problems of low solid content, large particle size, complicated process, etc., and achieve high solid content, The effect of fine particle size and reasonable process

Active Publication Date: 2011-06-22
DONGGUAN CHNV TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the production of water-based zinc stearate dispersion has spread all over the country, but the solid content is generally about 40% and the particle size is relatively large. A two-step method is adopted, that is, firstly make zinc stearate dry powder, and then grind and disperse Obtained, or need to add multiple times in the preparation process, the process is more complicated, the cost is high, the particle size is coarse and the solid content is not high

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0044] Produced as follows:

[0045] (1) disposablely add zinc stearate 54 grams in autoclave, water 138 grams, emulsifier polyoxyethylene (20) sorbitan monooleate 2.0 grams, emulsifier alkylphenol polyoxyethylene ( 10) 3.0 grams of ether, 0.7 grams of water-soluble silicone oil as a defoamer, 1.0 grams of polyoxyethylene ether as a dispersant, 0.2 grams of tetrachloroisophthalonitrile as a fungicide, and 1.5 grams of urea as an auxiliary agent;

[0046] (2) Seal the autoclave well and start heating. When the heating temperature rises to 140° C., start constant temperature stirring at a stirring speed of 600 rpm, stop stirring after 1 hour and rapidly cool to room temperature. The resulting product has a viscosity of 286mPa·S (measured by a DV-I Prime viscometer, the same below), an average particle size of 0.65 μm (measured by a BT-9300Z laser particle size distribution analyzer, the same below), and a solid content of 30wt%.

example 2

[0048] Produced as follows:

[0049] (1) In the autoclave, add 69 grams of zinc stearate at one time, 119 grams of water, 2.5 grams of emulsifier fatty alcohol polyoxyethylene (9) ether, and 3.5 grams of emulsifier nonylphenol polyoxyethylene (10) ether , 0.5 grams of antifoaming agent polyether-siloxane copolymer, 1.5 grams of dispersant glyceryl tristearate, 0.5 grams of bactericide phosphorochloromethane-cresol, 1.5 grams of auxiliary polyethylene glycol 400;

[0050] (2) Seal the autoclave well and start heating. When the heating temperature rises to 150° C., start constant temperature stirring at a stirring speed of 700 rpm, stop stirring after 1 hour and rapidly cool to room temperature. The obtained product has a viscosity of 375 mPa·S, an average particle diameter of 0.88 μm, and a solid content of 39 wt%.

example 3

[0052] Produced as follows:

[0053] (1) Add 78 grams of zinc stearate, 110 grams of water, 3.5 grams of emulsifier polyoxyethylene (20) sorbitan monostearate, and 3.5 grams of emulsifier sorbitan monostearate into the autoclave 4.5 grams of fatty acid ester, 0.3 grams of antifoaming agent polyether-siloxane copolymer, 1.5 grams of aqueous dispersant methyl amyl alcohol, 0.7 grams of bactericide sodium pentachlorophenate, 2 grams of auxiliary liquid paraffin;

[0054] (2) Seal the autoclave and start heating. When the heating temperature rises to 160° C., start stirring at a constant temperature at a stirring speed of 800 rpm. Stop stirring after 1 hour and rapidly cool to room temperature. The obtained product has a viscosity of 527 mPa·S, an average particle diameter of 1.28 μm, and a solid content of 44 wt%.

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Abstract

The invention relates to a water-based zinc stearate dispersion liquid, the main component of which is zinc stearate, and a preparation method thereof. The dispersion liquid is mainly used as a coating lubricating agent for papermaking, a sensitizing agent for heat-sensitive paper, and a functional auxiliary agent for water-based paint. The dispersion liquid is prepared from the zinc stearate, emulsifier A, emulsifier B, auxiliary agent, dispersing agent, de-foaming agent, bactericide and water. The method for preparing the dispersion liquid comprises the following steps: adding the zinc stearate, emulsifier A, emulsifier B, auxiliary agent, dispersing agent, de-foaming agent, bactericide and water into a high-pressure reactor according to a certain proportion, sealing the reactor, heating to 140-180 DEG C, stirring for 1 hour at constant temperature, quickly cooling to room temperature, thereby obtaining the target product. The method is simple and convenient, the process is reasonable, and the prepared water-based zinc stearate dispersion liquid has the advantages of low cost, small grain size, high solid content, small viscosity and high efficiency.

Description

Technical field: [0001] The invention relates to a water-based zinc stearate dispersion mainly composed of zinc stearate and a preparation method thereof. The dispersion is mainly used as a coating lubricant for papermaking, a sensitizer for heat-sensitive paper and a functional water-based paint. Auxiliary. Background technique: [0002] As a lubricant, zinc stearate is widely used in industries such as rubber, paper making, paint and cosmetics. Zinc stearate lubricant is a water-insoluble metal soap surfactant, which is generally made into an aqueous dispersion. Because the water-based zinc stearate dispersion is economical and practical, it has been used as one of the important additives for coating processed paper, rubber, plastics and coatings. [0003] At present, the production of water-based zinc stearate dispersion has spread all over the country, but the solid content is generally about 40% and the particle size is relatively large. A two-step method is adopted, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H21/14C09D7/12C10M173/02
Inventor 荀育军刘清泉
Owner DONGGUAN CHNV TECH CO LTD
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