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Zinc stearate dispersion solution and preparation method thereof

A technology of zinc stearate and dispersion liquid, applied in textile and papermaking, fiber raw material treatment, paper coating and other directions, can solve the problems of incomplete product reaction, unsatisfactory product quality and high process requirements, and achieve ideal lubrication effect and product quality. The effect of ideal quality and simple process method

Inactive Publication Date: 2019-07-02
SHANGHAI DONGSHENG NEW MATERIALS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The particle size of zinc stearate produced by ordinary technology is coarse, easy to flocculate and precipitate, and the use effect is not ideal
In addition, zinc stearate is highly difficult to emulsify, so the general zinc stearate emulsion is difficult to meet the sensitized lubrication needs of the paper industry, as well as the production requirements of pressure-sensitive paper and special paper. Therefore, the production of zinc stearate relatively high cost
[0003] Patent CN201210140831 discloses a water-based zinc stearate emulsion and its preparation method. The zinc stearate component prepared by this method has poor compatibility and poor emulsification effect. High process requirements require high-intensity grinding to make the particles smaller Disperses, produces a lot of foam especially at high solids
Patent CN201310645697.3 discloses an ultrafine zinc stearate aqueous dispersion and its preparation method. In this method, stearic acid is prepared into a uniform dispersion and added to the zinc oxide dispersion, and prepared by reaction below the melting point of stearic acid Zinc stearate, the reaction of the obtained product is not complete, a large amount of foam will be generated when the solid content is high, and the product quality is not ideal
Moreover, the manufacturing cost of the above two preparation methods is relatively high, and it is urgent to reduce the production cost while ensuring its application performance

Method used

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  • Zinc stearate dispersion solution and preparation method thereof
  • Zinc stearate dispersion solution and preparation method thereof
  • Zinc stearate dispersion solution and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] According to the formula ratio of zinc stearate emulsion, take 100 parts of water, 90 parts of stearic acid, 30 parts of maltodextrin, 3 parts of fatty acid methyl ester polyoxyethylene ether (10EO) sodium sulfonate, sorbitan monostearate Put 2 parts of acid ester, 1 part of sodium hexametaphosphate, and 2 parts of polyvinyl alcohol in a container, emulsify and stir at 85-90 ° C for 1 hour, add 0.5 parts of modified polysiloxane to defoam, and then add 50 parts of water , 20 parts of zinc oxide, 1.0 part of hydrogen peroxide, and 1 part of sodium polyacrylate are uniformly dispersed, stirred at constant temperature for 2.5 hours, rapidly cooled to below 60 degrees, passed through a homogenizer, and discharged, adding 15 parts of polyethylene glycol 200 , adjust the solid content to 50%-60%, and stir evenly to obtain the target product.

Embodiment 2

[0039] According to the formula ratio of zinc stearate emulsion, take 100 parts of water, 80 parts of stearic acid, 40 parts of oxidized starch, 3 parts of fatty acid methyl ester polyoxyethylene ether (10EO) sodium sulfonate, sorbitan monostearic acid Put 2 parts of ester, 2 parts of sodium tripolyphosphate, and 1 part of carboxymethyl cellulose in a container, emulsify and stir at 85-90°C for 1 hour, add 0.5 parts of modified polysiloxane to defoam, and then add 50 parts of Water, 25 parts of zinc oxide, 2 parts of ammonia water and 1.5 parts of polyvinyl alcohol are uniformly dispersed, stirred at constant temperature for 2.5 hours, rapidly cooled to below 60 degrees, passed through a homogenizer, and discharged, adding 20 parts of glycerol, Adjust the solid content to 50%-60%, and stir evenly to obtain the target product.

Embodiment 3

[0041] According to the formula ratio of zinc stearate emulsion, take 105 parts of water, 100 parts of stearic acid, 20 parts of maltose, 3 parts of fatty acid methyl ester polyoxyethylene ether (10EO) sodium sulfonate, sorbitan monostearate 1 part, 2 parts of sodium hexametaphosphate, and 3 parts of polyvinyl alcohol are placed in a container, emulsified and stirred for 1 hour at 85-90 ° C, and 0.5 parts of modified polysiloxane are added to defoam, and then 50 parts of water, 20 Part of zinc oxide, 1.5 parts of hydrogen peroxide and 2.0 parts of sodium polyacrylate are uniformly dispersed, stirred at constant temperature for 2.5 hours, rapidly cooled to below 60 degrees, passed through a homogenizer, discharged, added 20 parts of urea, and adjusted to a solid content of 50 %-60%, stir evenly to get the target product.

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Abstract

The invention discloses a zinc stearate dispersion solution. The dispersion solution comprises the following components in parts by weight: 120-160 parts of stearic acid, 20-40 parts of zinc oxide, 40-60 parts of polysaccharide, 2-5 parts of an emulsifier X, 1-4 parts of an emulsifier Y, 1-4 parts of a dispersant, 1-2 parts of a catalyst, and an appropriate amount of water. The invention also discloses a preparation method of the zinc stearate dispersion solution. The method comprises the following steps: mixing stearic acid, polysaccharide, the emulsifier X, the emulsifier Y, part of the dispersant and water according to the proportion to obtain a mixed solution, and performing heating constant temperature emulsification; and mixing zinc oxide, the catalyst, the residual dispersant and water to obtain a zinc oxide dispersion solution, then adding the zinc oxide dispersion solution into the mixed solution and carrying out reactions, and performing homogenization by a homogenization machine to obtain the zinc stearate dispersion solution. The dispersion solution has good component compatibility, the process method is simple, the manufacturing cost is low, the micronization of zinc stearate is realized, the solid content of zinc stearate particles in the emulsion is high, the viscosity is low, the emulsion is homogeneous, the sensitization and lubrication effects are ideal, the dispersion solution has no deterioration during a long time storage, the flocculation stratification phenomenon does not appear, and the product quality is ideal.

Description

technical field [0001] The invention relates to the field of zinc stearate preparation, in particular to a zinc stearate dispersion of a sensitizer for papermaking, a lubricant, a release agent in the plastics industry, and a functional additive for coatings, and a preparation method thereof. Background technique [0002] Zinc stearate dispersion is mainly used as special paper lubricant, thermal paper sensitizer, rubber release agent and water-based paint functional additive, but zinc stearate is insoluble in water, it needs to be prepared into particle dispersion In the application system, therefore, the particle size of zinc stearate directly affects its storage and application performance. The particle size of zinc stearate produced by ordinary technology is coarse, easy to flocculate and precipitate, and the use effect is not ideal. In addition, zinc stearate is highly difficult to emulsify, so the general zinc stearate emulsion is difficult to meet the sensitized lubr...

Claims

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Application Information

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IPC IPC(8): D21H21/14D21H19/14D21H19/20
CPCD21H21/14D21H19/14D21H19/20
Inventor 施晓旦谢中怡尹东华金霞朝
Owner SHANGHAI DONGSHENG NEW MATERIALS
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