Novel waterborne zinc stearate emulsion, and preparation method thereof

A technology of zinc stearate and stearic acid, which is applied in textiles and papermaking, fiber raw material processing, and paper forming additives addition, can solve the problems of high process cost, large product particle size, unfriendly environment, etc., and achieve increased The effect of contact area, no dust pollution, and reasonable process

Inactive Publication Date: 2018-04-20
HUZHOU CITY LINGHU XINWANG CHEM CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The technical problem to be solved in the present invention: provide a kind of preparation method of novel water-based zinc stearate, to solve the production process cost of water-based zinc stearate produced in the present technology is high, the environment is not friendly, the product particle size is large, and the quality is unreliable , the particle size is single, cannot meet the specifications required by different fields, and has limitations and other problems

Method used

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  • Novel waterborne zinc stearate emulsion, and preparation method thereof
  • Novel waterborne zinc stearate emulsion, and preparation method thereof
  • Novel waterborne zinc stearate emulsion, and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Preparation of dispersion 1: Add 300kg of stearic acid, 450kg of deionized water, and 4kg of emulsifier hexadecyldimethylammonium bromide into a high-shear reaction kettle, stir and heat to 60°C for 10 minutes for pre-dispersion. Preparation of dispersion 2: Add 45.5 kg of zinc oxide, 250 kg of deionized water, 2 kg of emulsifier, and 5.2 kg of dispersant into a glass-lined reactor, and stir and mix to obtain a zinc oxide dispersion. Add the dispersion liquid 2 to the dispersion liquid 1, and fully react for 2 hours under high-shear stirring at a temperature of 60-80°C. Stop heating, quickly cool down to room temperature, add 5.5 kg of defoamer, and finally grind and refine for 2 hours to obtain the target product. The resulting product has a viscosity of 37.5mPa.S, a solid content of 32.3%, and an average particle size of 4.1μm. The product is uniform and stable without delamination. It can be used for metal cold extrusion, replacing the phosphating-saponification pro...

Embodiment 2

[0041] Preparation of dispersion 1: Add 350kg of stearic acid, 500kg of deionized water, and 8kg of emulsifier into a high-shear reaction kettle, stir and heat to 60°C for 10 minutes for pre-dispersion. Preparation of dispersion 2: Add 68 kg of zinc hydroxide, 100 kg of deionized water, 4 kg of emulsifier, and 5.5 kg of dispersant into a glass-lined reactor, and stir and mix to obtain a zinc hydroxide dispersion. Add the dispersion liquid 2 to the dispersion liquid 1, and fully react for 2 hours under high-shear stirring at a temperature of 60-80°C. Stop heating, quickly cool down to room temperature, add 5.5 kg of defoamer, and finally grind and refine for 3 hours to obtain the target product. The resulting product has a viscosity of 52.4mPa.S, a solid content of 37.8%, and an average particle size of 3.5μm. The product is uniform and stable without delamination. It can be used for thermal paper and special paper surface coating to improve printability and reduce the frictio...

Embodiment 3

[0043] Preparation of dispersion 1: Add 380kg of stearic acid, 500kg of deionized water, and 12kg of emulsifier into a high-shear reaction kettle, stir and heat to 60°C for 10 minutes for pre-dispersion. Preparation of dispersion 2: Add 82kg of zinc carbonate, 100kg of deionized water, 6kg of emulsifier, and 6.5kg of dispersant into a glass-lined reactor, and stir and mix to obtain a zinc carbonate dispersion. Add dispersion liquid 2 to dispersion liquid 1, stir under high shear at a temperature of 60-80° C., and fully react for 2 hours. Stop heating, quickly cool down to room temperature, add 6.0 kg of defoamer, and finally grind and refine for 3 hours to obtain the target product. The resulting product has a viscosity of 72mPa.S, a solid content of 40.5%, and an average particle size of 1.5μm. The product is uniform and stable without delamination. It can be used in water-based coatings to improve the hydrophobicity of coatings and the feel of coating films.

[0044] The h...

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Abstract

The invention discloses a novel waterborne zinc stearate emulsion. The novel waterborne zinc stearate emulsion is characterized by comprising 50.0 to 60.0% of deionized water, 27.0 to 45.5% of stearicacid, 4.0 to 9.0% of a zinc compound, 1.0 to 2.0% of an emulsifier, 0.5 to 1.0% of a dispersant and 0.5 to 1.5% of an antifoaming agent. According to the invention, the above raw materials are addedin two steps; stearic acid, deionized water and the emulsifier are mixed under stirring at first so as to obtain a fully-dispersed uniform stearic acid emulsion, and a contact area of stearic acid anda subsequent reactant is increased, which allows a full reaction to take place; and the emulsifier allows the fused stearic acid to be uniformly dispersed in an aqueous medium, so a specific surfacearea is increased, and subsequent reactions are promoted.

Description

technical field [0001] The invention relates to a novel water-based zinc stearate emulsion and a preparation method thereof, belonging to the field of chemical additives. Background technique [0002] Water-based zinc stearate is an emulsion that uniformly and stably disperses zinc stearate in water medium. The appearance of the product is white emulsion, non-toxic, non-polluting, and non-hazardous. Good compatibility characteristics. Water-based zinc stearate avoids dust pollution, meets environmental protection requirements, and has a wide range of applications. Water-based coatings: used for high-quality water-based coatings, with good transparency, fast defoaming, good stability, good anti-sedimentation, fast drying, easy dispersion, easy grinding, improving the hydrophobicity of the coating surface, improving the feel of the paint film, etc. There are outstanding performances. Water-based ink: It has good economy and can be used as flatting agent, filler, stabilizer,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D21H19/14D21H21/06B21C23/32C09D7/63
CPCD21H19/14B21C23/32D21H21/06
Inventor 沈云飞杨中伟张依轩
Owner HUZHOU CITY LINGHU XINWANG CHEM CO LTD
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