Method for preparing non-ionic calcium stearate water-based dispersion emulsion

A calcium stearate, water-based dispersion technology, applied in chemical instruments and methods, dissolution, chemical/physical processes, etc., can solve the problems of unsuitable long-distance transportation and long-term storage, complex production process, wide particle size distribution, etc. Low cost, high solid content and good stability

Inactive Publication Date: 2011-10-12
HUNAN UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the production of calcium stearate water-based dispersion emulsion has spread all over the country, but the solid content of the emulsion is generally below 50% and the viscosity is relatively high. The production process is complicated, the cost is high, the particle size distribution is wide, and the stability is poor, so it is not suitable for long-distance transportation. and long-term storage

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0020] Add 32 grams of stearic acid, 58 grams of water, 1.48 grams of emulsifier polyoxyethylene (20) sorbitan monooleate, and 2.5 grams of emulsifier fatty alcohol polyoxyethylene (9) ether into the three-necked bottle. Foaming agent water-soluble silicone oil 0.3 g, protective colloid polyvinyl alcohol aqueous solution 0.5 g, bactericide pentachloronitrobenzene 0.3 g, emulsification auxiliary agent glycerol 0.3 g, potassium chloride 0.02 g. Install the condenser tube and seal it, heat up to 85°C, stir and emulsify quickly at constant temperature for 1 hour, the stirring speed is 500 rpm, then slowly add 4.6 grams of calcium hydroxide, stir and react at constant temperature for 3 hours, then stop heating, and quickly cool to room temperature , to obtain calcium stearate aqueous dispersion emulsion. The obtained product has a viscosity of 106 mPa·S (measured by a DV-I Prime viscometer, the same below), an average particle size of 0.57 μm (measured by a BT-9300Z laser particle ...

example 2

[0022] Add 40 grams of stearic acid, 49 grams of water, 1.5 grams of emulsifier polyoxyethylene (20) sorbitan monostearate, and 2.5 grams of emulsifier sorbitan monooleate into the three-necked bottle. Foaming agent water-soluble silicone oil 0.4 g, protective colloid polyvinyl alcohol aqueous solution 0.7 g, fungicide sodium pentachlorophenate 0.3 g, emulsification aid urea 0.38 g, potassium chloride 0.02 g. Install the condenser tube, seal it, heat up to 85°C, stir and emulsify quickly at constant temperature for 1 hour, the stirring speed is 500 rpm, then slowly add 5.2 grams of calcium hydroxide, stir and react at constant temperature for 3 hours, then stop heating, and quickly cool to room temperature , to obtain calcium stearate aqueous dispersion emulsion. The resulting product has a viscosity of 286 mPa·S, an average particle size of 2.87 μm, and a solid content of 51 wt%.

example 3

[0024] In the three-necked bottle, add 53 grams of stearic acid, 32 grams of water, 2.5 grams of emulsifier polyoxyethylene monooleate, 3 grams of emulsifier sorbitan monostearate, and defoamer dimethyl silicone 0.5 gram of alkane, 1 gram of protective colloid polyvinyl alcohol aqueous solution, 0.5 gram of bactericide glutaraldehyde, 0.45 gram of auxiliary liquid paraffin, and 0.05 gram of potassium chloride. Install the condenser tube and seal it, heat up to 85°C, stir and emulsify quickly at constant temperature for 1 hour, the stirring speed is 500 rpm, then slowly add 7 grams of calcium hydroxide, stir and react at constant temperature for 3 hours, then stop heating, and quickly cool to room temperature , to obtain calcium stearate aqueous dispersion emulsion. The obtained product had a viscosity of 568 mPa·S, an average particle size of 4.6 μm, and a solid content of 68 wt%.

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Abstract

The invention belongs to the chemical field and in particular relates to a method for preparing non-ionic calcium stearate water-based dispersion emulsion. The method provided by the invention comprises the following steps of: adding water, stearic acid, emulsifier A, emulsifier B, emulsification assistant, protective colloid aqueous solution, defoaming agent, bactericide and electrolyte salt in a container in certain proportion; then heating until the temperature is increased to 85 DEG C, rapidly stirring and emulsifying, reducing the stirring speed after emulsifying at constant temperature for 1 hour, slowly adding alkalizer in certain proportion, stirring at constant temperature for 3 hours, and then rapidly cooling to room temperature, thus a target product is obtained. The water phase emulsion reaction method provided by the invention has the advantages of simple process, low cost, high solid content, low viscosity, good stability, no yellowing, no objectionable odour and no pollution, and the particle size of calcium stearate and the solid content and viscosity of the water-based dispersion emulsion are adjustable in a certain scope.

Description

technical field [0001] The invention belongs to the field of chemical industry, and specifically relates to a preparation method of an aqueous dispersion emulsion with calcium stearate as the main component, which is mainly used as an auxiliary agent in the coating process of papermaking, a stabilizer for plastic processing, a flatting agent for coatings, a water-resistant agent for textiles, etc. . Background technique [0002] Higher fatty acid salts of metals other than sodium and potassium are commonly called metal soaps. Calcium stearate is a representative variety of metal stearate soaps, which have the dual characteristics of metal salts and fatty acids. Calcium stearate is a good polyvinyl chloride heat stabilizer and paper coating lubricant. It can be used as a flatting agent and water resistance agent in the production of coatings. It can also be used as a release agent. It is used in plastics, coatings and paper industries. It is widely used in production. With t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01F17/00C09K23/00
Inventor 刘清泉
Owner HUNAN UNIV OF SCI & TECH
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