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A kind of preparation method of stable high solid content oil-in-water emulsion

An oil-in-water emulsion with high solid content technology, applied in the field of fine chemicals, can solve problems such as narrow application range, one-sided process application range, poor stability, etc., achieve wide application range, fully encapsulated and dispersed stability, and improve stability Effect

Active Publication Date: 2017-03-01
JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] For now, the oil phase volume fraction of most high-solid content emulsions is 60-70%. There are many studies on high-solid content emulsions at home and abroad, but most of them are high-solid content polymer emulsions prepared by chemical reactions. , such as emulsion polymerization, polymer dispersion, etc., such as US5124394 introduced the use of polyvinyl oxazoline as a phase transfer stabilizer in the polymerization process, synthesized a high solid content vinyl acetate-ethylene copolymer emulsion with a wide particle size distribution, CN102892830A prepared by first The terpolymer is then modified, and finally emulsified with different concentrations of nonionic surfactants to obtain polyolefins, especially emulsions containing polyisobutylene. However, the process of the two is cumbersome and the operation requires high precision. Therefore, industrialization more difficult
[0005] For high-solid content emulsions prepared by physical emulsification, it is difficult to achieve 65% solid content of the emulsion. Even if it reaches 65%, there are problems such as high viscosity, poor stability, and one-sided process application range.
CN102702755A synergistically prepares a 60-70% high-solid paraffin emulsion by adding amphiphilic nanoparticles, polymer stabilizers and small molecule surfactants, but its method is only for paraffin emulsions, and the scope of application is narrow; CN102600647B uses fatty alcohol The introduction of fatty acid esters into the emulsion and the addition of anionic surfactants after the emulsification process result in a fatty alcohol emulsion with a solid content of 25-40%, but when this process is used to prepare an emulsion with a solid content greater than 60%, oil-water separation will occur problem; US8080586 introduced the preparation of self-emulsified products with a solid content greater than 90% with carbomer, alkyl glycosides, higher fatty alcohols, and partial glycerides of monoglycerides, but the stability was poor, which affected its application value; CN1738603A introduced more Based on the solubilization of polar lipophilic substances by hydroxyl compound matrix and carbohydrate matrix, a transparent emulsion with a solid content greater than 50% can be prepared, but its viscosity is relatively high, and its application range is limited

Method used

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  • A kind of preparation method of stable high solid content oil-in-water emulsion
  • A kind of preparation method of stable high solid content oil-in-water emulsion
  • A kind of preparation method of stable high solid content oil-in-water emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] Add 13g of white oil, 17g of C10 alcohol, 29.69g of carnauba wax, and 0.1g of ethylene glycol laurate into a beaker, and slowly raise the temperature to 90°C. Mix 5g of disodium hydrogen phosphate-citric acid buffer solution (0.01mol / L) as the pretreatment phase inversion solution X, keep 1 / 3 mass of the pretreatment phase inversion solution X as X-I for later use, in the remaining pretreatment phase inversion solution X Add 5g of sodium ethylbenzenesulfonate as the phase inversion liquid Y for later use, heat both to 85°C, stir at 50r / min, keep warm for later use; maintain the stirring speed of the oil phase at 50r / min, slowly Add pretreatment phase-inversion liquid X-I; continue stirring at a stirring speed of 350r / min, quickly add phase-inversion liquid Y at 20mL / min, stop stirring after adding liquid, let stand for 1min, add 0.1g polyoxyethylene (20 ) sorbitan tristearate, and then quickly start stirring to the original speed of 350r / min, circulate once, and keep wa...

Embodiment 2

[0042] Add 32g of C14-C16 alcohol, 13g of beeswax, 0.5g of sorbitan monostearate into a beaker, slowly raise the temperature to 120°C, and keep it warm for 20min after it is completely melted; then add 24.7g of deionized water and 0.1g Mix phthalic acid-hydrochloric acid buffer solution (0.1mol / L) as the pretreatment phase inversion solution X, keep 1 / 3 mass pretreatment phase inversion solution X as X-I for later use, add 0.1 to the remaining pretreatment phase inversion solution X g sodium dodecylbenzenesulfonate is used as the phase inversion liquid Y, both are heated to 75°C, the stirring speed is 300r / min, and the temperature is kept for use; the stirring speed of the oil phase is maintained at 300r / min, and slowly mixed at 5mL / s Add pretreatment phase-inversion liquid X-I; continue stirring at a stirring speed of 500r / min, quickly add phase-inversion liquid Y at 50mL / min, stop stirring after adding liquid, let stand for 5min, add 0.5g triethanolamine sodium oleate dropwis...

Embodiment 3

[0044] Add 20g of liquid wax, 28.45g of rubber protective wax, and 3.5g of glycerol monolaurate into a beaker, slowly raise the temperature to 100°C, and keep it warm for 15 minutes after it is completely melted; then oxidize 14g of deionized water and 3.5g of borax-hydroxide Mix sodium buffer solution (0.01mol / L) as pretreatment phase inversion solution X, keep 1 / 3 mass of pretreatment phase inversion solution X as X-I for later use, add 2.5g hexadecyl to the remaining pretreatment phase inversion solution X Sodium diphenyl ether disulfonate is used as the phase inversion liquid Y, both are heated to 80°C, the stirring speed is 100r / min, and the temperature is kept for use; the stirring speed of the oil phase is maintained at 100r / min, and the former is slowly added at 3mL / s. Process phase inversion liquid X-I; continue stirring at a stirring speed of 1000r / min, quickly add phase inversion liquid Y at 40mL / min, stop stirring after adding liquid, let stand for 3min, and add 2.5...

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Abstract

The invention relates to a special emulsification method. According to the method, stirring is stopped in the emulsification process, a mixture of W / O and little water or W / O / W is formed through standing, stirring is started, instantaneous inner shear force in unit area is increased, and formation of the O / W emulsion is facilitated; meanwhile, a hydrophilic emulsifier is dropwise added into the mixture during standing, the formation of the O / W emulsion is facilitated, and full wrapping and dispersing of droplets are facilitated to make the emulsion more stable; in the post-processing stage, the volume of the non-oil phase is increased by adding a stabilizer. By means of the preparation method, the problem that the viscosity of the emulsion with the high solid content is high is solved; meanwhile, the stability of the emulsion with the high solid content is improved, the preparation method is widely suitable for emulsification of hydrocarbons and oxygen-containing derivatives thereof, and the application range is wider.

Description

technical field [0001] The invention relates to a preparation method of a stable oil-in-water emulsion with high solid content. Since the emulsion belongs to fine chemicals, the present invention belongs to the technical field of fine chemicals. Background technique [0002] In recent years, high solid content emulsions are being used more and more. In the paint industry, high-solid emulsion coatings are gradually replacing solvent-based coatings because they do not contain organic solvents, do not pollute the environment, dry and form films quickly, and have fewer gluing times; in the paper industry, high-solid emulsions can be used as White water defoamer is used, and can be diluted online according to the degree of foam, which not only reduces the amount and cost, but also improves the working efficiency of the paper machine; in the food industry, high-solid emulsion is more convenient to carry and transport, in line with today's fast pace More importantly, high-solid e...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D191/06C09D191/00C09D7/12
Inventor 方放刘杨吴飞曹添单珍
Owner JIANGSU SIXIN SCI-TECH APPL RES INST CO LTD