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Nano wax emulsion

A wax emulsion and nano technology, applied in the field of wax emulsion preparation, can solve the problems of inability to reach nano-scale emulsion, reduced use efficiency, uneven dispersion, etc., and achieve narrow particle size distribution, reduce addition amount, and improve compatibility. Effect

Active Publication Date: 2014-03-12
GUANGDONG LEPUTAI NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0013] In the wax emulsion prepared by the above patents, its particle size is large, the dispersion is not uniform, and it cannot reach the nano-emulsion, which greatly reduces the use efficiency of its wax.
At the same time, in the wax index during the preparation process, its melting point is lower than 100 ° C. Therefore, the defects in the index of the prepared wax emulsion make it have certain limitations in the use process.

Method used

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preparation example Construction

[0053] see figure 1 , the present invention also provides the preparation method of above-mentioned nano-wax emulsion, comprises the steps:

[0054] (1) Oil phase dispersion mixture:

[0055] Add measured polyethylene wax, montan wax, polyethylene oxide and co-solvent to the high-pressure reaction kettle in sequence to heat and melt, set the heating temperature at about 110-120°C, stir at a speed of 100-200rpm, and stir for 0.5-1.0h , to make it completely dissolve; keep the temperature constant, under low-speed stirring (stirring speed 100-200rpm), add metered ionic emulsifiers and non-ionic emulsifiers to the reaction kettle in turn to make them uniformly dispersed in the wax. Oil phase dispersion mixture.

[0056] (2) Water phase dispersion mixture:

[0057] Put the weighed deionized water, diffusing agent, and stabilizer into the emulsification reaction kettle in sequence, set the temperature at 95-100°C and rotate at 200-300rpm to dissolve and heat up, and stir for 0.5...

Embodiment 1

[0063] Accurately weigh 28.50% polyethylene wax, 9.50% montan wax, 1.00% polyethylene oxide and 0.45% co-solvent (propylene glycol) into the autoclave in sequence, heat up to melt at about 110-120°C, and stir at a speed of 100- 200rpm, stirring time 0.5-1.0h, to make it completely dissolved; under constant temperature and low-speed stirring (stirring speed 100-200rpm), add metered ionic emulsifier (sodium dodecylbenzenesulfonate) to the reaction kettle in sequence 2.65% and non-ionic emulsifier (stearic acid monoglyceride) 3.12%, so that it is uniformly dispersed in the wax to obtain a uniform oil phase dispersion mixture;

[0064] Add 19.00% of the weighed deionized water, 0.70% of the diffusing agent (sodium methylene bis-naphthalene sulfonate) and 0.068% of the stabilizer (stearic acid) into the emulsification reaction kettle in sequence, and set the temperature at about 95-100°C Under the condition of 200-300rpm and rotating speed, dissolve and heat up, and stir for 0.5-1....

Embodiment 2

[0068] Accurately weigh 28.00% of polyethylene wax, 14.00% of montan wax, 0.80% of polyethylene oxide and 0.35% of co-solvent (polyethylene glycol) into the autoclave in sequence, heat up to melt at about 110-120°C, and stir The speed is 100-200rpm, and the stirring time is 0.5-1.0h to make it completely dissolved; under constant temperature and low-speed stirring (stirring speed 100-200rpm), add the measured ionic emulsifier (hexadecyl trimethyl ammonium chloride) 2.40% and non-ionic emulsifier (nonylphenol polyoxyethylene ether) 4.30% to make it uniformly dispersed in the wax to obtain a uniform oil phase dispersion mixture;

[0069] Add 25.20% of the weighed deionized water, 0.70% of the diffusing agent (sodium lignin sulfonate) and 0.068% of the stabilizer (potassium stearate) into the emulsification reaction kettle in sequence, set the temperature at about 95-100°C and the speed Under the condition of 200-300rpm, dissolve and heat up, and stir for 0.5-1.5h to prepare the ...

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Abstract

The invention provides nano wax emulsion which comprises the following components: polyethylene wax, montan wax, polyethylene oxide, cosolvent, ionic emulsifying agent, non-ionic emulsifying agent, dispersing agent, stabilizing agent, pH (potential of hydrogen) modifier and deionized water. The invention further provides a preparation method for the nano wax emulsion, the preparation method comprises the steps of (1) preparing oil-phase dispersing mixture, (2) preparing water-phase dispersing mixture, (3) preparing nano wax emulsion, and then finally obtaining high melting point and high solid content nano wax emulsion of which the wax content is 30-48%. The wax emulsion prepared in the invention solves the problem that high melting point wax is hard to emulsify; the wax content can reach 30-48%; and additive amount of the emulsifying wax in the using process and production cost are reduced, meanwhile, the prepared wax emulsion has good stability and narrow particle diameter distribution and is little influenced by multivalent metal ions; and the average particle diameter is 50-120 nm, and the nano wax emulsion is convenient for storage and transportation and can be used in continuous industrial production.

Description

【Technical field】 [0001] The invention belongs to the technical field of wax emulsion preparation, and relates to a nano wax emulsion, in particular to a nano wax emulsion with a high melting point and a high solid content. 【Background technique】 [0002] Wax emulsion is a homogeneous fluid containing wax and water made under the action of external mechanical force by means of directional adsorption of emulsifier, so it does not need to be heated and melted or dissolved with solvent when used, and it is easy to mix with other substances in aqueous solution Or the compound use of emulsion has the advantages of safety, high efficiency, economy and environmental protection, and is a chemical product with a wide range of uses. According to the difference of effective wax content, its range of application is different: Generally, low-concentration wax emulsions are used as latex product additives in the pharmaceutical industry, and used as fruit preservation in agriculture; while...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L91/06C08L71/00C08J3/03
Inventor 李德永羊辉李绍昌张海清韩昌哲
Owner GUANGDONG LEPUTAI NEW MATERIAL TECH
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