Polyglycerol compound emulsifier and preparation method thereof

Abstract

The invention discloses a polyglycerol compound emulsifier and a preparation method thereof, and aims to provide a compound emulsifier that does not contain PEG and EO surfactants, does not cause skindamage when applied to a product, and has mild, cleaning, moisturizing, breathable and oil-water general effects and the like, and comprises the following components (by weight): 18.0-22.0% of polyglycerol-10-stearate, 10.0-18.0% of cetanol, 45.0-55.0% of polyglycerol-10 laurate and 10.0-20.0% of glyceryl stearate. The HLB value of the emulsifier is 9-13. The invention belongs to the technical field of cosmetics.

Description

technical field [0001] The invention discloses a compound emulsifier, in particular a polyglycerin compound emulsifier, and also discloses a preparation method of the emulsifier. Background technique [0002] Emulsifier is a substance that can improve the surface tension between the various constituent phases in the emulsion to form a uniform and stable dispersion system or emulsion. Its molecules have both hydrophilic groups and lipophilic groups, which gather on the oil / water interface, which can reduce the interfacial tension and reduce the energy required to form an emulsion, thereby increasing the energy of the emulsion. [0003] In order to avoid the delamination of cosmetics and the instability of the system, it is usually necessary to add emulsifiers during the preparation of emulsified cosmetics. In the existing cosmetics, PEG-20 methylglucose sesquistearate, PEG-20 stearate, PEG-100 stearate, etc. are all PEG (polyethylene glycol), spermaceti Steareth 6, cetearet...

AI Technical Summary

Problems solved by technology

In the existing cosmetics, PEG-20 methylglucose sesquistearate, PEG-20 stearate, PEG-100 stearate, etc. are all PEG (polyethylene glycol), spermaceti Steareth 6, ceteareth 25, etc. are used as emulsifiers. These emulsifiers contain EO (ethylene oxide), and the emulsification stability of their products is relatively weak, the addition amount is high, and the compounding cost performance is relatively low Low, and contains dioxane, which is irritating to the skin and can easily cause skin allergies. Long-term use may cause cancer risk

[0004] Polyglycerol emulsifiers have the advantages of being less irritating to the skin, but usually have the following problems when their single component is used as an emulsifier. For example, the HLB value of polyglycerol-10 stearate is 9. Although microemulsions can be formulated, their moisturizing Strong resistance, single emulsification performance is relatively poor, the product demulsification is faster, it needs to be compounded with high HLB value polyglycerol ester emulsifier for use, and the product validity period is less than 1 year

Wax alcohol O / W type emulsion plays a stabilizing and thickening role in the base oil phase; the HLB value of polyglycerol-10 laurate is 15, its single-use cleaning ability is strong, and the prepared emulsion has bubbles, but under low temperature conditions, Poor stability, easy to crystallize, need to be compounded with polyglycerin emulsifier with low HLB value

The HLB value of glyceryl stearate is 3.8 and it is used alone to form a W / O emulsion. Under low temperature conditions, the stability is poor and it is easy to break the emulsion. This caused great trouble to the researchers during the experiment.

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