CN1732889A - Emulsion deodorant and preparation method thereof - Google Patents

Abstract

The invention discloses an emulsion deodorant and its preparation process, wherein the composition comprises nano zinc oxide as the main deodorizing active compounds, an oily phase portion including emulsifying agent and grease discontinuous phase, an aqueous phase portion including emollient, thickening agent, preservative agent, humectant and solvent deionized water, as well as a small amount of addition agents such as antibacterial agent and condiment.

Description

Emulsion deodorant and preparation method thereof

field of invention

The invention relates to an emulsion deodorant, which is an emulsion composition with nano-zinc oxide as the main deodorant active substance; in particular, it relates to an oil/water type deodorant composition and its preparation method. It belongs to the technical field of preparation of cosmetic and skin care chemical preparations.

Background of the invention

It is generally believed that human body odor is caused in part by irritating fatty acid compounds produced by the interaction of microorganisms with sweat gland secretions, and one method of controlling this odor, in addition to washing, is the topical application of deodorant compositions on the body.

Deodorants are preparations that are used to mask odors or to prevent the development of odors by reducing the local microbial population. In the deodorant market, products based on aluminum salts or zirconium salts are dominant. These products are used to prevent or control perspiration on the skin surface, especially in the underarms, while also providing a detectable degree of deodorant effect. Deodorant compositions are available in a variety of product forms such as roll-ons, ointments, sticks, aerosols and pump sprays. However, all these forms of products have some common disadvantages, which are skin discomfort. More specifically, the presence of some volatile carriers, such as volatile silicones and ethanol, active and other ingredients in deodorants, has adverse effects on the user's skin, especially irritation. Irritation can be reduced by reducing the amount of active ingredient in the composition, or by reducing its penetration through the skin, but at the expense of deodorant efficacy. Therefore, the adverse effects of some products in the past often hinder the use of many consumers.

Lotion deodorants are a combination of chemicals commonly used to prevent or mask body odor associated with perspiration. It is in the form of an emulsion, that is, an oil/water (O/W) type dispersion emulsion. Lotion deodorants generally work better on the skin than other types of deodorants, leaving skin smoother and leaving hardly any residue after application. General emulsion deodorants contain deodorant substances such as Zn, Ca, Mg salts, zinc carbonate, zinc glycinate, zinc ricinoleate and some metal oxides, deodorant active substances such as antibacterial agents, fragrances and other odor masking substances. Solvents with which the compositions are usually combined include monohydric or dihydric alcohols, trihydric alcohols such as propylene glycol, glycerol, polypropylene glycol. But many of these lotion deodorants are not very gentle on the skin and are somewhat irritating to the skin.

Summary of the invention

The object of the present invention is to provide a low-irritation emulsion deodorant with deodorizing effect and a preparation method thereof.

The present invention is a kind of emulsion deodorant, and its composition and important percentage content are as follows:

A. Constituting the oil phase part:

(a). Emulsifier Polyoxyethylene (2) stearyl ether, polyoxyethylene (21) stearyl ether, PEG (20) - behenyl monolaurate, polyethylene glycol -4 - One or two of sorbitan stearate, PEG(20)-sorbitan stearate and PEG(20)-stearin glycerin; its content is 1-5;

(b) Grease dispersion phase One or two of isohexadecane, cyclomethicone, polypropylene glycol (15) stearyl ether, white oil, fatty acid, vaseline, beeswax; its content is 15-20%.

B. Constituting the water phase part

(a). Emollient polyoxyethylene (30) sorbitan ether, content 1-5%;

(b). Thickener xanthan gum, content 0.1-0.5%;

(c). Preservatives One or two of methylparaben and propylparaben; content 0.1-1.0%;

(d). Moisturizing agent One or two of squalane, glycerin, and propylene glycol, with a content of 1 to 5%;

(e). Solvent Deionized water, appropriate amount, and the weight ratio of the above-mentioned emulsified oil phase is: emulsified oil phase: water=1:5～1:10.

C. Deodorant actives fraction:

Nano zinc oxide glycerin dispersion liquid, the content is 6-8%.

D. Additive part:

(a). Antibacterial agent sodium N-lauroyl sarcosinate, plus 0.05-0.1%;

(b). Spice Isopropyl myristate, plus 0.01 to 0.1%.

A kind of preparation method of emulsion deodorant of the present invention is characterized in that having following preparation process and step:

a. First prepare the nano-zinc oxide glycerin dispersion liquid according to the above formula, weigh the nano-zinc oxide and glycerin in a ratio of 1:1 to 1:1.5, put them in a mortar and grind them fully until they are uniformly dispersed;

b. Select one or two of the above-mentioned emulsifiers, such as polyoxyethylene (2) stearyl ether and polyoxyethylene (21) stearyl ether, according to the above formula, and then select one or more of the above-mentioned dispersed phase oils Two types, such as isohexadecane, cyclomethicone and polypropylene glycol (15) stearyl ether, weighed according to the above formula, heated in a water bath at 70-80°C, dissolved, and then ground the above The nano-zinc oxide glycerin dispersion liquid is added to it, fully dispersed in a high-speed disperser, the speed of the disperser is 1000-1500rpm, and the dispersion time is 5 minutes;

c. Separately disperse xanthan gum evenly in propylene glycol, add polyoxyethylene (30) sorbitan ether, methylparaben, propylparaben, squalane, and finally add a certain amount of deionized water, Then heat in a water bath at 70-80°C and keep the temperature constant for 10 minutes;

d. Under the condition of heating in a water bath at 70-80°C, add the above-mentioned oil phase to the water phase solution, disperse in a high-speed disperser at a speed of 1000-1500rpm, and emulsify with a high-shear emulsifier after 5 minutes of dispersion Minutes, the speed of the emulsifier is 100rpm

e. Lower the temperature of the water bath to 65°C, continue to disperse at a constant temperature, and add the antibacterial agent N-lauroyl sarcosinate, and disperse for 1 minute;

f. Lower the temperature of the water bath to 35°C, continue to disperse at a constant temperature, then add an appropriate amount of spice isopropyl myristate, disperse for 1 minute, and wait for it to cool to room temperature to obtain an emulsion deodorant.

Because the method of the present invention adopts the nano-zinc oxide as the deodorizing active substance, and its average particle diameter is 50-80nm, it has a good deodorizing effect. The prepared emulsion deodorant of the present invention is a kind of oil/water (O/W) type composition, adopts non-ionic emulsifier; Also suitably adds antibacterial agent and spices in addition, causes emulsion deodorant to have more antiseptic Disinfectant and has a cosmetic fragrance. The emulsion deodorant prepared by the method of the invention alleviates the irritation to the skin to a large extent, leaves no residue, and has a soft and smooth feeling to the skin.

Detailed ways

Embodiments of the present invention will now be described below.

Example 1

The formula of the emulsion deodorant in the present embodiment is as follows: (weight %)

A. Constituting the oil phase part:

Emulsifier: polyoxyethylene (2) stearyl ether 3%

                                                                                                             

Dispersed Phase: Isohexadecane 10%

  Cyclomethicone and Polypropylene Glycol (15) Stearyl Ether 8%

B. Constituting the water phase part:

Emollient: polyoxyhexacene (30) sorbitan ether 4.0%

Thickener: Xanthan Gum 0.2%

Antiseptic: Methylparaben 0.3%

                                                                         

Moisturizer: Squalane 5.0%

Solvent deionized water: the balance, the weight ratio with the above-mentioned emulsified oil phase is: emulsified oil phase: water=1:5;

C. Deodorant actives fraction:

Nano Zinc Oxide Glycerin Dispersion 7.0%

D. Additive part:

Antimicrobial agent: Sodium N-lauroyl organophosphate Add 0.05%

Fragrance: Isopropyl Myristate Add 0.05%

The preparation steps of the emulsion deodorant of the present embodiment are described as follows:

1. First prepare the nano-zinc oxide glycerol dispersion, weigh the zinc oxide and glycerin with an average particle size of 50-80nm at a ratio of 1:1, put them in a mortar and grind them until they are evenly dispersed;

2. Weigh the emulsifier polyoxyethylene (2) stearyl ether and polyoxyethylene (21) stearyl ether according to the above formula, and then select the above-mentioned dispersed phase grease isohexadecane, cyclomethicone and poly Propylene glycol (15) stearyl ether, after weighing according to the above formula, put it in a 70-80°C water bath and heat it. After melting, add the uniformly ground nano-zinc oxide glycerin dispersion into it, and fully dissolve it in a high-speed disperser. Dispersion, the speed of the disperser is 1200rpm, and the dispersion time is 5 minutes;

3. Separately disperse xanthan gum evenly in propylene glycol, add polyoxyethylene (30) sorbitan ether, methyl paraben, propyl paraben, squalane, and finally add a certain amount of deionized water, Then heat it in a water bath at 80°C and keep it warm for 10 minutes;

4. Under the condition of heating in a water bath at 80°C, add the above-mentioned oil phase to the water phase solution, and disperse in a high-speed disperser at a speed of 1200rpm. After dispersing for 5 minutes, emulsify with a high-shear emulsifier for 1 minute. The speed is 100rpm;

5. Reduce the temperature of the water bath to 65°C, continue to disperse at a constant temperature, and add the antibacterial agent N-lauroyl sarcosinate, and disperse for 1 minute;

6. Lower the temperature of the water bath to 35°C, continue to disperse at a constant temperature, then add an appropriate amount of spice isopropyl myristate, disperse for 1 minute, and wait for it to cool to room temperature to obtain an emulsion deodorant.

The emulsion deodorant prepared in this example has uniform shape, uniform color, liquid crystal phase, good deodorant effect, good touch to the skin, no irritation, and no residue after application. After high temperature and low temperature stability tests, it is very stable and does not delaminate.

Example 2

The preparation steps of this example are exactly the same as those of the above-mentioned Example 1, the difference is: ① In the part B that constitutes the water phase, glycerin is used as the moisturizing agent instead of squalane; ② In the third step of the preparation step, a water bath is used The heating temperature was 70°C. Finally, an emulsion deodorant is produced.

The emulsion deodorant prepared in this example has slightly poor rollability and relatively high viscosity, but has a good deodorizing effect at room temperature. After high temperature and low temperature stability test, its stability performance is good without delamination. Good touch to the skin, no special irritation.

Example 3

This embodiment is proposed as a comparative test of the comparative example.

The preparation steps of this embodiment are basically the same as the above-mentioned embodiment 1.

The difference is: ① the emulsifier in part A uses polyoxyethylene (2) stearyl ether, and the dosage is 5%; ② in part B, the moisturizing agent uses glycerin instead of squalane; ③ deodorant In the part C of the active material, the nano-zinc oxide is not ground together with glycerin to form a dispersion, but the nano-zinc oxide is directly added to the oil phase to disperse in the oil phase, and then added to the water phase for emulsification. ④ In the third step of the preparation step, the heating temperature in a water bath is 70°C.

The emulsion deodorant prepared in the comparative example of this embodiment has a poor form, and fine granular substances can be seen on the surface of the product. The emulsion deodorant composition has stable performance at normal temperature and shows a good deodorizing effect, but high temperature And low temperature tests found that its performance is unstable and easy to delaminate. It is acceptable to touch the skin and has no special irritation.

Claims (2)

1. emulsion deodorant, its constituent and weight percent content thereof are as follows:

A. constitute the oil phase part:

(a). a kind of in the stearic alcohol ether of emulsifier polyoxyethylene (2), the stearic alcohol ether of polyoxyethylene (21), PEG (20)-dehydration mountain alcohol mono laurate fat, Polyethylene Glycol-4-anhydrous sorbitol stearate, PEG (20)-anhydrous sorbitol stearate and PEG (the 20)-glyceryl stearate or two kinds; Its content is 1～5;

(b) a kind of in the stearic alcohol ether of oils and fats decentralized photo 2-Methylpentadecane, cyclomethicone and polypropylene glycol (15), white oil, fatty acid, vaseline, the Cera Flava or two kinds; Its content is 15～20%.

B. constitute aqueous portion

(a). emollient polyoxyethylene (30) anhydrous sorbitol ether, content 1～5%;

(b). thickening agent HANSHENGJIAO, content 0.1～0.5%;

(c). a kind of in antiseptic Methyl p-hydroxybenzoate, the propylparaben or two kinds; Content 0.1～1.0%;

(d). a kind of in wetting agent squalane, glycerol, the propylene glycol or two kinds, content 1～5%;

(e). solvent deionized water, the part by weight of content and above-mentioned emulsifying oil phase is: the emulsifying oil phase: water=1: 5～1: 10.

C. deodorant activities material part:

Nano zine oxide glycerol dispersion liquid, content 6～8%.

D. additive part:

(a). antibacterial N-sodium lauroyl sarcosine adds 0.05～0.1%;

(b). spice myristic acid isopropyl ester adds 0.01～0.1%.

2. the preparation method of a kind of emulsion deodorant as claimed in claim 1 is characterized in that having following preparation process and step:

A. at first by above-mentioned formulated nano zine oxide glycerol dispersion liquid, after nano zine oxide and glycerol are weighed with 1: 1～1: 1.5 ratio, be put in fully to be ground in the mortar and be uniformly dispersed.

B. select a kind of of mentioned emulsifier or two kinds, as stearic alcohol ether of polyoxyethylene (2) and the stearic alcohol ether of polyoxyethylene (21), by above-mentioned prescription, select above-mentioned decentralized photo greasy a kind of or two kinds again, as the stearic alcohol ether of 2-Methylpentadecane, cyclomethicone and polypropylene glycol (15), after weighing by above-mentioned prescription, be placed on altogether in 70～80 ℃ of water-baths and heat, after melting, again the uniform nano zine oxide glycerol of above-mentioned grinding dispersion liquid is added wherein, fully disperse in high speed dispersor, dispersing speed is 1000～1500rpm, and jitter time is 5 minutes;

C. in addition HANSHENGJIAO is dispersed in the propylene glycol, adds polyoxyethylene (30) anhydrous sorbitol ether, Methyl p-hydroxybenzoate, propylparaben, squalane, add a certain amount of deionized water at last, in 70～80 ℃ of water-baths, heat then, and be incubated 10 minutes;

D. under 70～80 ℃ of condition of water bath heating, above-mentioned oil phase is joined in the aqueous phase solution, disperse in high speed dispersor, rotating speed is 1000～1500rpm, disperse after 5 minutes, and reuse high-shear emulsion machine emulsifying 1 minute, the mulser rotating speed is 100rpm;

E. bath temperature is reduced to 65 ℃, continue under constant temperature, to disperse, add antibacterial N-sodium lauroyl sarcosine in addition, redispersion 1 minute;

F. bath temperature is reduced to 35 ℃, continue under constant temperature, to disperse, add an amount of spice isopropyl myristate subsequently again, disperse to treat that it is cooled to room temperature after 1 minute, promptly get emulsion deodorant.