HU200555B - Conditioning and hydrating cream and process for producing same - Google Patents

Abstract

Cream Lipophilic Agents, Fat Materials, water, emulsifiers, preservatives, and contains fragrances in which a lipophilic agent, fatty substance, water, and oil / water emulsifier, preservative and an oil-in-water emulsion consisting of a buffer and a from fat, water, and oil / oil emulsifier a water-in-oil emulsion for a particle size of 10-50 µm in the form of a dispersed mixture and oil-in-water emulsion and water-in-oil emulsion weight ratio (50- -55) :( 45-50 ,.

Description

The present invention relates to a skin nourishing and moisturizing cream comprising lipophilic active ingredients, fats, water, emulsifiers, preservatives and fragrances. The invention also encompasses a process for preparing the cream.

There are many cosmetic agents, such as creams or ointments, especially so-called skin nourishing and moisturizing creams, which contain as an ingredient an oil / water emulsion or a water / oil emulsion. The problem with such creams is always that they do not supply the skin with different amounts of fat and / or moisture, or different skin types, according to their specific needs. Generally, too much or too little gaseous, nutrient or moisture is applied to certain areas of the skin relative to the need for skin fat and / or moisture. Nor does it help to apply a cream containing one type of emulsion first and then the other.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a cosmetic agent that can simultaneously treat different skin surfaces according to their specific zeir, nutrient and / or moisture requirements.

The present invention relates to a cosmetic product in the form of a cream, characterized in that it is an oil-in-water emulsion consisting of a lipophilic active ingredient, a water-in-oil-in-water emulsifier and a water-in-water emulsion in a fat, water and water / oil emulsifier. oil-in-oil emulsion in the form of a mixture dispersed in a particle size of 10-50 µm and a weight ratio of the oil-in-water emulsion to the water-in-oil emulsion (50-55): (45-50).

The cream, which contains a finely dispersed mixture of the two types of emulsion, can be used to produce a suitable oil / water or water / oil hydrolipid film, depending on the moisture content of the boron at different locations and the skin type.

The present invention also relates to a process for the preparation of a cosmetic in the form of a cream, characterized in that the first step of the process comprises preparing an oil-in-water emulsion having a particle size of 20-70 µm in a known manner, 10-20 parts by weight 10-15 parts by weight of an oil / water emulsifier, preferably stearyl alcohol and polyoxyethylene stearate, and 9-13 parts by weight of a lipophilic active ingredient, a preservative, a buffer and 1-3 parts by weight of an oil / water emulsifier, preferably carboxyvinyl polymer, and 50-60 parts by weight of water, in a second step, a water-in-oil emulsion having a particle size of 20-70 µm is prepared in a known manner, 45-48 parts by weight of fatty material, preferably 46-49 parts by weight of water mixed with beeswax melt, in the third step a particle size dispersion of 10-50 µm is prepared at room temperature. at a temperature of 1,000 to 3,000 Pa under vigorous stirring, the first step is added to the oil-in-water emulsion formed in the second step in a known step-by-step oil-in-oil emulsion.

If it would seem obvious, given the different needs of the skin, that simply mixing the two types of emulsion to produce the cream to meet the aforementioned needs of the skin would not be possible without further ado. This is because the two types of emulsion have not remained stable side by side but, depending on the ingredients used, soon after preparation one type of emulsion has been transformed into another type of emulsion, so that only one type of emulsion remains in the cream produced.

However, when the two emulsion types are combined at room temperature under vacuum, in a particularly gentle manner, however, in a very vigorously agitated vessel, a very fine dispersion of particle size of 10-50 µm, preferably 10-15 µm, is finally obtained. In the cream thus prepared, the two types of emulsion remain unchanged. This emulsion system remains stable either when diluted, for example when diluted with the liquid phase. It is believed that both particle size and the action of the emulsifiers are important for the stability of the emulsion system. Essentially, in the preparation of the cosmetic agent of the invention, the emulsions to be added are dispersed and not homogenized.

The two emulsions were combined under vacuum at 1000-3000 Pa. The speed of mixing, as known to those skilled in the art, will depend on the mixing apparatus used and will be determined by itself.

Oil-in-water and water-in-oil emulsions may be prepared in a known manner using known emulsifiers (Othmer, Kirk, Encyclopedia of Chemical Technology, 3rd Edition, 1979, John Wiley and Sons, New York, Vol. 8, 900-930). and Dr. Neumüller, Otto-Albrecht, Rompps Chemie Lexikon, 7th Edition, 1973, Franck'sche Verlagshandlung, Stuttgart, pp. 1009-1013). The waxes, emulsifiers and other additives used in such emulsions are identical to those commonly used in emulsified skin care products. (Dr. Neumüller, Otto-Albrecht: Rumps Chemie Lexikon, 7th Edition,

Franck’sche Verlagshandlung Stuttgart, 1427-1428. side.)

The oil-in-water emulsion used in the cosmetic product of the present invention may consist of lipophilic active ingredients, fats, oil / water emulsifiers, water and preservatives.

As lipophilic active ingredients, moisture retaining factors (hydrocomplexes) such as glycerol, polyethylene glycols or amino acid blends, puroba oil (jojoba oil), vitamins (preferably vitamins A and E, fortifying (vital) complexes (e.g. ), enzymes, plant extracts (such as extracts of Hammamelis or Chamomile) or proteins (such as collagen) may be used. Suitable oil / water emulsifiers are, for example, stearyl alcohol, polyoxyethylene stearates (such as NYRJ), amphoteric surfactants (such as Amphoterin) or sorbitan fatty acid esters (e.g. Span). and carboxyvinyl polymers (such as the Carbopol brand). the aqueous phase may further comprise buffering agents such as ethylenediamine-N, N, N ', N', -tetraacetic acid disodium) and preservatives such as chloroquinol, paraben or benzalkonium chloride.

In the oil-in-water emulsion, the proportion of the internal emulsion is preferably 30 to 49% by weight, and the internal emulsion preferably has a particle size of 10 to 50 µm. During the dispersion of the two phases, the particles are comminuted once more.

A water-in-oil emulsion suitable for use in the cosmetic product of the present invention consists of a fatty substance, an oil / oil emulsifier and water. The water-in-oil emulsion may use hydrocarbons such as paraffins and petroleum jelly, synthetic, vegetable and animal oils, and waxes (such as olive oil, peanut oil, fine bone oil, almond oil, lanolin, beeswax or sunflower seed oil) as fats. water and water / oil emulsifiers include wool grease (lanolin), fatty alcohols such as cetyl alcohol, myristyl alcohol, stearyl alcohol or ceryl alcohol, fatty acid esters such as beeswax (Cera alba or wax alcohol esters or mixed aliphatic esters, ).

The proportion of internal emulsion in the oil-in-oil emulsion is preferably 30 to 49% by weight, and the internal emulsion preferably has a particle size of 20 to 70 µm. During the dispersion of the two phases, the particles are comminuted once more, with a particle size of less than 50 µm in the final product.

• 1

The oil-in-water emulsion and water-in-oil emulsion mixing ratio (50-55): (45-50).

The finely dispersed system is still

materials such as the Crematest series branded fragrances one of (manufactured by Dragoco Spezialfabrik for Consensual rierte Riech- und can be combined. Aroinastoffe GmbH) The skin is nourishing made in the form of a cream, according to the invention a cosmetic product is, for example of the following composition may: Tolerance Purobaolaj Cera alba 3 massX 5-10tőmegX (beeswax) consisting of a mixture of aliphatic esters 1 massX 1-5 wt emulsifier stearyl 1 massX 1-3 wt -alcohol hydrocarbon, preferably 4 massX 4-8 massX vaseline carboxy-VI- nil polymerized 30 massX 30-50tömegX hydrolyzate poly (oxy-ethylene 1 massX ene) stearate EDTA dinát- 3 massX 2-5 wt salt of 1 massX chloro-kinaldol cleaned, 1 massX deionized water 52 massX 30-55tömegX perfume oils 1 massX

The invention is illustrated by the following examples.

Example 1

(a) Preparation of oil / water emulsion

300.00 g of purified deionized water are dissolved in 10.00 g of disodium salt of ethylenediamine-N, N, N ', N'-tetraacetic acid and 10.00 g of chloroquinaldol and mixed with 10.00 g of carboxyvinyl polymer ( Carbopol).

This mixture was added with vigorous stirring to 80.00 g of petroleum jelly (Deutsches, Arzneibuch, 8th edition / 1976 / quality), 40.00 g of stearyl alcohol, 30.00 g of polyoxyethylene stearate (MYRJ). ) and a melt of 50.00 g of puroba oil. The mixture is stirred until an emulsion of 20-70 µm particle size is formed.

b) Preparation of water / oil emulsion

228.0 g of purified deionized water was added to a melt of 220.00 g of petroleum jelly, 10.00 g of a mixture of aliphatic esters, marketed as Dehymuls, and 10.00 g of Cera alba. The mixture

Stir until an emulsion of 20-70 µm particle size is formed.

c.) Production of cream

The water / oil emulsion is added to the oil / oil emulsion with vigorous stirring at room temperature and under a vacuum of 1333 Pa.

Stirring is continued until a dispersion of 10-50 µm particle size is formed. The vacuum is then removed and 2.00 g of the Crematest series fragrance are added to the product while stirring.

Example 2

The same procedure is used as in Example 1, but the active ingredient used instead of puroba oil is 50.00 g of olive oil, paraffin oil or peanut oil having a viscosity of 50-70 mPa.s.

Claims (2)

PATENT CLAIMS A skin nourishing and moisturizing cream comprising 5 to 10% by weight of a lipophilic active ingredient, preferably puro oil, olive oil, paraffin oil or peanut oil, 30 to 40% by weight of fat, preferably petrolatum, 50 to 55% by weight water, 8 to 12% by weight emulsifier, preferably stearyl alcohol, polyoxyethylene stearate, carboxyvinyl polymer and beeswax, a preservative, preferably chloroquinaldol, a buffer and a fragrance, characterized in that the lipophilic active ingredient, fat, water, oil / water emulsifier , an oil-in-water emulsion consisting of a preservative and a buffer, and a water-in-oil emulsion consisting of a fatty substance, water and water / oil emulsifier, in the form of a dispersed mixture of 10-50 µm particle size; weight ratio of emulsion in oil (50-55) :( 45-50). Process for the preparation of the cream according to claim 1, characterized in that in the first step of the process, an oil-in-water emulsion with a particle size of 20-70 µm is prepared in a known manner, 10-20 parts by weight of fat, preferably petroleum jelly / emulsion emulsifier, preferably stearyl alcohol and polyoxyethylene stearate, and a preservative, buffer and 9-13 parts by weight of a lipophilic active ingredient. In a second step, a mixture of 1-3 parts by weight of an oil / water emulsifier, preferably a carboxyvinyl polymer and 50-60 parts by weight of water, is used to form a water-in-oil emulsion with a particle size of 20-70 ounces. and 3-9 parts by weight of water / oil emulsifier - preferably 46-49 parts by weight of water mixed with beeswax melt in a third step to form a dispersion of 10-50 µm particle size at room temperature in a vacuum of 1000 to 3,000 Pa. the water-in-oil emulsion formed in the second step is added to the dispersion in a water-in-oil emulsion, added in a known manner in the fourth step.