DE2408663C2 - - Google Patents

Description

The invention relates to thixotropic water-in Oil emulsions with a high proportion of inner phase, the non-Newton show flow behavior for the field of cosmetics, nour detergents, pharmaceuticals and household cleaning agents.

Under the designation "non-Newtonian liquids" Liquids with thixotropic or pseudoplastic character stood. By definition, these liquids have their own that their apparent viscosity changes with the shear rate change, that is, when these liquids are under using low shear rates they look like extremely viscous liquids or substances; however, the pump speed and thus the The shear rate increases, so the liquid shows the phenomenon the "shear thinning" and then behaves like a low-viscosity  Liquid.

With the numerous emulsions in the fields of cosmetics, food, pharmaceuticals and household use fin , they are always emulsions with low or medium Rem internal phase content. In addition, according to the state of the Engineering emulsions become unstable when their internal phase exceeds 75%.

DE-OS 16 44 942 already contains emulsions with a high proportion inner phase known.

The thixotropic emulsions described in this patent application which are at rest was the properties of a solid and under the influence of Powers show the properties of a liquid, they have advantages listed under the following keywords:

1. Adhesion-free

The emulsions do not stick or adhere the container walls or other surfaces.

2. Viscosity

The apparent rest viscosity is greater than 1000 cP and is generally in the range of 10,000 to 100,000 cP or above, preferably 50,000 to 100,000 cP or above. Under the influence of high shear forces, however, they flow with a vis viscosity that approximates that of the liquid phases. At the Ab the shear forces set the emulsion back almost instantly original, apparent rest viscosity. The hysteresis loop is very narrow.

3. Temperature stability

Temperature increases only have one little influence on the viscosity, unless the critical Sta bility temperature is reached; at this point the emul breaks sion and separates into their liquid components. this makes possible  the application of a wide temperature range.

4. Shear stability

The emulsions can be repeated one Be subjected to shear without degradation, so unless the critical shear point is reached. At this point breaks the emulsion. However, the critical shear point is sufficient high enough to handle ordinary pumping and handling, even at to ensure high speeds.

5. Quality control

It is due to these emulsions the lack of a "gel" structure easily, approaches with identical Reproduce properties.

6. Solids content

The emulsions flow even at high Solid content well, since it covers a wide range between the Quiescent viscosity and viscosity under the influence of moderate shear possess powers.

In contrast to a very high percentage of solids (referred to volume) in the case of gels or slurries that need cement like mass, these emulsions can contain such solids suspend their inner phase while the outer phase Flow behavior determined or the flowability guaranteed.

However, the emulsions of DE-OS 16 44 942 are in the field of Limited fuel. Other differences from the be Known emulsions result from the following description.

The invention relates to a stable, thixotropic emulsion which, when at rest, has the properties of a solid and, under the action of forces, the properties of a liquid, containing at least 80% by volume of the inner disperse phase, and an emulsifier, characterized in that
that it is free of thickening or gelling agents,
that it is a water-in-oil emulsion which contains water or mixtures of water with ethylene glycol, diethylene glycol, propylene glycol or dipropylene glycol as the inner phase and
that the emulsion contains at least one ingredient as a food or cosmetic, pharmacological, cosmetic-pharmacological or household ingredient.

The emulsions according to the invention are non- Newtonian stable emulsions. These emulsions have one high proportion of inner phase and differ fundamentally in this additionally from the emulsions with a low or medium proportion inner phase. They have a yield point or limit stress and show a decrease in the effective viscosity with increasing Shear rate. In contrast to gels that take effect of shear forces need a considerable amount of time to complete their ur to regain their original state, emulsions with a high return Share of inner phase almost instantaneously to the high state Viscosity back.

The invention enables the production of large amounts of emulsions with cheap main components, which makes cheap liquids to provide.  

The use of emulsions with a high proportion of internal phase in the field of cosmetics, nutrition, phar pharmaceutical and household offers many advantages. Fine-grained hard Substances or even coarse solids can enter the inner phase He emulsion can be dispersed with a high proportion of inner phase and remain stable suspended for a long period of time. It is in this way possible to apply recipes that normally either require thickeners to keep the solids suspended, or require vigorous stirring immediately before use to stabilize the solids, Process non-settling emulsions without incorporation large amounts of immiscible material. For example, a pigment-based cosmetic preparation based on water, the e.g. B. is used as body or leg make-up, to a what water-in-oil emulsion with a high proportion of internal phase by expressing about 2 percent by volume of a mild oily applied phase. This creates a cosmetic preparation that all the advantages of the original preparation without the disadvantage of Weaning.

Since emulsions with a high proportion of inner phase with regard to the Fat levels already correspond to a super cream, they don't tend to for phase separation during storage and therefore show an over excellent stability without the need for it Lich fine particle size.

Because of the inherent high viscosity of the high an emulsion recipes can be realized partly in the inner phase the desired viscosity properties without incorporation possess film-forming thickeners or gelling agents.  

Many of the pharmacologically active substances currently available must be in very small amounts can be used. If the active ingredient either is soluble in water or a compatible oil phase, this can by making dilute solutions. However, if one concentrated solution used as the outer phase can be a immiscible liquid can be used as a diluent. In many cases where medicinal products are applied to the skin must be absorbed more quickly if they are in in an oily medium. Recipes with a high content of internal he water-in-oil type phase can be used to to prepare diluted preparations in which the oil phase in It comes into contact with the skin, which ensures good penetration achieves without penetrating a previously applied layer of water must be gen, as is currently the case with oil-in-water emulsions low proportion of the inner phase is the case.

Medicinal or food preparations for oral use can be used as either oil-in-water or water be made in oil emulsion. Aqueous solutions of substances, which have an undesirable taste can act as an inner phase a water-in-oil emulsion with a high proportion of inner phase be incorporated, in which a mild cooking oil to cover the Ge taste is used. Similarly, oily preparations, which generally taste unpleasant as the inner phase of an oil be used in water emulsion, whereby a ver achieve a better taste and a more pleasant feeling in the mouth to let.

As already mentioned, the emulsions according to the invention show non-  Newtonian behavior. The emulsions contain an inner phase which is the bulk of the emulsions, d. H. at least about 80 percent, preferably over about 90 percent and often 95 percent or more, each based on volume the emulsion. These emulsions show at rest or elastic properties under the influence of low shear forces he solids or extremely viscous liquids. Puts but you moderate shear rates, such as this. B. at Pumping through lines is the case in practice, however not exceptionally high shear speeds, that's how they behave themselves like low-viscosity liquids.

The emulsions according to the invention include e.g. B.

• 1. water-in-oil emulsions,
• 2. the aforementioned emulsions in which water similar substances are used mixed with water, and
• 3. after a continuous process, as in DE-OS 16 44 942 described, prepared emulsions.

The water-like substances are non-aqueous, non-oily substances. Specific examples of this are ethylene glycol, Diethylene glycol, propylene glycol or dipropylene glycol.  

To prepare the emulsions according to the invention, all in DE-OS 16 44 942 described oily and non-oily substances, Emulsifiers and processes are applied.

The emulsions of the invention with a high proportion of internal phase (HIPR emulsions) can be used for numerous different cosmetic Preparations are used, the more important ones in the following Categories can be divided:

• (1) creams e.g. B. Coldcream, Day creams, absorption base creams, and creams for special Uses, such as sunscreen creams, depilatory or deodorants,
• (2) Lotions (like the creams, but the Lotions specially formulated for a variety of applications be),
• (3) makeup and face packs or masks,
• (4) shampoos, Hair waving and other hair care products,
• (5) shaving preparations,
• (6) dentifrice,
• (7) bath products,
• (8) Toilet egg fen, e.g. B. special cleaning agents for people with sensitive Skin,
• (9) hand wash, e.g. B. Industrial hand cleaners, hand washing soaps for use in soap dispensers in public toi Latvian or washrooms,
• (10) foods, e.g. B. puddings, pastes fillings, whipped cream substitute or low-calorie ice cream.

Categories (8) and (9) closely affect the medical field use or household cleaning agents. This is indicated in view of the function and effect of emulsions in such products not surprising. Many preparations in the first place could be considered as cosmetics actually have one  beneficial effect on the skin and could therefore also be called dermato logical means. Of course this is true also in the opposite case. Dermatological remedies for this contribute to the health of an unbalanced Restore skin and which are harmless enough without Prescription requirements are actually passed through sold the relevant trade as cosmetics.

The invention thus relates to preparations which can be written as follows:
Preparations from the group (1) cosmetic thixotropic emulsions with a high proportion of internal phase, characterized by the content of a cosmetic agent,
(2) pharmaceutical thixotropic emulsions with a high proportion of internal phase, characterized by the content of a medicament,
(3) cosmetic-pharmaceutical thixotropic emulsions with a high proportion of inner phase, characterized by the content of a mixture of a cosmetic agent and a medicament,
(4) thixotropic food emulsions with a high proportion of internal phase, characterized by the content of a food and
(5) Thixotropic household emulsions with a high proportion of inner phase, characterized by the content of a household agent, the thixotropic emulsions with a high proportion of inner phase at rest having the properties of a solid and, under the action of forces, the properties of a liquid , have a high volume ratio of inner phase to outer phase and one or more emulsifiers and an emulsifiable oil from the group (1) cosmetically compatible emulsifiable oils, (2) pharmacologically tolerable emulsifiable oils, (3) cosmetically pharmacologically tolerated emulsifiable oils , (4) nutritionally compatible emulsifiable oils and (5) household compatible emulsifiable oils and a non-oil from the group (1) cosmetically compatible non-oils, (2) pharmacologically compatible non-oils, (3) cosmetically-pharmacologically compatible non-oils, (4) nutritionally physiological compatible non-oils and (5) budget-compatible non-oils, the thixotropic emulsions with a high proportion of the inner phase being a water-in-oil emulsion, the inner phase of which is at least 80 percent, based on the volume of the emulsion.

Consumer preferences for skin care products depend on both of scientific factors as well as of aesthetic or sub factors that are often difficult to qualify. So are z. B. certain plasticizers to soften the Skin valued ingredients, but have an oily feel. For functional reasons, it is desirable to concentrate the Softener in skin care products increase, at the same time however, the product becomes oily due to the increased greasiness less accepted by consumers.

It has now been found that plasticizers, also used in a relatively high concentration, in emulsion form can be without the emulsions after application feel greasy or oily, and leaving the emulsions on the skin or other surfaces can be dried. This is made possible in to which the plasticizers in emulsions with a high proportion inner phase. The invention thus provides measures for Available, the plasticizer preparations for skin care  and skin protection without impairing the aesthetic feeling can be used as the lotion is applied and dried a sticky, dry, non-greasy feeling on the skin averages.

The beneficial effects and advantages of the invention can be found in a variety of preparations for skin care and skin protection realize. The prevention or relief of skin dryness using emollient lotion plays an important role. Dryness or cracking of the skin results when an un sufficient hydration from the lower layers of the skin or one excessive water loss due to particular stress on the skin in follow low humidity, or both. Strong or Continued use of soaps, etc. contributes to drying Skin condition due to removal of the protective lipid layer, which delays the evaporation of moisture.

Softening lotions are used to prevent dry skin or used for prevention. Plasticizers, however, pose oily or greasy substances, and their application to the skin leaves a greasy or oily feeling, which is all the more natural is more pronounced, the larger the proportion or the amount of the use is plasticizer. The invention allows the application of lotions containing softening agents, which have a ra rehydration of the skin, but nonetheless feel less dry and non-greasy. According to the invention hand lotions can also be produced in addition to the Plasticizers ent one or more medical additives ent hold. The production of other skin care products by part  have or complete replacement of the plasticizer by z. B. Sunscreen or pain reliever is possible. Far There are numerous different lotions with different compositions man known.

When conventional emulsions are applied to the skin to form a film applied, the film thus formed is easily removed with water washable. This fact prevents or diminishes the purpose of many Skin lotions, such as sunscreen lotions, hand lotions, face lotions or hair lotions, the film of which often comes into contact with water, so that it slips off easily when in contact with water or when perspiring is washed, whereby the actual duration of action of such pre is limited.

It has been found that emulsions with a high proportion of internal phase have other, very unusual properties. These emulsions namely have the ability to be relatively adhesive as well as relative to form water-resistant films on the skin and other surfaces the one that gives the films a relatively dry feel.

The using such emulsions by rubbing and drying If films are formed on the skin, they adhere more firmly to the skin and are more water resistant than films made from conventional emulsions. So z. B. an emulsion with a high proportion of inner phase, the contains only 10 percent oil, firmer on the skin than a conventional one emulsion with 50 percent oil. Are z. B. an inventive 90/10 W / O emulsion and a conventional 50/50 W / O emulsion dependent on the skin, and is then applied washed with water, it resists with the invention  Emulsion film formed on the skin of an aqueous blue color fabric solution, while made with the conventional emulsion te film with the aqueous solution while coloring the Washed off skin. This shows that the invention Emulsions a more firmly adhering, more water-resistant Form layer as conventional emulsions.

There are a large number of known formulations for the emulsions Plasticizers are available, one of which is oil-soluble agents are particularly valuable. Specific examples of this are wax esters, such as lanolin or walrus; Steroidal alcohols, such as Cho lesterin; or lanolin alcohols; Fatty alcohols, such as stearyl or Cetyl alcohol; Triglyceride esters, e.g. B. animal or vegetable Oils; Phospholipids such as lecithin or cephalin; Ester polyvalent ger alcohols, such as mono- and difatty acid esters of glycols, glycerin, Sorbitol or pentaerythritol; Fatty alcohol ether or ester; Coals hydrogens and waxes; ethoxylated lanolin or beeswax derivatives; or silicone oils.

In addition to the plasticizers, other active ingredients be included, e.g. B. bactericidal substances, local anesthetic Fabrics, sunscreens, artificial tanning agents or insect repellents pointing substances. The invention includes the uses of one or more of the substances or active ingredients mentioned in a single preparation, e.g. B. an insect repellent in combination with a sunscreen. In addition, in the preparations also dissolved an oil-soluble plasticizer and be included as an "inert" oil.  

The emulsions of the invention may optionally contain other additives and Contain auxiliaries. Moisturizers are particularly desirable, preferably polyhydric alcohols and especially glycerin, Propylene glycol and sorbitol. Other components that may be included are preservatives, fragrances, small amounts of alcohol len, as well as dyes or pigments, provided that white lotions or Emulsions are undesirable.

In summary, it can be stated that conventional, oellenthal permanent lotions when applied to the skin an undesirable Leave the oil film behind. It would therefore be desirable to use a lotion make such a thin and when applied to the skin adhering film shows that it feels dry. Except of the dry feeling, this film has not only desirable ones Film properties, but is also not removed with water washed. This is in contrast to conventional oil lotions, whose films not only feel oily, but also lighter Water to be washed off. Below are some examples of typical preparations specified that are produced according to the invention can be.

(1) Sunscreen lotions

Sunscreen lotions containing certain chemical Fabrics that filter out UV radiation from sunlight assets are widely used. These lotions, at which are generally emulsions, result in the Apply to the skin an oily layer that is light, e.g. B. at Sweating or swimming, being washed off.

In swimming pools, washing off the lotion does more than just that  Lotion removed from the skin, losing its effectiveness goes or is reduced, but it also forms a Oil foam or an oil skin on the water surface, which is not wishes and is annoying.

In contrast, the emuls produced with the invention appear sions formed films not only dry, but also lead in follow their firm adherence to the skin or their water resistance to a significant reduction or complete avoidance formation of oil stains in swimming pools.

(2) moisturizer

An inventive moisturizing water-in-oil emul sion looks like a cold cream. If this is on the skin is applied, the water present in the emulsion is removed not only surface dirt, but also leaves a thin, adherent, water-resistant oil film that adheres to the skin feels dry. Because of its adhesion, the surface film forms a protective layer that rubs in while sleeping follow the friction with the bedclothes prevented. It also protects the adhesive film contacts the skin with water, e.g. b. at the Clean, or as a protective cream that is put on before going out.

(3) Cream suspensions

A lotion produced according to the invention can be used together with Fest substances are formulated in suspension. So z. B. a talc containing cream when applied to the skin together hanging, dry film coating of talc in oil. This preparation not only gives the skin excellent moisture protection,  but also gives her a silky feeling. From cosmetic From a standpoint, this preparation gives a matt sheen that is often desired in cosmetics. If necessary, the talc be colored. So z. B. a moisture according to the invention cream to be applied to the skin to form a dry film Make makeup base, on which other cosmetics are then applied be brought. In addition, the dry film moisture be used to base the makeup on the foundation Apply skin; on this basis, a brown one colored talc emulsion can be applied. Through this procedure you don't get a certain color, but a natural complexion, since the talc particles due to the fact that they are in the film education are included, do not appear as overhead.

(4) Cleaning or make-up removal emulsion

According to the invention, a skin cream can be produced which is used in the Apply a moisturizing, dry film to the skin forms a cooling effect in the manner of a Reini when drying alcohol. This preparation has the ability to serve as cleaning alcohol without the drying effect that in the generally associated with the use of cleaning alcohols is. Apart from the fact that this emulsion is a softening cleanser represents a protective film, which in is very valuable in cases where patients spend a long time in the Must be in bed. As a result, bed sores are considerably reduced reduces or completely prevents. This cleansing lotion can be used in Hospitals or used for baby care. Furthermore has an alcohol lotion according to the invention which additionally contains talc contains a triple advantage by cooling at the same time,  forms a film and gives a silky feeling on the skin.

(5) Cleaning baby oil emulsion

A baby oil is emulsified in alcohol, so when rubbing the baby skin with the preparation of alcohol as a cleaning agent under Ent removal of pathogenic microorganisms acts. The oil remains and forms a normal baby oil layer on the skin. It is about a unique way of using baby oil that at the same time both cleanses the body since the alcohol cleanses the skin freed from microorganisms, as well as a protective film on the skin behind leaves, as the mother or child sister does in general. The preparation has not the appearance of an oil, but of a cream, ever changes but when used in an oil. The preparation works through one slight cooling effect has a beneficial effect on the baby and leaves the ver vaporize a protective layer that extends the cooling effect.

(6) wax cream

A wax-containing water-in-oil emulsion is produced, which looks like a cream, but when used forms a thin wax film on the skin. This film acts as super protective cream that protects the skin against the environment, e.g. B. the Protects hands like gloves.

In addition, these wax emulsions z. B. for furniture or Car care can be used. An example of this is a polish, the application of a thin, adherent, coherent, waterproof wax film with minimal effort.  

(7) paraffin cream (petrolatum cream)

According to the invention, paraffin or petrolatum water can be Make oil emulsions that can be used to make one apply a thin film of paraffin to the skin Touch is not noticeable. In contrast to conventional paraffin applied to the skin, which is oily and feels uncomfortable, provides a thin, dry, waterproof Film is one of the best ways of skin protection, first Line to keep the skin hydrated. This preparation can also be used for first aid and baby care Find. Contrary to the traditional use of paraffin, that feels greasy unless it is to the point of ineffectiveness is washed with water, forms the invention An effective, coherent, thin, dry, waterproof film on the skin.

(8) hair care emulsion

Because of the current fashion, water-soluble ones are currently becoming Fabrics instead of oily substances that are more valuable to the hair are used in hair care products. The water-in-oil emulsions The invention provides an advantageous method apply a thin film to the hair, this a na door look. These oil-containing emulsions ver give hair greater environmental protection than that current water-soluble films without the sticky lei appearance, such as when using oily hair care products in Must buy.  

(9) Ice skin cream

Novel emulsion creams that like when applied to the skin Ice cream looks are very cold and form a thin, too coherent, adhesive film that contains fragrances. It deals These are special cosmetic preparations that are used in refrigerated sold and used in its current state.

These preparations can also be used as the basis for food flavors are used that consist entirely of food. Examples of this are chocolate sundae, vanilla or vanilla Replacement ice cream or fruit flavored ice cream.

Further examples of areas of application of the invention Emulsions are:

• (10) toothpastes,
• (11) acne cream,
• (12) Tresaderm cream,
• (13) hydrogen peroxide cream,
• (14) hydrocortisone cream,
• (15) antiperspirant cream,
• (16) abrasive cleaning agents,
• (17) lipsticks,
• (18) denture adhesive,
• (19) "PAM" type anti-adhesive food additives and
• (20) many other food, pharmaceutical or cosmetic Auxiliaries, auxiliaries for health care or household medium.

All of the above-mentioned preparations meet the abs  intended purpose and leave the protective film of the invention.

All emulsions can be used to prepare the emulsions according to the invention gators are used that are able to emulsions with a high proportion of inner phase. Generally is the emulsifier content in the emulsions 0.05 to 10 percent, preferably as 0.05 to 8 percent, especially 2 to 8 percent, particularly preferably 3 to 7 percent and very particularly preferably 4 to 6 per cent. Non-ionic emulsifiers are preferred; but other emulsifiers that are non-toxic, or, e.g. B. in terms of their smell or color, non- are irritating and free of complaints. Examples of such emulsions ren are cationic, anionic or amphoteric emulsifiers. Specific examples of suitable emulsifiers are polyoxyethylene fatty alcohol ethers and esters, ethoxylated sorbitan fatty acid esters as well as polyol fatty acid esters. Specific examples of emulsifiers, used in the food and cosmetic sectors are sorbitan sesquioleate, sorbitan monooleate, mono- and diglycerides, glycerol monooleate, sorbitan trioleate, nonylphen oxypolyoxyethylene ethanol and diglycerol monooleate.

The terms "relatively adherent" or "relatively adherent", "right relatively water-resistant "or" relatively waterproof "and" relatively dry grip "describe those with the Emul invention sions with a high proportion of inner phase Regarding the films made from conventional emulsions. in the however, in general, even in the case of emulsions with high an films made partly from such emulsions in the inner phase, which contain less than 80 percent internal phase, relatively less  adhesive, relatively less water-resistant and relatively less dry to the touch than those made from a high percentage emulsion on the inner phase of over 80 percent of films produced. If the inner phase rises to 85 percent or above, they have films formed on the surface have a dryer grip.

The term "budgetary means" the various in the house stop and used in janitories, such as cleaning medium, polishing agents, bactericidal agents, abrasives, soaps, Detergent or bleach.

The examples illustrate the invention.

The oxyalkylations were carried out according to the procedure described in US Pat. No. 2,695,886, Example 1a described general procedures performed.

The emulsifiers A and B used are same as the emulsifiers 66 and 67 of DE-OS 16 44 942.

Emulsifier C

This emulsifier is made by oxyalkylating 1 part of octylphenol with 0.69 parts by weight of ethylene oxide.

In addition, non-oxylalkylated emulsifiers can also be used be det.  

The following example describes the production of a thixo tropical emulsion with a high proportion of internal aqueous phase and outer oil phase.

example 1

A Viking pump with a diameter of 5.1 cm, its drive by an electric motor with 850 rpm. is done with a 2.44 meter long flexible hose at the outlet opening and with a similar flexible hose at the inlet opening continuous The ends of the two tubes are in a 189 liter steel barrel, open at the top. With this arrangement can return material from the barrel to the pump and barrel be pumped.

3.79 liters of mineral oil and 0.473 liters of emulsifier C are combined mixed and presented in the steel barrel. While doing this mixture pumped around, water is slowly added to the suction end of the pump. In 189 liters of water are added about 15 minutes; you get one thick, white, jelly-like emulsion.

Example 2

There are small laboratory batches of emulsions under Ver using a kitchen mixer (model C3, manufacturer Hobart Manufac turing company). This mixer has a 1.89 liter containing mixing bowl and a wire bat with planetary cone drives. A typical cosmetic water-in-oil base cream with high proportion of inner phase is produced as follows:

6 milliliters of light mineral oil, 2 milliliters of lanolin, 1 milli  liter of the emulga described in Example 1 of DE-OS 16 44 942 tors and 1 milliliter of the emulsifier from Example 21 of DE-OS 16 44 942 are placed in the mixing bowl of the kitchen mixer. While the mixer is set to speed level 3, 5 milli liter portions of distilled water with thorough mixing added between each addition until a total of 50 milliliters of water is added. Then additional Water slowly up to a total volume of 190 ml of water admitted. You get a thick, creamy, white, stable Emulsion, the 95 volumes of distilled water in 5 volumes parts of the oily outer phase contains emulsified. An emul sion of this type is suitable as a basis (base cream) for a Variety of recipes. So z. B. a suitable amount of UV absorbers, such as dipropylene glycol salicylate, for the production of a Sunscreen cream to be incorporated. You can also be an insect repellants, such as dimethylformamide or diethyltoluamide, add. Smelling oils and dyes or pigments can be used to achieve this special properties are incorporated. If a special Active ingredient should be incorporated into the oily phase, it can be necessary to opti the emulsifier combination to achieve Modify painter properties. Guidelines for choosing the Emulsifiers are described in DE-OS 16 44 942. Given if suitable pigments can be in the aq dispersed phase to make the preparations opaque and to match it to the skin tone. Water soluble ingredients can be solved in the inner phase.

An example of a special recipe is described below ben:  

Example 3

It will be a sunscreen according to the procedure of the previous manufactured example. The outer phase consists e.g. B. from a light mineral oil containing about 0.1 to 3 percent on the weight of the light mineral oil, a UV absorbing one By means of dipropylene glycol sylicylate, and about 1 to 10 percent, be referred to the weight of the light mineral oil that in Example 1 the oil-soluble emulsifier described in DE-OS 16 44 942 are. The inner phase is either water or water, that a small amount of a plasticizer, e.g. B. glycerin, contains. The water phase is also buffered so that one obtain an isotonic solution with respect to human skin. The actual emulsion is made after any of the previous ones processes described in the examples. For example the outer phase is placed in a Hobart mixer; this will slowly the inner phase is added, the mixer on a Zwi stage is switched. You can also use it to make the emulsion make up the outer phase as in the previous example pumped while pumping the inner one Phase feeds slowly into the suction end of the pump. Preferably in the technical manufacture, the inner and outer Phase simultaneously in the mixing chamber of a continuous emul feeding device.

Example 4

Using the exact same procedure as in Example 3 becomes an insect repellent by replacing about 1 to 10 percent, based on the weight of the light mineral oil, by an oil-soluble insect repellent, diethyltoluamide, instead of the UV absorber  be fabricated.

The preparation of typical food emulsions is as follows described.

Examples 5 and 6

The outer phase is cooking oil, e.g. B. corn oil or salad oil. The emulsions are produced with regard to the process, its amounts and the emulsifier as in Example 1. The edible oil is mixed with the food grade one Emulsifier C. added. Water is used as the inner phase. Man receives a water-in-oil emulsion with a high proportion of internal phase. The emulsion formed has the general properties of Mayonnaise or salad dressing with the advantage of being calorie tight stop is very low, which makes the emulsion especially for diet is suitable for purposes where there is a limit on calorie intake wishes. Another special advantage is that water-soluble aroma substances are incorporated into the inner phase can. Insoluble food flavorings, such as mustard or Turmeric, the aqueous phase can form an emulsion be incorporated, which is homogeneous and shows no settling.

Example 5

Outer phase liter

Corn oil 3.79 Emulsifier C 0.473

Inner phase

Water189  

Example 6

Outer phase liter

Salad oil 3.79 Emulsifier C 0.473

Inner phase

Water189

Example 7

The basic cream from example 2 becomes an antiperspirant Cream made by using a 15 percent as the inner phase aqueous solution of aluminum chlorohydrate (water-containing aluminum chloride) is used.

Example 8

The basic cream from example 2 becomes an antiperspirant Cream made by using a 20 percent as the inner phase aqueous solution of aluminum sulfate at 10 percent, based on the weight of the inner phase, titanium dioxide, suspended therein are used.

Example 9

A leg makeup or "liquid stocking" is obtained as follows represents:

The following are presented in a Hobart mixer:

light mineral oil 3.79 liters

Emulsifier
Emulsifier from Example 1
DE-OS 16 44 9420.118 liter emulsifier from Example 21
DE-OS 16 44 9420.118 liters

For this purpose, a mixture is slowly added while stirring by grinding

Water 30.2 liters white powder base 4.54 kg concentrated ocher 3.89 g Geranium milk (scarlet red) 7.78 g

Example 10

An anhydrous hand cleanser is made by one in the mixing chamber of the continuous described in DE-OS 16 44 942 Emulsifying device per 1 part of external phase 4 to 6 each Parts internal phase feeds.

Outer phase volume divisions

Odorless kerosene 6 diglycol oleate 2 emulsifier from example 1
DE-OS 16 44 942 1 emulsifier from Example 21
DE-OS 16 44 942 1

Inner phase

Water 75 Glycerin 5 Perfumes10

In the following examples, the water-in-oil emulsions are like produced as follows: The emulsifier and the oil-soluble components are dissolved in an oil phase tank, the water-soluble stock  parts are dissolved in the water phase tank. Both phases are on closing in a continuously operating emulsifying device according to the method described in DE-OS 16 44 942 in ent speaking ratio to form the desired emulsion feeds. If necessary, the oil phase, the water phase, or after the emulsion is finished, insoluble substances be incorporated. The emulsion produced in this way is peeled and packaged.

The batch process of water-in-oil emulsification can also be carried out so that the water phase to the emul gator-containing oil phase with stirring at low shear forces sets until the desired emulsion has formed.

The following examples show propyl paraben and methyl paraben used as an antioxidant. This is the Propyl ester or methyl ester of p-hydroxybenzoic acid.

POE (2) oleyl ether is the adduct of oleic acid with 2 moles of ethylene oxide. This adduct is used as an emulsifier.  

Example 11

This cream forms a water-insoluble film on the skin.

Ingredients Percent

Light mineral oil, # 40 5.00 POE (2) oleyl ether 5.00 70 percent sorbitol solution 5.00 Propyl paraben 0.10 Methyl paraben 0.10 Perfumes 0.05 Water84.75

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben placed in the oil phase tank and mixed (for acceleration the solution is heated).
• 2) After cooling, the fragrances go to the oil phase tank added.
• 3) Water, sorbitol and methyl paraben are in the water phase tank placed and mixed (it is used to accelerate the solution heats).
• 4) Emulsify to form a W / O emulsion (W / O = water-in Oil).

Example 12 Cosmetic cream

This cream forms a water-insoluble film on the skin.

Ingredients Percent

Light mineral oil, # 40 2.50 POE (2) oleyl ether 2.50 70 percent sorbitol solution 2.50 Propyl paraben 0.05 Methyl paraben 0.10 Perfumes 0.05 Water 92.30

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben placed in the oil phase tank and mixed (to accelerate the Dissolution is heated).
• 2) After cooling, the fragrances are put into the oil phase tank give.
• 3) Water, sorbitol and methyl paraben are in the water phase tank placed and mixed (it is used to accelerate the dissolution heats).
• 4) Emulsify to form a W / O emulsion.

Example 13 Cosmetic cream

This cream forms a water-insoluble film on the skin.

Ingredients Percent

Light mineral oil, # 40 1.25 POE (2) oleyl ether 1.25 70 percent sorbitol solution 1.25 Propylparaben 0.03 Methyl paraben 0.10  Perfumes 0.05 Water 96.07

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben are used in Oil phase tank submitted and mixed (to accelerate the opening solution is heated).
• 2) After cooling, the fragrances are put into the oil phase tank give.
• 3) Water, sorbitol and methyl paraben are in the water phase tank placed and mixed (it is used to accelerate the dissolution heats).
• 4) Emulsify to form a W / O emulsion.

Example 14 Sun protection cream

The sun filter is incorporated into a water-resistant film that is not washed off when swimming or sweating.

Ingredients Percent

Light mineral oil, # 40 5.00 POE (2) oleyl ether 5.00 amyl p-dimethylaminobenzoate
(Sun filter) 2.00 silicone oil
(Dimethylsiloxane 100 cS) 1.00 propylparaben 0.10 methylparaben 0.10 fragrances 0.05 water86.75

production method

• 1) POE (2) oleyl ether, mineral oil, silicone oil, amyl-p-dimethylamino benzoate and propyl paraben are placed in the oil phase tank and mixed to form a solution (the Disintegration accelerates and you have to stir enough to make it Keep silicone oil homogeneously suspended).
• 2) When the oil phase tank cools down, the fragrances are added give.
• 3) Water and methyl paraben are placed in the water phase tank and mixed (the dissolution is accelerated by heating).
• 4) Emulsify to form a W / O emulsion.

Example 15 Hydrocortisone cream

The cream keeps the hydrocortisone in a non-greasy, water-proof permanent film while it is being absorbed by the skin.

Ingredients Percent

POE (2) oleyl ether 5.0 Propylene glycol 5.0 W.F. Petrolatum 2.5 light mineral oil, # 40 2.5 Hydrocortisone 17 valerate 0.5 Propylparaben 0.1 Methyl paraben 0.1 Perfumes 0.1 Water84.2  

production method

• 1) POE (2) oleyl ether, mineral oil, petrolatum and propyl paraben are placed in the oil phase tank and form a solution mixed (heating accelerates the dissolution).
• 2) As the oil phase cools, the fragrances are added.
• 3) Water, propylene glycol and methyl paraben are in the water phase tank and mixed to form a solution (Er heating accelerates the dissolution).
• 4) Emulsify to form a W / O emulsion.
• 5) The emulsion is mixed with the hydrocortisone and mixed, until it has become homogeneous with the additional mixer.

Example 16 Cosmetic cream with silicone

A water-insoluble film remains for protection during use and to moisturize the skin.

Ingredients Percent

Light mineral oil, # 40 5.00 Dimethylsiloxane oil, 100 cS 3.00 POE (2) oleyl ether 5.00 70 percent sorbitol solution 5.00 Propyl paraben 0.10 Methyl paraben 0.10 Perfumes 0.05 Water 81.75  

production method

• 1) Mineral oil, silicone oil, POE (2) oleyl ether and propyl paraben are mixed in the oil phase tank. To accelerate the up solution is heated.
• 2) After the oil phase tank has cooled, the fragrances are added give.
• 3) Sorbitol, methyl paraben and water are mixed in the water phase tank mixes. Heating is carried out to accelerate the dissolution.
• 4) Emulsify to form a W / O emulsion.

Example 17 Hair cream

This cream forms a continuous film on the hair and the scalp, which is neither greasy nor thick.

Ingredients Percent

Light mineral oil, # 40 5.00 POE (2) oleyl ether 5.00 70 percent sorbitol solution 5.00 Propyl paraben 0.10 Methyl paraben 0.10 Perfumes 0.05 Water84.75

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben mixed in the oil phase tank (to accelerate the dissolution is heated).  
• 2) After the oil phase tank has cooled, the fragrances become too set.
• 3) Water, sorbitol and methyl paraben are mixed in the water phase tank mixes (heated to accelerate the dissolution).
• 4) Emulsify to form a W / O emulsion.

Example 18 Hair cream

This cream forms a coherent film on the hair and the Scalp that is neither greasy nor thick.

Ingredients Percent

Light mineral oil, # 40 2.50 POE (2) oleyl ether 2.50 70 percent sorbitol solution 2.50 Propyl paraben 0.05 Methyl paraben 0.10 Perfumes 0.05 Water 92.30

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben mixed in the oil phase tank (to accelerate the dissolution heated).
• 2) After the oil phase tank has cooled, the fragrances are added give.
• 3) Water, sorbitol and methyl paraben are mixed in the water phase tank mixes (heated to accelerate the dissolution).
• 4) Emulsify to form a W / O emulsion.

Example 19 Hair cream

This cream forms a coherent film on the hair and the scalp, which is neither greasy nor thick.

Ingredients Percent

Light mineral oil, # 40 1.25 POE (2) oleyl ether 1.25 70 percent sorbitol solution 1.25 Propylparaben 0.03 Methyl paraben 0.10 Perfumes 0.05 Water 96.07

production method

• 1) POE (2) oleyl ether, light mineral oil and propyl paraben mixed in the oil phase tank (to accelerate the dissolution heated).
• 2) After the oil phase tank has cooled, the fragrances are added give.
• 3) Water, sorbitol and methyl paraben are mixed in the water phase tank mixes (heated to accelerate the dissolution).
• 4) Emulsify to form a W / O emulsion.

Example 20 Talc cream

When using this cream, you get a water-insoluble one Film with talcum contained therein, which is protective and moisturizing works and conveys a silky "talc feeling".

Ingredients Percent

Light mineral oil, # 40 2.50 white "Fonoline" petrolatum 2.50 POE (2) oleyl ether 5.00 Propyl paraben 0.10 Perfumes 0.05 Talcum powder 20.00 Water 64.75 Propylene glycol 5.00 Methyl paraben 0.10

production method

• 1) Mineral oil, petrolatum, POE (2) oleyl ether and propyl paraben are mixed in the oil phase tank. To accelerate the up solution is heated.
• 2) After the oil phase has cooled, the fragrances are added.
• 3) Propylene glycol, water and methyl paraben are in the water phase tank mixed. To accelerate the dissolution of the parabens is heated.
• 4) Emulsify to form a W / O emulsion.
• 5) The talcum powder is added to the additional mixer and mixed with the emulsion until homogeneous.

Example 21 Petrolatum cream

This cream forms a permanent, waterproof protection on the Hands and skin that is not greasy and the skin of dishes rinsing and other skin-intensive activities.

Ingredients Percent

White "Fonoline" Petrolatum 2.50 POE (2) oleyl ether 5.00 light mineral oil, # 40 2.50 Glycerin 10.00 Propyl paraben 0.10 Methyl paraben 0.10 Perfumes 0.05 Water 79.75

production method

• 1) Petrolatum, POE (2) oleyl ether, mineral oil and propyl paraben are mixed in the oil phase tank. To accelerate the up solution of the parabens is heated.
• 2) After cooling, the fragrances become those in the oil phases components in the tank.
• 3) Glycerin, water and methyl paraben are in the water phase tank mixed. To accelerate the dissolution of the parabens heated.
• 4) Emulsify to form a W / O emulsion.

Example 22 Tresaderm cream

This veterinary drug can e.g. B. in ear infections as thick coating that does not run and does not run off is washed.

Ingredients Percent

Light mineral oil 5.0 POE (2) oleyl ether 5.0 Tresaderm45.0 Water 45.0

production method

• 1) Mineral oil and POE (2) oleyl ether are mixed in the oil phase tank mixes.
• 2) Tresaderm and water are mixed in the water phase tank.
• 3) Emulsify to form a W / O emulsion.

Example 23 Cosmetic wax cream

This cream forms a permanent, water-resistant protective layer on the skin that is not greasy. This cream contains no lead ralöl, but isopropyl myristate, wax and glycerin as soft agent; it protects and moisturizes the skin.

Ingredients Percent

POE (2) oleyl ether 5.0 Isopropyl myristate 3.0 "Witco" wax X-145 2.0 Glycerin 5.0 Water84.7 Perfumes 0.1 Propylparaben 0.1 Methyl paraben 0.1  

production method

• 1) POE (2) oleyl ether, isopropyl myristate, wax and propyl paraben are under heating in the oil phase tank to form a homo mixed solution.
• 2) Glycerin, water and methyl paraben are heated in the Water phase tank mixed to form a homogeneous solution.
• 3) Emulsify to form a W / O emulsion.
• 4) After cooling the emulsion and adding the fragrances is mixed in the additional mixer.

Example 24 Wax polish

With this polish you get a hard wax film from a cremi thick emulsion consisting of 80 percent water. This butt litur cleans and polishes with light rubbing or polishing.

Ingredients Percent

Odorless kerosene 14.0 "Ceramer 67" wax
(Manufacturer Petrolite Corp.) 5.0 POE (2) oleyl ether 1.0 water 80.0

production method

• 1) Kerosene, wax and POE (2) oleyl ether are in the oil phase tank mixed with heating until homogeneous.
• 2) The water is heated so that both phases have the same temperature possess.
• 3) Emulsify to form a W / O emulsion.

Example 25 Silicone polish

A permanent silicone protective film is obtained from a special one Silicone oil. This full-feeling cream is made up of 90 percent of water. There is no bottom to achieve a shiny shimmer gating required.

Ingredients Percent

ICI silicone oil M466 8.0 POE (2) oleyl ether 2.0 Water 90.0

production method

• 1) Silicone oil and POE (2) oleyl ether are mixed in the oil phase tank mixes.
• 2) Water is placed in the water phase tank.
• 3) Emulsify to form a W / O emulsion.

Example 26 Acne cream

The best ingredients for acne are benzoyl peroxide and collo ideal sulfur; so far, however, it has not been possible to do this Combine fabrics in a stable product. With the follow this is made possible in the recipe.

Ingredients Percent

Light mineral oil, # 40 5.00 POE (2) oleyl ether 5.00 Benzoyl peroxide 5.00 colloidal sulfur 5.00 water 78.80 carboxymethyl cellulose
("Hercules 7HF") 1.00 methyl paraben 0.10 propyl paraben 0.10

production method

• 1) Mineral oil, POE (2) oleyl ether and propyl paraben are in the oil phase tank mixed. To speed up the resolution of the Para bens is heated.
• 2) water, carboxymethyl cellulose, methyl paraben and benzoyl peroxide are mixed together in the water phase tank. You grind and ter use a ball mill until the desired particle size is reached. After adding the sulfur, as before, in the ball mill ground.
• 3) Emulsify to form a W / O emulsion.

Example 27 Antiperspirant cream

This cream contains the best known antiperspirant deodorant used, namely an aluminum hydroxychloride complex. she owns the advantage that they are in the form of a non-irritating, softening ends, waterproof film is present. This means that the film by low sweating is not washed off, as is the case with other products on the market.

Ingredients Percent

Light mineral oil, # 4015.00 POE (2) oleyl ether 5.00 aluminum hydroxychloride
complex, 50 percent solution
("Chlorohydrol") 40.00 water 39.725 methyl paraben 0.10 propyl paraben 0.10 fragrance 0.075

production method

• 1) Oil, POE (2) oleyl ether and propyl paraben are in the oil phase tank mixed together. To accelerate the resolution of the Pa rabens is heated.
• 2) After cooling, the fragrances are put into the oil phase tank give and mixed.
• 3) Chlorohydrol, water and methyl paraben are in the water phase tank mixed together. To accelerate the resolution of the Pa rabens is heated.
• 4) Both phases are emulsified to form a W / O emulsion.

Example 28 Alcohol cream

The alcohol gives a cooling effect that is very refreshing and has a soothing effect without the skin drying out because it is is a softening cream. When using this cream a waterproof protective film remains on the skin.

Ingredients Percent

Light mineral oil 5.0 POE (2) oleyl ether 5.0 Ethanol10.0 Propylparaben 0.1 Methyl paraben 0.1 Water 79.8  

production method

• 1) Mineral oil, POE (2) oleyl ether and propyl paraben are in the oil phase tank mixed together. To accelerate the up solution of the parabens is heated.
• 2) Ethanol, methylparaben and water are in the water phase tank mixed together. To accelerate the resolution of the Pa rabens is heated.
• 3) Emulsify to form a W / O emulsion.

Example 29 toothpaste

It is a new concept in the field of Toothpastes. This toothpaste grinds, cleans and polishes the Teeth, leaving the waterproof film. This gives the Teeth have a special shine and protection from one Polished cover.

Ingredients Percent

Light mineral oil (for
pharmaceutical purposes) 2.5 mono- and diglycerides
(suitable for food) 2.5 70% sorbitol solution 2.5 dicalcium phosphate dihydrate 20.0 peppermint oil 0.2 chloroform 0.1 propyl paraben 0.1 methyl paraben 0.1 water 72.0

production method

• 1) Mineral oil, glycerides and propyl paraben are in the oil phase tank mixed together. To accelerate the resolution of the Pa rabens is heated.
• 2) After cooling the oil phase, peppermint oil and chloro form mixed.
• 3) Sorbitol, methyl paraben and water are also in the water phase tank mixed together. To speed up the resolution of the Para bens is heated.
• 4) Emulsify to form a W / O emulsion.
• 5) After adding the dicalcium phosphate to the emulsion, is mixed with the additional mixer until homogeneous.

Example 30 Hydrogen peroxide cream

The safest bleach known is one of softening medium rich cream incorporated into the skin during the action of the bleach protects. Since it is a cream, it works it does not come off, but stops.

Ingredients Percent

Light mineral oil 5.0 POE (2) oleyl ether 5.0 hydrogen peroxide,
30 percent solution 10.0 water 80.0

production method

• 1) Mineral oil and POE (2) oleyl ether are in the oil phase tank  other mixed.
• 2) Peroxide and water are mixed together in the water phase tank mixes.
• 3) Emulsify to form a W / O emulsion.

If you look at the skin made in the aforementioned examples rub lotion into the skin and let it dry, as well as this formed film washes with water, it turns out that these films versus an aqueous solution of a water-soluble blue Dye are resistant. In contrast, in the treatment nes film formed from a conventional 50/50 W / O emulsion the treatment with the aqueous dye solution makes the skin blue colors.

Claims (9)

1. Stable, thixotropic emulsion which has the properties of a solid at rest and, under the action of forces, the properties of a liquid, containing at least 80% by volume of the inner disperse phase, and an emulsifier, characterized in that

• - that it is free from thickening or gelling agents,
• - That it is a water-in-oil emulsion which contains water or mixtures of water with ethylene glycol, diethylene glycol, propylene glycol or dipropylene glycol as the inner phase and
• - That the emulsion contains at least one ingredient as a food or cosmetic, pharmacological, cosmetic-pharmacological or household ingredient.

2. Emulsions according to claim 1, characterized in that the inner Phase is water. 3. Emulsions according to one of claims 1 or 2, characterized in that they are in the form of a cream that contains UV absorbers. 4. Emulsions according to one of claims 1 or 2, characterized in that that they are in the form of a cream that is an insect repellent contains. 5. Emulsions according to one of claims 1 or 2, characterized in that their outer phase consists of an edible oil. 6. Emulsions according to one of claims 1 to 3, characterized in that that they are in the form of a cream that acts as an antiperspirant Contains aluminum chlorohydrate.   7. Emulsions according to one of claims 1 and 2, characterized in that they contain a solid in suspension. 8. Emulsions according to claim 7, characterized in that the feast is talc. 9. Use of the emulsions according to claim 1 for the production of over trains.