BE1020165A5 - STABLE EMULSIONS OF POLYISOBUTENE, PREPARATION AND USE. - Google Patents

Abstract

The invention relates to emulsions based on polyisobutene, as well as the preparation and use thereof. These emulsions are stable and thinly liquid. In this invention, emulsions based on low, medium and high molecular weight polyisobutene are reported.

Description

STABLE EMULSIONS OF POLYISOBUTES, PREPARATION AND USE OF TECHNICAL DOMAIN

The invention relates to stable emulsions based on polyisobutene, as well as their preparation and use. In this invention, emulsions based on low, medium and high molecular weight polyisobutene are reported.

BACKGROUND ART

Emulsions or dispersions can be defined as a mixture of two or more immiscible fluids. The preparation of a dispersion or of an emulsion involves the mixing of two immiscible fluids, one of these fluids (called "dispersed phase") being dispersed in the form of minuscule droplets in the other fluid (called "dispersing phase"). Emulsions are obtained during an emulsification process in which a homogeneous mixture is obtained with the aid of a surfactant or a surfactant.

A lot of emulsions are already known today. However, making emulsions based on polyolefins and polyisobutene in particular has a number of difficulties. First, it is very difficult to obtain a stable emulsion. Also, only stable low molecular weight polyisobutene emulsions have been reported. In addition, the presence of a wax or oil is required. Furthermore, the presence of a polymer is also required in the synthesis of such emulsions, which considerably increases the cost price of such emulsions. Finally, a high mass concentration of one or more surfactants is also required.

WO 2011 141496 reports the synthesis of stable emulsions based on polyisobutene. Use is made of polyisobutene with a molecular weight of a maximum of 10000 g / mol. A functionalized polymer is also added here.

WO 2007 042454 tells about the synthesis of polyisobutene-based emulsions. Here, only syntheses are reported in the presence of

a polymer in which polyisobutene-based emulsions with a molecular weight of less than 10000 g / mol are shown.

However, it is not yet possible to make stable emulsions based on polyisobutene in the absence of a polymer. Moreover, it is also not possible to make emulsions of polyisobutene on the basis of high molecular weight polyisobutene. Furthermore, only emulsions based on polyisobutene are reported, which are synthesized with a high surfactant concentration. Also, no emulsions based on polyisobutene in the absence of a wax and / or oil have been reported.

SUMMARY OF THE INVENTION

The present invention contemplates the synthesis of stable emulsions based on polyisobutene. Use can herein be made of low, medium or high molecular weight polyisobutene or mixtures thereof. There is no need for the presence of a polymer in the synthesis, which considerably reduces the cost price. In addition, polyisobutene-based emulsions are reported in the present invention which require a low surfactant concentration.

In a preferred invention, the emulsion will consist of the following basic components: polyolefin, surfactant and water, which offer the advantage of being produced with fewer components and also reducing the cost of these emulsions. These can optionally be further supplemented with wax, oil and / or additives. Furthermore, this invention contemplates the method for the production of such emulsions. This invention also contemplates the use of such emulsions in chemical-technical applications, such as gluing systems, cosmetics, plant protection, preparation and treatment of paper, production and processing of textile and leather, coatings, pharmaceutical applications, construction, wood treatment, water and gas barrier for for example methane, carbon dioxide, radon, protected coating for radioactive radiation.

DESCRIPTION OF THE FIGURES

Figure 1 shows the particle size distribution associated with emulsion of Example 1. Figure 2 shows the particle size distribution associated with emulsion of Example 2.

Figure 3 shows the particle size distribution associated with emulsion of Example 3. Figure 4 shows the particle size distribution associated with emulsion of Example 4.

DETAILED DESCRIPTION

Unless defined otherwise, all terms used in the description of the invention, including technical and scientific terms, have the meaning as generally understood by those skilled in the art of the invention. For a better assessment of the description of the invention, the following terms are explicitly explained.

"A", "de" and "het" in this document refer to both the singular and the plural unless the context clearly assumes otherwise. For example, "a segment" means one or more than one segment.

When "about" or "round" is used in this document for a measurable quantity, a parameter, a duration or moment, and the like, variations are meant of +/- 20% or less, preferably +/- 10% or less, more preferably +/- 5% or less, even more preferably +/- 1% or less, and even more preferably +/- 0.1% or less than and of the quoted value, insofar as such variations of are applicable in the described invention. However, it must be understood here that the value of the quantity at which the term "about" or "round" is used is itself specifically disclosed.

The terms "include", "comprising", "consist of", "consisting of", "provided with", "contain", "containing", "include", "including", "contents", "contents" are synonyms and are inclusive or open terms indicating the presence of what follows, and which do not preclude or preclude the presence of other components, features, elements, members, steps, known from or described in the prior art.

The citation of numerical intervals by the end points includes all integers, fractions and / or real numbers between the end points, including these end points.

In general it can be assumed that an emulsion consists of the following basic components: one or more polyolefins, one or more surfactants and water. These components can optionally be supplemented with one or more waxes, oils and / or additives. In the present invention, polyisobutene is preferably used as polyolefin.

Polyolefins are chemical components consisting of carbon and hydrogen. These polyolefins can be linear, such as, for example, polyethylene. They may also have side chains, such as, for example, polypropylene, which have methyl groups as side chains. Polyolefins can also be copolymers or terpolymers, such as, for example, ethylene / propylene copolymer. A polyolefin is preferably understood to be a homopolymer consisting of only one type of polymer.

Polyisobutene is a polymer based on isobutene as a basic component. Polyisobutene occurs with different molecular weights. Low molecular weight means a molecular weight of up to 2500 g / mol, medium molecular weight means of 2501 g / mol to 100000 g / mol and high molecular weight means of 100001 g / mol to 300000 g / mol.

Polyisobutene with different molecular weights is already known. Examples of polyisobutene produced by BASF are: low molecular weight: Glissopal®V types, such as Glissopal®V190, Glissopal®V 500, Glissopal®V 640, Glissopal®V 1500; with a medium molecular weight: Oppanol®B types, such as Oppanol®B 10, Oppanol®B 11, Oppanol®B 12,

Oppanol®B 13, Oppanol®B 14, Oppanol®B 15; high molecular weight: Oppanol®B types, such as Oppanol®B 30, Oppanol®B 50, Oppanol®B 80.

Examples produced by ExxonMobil Chemical Company are Vistanec LM-MH, LM-MS and LM-H.

In the synthesis of emulsions and dispersions, a surfactant or surfactant is often referred to as an emulsifier. A surfactant normally comprises a hydrophobic and hydrophilic moiety. The hydrophobic moiety here comprises a chain length of 4 to 20 carbon atoms, preferably 6 to 19 carbon atoms and even more preferably 8 to 18 carbon atoms.

A wide range of surfactants can be used as emulsifiers. Preferably, the emulsifier used will be selected from the group of the anionic, cationic or non-ionic surfactants.

Anionic surfactants include saponified fatty acids and fatty acid derivatives with carboxyl groups such as sodium dodecyl sulfate (SDS), sodium dodecyl benzene sulfonate, sulfates and sulfonates, and abietic acid.

Examples of anionic surfacates are also: carboxylates, sulfonates, sulfo fatty acids, methyl esters, sulfates, phosphates.

A carboxylate is a compound which comprises at least one carboxylate group in the molecule. Examples of carboxylates are:

Soaps, such as stearates, oleates, cocoates of alkali metals or of ammonium, alkanolamines

Ether carboxylates, such as Akypo® RO20, Akypo® RO 50, Akypo® RO 90

A sulfonate is a compound which comprises at least one sulfonate group in the molecule. Examples of sulphonates are:

Aikylbenzene sulfonates, such as Lutensit® A-LBS, Lutensit® A-LBN, Lutensit® A-LBA, Marlon® AS3, Maranil® DBX

Aikylnaphthalene sulfonates condensed with formaldehyde, lignin sulfonates, such as, for example, Borresperse NA, Tamol NH7519 Alkyl sulfonates, such as Alscoap OS-14P, BIO-TERGE® AS-40, BIO-TERGE® AS-40 CG, BIO-TERGE® AS-90 Beads, Calimulse ® AOS-20, Calimulse® AOS-40, Calsoft® AOS-40, Colonial® AOS-40, Elfan® OS 46, Ifrapon® AOS 38, Ifrapon® AOS 38 P, Jeenate® AOS-40, Nikkol® OS-14 , Norfox® ALPHA XL, POLYSTEP® A-18, Rhodacal® A-246L, Rhodacal® LSS-40 / A

- Sulphonated oil, such as Turkish red oil. - Olefin sulphonates

Aromatic sulphonates, such as Nekal®BX, Dowfax®2Al

A sulfate is a compound which comprises at least one SO4 group in the molecule. Examples of sulfates are:

- Fatty acid alcohol sulfates, such as coco fatty acid alcohol sulfate (CAS 97375-27-4), for example EMAL®10G, Dispersogen®SI, Elfan® 280, Mackol® 100N

Other alcohol sulphates such as Emal® 71, Lanette® E Coco fatty acid alcohol ether sulphates such as EMAL® 20C, Latemul® E150, Sulfochem® ES-7, Texapon® ASV-70 Spec., Agnique SLES-229-F, Octosol 828, POLYSTEP ® B-23, Unipol® 125-E, 130-E, Unipol® ES-40 - Other alcohol ether sulfates, such as Avanel® S-150, Avanel® S 150 CG, Avanel® S150 CG N, Witcolate® D51-51, Witcolate® D51-53.

A phosphate is a compound which comprises at least one PO4 group in the molecule. Examples of phosphates are:

- Alkyl ether phosphates, such as Maphos® 37P, Maphos® 54P, Maphos® 37T, Maphos® 210T, Maphos® 210P

- Phosphates such as Lutensit A-EP

- Alkyl phosphates

The anionic surfactants are preferably added as a salt. Salts are, for example, alkali metal salts, such as sodium, potassium, lithium, ammonium, hydroxy ethyl ammonium, di (hydroxyethyl) ammonium and tri (hydroxyethyl) ammonium salts or alkanolamine salts.

Cationic surfactants include dialkyl benzene alkyl ammonium chloride, alkylbenzyl methyl ammonium chloride, alkyl benzyl dimethyl ammonium bromide, benzalkonium chloride, cetyl pyridinium bromide, C12, C15 / or C17 trimethyl ammonium bromides, halide salts of quaternised polyoxyethylalkylamines, dodecyl benzyl triethyl ammonium chloride and benzalkonium chloride.

Examples of cationic surfactants are also: quaternary ammonium compounds. A quaternary ammonium compound is a compound which comprises at least one R 4 N + group in its molecule. Examples of counter ions that can be used in the quaternary ammonium compounds are: - Halogens, methosulfates, sulfates and carbonates of coco fat or cetyl / oleyl trimethyl ammonium.

The following cationic surfactants are preferably used: N, N-dimethyl-N- (hydroxy-C7-C25-alkyl) ammonium salts - Mono- and di (C7-C25-alkyl) dimethylammonium compounds - Esterquats, mainly mono-, di- and trialkanolamines , quaternary esterified by C8-C22 carboxylic acids.

- Imidazolin quats, mainly 1-alkyl imidazolinium salts.

A beta-in-surfactant is a compound which, under use conditions, comprises at least one positive charge and at least one negative charge. An alkyl betain is a betain surfactant, which comprises at least one alkyl unit per molecule. Examples of betain surfactants are: - Cocamidopropyl betain, such as MAFO® CAB, Amonyl® 280BE, Amphosol® CA, Amphosol® CG, Amphosol® CR, Amphosol® HCG, Amphosol® HCG-50, Chembetaine® C, Chembetaine® CGF, Chembetaine ® CL, Dehyton® PK, Dehyton® PK 45, Emery® 6744, Empigen® BS / F, Empigen® BS / FA, Empigen® BS / P, Genagen® CAB, Lonzaine® C, Lonzaine® CO, Mirataine® BET- C-30, Mirataine® CB, Monateric® CAB, Naxaine® C, Naxaine® CO, Norfox® CAPB, Norfox® Coco Betaine, Ralufon® 414, TEGO®-Betain CKD, TEGO® Betain E KE 1, TEGO®-Betain F, TEGO®-Betain F 50, and aminoxides such as alkyl dimethyiamine oxide.

Non-ionic surfactants include polyvinyl alcohol, polyacrylic acid, methalose, methyl cellulose, ethyl cellulose, propyl cellulose, hydroxy ethyl cellulose, carboxymethyl cellulose, natural gums, polyoxyethylene cetyl ether, polyoxyethylene lauryl ether, polyoxyethylene octyl ether, polyoxyethylene octylphenyl ether, polyoxyethylene oleyl ether, polyoxyethylene sorbitan monolaurate, polyoxyethylene stearyl ether, polyoxyethylene nonylphenyl ether and dialkylphenoxy poly (ethyleneoxy) ethanol.

Nonionic surfactants have a neutral, polar and hydrophilic head, which makes non-ionic surfactants water-soluble. Such surfactants adsorb to surfaces and aggregate to micelles above a critical micelle concentration. According to the nature of the head, various surfactants can be distinguished, such as (oligo) oxyalkylene groups, and in particular (oligo) oxyethylene groups, (polyethylene) glycol groups and carbohydrate groups such as alkyl polyglucosides and fatty acid N-methyl glucamides.

Alcohol phenol alkoxylates are compounds which can be produced by adding alkylene oxide, preferably ethylene oxide to alkyl phenols. Non-limiting examples are: Norfox® OP-102, Surfonic® OP-120, T-Det® 0-12.

Fatty acids ethoxylates are fatty acid esters, which have been treated with different amounts of ethylene oxide.

Triglycerides are esters of glycerols (glycerides), in which all three hydroxyl groups are esterified with fatty acids. These can be modified with alkylene oxides. Fatty acid alcohol amides include at least one amide group with an alkyl group and one or two alkoxyl groups. Alkyl polyglycosides are mixtures of alkyl monoglucosides (alkyl-α-D- and β-D-glucopyranoside with a small amount of -glucofuranoside), alkyldiglucosides (isomaltosides, maltosides and others) and alkyl oligoglucosides (maltotriosides, others) tetraosides. Alkyl polyglycosides can be synthesized non-limitingly by an acid-catalyzed reaction (Fisher reaction) of glucose (or starch) or n-butyl glycosides with fatty acid alcohols. Furthermore, alkyl polyglycosides can also be used as a non-ionic surfactant. A non-limiting example is Lutensol® GD70.

In addition, non-ionic N-alkylated, preferably N-methylated, fatty acid amides can also be used as surfactant.

Alcohol alkoxylates include a hydrophobic moiety with a chain length of 4 to 20 C atoms, preferably 6 to 19 C atoms and more preferably 8 to 18 C atoms, wherein the alcohol can occur linear or branched, and a hydrophilic moiety which alkoxylate may contain units such as ethylene oxide, propylene oxide and / or butylene oxide, with 2 to 30 recurring units. Non-limiting examples are: Lutensol® XP, Lutensol® XL, Lutensol® ON,

Lutensol® AT, Lutensol® A, Lutensol® AO, Lutensol® TO.

Oils and / or waxes can also be added to the emulsion as an optional component. Useful oils include both natural and mineral oils.

Natural oils include soybean bean oil, olive oil, sesame oil, cottonseed oil, castor oil, coconut oil, sweet almond oil, rapeseed oil and palm oil; mineral oils such as paraffinic and / or naphthenic oils and vaseline.

Useful waxes include both natural and synthetic waxes. Suitable waxes include animal waxes such as beeswax, Chinese wax, shellac wax, spermaceet and wool wax; vegetable waxes such as bayberry wax, palm wax, candelilla wax, carnauba wax, castor wax, asparto wax, Japan wax, Jojoba oil wax, ouricury wax, rice bran wax and soy wax; mineral waxes such as ceresin waxes, montan waxes, ozokerite waxes and peat waxes; petroleum waxes such as paraffin and microcrystalline waxes, and synthetic waxes such as polyolefin waxes, including polyethylene and polypropylene waxes, polytetrafluoroethylene waxes (PTFE waxes), Fischer-Tropsch waxes, stearamide waxes (including ethylene-bis stearamide waxes polymerized [alpha] olefin wax, substituted amide waxes (e.g., esterified or saponified substituted amide waxes) and other chemically modified waxes such as PTFE-modified polyethylene wax, as well as combinations of the above. Preferably, these waxes include paraffin wax, microcrystalline wax, Fischer-Tropsch waxes, branched and linear polyethylene waxes, polypropylene waxes, carnauba wax, ethylene bis stearamide (EBS) waxes, and combinations thereof.

Furthermore, if desired and / or necessary, additives can also be added to the production process of the emulsion. Additives can have a positive influence on the production process of the emulsion, as well as possibly giving certain desired characteristics to the emulsions. An example of possibly used additives are bases to optimize the saponification process, as well as bactericides, colorants, viscosity modifiers for increasing or decreasing the viscosity, anti-foaming agents, defoaming agents. It should be clear to a person skilled in the art that these are merely examples of possibly used additives, and that other options are also possible.

The proportion of the polyolefin is preferably between 0.5 and 65%, more preferably between 10 and 65%, even more preferably between 25 and 65%, most preferably between 30 and 65% of the total emulsion mass. The proportion of surfactants in the total emulsion is preferably between 0.2 and 5%, more preferably between 0.2 and 3% of the total emulsion mass. The proportion of water is preferably between 0.5 and 75%, more preferably between 10 and 75%, even more preferably between 20 and 60% and most preferably between 35 and 55% of the total emulsion mass. The proportion of waxes is preferably between 0 and 50%, more preferably between 0 and 30%, more preferably between 0 and 20% and most preferably between 0 and 10% of the total emulsion mass. The proportion of the oils is preferably between 0 and 50%, more preferably between 0 and 30%, more preferably between 0 and 20% and most preferably between 0 and 10% of the total emulsion mass. The proportion of additives is preferably between 0 and 10%, more preferably between 0 and 5%, even more preferably between 0 and 2% and most preferably between 0 and 1% of the total emulsion mass. The mass ratio of the polyolefin to the wax is between 1: 0 and 0: 1, preferably between 1: 0 and 0.2: 0.8, more preferably between 1: 0 and 0.3: 0.7, even more preferably between 1: 0 and 0.4: 0.6, most preferably between 1: 0 and 0.5: 0.5.

Generally it can be assumed that the emulsification process for the synthesis of an emulsion consists of the following steps: a pre-mix step of the individual components to a pre-emulsion and the effective emulsification. The state of the art has several possibilities for achieving a certain fineness of the droplets. Potentially useful systems include the use of movable rotary agitators, rotor-stator devices, pressure devices, homogenizers, and other blasting devices, ultrasonic devices, and membrane emulsification devices.

The most commonly used are the pressure devices with homogenizers. The principle of this is to pressurize the pre-emulsion or the pre-dispersion, followed by a vigorous pressure relief, thus transferring the mechanical energy to the pre-dispersion. A widely used system of such prior art includes a reaction vessel and a high pressure homogenizer, such as a Gaulin 15MR from the APV Homogenizer Group. The reaction vessel is preferentially equipped with a heating and cooling system. The necessary components are brought together in the reaction vessel, after which the mixture is mixed and warmed up to a certain temperature. A high temperature will normally lead to smaller particle size of the dispersing phase in the final emulsion. The melting points and flame points of the various components must be taken into account.

Once the desired temperature has been reached, the mixture is controlled by a homogenizer. Use of a high-pressure homogenizer provides a reduction in the particle size of the components of the dispersing phase, whereby the pressure used can cover a range of a few hundred to even a thousand bar. This process is well known in the art and is quoted inter alia in US 3579461 and US 2009 0197105. Once the emulsification process has ended, the reaction mixture must be cooled, preferably to room temperature.

Generally, the particles obtained during the emulsification will have a size of 0.1 to 100 µm, preferably 0.10 to 10 µm, more preferably of 0.1 to 5 µm, depending on the homogenization conditions and the size of the molecular weight of the polyisobutenes. In general it can be said that the smaller the particle root, the more stable the emulsion.

The emulsification can be done by means of vigorous mixing of the mixture under increased pressure. In a preferred embodiment of the present invention, the emulsion is obtained by using an elevated pressure, preferably a pressure of 100 to 1000 bar, more preferably a pressure between 100 and 300 bar. Optionally, the mixture can be initially subjected to a high pressure, after which in a subsequent step the mixture is exposed to a lower pressure, being approximately 10% of the initial pressure. For example, a first step can be done under a pressure of 200 bar, after which it is lowered to 20 bar in a subsequent step. Such a method prevents cavitation of the product.

Once the emulsion has been formed, the homogenization process will be stopped and the emulsion must be cooled. Preferably, the emulsion is cooled to the desired end temperature, ranging from 20 ° C to 40 ° C, preferably from 20 to 25 ° C. It is extremely important that this cooling process runs as efficiently as possible as the speed at which the emulsion is cooled has an impact on the quality of the emulsion obtained. The faster the cooling to desired temperature can be achieved, the higher the quality of the emulsion obtained. Furthermore, it is economically interesting to have the production process of the emulsions run as efficiently and quickly as possible.

The composition and method as described above leads to stable emulsions with very fine particles. The viscosity can vary from thin liquid emulsions (see also examples 1-3 and 5-9) to highly viscous emulsions (see example 4). These emulsions are suitable for applications such as glue systems, cosmetics, plant protection, preparation and treatment of paper, production and processing of textile and leather, coatings, pharmaceutical applications, construction, wood treatment, water and gas barrier for eg methane, carbon dioxide, radon, protected coating for radioactive radiation.

EXAMPLES

In the following, the invention is described a.d.h.v. non-limiting examples illustrating the invention, and which are not intended or may be interpreted to limit the scope of the invention.

Below some examples. The values in the table represent the mass ratios.

(*) The stability test is performed by acceleration in a centrifuge, resulting in an accelerated aging treatment in the emulsion. With a H20 separation <35%, a stability of at least 6 months is guaranteed.

(**) The particle size distribution is determined with the aid of a laser diffractometer Beekman Coulter LS 13320 MW.

•% wt = weight percent

It is believed that the present invention is not limited to the embodiments described above and that some modifications or changes can be added to the described examples without re-evaluating the appended claims.

Claims (15)

An emulsion comprising as components: a. A polyolefin, with a mass percentage of 0.5% to 65% b. a surfactant, with a mass percentage of 0.2% to 5% c. water, with a mass percentage of 0.5% to 75% d. a wax, with a mass percentage of 0% to 50% e. an oil, with a mass percentage of 0% to 50% f. an additive with a mass percentage of 0% to 10% based on the total mass of the emulsion, characterized in that the average particle size of said emulsion is between 0.1 µm and 200 µm. An emulsion comprising as components: a. A polyolefin, with a mass percentage of 30% to 65% b. a surfactant, with a mass percentage of 0.2% to 3% c. water, with a mass percentage of 0.5% to 60% d. a wax, with a mass percentage of 0% to 20% e. an oil, with a mass percentage of 0% to 20% f. an additive with a mass percentage of 0% to 2% based on the total mass of the emulsion, characterized in that the average particle size of said emulsion is between 0.1 µm and 100 µm. 3. An emulsion consisting of the components: a. A polyolefin, with a mass percentage of 0.5% to 65% b. a surfactant, with a mass percentage of 0.2% to 5% c. water, with a mass percentage of 0.5% to 75% d. a wax, with a mass percentage of 0% to 50% e. an oil, with a mass percentage of 0% to 50% f. an additive with a mass percentage of 0% to 10% based on the total mass of the emulsion, characterized in that the average particle size of said emulsion is between 0.1 µm and 40 µm. 4. An emulsion consisting of the components: a. A polyolefin, with a mass percentage of 0.5% to 65%

b. a surfactant, with a mass percentage of 0.2% to 5% c. water, with a mass percentage of 0.5% to 75% d. a wax, with a mass percentage of 0% to 50% e. an oil, with a mass percentage of 0% to 50% f. an additive with a mass percentage of 0% to 10% based on the total mass of the emulsion, characterized in that the average particle size of said emulsion is between 0.1 µm and 4 µm. Emulsion according to claims 1 to 4, characterized in that the polyolefin is polyisobutene. Emulsion according to claim 5, characterized in that the polyisobutene comprises a molecular weight in the low, medium or high molecular weight class or mixtures thereof. Emulsion according to claims 1 to 6, characterized in that the wax preferably comprises a paraffin wax. Emulsion according to claims 1 to 7, characterized in that the oil preferably comprises a natural or mineral oil. Emulsion according to claims 1 to 8, characterized in that the weight ratio of polyolefin: wax or polyolefin: oil in the emulsion is between 1: 0 and 0: 1, preferably between 1: 0 and 0.2: 0.8, more preferably between 1: 0 and 0.3: 0.7, even more preferably between 1: 0 and 0.4: 0.6, most preferably between 1: 0 and 0.5: 0.5. Emulsion according to claims 1 to 9, characterized in that the emulsifier is a surfactant, preferably selected from the group of anionic emulsifiers consisting of fatty acids, saponified fatty acids and all derivatives of fatty acids with carboxyl groups or a mixture thereof. Emulsion according to claims 1 to 10, characterized in that the additive has antibacterial or microbiological properties. Emulsion according to claims 1 to 11, characterized in that the emulsion has a viscosity measured with a Brookfield viscosity meter at 20 ° C, preferably between 30 mPa.s and 2000 mPa.s, more preferably between 30 mPa.s and 1000 mPa.s and most preferably between 30 mPa.s and 300 mPa.s. Emulsion according to claims 1 to 12, characterized in that the emulsion is stably measured according to the phase stability tests, preferably for at least six months, more preferably for at least one year and even more preferably for at least two years. Method for the preparation of an emulsion defined in claims 1 to 13, characterized in that the components are homogenized with a mechanical mixer in a homogenizer pressure device. Use of an emulsion according to claims 1 to 14 in a chemical application, such as glue systems, cosmetics, plant protection, preparation and treatment of paper, production and processing of textile and leather, coatings, pharmaceutical applications, construction, wood treatment, waters, gas barrier for, for example methane, carbon dioxide, radon, protected coating for radioactive radiation.