WO2016139131A1

WO2016139131A1 - Method for the production of powdered alkali organosiliconate hydrophobing agents for construction materials

Info

Publication number: WO2016139131A1
Application number: PCT/EP2016/054019
Authority: WO
Inventors: Michael Stepp; Daniel Schildbach
Original assignee: Wacker Chemie Ag
Priority date: 2015-03-02
Filing date: 2016-02-25
Publication date: 2016-09-09
Also published as: DE102015203685A1

Abstract

The invention relates to a method for producing powdered solids (F) comprising alkali organosiliconates and fatty acids. In a first step of said method, alkali organosiliconates are reacted with fatty acids or fatty acid esters or mixtures thereof in water so as to obtain liquid mixtures, and in a second step, the liquid mixtures are dried to obtain the powdered solids (F).

Description

Process for the preparation of powdered organosiliconorganosilicate

Baustoffhydrophobiermittel

The invention relates to a process for the preparation

powdered solids from alkali organosiliconates and

Fatty acids for the hydrophobization of mineral building materials.

Alkaliorganosiliconates have been used for decades

Hydrophobing, i. water-repellent equipment,

used in particular by mineral building materials. As a rule, these are inorganic building materials, which may be silicate and non-silicate. Due to their good solubility in water, alkali organosiliconates can be applied as an aqueous solution to solids where, after evaporation of the water under the influence of carbon dioxide, they form firmly adhering, permanently water-repellent surfaces. Since they contain virtually no hydrolytically removable organic radicals, the curing takes place advantageously without release of undesirable volatile organic by-products (so-called VOC). Above all, the aqueous solution of methyl silicate is of great importance. These are, in particular, the potassium (potassium methylsiliconate) or the sodium derivative

(Sodium methylsiliconate). Aqueous solutions of organosiliconates are particularly well suited for the hydrophobic treatment of weakly acidic to slightly alkaline building materials, in particular of fired clay, natural stone or gypsum products. The application of the

Hydrophobic agent either by impregnation or

Mass hydrophobing done. In the impregnation, for example, products of calcined clay or natural stone are immersed in an aqueous dilution of the organosiliconate for a certain time or sprayed with such a dilution, the active substance dissolved in water being capillary in the pore structure of the Building material penetrates. Depending on the prevailing conditions, after a period of a few minutes to several hours to a few days after drying of the building material, a hydrophobic zone develops that surrounds the building material and drastically reduces its capillary water absorption. In the

Mass hydrophobization becomes the aqueous solution of the

Organosiliconate optionally after further dilution with the

aqueous slurry (for example, "porridge"), for example, a gypsum-based building material is mixed.After the setting and drying of the building material is a greatly reduced

Water absorption of the gypsum building material compared with the

measured unhydrophobic building material. The advantage of

Mass hydrophobization e.g. of gypsum is that the building material is not only surrounded by a hydrophobic zone, but water repellent through and through. This is particularly important in the case of water-soluble building materials such as gypsum or when the building material is cut into pieces after the water-repellent treatment. This method finds e.g. in the

Production of plasterboard, gypsum wallboard or gypsum fibreboard application.

Plaster-based plasters, fillers, screed or plaster

Self-leveling compounds as well as adhesives, all of which belong to the gypsum-dry mortar family, are delivered to the construction site as powder in bags or silos and only then mixed with the mixing water. For use in gypsum plaster,

Gypsum-based gypsum fillers, gypsum-based tile adhesives, gypsum-based tile adhesives, gypsum-based soil-based leveling compounds and screed compounds and similar mineral building materials therefore become a solid and powdery plaster

Hydrophobing agent needed, the ready-to-use

Dry mixture can be added and only with the addition of Water during application on site, for example, on the construction site, unfolds its hydrophobic effect in a short time. This is called dry-mix application.

Standard EN 520 specifies a water absorption, measured for two hours, of less than 5% for the water absorption class Hl of hydrophobic plasterboard approved for use in wet rooms. Accordingly, the standard for water-repellent

Gypsum fillers EN 13963: 2014, that fillers marked as "hydrophobized" must fall below a certain water absorption - in the case of the class Hl this is less than 5%

gypsum-based dry mortar, which is in the range of possible

Moisture penetration must also have a water absorption of less than 5%. the

One skilled in the art is also aware that for ligated

Dry mortar also the water absorption, measured during 24 hours, is of great importance.

DE1957263 describes a method for building gypsum walls in underground operation. A pumpable and thus per se liquid gypsum slurry containing, among other additives

Potassium siliconate and a stearate will be backfilled and

Caulking cavities used in pits. However, the potassium siliconate does not necessarily come in solid form

Use and the stearate takes over the task of a

Condenser. It is not clear from the description that all additives are necessarily added in powder form to the gypsum powder filled in a sack. In addition, neither

Evidence of the hydrophobing property supplied nor the combination of both products in powder form described as advantageous for the hydrophobization of a stored in powder gypsum. Also in DD291074 is a Kaliumpropylsiliconat with a

Sodium linoleate combined in a Sanierputz, but here the siliconate is added in liquid form. Furthermore, the redevelopment plaster described is based on the binder cement, and not on gypsum.

A comparable process is described in DE3105407: a water-repellent gypsum mortar is obtained by adding a mixture of fatty amine, low-molecular-weight acid and alkali metal siliconate as hydrophobing agent during the mixing of the gypsum. However, it is also not a Drymix additive in powder form.

WO2012 / 022544 describes the preparation of pulverulent alkali metal alkyl siliconates having different molar ratios

Potassium to silicon and their advantages in the additive of gypsum-bound dry mortars, such as lime gypsum plaster. In the corresponding application example 3 with a lime-gypsum machine plaster, 0.3% by weight of a potassium methylsiliconate powder having a molar ratio of potassium can be added

Silicon of 0.64 the water absorption after 2 hours (in

Based on EN 520) decrease by more than 90% compared to the untreated reference. The lime-plaster - machine plaster used here is a so-called low-filled plaster with a proportion of settable gypsum phases of about 60%. Such gypsum plaster contains a low content of fillers (or also called aggregates) due to its relatively high proportion of settable gypsum phases.

Such fillers may, for example, artificial or

natural aggregates and minerals of different particle size distributions, such as alkaline earth carbonates (eg calcite, dolomite), alkaline earth sulfates (eg calcium sulfate in the form of gypsum or anhydrite), chippings, natural sands or Silica sand. Even if you measure the water absorption after 24 hours underwater storage, occurs at a dosage of 0.3 wt .-% of the same potassium methylsiliconate a

Reduction of water absorption compared to the untreated reference of over 80%.

A problem arises when using the potassium methylsiliconate powder on special so-called. High-filled lime plaster gypsum plaster, in which the proportion of

settable gypsum phases is only about 20% and the content of fillers is correspondingly higher and is around 80%. Although 0.3% by weight of a potassium methylsiliconate powder with a molar ratio of potassium can also be added here

Silicon of 0.64 the water absorption after 2 hours (in

Based on EN 520) in comparison to the untreated reference by more than 90% decrease, the water absorption at 24-hour measurement, however, only drops to values of about 50% compared to the untreated reference.

An increase in the dosage of potassium methylsiliconate powder is not a solution to the problem, since this class of substance at excessive dosage (which goes well beyond the hydrophobic minimum, which in turn is to be determined individually for each gypsum-based dry mortar formulation) undesirable side effects on those with water

has mixed gypsum mortar. These side effects include the formation of so-called sintered layers as well as the loss of

Air pore content and flowability, resulting in a

Deterioration up to the complete loss of

Processability of gypsum mortar results. A measure of the processing properties of the mixed with water

Fresh mortar is the slump, which can be determined according to EN 1015-3 with a hammermannel. When using

Potassium Methylsiliconatpulvern in different dosages in a freshly mixed with water lime-gypsum machine plaster falls on the fact that the slump significantly decreases from a dosage of 0.3 wt .-%. For that reason, one should

Overdose only to reduce water absorption after 24 hours underwater storage can be avoided.

The problem described for highly filled lime gypsum plasters is achieved when the gypsum plaster in addition to the potassium methylsiliconate powder alkali or alkaline earth metal salts of fatty acids are added as further additives. The combination of these two hydrophobing additives can reduce both the 2-hour over 90% and the 24-hour water absorption by over 80% compared to the untreated reference. First, it is unexpected that the proportion of each additive used in the total dosage of the combination of both additives alone is not effective in the desired form. Second, it is unexpected that the two individual additives, used alone in the same dosage as the total dosage of the combination of both additives, are also not effective in the desired form. The latter case is a synergy, since the combination of the two additives is more effective than either of the two individual additives, based on the same amount used.

Likewise, in the combination of the two additives potassium methylsiliconate powder and fatty acid salt, the slump in accordance with EN 1015-3 is not influenced as much as, for example, when potassium methylsiliconate powder is used in a correspondingly higher dosage.

Mixtures of Alkaliorganosiliconatpulvern and fatty acid salts or free fatty acids have a major disadvantage as Baustoffadditiv: Density and grain differences of the individual components in mixing, storage and transport of ready-to-use building material dry mixture for the separation of the individual components and thus undesirable inhomogeneities in the distribution of the water repellent and thus to a

Impact reduction lead to loss of effect, especially since the added amounts are usually <1 percent by weight.

The invention relates to a process for the preparation of pulverulent solids (F), which include Alkaliorganosiliconate and fatty acids, in which

in a first step, alkali organosiliconates with fatty acids or fatty acid esters or mixtures thereof in water

liquid mixtures are reacted and

in a second step, the liquid mixtures to the powdery solids (F) are dried.

The powdered solids (F) are homogeneous and free-flowing. It can come to no separation of the individual components more. This process also has the advantage that the basicity of the siliconate is reduced by the addition of fatty acid, resulting in thermal stability, handling and application

Health and safety reasons. The Alkaliorganosiliconate used in the first step can carry as a cation only one kind of alkali metals or their mixtures with each other. Particularly preferred are the sodium and potassium organosiliconates or mixtures thereof. The alkali metal organosiliconates are preferably salts of

Organosilanols, their hydrolysis / condensation products, or of organosilanols together with their

Hydrolysis / condensation products with alkali cations in which the molar ratio of cation to silicon is> 0.1. Preferably, a ratio between 0.5 and 3.0, more preferably a ratio between 0.6 and 2.0, exceptionally preferred is a ratio between 0.9 and 1.5.

The preparation of organosiliconates has already been described many times. For example, in DE 4336600 a

continuous process for the preparation of aqueous

Alkali organosiliconate solutions claimed, in WO 13075969 alcoholic-aqueous solutions or dispersions of siliconates are described as intermediates. However, it is also possible to use solid organosiliconates as in WO 12022544

claimed.

The organo-group is preferably a monovalent one

unsubstituted or substituted by halogen atoms, amino, alkoxy or silyl hydrocarbon radical having 1 to 18 carbon atoms. Particularly preferred are unsubstituted alkyl radicals, cycloalkyl radicals, alkylaryl radicals, arylalkyl radicals and phenyl radicals. Preferably, the hydrocarbon radicals have 1 to 6 carbon atoms. Particularly preferred are the 3,3,3-trifluoropropyl, the vinyl and the phenyl radical. Very particular preference is given to unsubstituted alkyl radicals, such as the methyl, ethyl, propyl, butyl, pentyl, hexyl, heptyl, octyl and hexadecyl radicals. Particular preference is given to alkyl radicals preferably having 1 to 18 carbon atoms, preferably 1 to 6 carbon atoms, and thereof in turn the methyl radical.

Further examples of the organo radical are:

n-propyl, 2-propyl, 3-chloropropyl, 2- (trimethylsilyl) ethyl, 2- (trimethoxysilyl) ethyl, 2 - (triethoxysilyl) ethyl, 2- (dirnethoxymethylsilyl) ethyl, 2- (diethoxymethylsilyl) ethyl, n-butyl, 2-butyl, 2-methylpropyl, t-butyl, n-pentyl,

Cyclopentyl, n-hexyl, cyclohexyl, n-heptyl, n-octyl, 2- Ethylhexyl, n-nonyl, n-decyl, n-undecyl, 10-undecenyl, n-dodecyl, isotridecyl, n-tetradecyl, n-hexadecyl, vinyl, allyl, benzyl, p-Chlorophenyl, o- (phenyl) phenyl, m- (phenyl) phenyl, p- (phenyl) phenyl, 1-naphthyl, 2-naphthyl, 2-phenylethyl, 1-phenylethyl, 3 -Phenylpropyl, 3- (2-

Aminoethyl) aminopropyl, 3-aminopropyl, N-morpholinomethyl, N-pyrrolidinomethyl, 3- (N-cyclohexyl) aminopropyl, 1-N-imidazolidinopropyl.

Further examples of the organo radical are radicals - (CH ₂ O) _n -R ^x , - (CH ₂ CH ₂ O) _m -R ² , and - (CH ₂ CH ₂ NH) ₀ H, where n, m and o are values from 1 to 10, in particular 1, 2, 3 and R ¹ , R ^{2 are} alkyl radicals having 1 to 6 carbon atoms, in particular the above

mentioned examples mean. As fatty acids, lower (up to seven carbon atoms), middle (eight to twelve carbon atoms) and higher (more than twelve carbon atoms) fatty acids may be used, with lower fatty acids being more preferred, higher fatty acids being more preferred and medium fatty acids being most preferred. Examples of particularly preferred and extremely preferred fatty acids: caprylic acid (octanoic acid), 2-ethylhexanoic acid, pelargonic acid (nonanoic acid), capric acid

(Decanoic acid), undecanoic acid, undecacetic acid, lauric acid (dodecanoic acid), myristic acid (tetradecanoic acid),

Pentadecanoic acid, palmitic acid (hexadecanoic acid), stearic acid (octadecanoic acid), palmitoleic acid ((Z) -9-hexadecenoic acid), oleic acid ((Z) -9-octadecenoic acid). It is also possible to use mixtures of fatty acids. Instead of the fatty acids or in addition, corresponding fatty acid esters can also be used. In particular, with a molar ratio of fatty acid to the alkali metal organosiliconate bound alkali metal of <0.3, instead of the free fatty acids and fatty acid esters, such as Fatty acid alkyl or glycerol mono-, di- and triesters optionally be used in admixture with fatty acids. Mixtures of different fatty acids or fatty acid esters or fatty acids with fatty acid esters can also be used.

In the process according to the invention, the molar ratio of fatty acid to the alkali metal bound in the alkali metal organosiliconate is preferably from 0.05 to 1.0, particularly preferably from 0.1 to 0.5, in particular from 0.2 to 0.35.

The reaction of the alkali metal organosiliconates with fatty acids or fatty acid esters in the first step preferably takes place by simple mixing of the components, more preferably because of the good homogenization in the presence of water. It is also possible to use suspensions or solutions of the components. Preferably, based on 100 parts by weight of Alkaliorganosiliconaten and fatty acids or fatty acid esters 10 to 200 parts by weight, particularly preferably 20 to 150

Parts by weight, in particular 40 to 100 parts by weight of water used.

In the case of inhomogeneous mixtures, addition of

Solubilizer and / or emulsifier in the first step, the implementation can be accelerated. Preferred solubilizers are polar solvents, particularly preferably alcohols, in particular alkanols and alkanediols having one to 4 carbon atoms, for example methanol, ethanol, 2-propanol, 1-propanol, 1-butanol, 2-butanol, isobutanol, ethylene glycol, propylene glycol, wherein methanol and ethanol are particularly preferred because of their low boiling points, and ketones, such as acetone or methyl ethyl ketone. Preferably, aqueous solutions of

Alkaliorganosiliconaten, which are often commercially available, reacted with pure fatty acids. The concentration of the alkali organosilicon solutions used is preferably from 10 to 70% by weight, more preferably at least 40% by weight, in particular at least 50% by weight. In particular, medium and higher fatty acids often form two-phase mixtures on mixing with purely aqueous alkali metal organosilicon solutions because of their low polarity, which do not produce any effects on drying

homogeneous powder. In these cases, it is preferable to add a solubilizer in an amount that is straight

sufficient to ensure a clear solution since

Drying again must be completely removed. The proportions of solubilizer depend primarily on the type of fatty acid, the type of Alkaliorganosiliconats and the

Concentration of the participating reaction partners and can be determined by the skilled person in simple mixing preliminary experiments. They are preferably in the range of not more than 40% by weight, more preferably not more than 30% by weight, in particular not more than 20% by weight, of the reaction mixture. It is also possible to add mixtures of solubilizers.

Also by increasing the temperature can be a homogenization

be achieved. Preferably, the reaction takes place at

lowest possible temperature due to the thermal

Instability of Alkaliorganosiliconate. The

Reaction temperature in the first step is therefore

preferably at most 100 ° C, more preferably at most 70 ° C, in particular at most 60 ° C. The reaction is preferably carried out at the pressure of the surrounding atmosphere. But it can also be at elevated or lower pressure

respectively . The heat of neutralization released during the reaction can be dissipated by cooling, but it may also be necessary to first heat the mixture to start the desired reaction. The end of the reaction can be easily detected at a constant cooling capacity at the drop in temperature. To ensure a controlled reaction is

preferably in the batch process, one component is introduced and the other metered, but it can also be used, for example. at

continuous reaction in the tubular reactor both

Components are dosed in parallel. When using liquid fatty acid or fatty acid derivatives which are liquid at room temperature, it is particularly preferable to use a batchwise solution of the

Alkaliorganosiliconats presented and added the fatty acid or the fatty acid derivative. At room temperature solid fatty acids or their derivatives are preferably either melted before dissolution or dissolved in a solubilizer. Since the dosage of solids is generally more expensive and the production of melts or solutions is advantageously carried out in a stirred container, solid fatty acids or their derivatives are in the batch process at room temperature

preferably submitted and the siliconate solution is added.

The preferably homogeneous reaction mixture

Alkaliorganosiliconat and fatty acid or fatty acid derivative is finally in the second step to a homogeneous

free-flowing powder dried. The drying takes place

preferably by the usual technical methods by evaporation of the volatile constituents at elevated temperature and / or reduced pressure relative to the atmosphere.

Preferably, the drying is carried out continuously, more preferably in a spray dryer or a

Fluidized bed dryer, especially in a spray dryer. Other preferred continuous dryers are

Pastry dryers, disc dryers as well

Thin-film contact dryer. Among the discontinuous dryers are tray dryers, vacuum contact dryers,

Mixer dryer, condenser dryer, fluidized bed dryer and

Freeze dryer preferred, with mixer dryer, conical dryer and fluidized bed dryer are particularly preferred.

The drying temperature in the second step is preferably 60 ° C to 200 ° C, more preferably 70 ° C to 150 ° C.

The liquid mixtures may contain, in the first or second step, further constituents, e.g. to improve the

Application properties are added. To improve and maintain the flowability, flow aids and / or anti-caking agents can be added. Also components from the finished building material mixture such as gypsum, cement, sand, glass, or fillers such as chalk, silicates, clays,

Silicas, metal oxides, polymers (for example PVA, PVC, PE, PP, polystyrene, PTFE, PVDF in powder form or as pellets) and setting retarders or accelerators as well as liquid polymers such as mineral oils or silicone oils can be added at the beginning, during or at the end of the production process become. Preferably, based on 100 parts by weight of

Alkaliorganosiliconaten and fatty acids or fatty acid esters added at most 50, more preferably at most 10 parts by weight of further ingredients.

The first and the second step of the invention

Procedure can also be partial or completely parallel

be performed. For example, during the drying of an aqueous alkali organosiliconate in a

Paddle dryer or on a fluidized bed the fatty acid or their derivatives are added and thus the economic efficiency of the process can be increased.

All the above symbols of the above formulas each have their meanings independently of each other. In all

Formulas is the silicon atom tetravalent.

In the following examples and comparative examples, unless stated otherwise, all amounts and

Percentages by weight and all

Reactions are carried out at a pressure of 0.10 MPa (abs.)

carried out .

example 1

Implementation of potassium methyl silicate WACKER SILRES ^® BS 16 with lauric acid

At room temperature, 11 g (0.045 mol of silicon) of an aqueous solution of potassium methyl siliconate WACKER SILRES ^® BS 16

(Wacker Chemie AG, silicon content: 4.1 mmol / g, potassium content: 4.26 mmol / g), 3.0 g (0.015 mol) of lauric acid are added

(Merck KGaA) and add so much ethanol that a clear solution is formed (a total of 3.8 g). The solution is then concentrated at room temperature under reduced pressure and the pulpy residue dried in a vacuum oven at 100 ° C and 3 hPa for two hours. 6.9 g of a white free-flowing powder are isolated, which is clearly submerged in water

Foaming dissolves.

In the following application examples were customary

MGP 1 used in powder form: MGP 1 is a low-filled lime-plaster machine plaster with a proportion of settable gypsum phases of about 60% and one of them following proportion of about 40% fillers), MGP 2 is a highly filled lime-gypsum machine plaster with a share of

settable gypsum phases of about 20% and a consequent proportion of about 80% fillers). The two plasters were treated with different amounts of potassium methylsiliconate

WACKER BS Powder SILRES ^® powder S Wacker Chemie AG (not of the invention) and the powder obtained from Example 1

(According to the invention) in dry form effectively in a so-called.

Planetary mixer, as described in EN 196-1, mixed for 30 seconds. Subsequently, this dry mixture was added in portions to the mixing water in accordance with the recipe indicated on the package with stirring and mixed with the planetary mixer, as described in EN 196-1, to form a homogeneous slurry

(Machine plaster MGP 1: 300 g of powder and 180 g of water,

Machine plaster MGP 2: 300 g powder and 105 g water according to the instructions). Subsequently, the obtained slurry was poured into PVC rings (diameter: 80 mm, height 20 mm) and the setting of gypsum plaster at 23 ° C and 50% relative

Humidity waited more than 6 hours. After demoulding the gypsum plaster test specimens from the rings, these were used for another 24

Stored separately at 23 ° C and 50% relative humidity, each standing separately on the lateral surface and then dried in a convection oven at 40 ° C to constant weight of the test specimens. In the case of Application Examples 1-5, the test specimens were before

Storage of water stored for 28 days under standard conditions (23 ± 2 ° C, 50 ± 5% relative humidity according to EN 1062-3). to

Determination of water absorption Based on DIN EN 520, the test specimens were stored after determination of the dry weight for 120 min in a plastic tub under water, the

Samples were placed horizontally on metal mesh and the

Water supernatant above the highest point of the specimens 5 mm amounted to. After 120 minutes, the test specimens were removed from the water, drained on a water-saturated sponge, and on a balance with an accuracy of 0.01 g from the wet weight and the dry weight the percentage

Water absorption after 120 min according to the formula

Percentage water consumption = {[mass (wet) - mass (dry)] / mass (dry)} · 100% calculated. After weighing, only a few per test specimen

Seconds lasted, the specimens were promptly returned to the plastic tray under water. After a

Total time of 24 h under water, the test specimens were again taken out of the water and the percentage of water uptake after 24 h, as previously described for 120 min, determined.

Application Examples 1-5: Hydrophobing of Two

Maschinengipsputze with varying dosages on one

Potassium methylsiliconate powder WACKER SILRES ^® BS Powder S

(Molar ratio of alkali metal to silicon: 0.65) and the powder obtained from Example 1.

It shows that a so-called highly filled gypsum plaster, in contrast to the low-gypsum plaster with the conventional siliconate powder, can only be insufficiently protected against water absorption (see 24 h value).

Table 1 shows in the case of Application Examples 1 and 2 that the potassium methylsiliconate powder (not according to the invention) the 2 -h water and the 24 -h water uptake of a low-filled engine plaster (MGP 1) at a dosage of 0.22 wt .-% greatly reduced.

In the case of application examples 3 and 4, Table 1 shows that even 0.26% by weight of potassium methylsiliconate powder (not According to the invention) although the 2-h, but not the 24 -h water absorption of a highly-filled machine plaster (MGP 2) can be reduced to values at the same time less than 10 wt .-%.

Unexpectedly, in the case of Application Example 5, however, with 0.26 wt.% Of the powder obtained from Example 1, both the 2-hr and 24-hr. Water intakes of the high-duty engineered plaster (MGP 2) are possible to values significantly lower than 10% by weight.

Claims

Claims:

A process for the preparation of powdery solids (F) comprising alkali organosiliconates and fatty acids, in which

in a first step with alkali metal organosiliconates

Fatty acids or fatty acid esters or mixtures thereof are converted into liquid mixtures in water and dried in a second step, the liquid mixtures to the powdery solids (F).

2. The method of claim 1, wherein the

Alkali organosiliconates Salts of organosilanols, of their hydrolysis / condensation products, or of organosilanols together with their hydrolysis / condensation products with alkali cations, in which the molar ratio of cation to silicon is> 0.1.

3. Method according to one or more of the preceding

Claims in which the alkali organosiliconates are sodium or potassium organosiliconates or mixtures thereof.

4. Method according to one or more of the preceding

Claims in which the organo radical is a monovalent unsubstituted or halogen, amino, alkoxy or silyl substituted hydrocarbon radical containing 1 to 18 carbon atoms.

5. The method according to one or more of the preceding

Claims in which the fatty acids are selected from caprylic acid, 2-ethylhexanoic acid, pelargonic acid, capric acid, undecanoic acid, undecacid acid, lauric acid, Myristic acid, pentadecanoic acid, palmitic acid,

Stearic acid, palmitoleic acid, oleic acid and mixtures thereof.

Process according to one or more of the preceding claims, in which the molar ratio of fatty acid to the alkali metal bound in the alkali metal organosiliconate is 0.05 to

1, 0 is.

Process according to one or more of the preceding claims, wherein 10 to 200 parts by weight of water are used in the first step, based on 100 parts by weight of alkali organosiliconates and fatty acids or fatty acid esters.

Method according to one or more of the preceding claims, wherein in the first step solubilizer is added, which is selected from alcohols and ketones.