ES2949524T3 - Aqueous detergent or cleaning agent compositions containing natural waxes as clouding agents - Google Patents

Abstract

The invention relates to aqueous washing or cleaning agent compositions containing natural waxes as opacifying agents, to the use of natural waxes as opacifying agents in aqueous washing or cleaning agent compositions and to a method for producing said compositions. (Automatic translation with Google Translate, without legal value)

Description

DESCRIPTION

Aqueous detergent or cleaning agent compositions containing natural waxes as clouding agents

The present invention relates to aqueous detergent or cleaning agent compositions containing natural waxes as clouding or opacifying agents, the use of natural waxes as clouding agents in aqueous detergent or cleaning agent compositions, and a process for the production of such compositions.

Consumer products in the field of cleaning hard surfaces and textiles, as well as human skin and hair, in particular aqueous detergent or cleaning agent compositions, typically contain surfactants as washing active substances which, due to their Surfactant properties reduce interfacial tensions so that impurities, such as fats and oils, can be emulsified and removed with the washing solution. In addition to the main surfactants mentioned above, a number of additives can also be used, which also contribute to the washing or cleaning performance. Such additives include, for example, hydrotropes (solubilizers), solvents, enzymes, acids, alkalis or complexing agents. It is also possible to use auxiliaries that can influence the stability of detergent or cleaning agent compositions, such as pH regulators or buffer systems, antioxidants, UV filters, preservatives, rheological additives or electrolytes.

Finally, substances that primarily appeal to the human senses, such as, for example, fragrances or colorants, may also be included in the aqueous detergent or cleaning agent compositions.

A special form of product aesthetics of aqueous detergent or cleaning agent compositions lies in the degree of their translucency (transmission of light through them). Depending on the technology used, the transmission of light through it can vary from completely transparent intermediate stages to completely opaque (impermeable to light), passing through partially translucent intermediate stages. In addition, certain additional optical effects, such as pearlescent, can be achieved. Such techniques that influence light transmission can give aqueous detergent or cleaning agent compositions not only aesthetic but also functional properties and serve, for example, to moisturize the skin.

Today a number of surfactant detergents and cleaning products (so-called "rinseoff products") and cleaning cosmetics such as liquid soaps, shower gels or foam baths and shampoos are known, the translucency of which is cloudy, for example, milky. In the aforementioned agents, this turbidity is now achieved almost exclusively by the addition of special plastic dispersions, in particular those based on styrene-acrylate copolymers (see, for example, styrene/acrylate polymer with CAS RN 9010-92- 8), where the plastic particles are in the form of solid particles, mostly with a particle size of about 170 nm and above. Since such styrene-acrylate copolymer particles are not biodegradable, it is now recommended not to use them in personal care products for water protection reasons (see publication on the website of the German Federal Environment Agency of 16 March 2016: "Mikroplastik in Kosmetika - Was ist das?", Microplastics in cosmetics - what are they?).

It is also advantageous from the point of view of environmental compatibility if the other components of the aqueous detergents or cleaning products are also preferably biodegradable in wastewater treatment plants, such as the known biodegradable anionic or non-ionic surfactants, for example. For example, based on vegetable oils.

Another disadvantage of the aforementioned styrene-acrylate copolymers is that they tend to settle in aqueous detergent or cleaning agent compositions, so that after some storage time the corresponding products often have a visually unacceptable sediment. Of course, the acceptance of a product affected by it is harmed by the final consumer as a result of the sedimentation described. This is particularly notable (but not only) when styrene-acrylate copolymers are used in aqueous detergent or cleaning agent compositions that are highly diluted and/or that have a higher concentration of electrolytes (e.g., dissociable inorganic salts), in particular sodium carbonate. For the purposes of the present invention, increased electrolyte concentration means a content of such electrolytes of 0.75% by weight or more, in particular a content of 1.0% by weight or more, in each case referring to the total mass of an aqueous detergent or cleaning agent composition under consideration. Strong dilution or a very dilute aqueous detergent or cleaning agent composition (for example, a composition diluted in water) is understood in the context of the present invention, a composition whose dynamic viscosity is <100 mPas, preferably <10 mPas, each measured with a Brookfield rotational viscometer, LV1 spindle at 100 rpm and a temperature of 20°C.

In aqueous detergent or cleaning agent compositions containing styrene-acrylate copolymers as a clouding agent, particularly those that are highly diluted and/or have a higher concentration of electrolytes, unwanted sedimentation of the styreneacrylate copolymer after a storage period of approximately three to six months at a temperature of 23 °C, but especially at elevated temperatures of approximately 40 °C or in the range of 40 °C to 60 °C. Of detergent compositions that survive the aforementioned storage at 40 °C or in the range of 40 °C to 60 °C without any appreciable loss of product quality, that is, for example, without recognizable signs of sedimentation, on the other On the other hand, it is generally assumed that they can be stored under real-world conditions (fluctuating temperatures due to seasons and times of day, etc.) for at least two years with constant quality. Furthermore, a positively passed storage stability test (at 40°C or in the range 40°C to 60°C) also indicates the suitability of the products for distribution in warmer climate zones.

WO 03/033634A1 describes low viscosity clouds without anionic surfactants for use in household surfactant products containing wax components, amphoteric surfactants, partial glycerides of fatty acids, polyglycol esters of fatty acids and, where appropriate, polyols in a specific weight ratio. As auxiliary compounds or additives, certain waxes can also be included, among others.

WO 92/11330 describes a process for the production of cleaning and personal care products, in which a wax emulsion containing alkyl glycoside as an emulsifier is mixed with the other components of such products.

US 2011/0172135 describes compositions containing nanowax particles and intended for the simultaneous washing and waxing of a motor vehicle.

US 5,496,493 describes an "ultra-gentle personal cleansing stick containing wax in smaller particle sizes."

US 5,306,488 relates to a hair cosmetic composition containing a wax microdispersion and a method of treating hair using the composition.

DE 100 34 619 A1 discloses low-viscosity opacifying or clouding agents without anionic surfactants, as well as opacifying agent preparations based on wax bodies.

WO 99/01529 A1 describes a process for producing intense white opacities in aqueous surfactant preparations.

US 2,519,062 relates to a lotion-shampoo, in particular a cloudy liquid shampoo.

The company's publication "Koster Keunen: Carnauba Milk - Natural (Wax #576B) Watertown, CT, USA 2015" describes an aqueous dispersion of carnauba wax for various purposes.

It was a primary object of the present invention to provide cloudy aqueous detergent compositions that, even after prolonged storage and even at elevated temperatures, had no or very little tendency to settle, which largely or completely avoided the use of conventional plastics. . Clouding agents based on known plastic-based clouding agents and which could preferably be combined with known biodegradable anionic or non-ionic surfactants are largely dispensed with. The invention should preferably provide the aforementioned cloudy aqueous detergent or cleaning agent compositions that retain said advantageous properties even when highly diluted and/or in the presence of a high concentration of electrolytes, without tending to sedimentation, in particular due to the precipitation of the clouding agent, and without the addition of other additives being necessary.

Another specific object of the present invention was to provide a new use of biodegradable waxes, preferably natural, as a clouding agent in aqueous detergent or cleaning agent compositions.

Another object of the present invention was to provide a process for the production of cloudy aqueous detergent or cleaning agent compositions of the type specified above.

The invention is further described and/or defined in the appended claims. Specific and/or preferred embodiments and embodiments of the invention are described in more detail below. Unless otherwise indicated, preferred aspects or embodiments of the invention may be combined with other aspects or embodiments of the invention, in particular with other preferred aspects or embodiments. The combination of preferred aspects or embodiments with each other in each case again results in preferred aspects or embodiments of the invention. The embodiments, aspects or properties described in connection with the present invention for the aqueous detergent or cleaning agent compositions according to the invention or described as preferred also apply correspondingly or mutatis mutandis to the uses or methods according to the invention.

If compositions, uses or procedures are described below that "comprises" or "contains" specific embodiments, components or characteristics, the corresponding variant of the compositions, uses or procedures must also be disclosed to be understood in a more limited scope that "consists" in these specific embodiments, components or features.

It has now been discovered that the main object is achieved by an aqueous detergent or cleaning agent composition provided in accordance with the invention, which contains a quantity of particles clouding the composition of one or more waxes, each selected from the group consisting in montana wax, carnauba wax and their mixtures, where 85% by volume or more of the particles of these waxes have a particle size <15 |jm measured by laser diffraction ("D85" value), as defined in the attached claims, and where the composition further comprises sodium carbonate.

The carnauba wax and montan wax particles contained in the compositions according to the invention can be used in any mixing ratio. However, a composition according to the invention of the type described above is preferred, where the amount of particles clouding the composition comprises carnauba wax or a mixture of carnauba wax with montan wax. Particularly preferred is such a composition according to the invention or preferred composition according to the invention, in which the amount of particles clouding the composition comprises only carnauba wax.

Carnauba wax (synonym: carnauba wax, Brazilian wax, E 903; registered under CAS RN 8015-86-9 in the European Commission's "CosIng database" for information on cosmetic substances and ingredients, which, e.g. , are specified in the EU Cosmetics Regulation No. 1223/2009) is a well-known natural vegetable wax, which can be obtained from the leaves of the Brazilian fan palm Copernicia prunifera or carnauba palm (Copernicia cerifera). The main ingredients are esters of wax acids, u>-hydroxycarboxylic acids and cinnamic acids with wax alcohols and diols, free wax acids such as carnauba acid and long-chain alcohols, diols and saturated hydrocarbons.

Mountain wax (synonym: mountain wax, registered with CAS RN 8002-53-7 in the Coslng database) can be produced from natural lignite. The main components are esters of C22-C34 fatty acids with C24, C26 and C28 wax alcohols.

Aqueous liquid detergent or cleaning agent compositions suitable for the purposes of the present invention are in particular those for use in the home or in industry, preferably those for cleaning hard surfaces such as general purpose or kitchen cleaners.

The clouding particles described herein allow in particular the formulation of storage-stable compositions according to the invention with high concentrations of electrolytes such as preferably sodium carbonate (also known as soda), for example, in concentrations of at least 0.75% by weight based in the total mass of the composition, and lead to an attractive and desired milky white turbidity with a surprisingly low tendency to sedimentation. Sodium carbonate is known, among other things, as a natural grease-removing agent, so the preferred washing or cleaning agent compositions containing sodium carbonate described herein are particularly suitable for use in all areas where The cleaning effect on grease or fats is particularly important. An aqueous detergent or cleaning agent composition according to the invention further contains sodium carbonate.

The detergent or cleaning agent composition according to the invention contains wax particles with a defined particle size distribution measured by laser diffraction: 85% by volume or more of the particles of the waxes or wax mixtures mentioned above in the compositions according to the invention they have a particle size < 15 μm measured by laser diffraction.

An inventive or preferred inventive detergent or cleaning agent composition contains:

an amount of particles that cloud the composition of a wax or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, preferably each selected from carnauba wax or a mixture of carnauba wax carnauba and montana wax, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm

and

sodium carbonate, preferably a proportion of sodium carbonate of at least 0.75 ^% by weight, particularly preferably in the range of 0.75% by weight to 2.0% by weight, in each case based on the mass total of the composition according to the invention.

In own investigations it was possible to show that the detergent or cleaning agent compositions according to the invention with sodium carbonate, mentioned above, remained stable to sedimentation over a period of several months under practically relevant conditions.

Preference is also given to an inventive or preferred aqueous detergent or cleaning agent composition according to the invention, wherein 90% by volume or more, preferably 95% by volume or more, of the particles consist of one or more waxes , each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, have a particle size <15 μm, preferably a particle size <12 μm, especially preferably a particle size <10 μm, very especially preferably a particle size <7 μm, most preferably a particle size of <1.0 μm. Here preference is given to a composition according to the invention where 90% by volume or more of the particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, have a particle size of <7 μm, especially preferably a particle size <1.0 μm. Furthermore, such a composition according to the invention is preferred where 95% by volume or more of the particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, they have a particle size of <7 μm, more preferably they have a particle size of <1.0 μm.

Preference is also given to an inventive or preferred aqueous detergent or cleaning agent composition according to the invention, wherein 90% by volume or more, preferably 95% by volume or more, of the particles consist of one or more waxes , each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, have a particle size in the range of 0.1 to 15 μm, preferably a particle size in the range of 0.1 to 12 μm, particularly preferably a particle size in the range of 0.1 to 10 μm, very particularly preferably a particle size in the range of 0.1 to 7 μm and most preferably a size particle size in the range of 0.1 to 1.0 μm. Also preferred is a composition according to the invention where 90% by volume or more of the particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, have a size of particle in the range of 0.1 to 1.0 μm. Furthermore, such a composition according to the invention is preferred, wherein 95% by volume or more of the particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof , have a particle size in the range of 0.1 to 1.0 μm.

The particle size distribution in the aqueous detergent or cleaning agent compositions according to the invention is determined in a manner known per se by laser diffraction.

The thus determined values D10, D50 or D90 of the cumulative frequency distribution of the volume average size distribution function indicate that 10% by volume, 50% by volume or 90% by volume of the particles of a micronized wax have a particle size equal to or smaller than the value specified in each case. The size distribution curve of the micronized waxes is preferably determined according to ISO (International Organization for Standardization) 13320-1 (1999) and more preferably with a laser diffraction device, for example, of the type "Mastersizer 2000" or " Mastersizer 3000", both from Malvern, Great Britain, in both cases according to the manufacturer's instructions. The scattered light signals are evaluated according to Mie theory, which also takes into account the refraction and absorption behavior of the micronized waxes.

The D50 value relative to the volume of the wax particles contained in an aqueous detergent or cleaning agent composition according to the invention is preferably not more than 1 μm. At the same time, the D90 value related to the volume of said wax particles is preferably not greater than 2 μm.

Particular preference is given to aqueous detergent or cleaning agent compositions of the invention or preferred according to the invention with the particle size distribution properties described above as preferred, which are such that after a storage period of 6 months At a temperature of 40°C, the volume-based D50 value is not greater than 1 μm. Particularly preferably, the volume-based D90 value in these compositions after said storage is at the same time not greater than 2 μm.

Wax dispersions with a desired particle size distribution are known per se and are commercially available, for example, from the company Keim Additec, Kirchberg, Germany. Furthermore, such wax dispersions and processes for their production are known to those skilled in the art, for example, from R. Heusch, Ullmann's Encyclopedia of Industrial Chemistry, 5th edition (possibly more recent editions) 1987, A9, page 297 et seq. .

In general, similar rules apply to the production of wax dispersions as to the production of emulsions, since these are mixtures of hydrophilic (e.g. water) and hydrophobic (usually oils or waxes), especially liquids. For its production, for example, above the dropping point, melted liquid wax can be added to boiling water, or vice versa. The dropping point is the temperature at which a substance begins to flow under standardized test conditions. The substance is heated in a controlled manner until it changes from the solid to the liquid state of aggregation. During the measurement, the temperature at which the first drop of the sample is released is recorded.

Suitable emulsifiers that greatly reduce the interfacial tension between two substances (up to approx. 1 mN/m) can be selected in preliminary empirical tests on the basis of their chemical structure and polarity and can be pre-dissolved in both the wax and the water phase. Mixing the two phases, usually liquid, is usually carried out with vigorous stirring, often using rotor-stator systems with high shear forces. If emulsifiers are used, they coat and stabilize the newly formed interfaces (e.g. disperse the internal phase of finer wax droplets into a continuous external aqueous phase), so that the fresh emulsion produced against unwanted droplet growth large ones at the expense of smaller ones (the so-called "Ostwald ripening" leads to highly polydisperse systems) and the combination of several droplets is stabilized to form a large droplet (the so-called "coalescence"). Unlike "microemulsions", usual (macro)emulsions are generally thermodynamically unstable. Depending on the type (anionic, nonionic, cationic), the stabilizing properties of emulsifiers are based on electrostatic and/or steric repulsion effects. Various scientific rules and theories known to those skilled in the art should be used to better understand two-phase systems, for example, "DLVO theory", "Bancroft rule", "HLB system" (Hydrophilic-Lipophilic Equilibrium) according to Griffith, or the "Davis procedure." In addition to thermodynamics, kinetics also plays an important role in the production of emulsions. When the internal phase splits, the energy input (e.g. by strong shear) forms a large number of fine particles. The large surface area created in this way must be covered with emulsifying molecules as quickly (influence of kinetics) and permanently (influence of thermodynamics) as possible. It has proven advantageous to combine different emulsifiers with each other.

Over time, unstable emulsions show effects such as creaming and sedimentation. The presence of the smallest possible monodisperse particles, small differences in density between the two phases and a high viscosity of the continuous phase have a stabilizing effect. A low, water-diluted viscosity of the external phase poses a greater challenge to the long-term storage stability of emulsions and dispersions. Only very small particles with a diameter of < 100 nm (semitransparent microemulsions, which exhibit a Tyndall effect and represent a transition stage to true solutions) are thermodynamically stable (i.e., stabilized by entropy) and show little or no creaming. or sedimentation phenomena. With particle or particle size ranges of 200 to 500 nm, emulsions diluted in water tend to flocculate and/or aggregate droplets or primary particles. Such particle growth "clusters" may be precursors to coalescence and thus irreversible fusion into larger droplets or particles. Macroscopically, such phenomena then lead to visible instabilities in the two- or multi-phase system. Likewise, dissolved electrolytes (salts) increase the probability of instabilities occurring during the storage period of emulsions and dispersions. The combination of the thin external continuous phase such as water and the salt dissolved in it poses a particular challenge to the stability of an emulsion or dispersion.

The inventive or preferred aqueous detergent or cleaning agent compositions contain wax particles with the particle size distribution or preferred particle size distribution given above, preferably in a certain total amount: the total amount of particles of a wax or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, in an inventive or preferred composition according to the invention, is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.7% by weight, particularly preferably in the range of 0.01 to 0.5% by weight, most preferably in the range of 0.01 to 0.1 % by weight, based on the total weight of the composition.

Accordingly, a detergent or cleaning agent composition according to the invention or a preferred composition according to the invention containing

- A quantity of particles that cloud the composition of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof,

- wherein 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm,

and

wherein the total amount of particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, in the composition is in the range of 0.01 to 1.0% in weight, preferably in the range of 0.01 to 0.7% by weight, particularly preferably in the range of 0.01 to 0.5% by weight, most preferably in the range of 0.01 to 0.01 to 0.5% by weight 0.1% by weight, in each case based on the total mass of the composition,

and

sodium carbonate, preferably a proportion of sodium carbonate of at least 0.75% by weight, particularly preferably in the range of 0.75% by weight to 2.0% by weight, in each case based on the mass total composition.

Preferred aqueous detergent or cleaning agent compositions according to the invention contain a compositional clouding quantity of particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, wherein 90% by volume or more of the particles of these waxes have a particle size measured by laser diffraction in the range of 0.1 to 12 μm, preferably in the range of 0.1 to 7 μm, and where the total amount of the mentioned particles is in the range of 0.01 to 1.0% by weight, based on the total mass of the composition.

Also preferred are the inventive or preferred aqueous detergent or cleaning agent compositions that contain a quantity of particles that cloud the composition of a wax or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures of the same, where 90% by volume or more, preferably 95% by volume or more of the particles of these waxes have a particle size measured by laser diffraction in the range of 0.1 to 12 μm, preferably in the range of 0 .1 to 7 μm, and where the total amount of the mentioned particles is in the range of 0.01 to 0.7% by weight, based on the total mass of the composition.

In preferred embodiments, the aqueous detergent or cleaning agent compositions according to the invention contain other components in addition to the particles described in more detail above consisting of one or more waxes with the indicated or preferred particle size distributions and with the total quantity given or optionally indicated as preferred. In particular, a composition according to the invention is preferred which comprises:

- a proportion of one or more surfactants, each selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate sodium and surfactants, which can be obtained by neutralizing fatty acids with alkanolamines, and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide,

I

a proportion of sodium carbonate of at least 0.75% by weight, with respect to the total mass of the composition, preferably comprising a proportion of sodium carbonate in the range of 0.75% to 2.0% by weight ,

I

one or more emulsifiers, preferably selected from the group consisting of anionic emulsifiers and nonionic emulsifiers.

Sodium laureth sulfate is known per se as an ingredient in cleaning, personal care, and cosmetic products. This is a mixture of substances that, according to the Coslng database, contains or may contain the following substances, each of which is identified by the CAS (Chemical Abstracts Services) registration number known to the person skilled in the art. : CAS RN 3088- 31-1; 9004-82-4; 68891-38-3; 1335-72-4; 68585-34-2; 91648-56-5; 221-416-0; 500-234-8; 500-223-8; 293-918-8. In the strictest sense, sodium laureth sulfate is understood to be the sodium salts of the ether sulfates of ethoxylated C12-C14 fatty alcohols. All these substances and their mixtures in any mixture ratio should be covered by the term "sodium laureth ether sulfate", in particular the sodium salt of polyethylene glycol mono-C12-C14-alkyl ether sulfate with CAS-RN 68585-34-2 .

Sodium lauryl sulfate is also known per se as an ingredient in cleaning, personal care and cosmetic products and describes sodium salts of alkyl alcohol sulfates (C12-C16) (CAS RN: 73296-89-6), in the sense stricter sodium dodecyl sulfate (CAS RN: 151-21-3). All of these substances and mixtures thereof in any mixture ratio should be covered by the term "sodium lauryl sulfate."

Primary, secondary and tertiary C1-C4 alkylamines, in which the C1-C4 alkyl chains may be linear or branched, and Mixtures of these C1-C4 alkylamines in any mixture ratio.

Triethanolamine (also known as 2,2',2"-nitrilottriethanol or [tris(2-hydroxyethyl)amine]) is preferably used as an alkanolamine, if it corresponds to the commercially available purity, i.e. possibly still containing byproducts and impurities produced during production quantity acceptable for the purpose.

Fatty acids suitable for the production of the surfactants described above, which can be obtained by neutralizing fatty acids with alkanolamines, are in particular fatty acids or mixtures of fatty acids of natural origin, for example those from vegetable oils which generally have an even number of carbon atoms. Suitable vegetable oils can be obtained from known oilseed plants, for example from olives, sesame, flax, rapeseed, hemp or sunflower. Examples of suitable fatty acids, which can be used individually or in any mixture ratio, are those with 14 to 22 carbon atoms (C14-C22), preferably those with 16 to 18 carbon atoms (C16-C18), which are preferably linear chain and have 0, 1 or 2 double bonds in the molecule. Fatty acid mixtures are preferably used with an average content of C18 fatty acid(s) with a single double bond in the molecule (C18:1; e.g. oleic acid) of 60 to 75% by weight, preferably approximately 68% by weight. Preference is given, for example, to fatty acid mixtures that are predominantly C16 (approx. 10 to 18% by weight of the fatty acid mixture), C18 (approx. 2 to 5% by weight of the fatty acid mixture) , C18:1 (approximately 63 to 72% by weight of the fatty acid mixture) and C18:2 fatty acids (approximately 8 to 13% by weight of the fatty acid mixture). The aforementioned fatty acids or fatty acid mixtures are preferably obtained or produced from olive oil.

Lauryl/myristyl glucoside refers here to the known individual substances lauryl glucoside and myristyl glucoside and their mixtures in any proportion to each other. Lauryl glucoside is also known as dodecyl D-glucoside (CAS RN: 27836-64-2). Myristyl glucoside is also known as tetradecyl D-glucoside (CAS RN 54549-26-7).

PEG-4 Rapeseed amide (designation according to the "International Nomenclature of Cosmetic Ingredients", INCI; cf. International Dictionary and Manual of Cosmetic Ingredients, 15th edition 2014, Personal Care Products Council, ed.; CAS RN 85536-23- 8) can be produced from rapeseed oil and is known per se, for example, as an ingredient in cleaning products or cosmetics.

The aforementioned proportion of one or more surfactants, each selected from the group consisting of anionic surfactants and nonionic surfactants, is in compositions according to the invention or preferred compositions according to the invention preferably in the range of 1.0 to 7.0% by weight, preferably in the range of 1.5 to 6.0% by weight and especially preferably in the range of 2.0 to 4.0% by weight, in each case referred to the total mass of the aqueous composition of detergent or cleaning agent.

In a preferred embodiment, the aqueous detergent or cleaning agent composition according to the invention or preferred according to the invention comprises a proportion of sodium carbonate of at least 0.75% by weight, in particular a total sodium carbonate content. sodium in the range of 0.75 to 2.0% by weight, preferably a total sodium carbonate content in the range of 0.8 to 1.5% by weight, in each case based on the total mass of the composition .

In a specific preferred embodiment, the composition according to the invention thus comprises:

an amount of particles that cloud the composition of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, where 90% by volume or more of the particles of these waxes have a particle size measured by laser diffraction in the range of 0.1 to 15 μm and the total amount of the aforementioned particles is in the range of 0.01 to 1.0% by weight, preferably in the range of 0, 01 to 07% by weight, with respect to the total mass of the composition,

- a proportion in the range of 1.0 to 7.0% by weight, with respect to the total mass of the composition, of one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants, which can be obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the surfactants Nonionics are preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide,

- a proportion of sodium carbonate in the range of 0.75% by weight to 2.0% by weight, based on the total mass of the composition,

- optionally one or more emulsifiers, preferably selected from the group consisting of anionic emulsifiers and nonionic emulsifiers

and

- water as solvent.

A particularly preferred embodiment of an inventive or preferred aqueous cleaning agent detergent composition according to the invention comprises:

- water, preferably in an amount in the range of 90 to 97% by weight, particularly preferably in the range of 92 to 96% by weight, in each case based on the total mass of the composition;

- one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants obtained neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 colzaamide, preferably in an amount in the range of 1.5 to 6.0 % by weight, particularly preferably in the range of 2.0 to 4.0% by weight, in each case based on the total mass of the composition;

- sodium carbonate, preferably in an amount in the range of 0.75 to 2.0% by weight, particularly preferably in the range of 0.8 to 1.5% by weight, in each case based on mass total composition;

- an amount of particles that cloud the composition of one or more waxes each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more, preferably 90% by volume or more, of the particles of these waxes have a particle size measured by laser diffraction of < 15 μm, preferably in a total amount in the range of 0.01 to 1.0% by weight, particularly preferably in the range from 0.01 to 0.5% by weight, more preferably in the range of 0.01 to 0.1% by weight, in each case based on the total mass of the composition.

and

- optionally other components, preferably in a total amount of up to 2.5% by weight, especially preferably up to 2.0% by weight, in each case based on the total mass of the composition.

The sum of the weight percentages of the individual components in the above-mentioned particularly preferred embodiment amounts to 100% by weight.

Other possible components for the compositions according to the invention or preferred compositions according to the invention are components acceptable for aqueous detergents or cleaning agents, preferably an emulsifier or several emulsifiers, in particular selected from the group consisting of anionic emulsifiers and nonionic emulsifiers; complexing agents; solvents, in particular solvents miscible with water in the indicated range of quantities; disinfectants; biocides; perfumes and/or dyes.

Suitable anionic emulsifiers may be selected, for example, from the group consisting of primary and secondary C8-18 alkyl sulfates, preferably fatty alcohol ether sulfates; primary and secondary C8-18 alkyl ether sulfates, also called fatty alcohol polyglycol ether sulfates, with a degree of ethoxylation of one to three; primary and secondary C8-18 alkyl ether carboxylates, also called fatty alcohol polyglycol ether carboxylates, with a degree of ethoxylation of four to ten and C12-18 alkanesulfonates, preferably secondary C12-18 alkanesulfonates.

Suitable nonionic emulsifiers can be selected, for example, from the group consisting of primary and secondary C8-18 alkyl ethoxylates, also called fatty alcohol polyglycol ethers, with a degree of ethoxylation of two to 50; C8-18 alkyl sorbitan ethoxylates, also called ethoxylated sorbitan fatty acid esters, with a degree of ethoxylation of two to 50 and C8-18 alkyl polyglucosides, also called alkylpolyglucosides, with a degree of glycosidation of one to three.

In the context of the present invention, the notation "C8-18" denotes a monovalent, linear or branched aliphatic group containing eight to 18 carbon atoms (or other corresponding number for specification with other numerical values), which may be saturated or mono- or polyunsaturated and contains only hydrogen atoms in addition to carbon atoms. As used herein, the terms "primary" and "secondary" each mean that a functional group (a group that is not purely hydrocarbon, for example, a sulfate group) of a surfactant is attached to a primary carbon atom. (which, in addition to two hydrogen atoms, also carries a hydrocarbon radical as a substituent) or to a secondary carbon atom (which, in addition to a hydrogen atom, also carries two hydrocarbon radicals as substituents).

Emulsifiers such as the anionic or nonionic emulsifiers mentioned above often also have surface-active properties and can also act as surfactants. Therefore, if the aqueous detergent or cleaning agent compositions according to the invention also contain emulsifiers such as the anionic or nonionic emulsifiers described in detail above in addition to the proportion detailed above of a surfactant or more surfactants, for the purposes of the present invention, to determine the proportion by weight of anionic surfactants and nonionic surfactants and when necessary for understanding, the proportions of this surfactant or these surfactants will be added to the proportions of the anionic or nonionic emulsifiers, each in % by weight with respect to the total mass of the composition. In other words, for the purposes of determining the weight fraction, the corresponding emulsifiers are considered as surfactants.

The aqueous detergents or cleaning agents according to the invention described in detail above, including their preferred embodiments also described in detail above, are preferably fluid, approximately with a density like water, and preferably each has a dynamic viscosity <100 mPa s, preferably < 10 mPa s, each measured with a Brookfield rotational viscometer, LV1 spindle at 100 rpm and a temperature of 20 °C. The dynamic viscosity is preferably determined according to ISO 1652 (IS01652:2011) or analogously or according to this specification.

Accordingly, preference is also given to an inventive or preferred detergent or cleaning agent composition according to the invention containing:

-an amount of particles that cloud the composition of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, preferably each selected from carnauba wax or a mixture of carnauba wax carnauba and montana wax, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm,

where the dynamic viscosity of the composition <100 mPas, preferably <10 mPas in each case measured with a Brookfield rotational viscometer, LV1 spindle at 100 rpm and a temperature of 20 ° C

and

- sodium carbonate, preferably a proportion of sodium carbonate of at least 0.75% by weight, especially preferably in the range of 0.75% by weight to 2.0% by weight, referring in each case to the total mass of the composition.

In own investigations, it was possible to show that the detergent or cleaning agent compositions according to the invention containing electrolytes remained stable to sedimentation over a period of several months under practically relevant conditions, even at the high dilution mentioned above.

The present invention also encompasses the use of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, as clouding agents in aqueous detergent or cleaning agent compositions, as defined in the attached claims.

All configurations and combinations specified above for the detergent or cleaning agent composition according to the invention, including the configurations and combinations specified as preferred in each case, also apply without restriction and, if applicable, mutatis mutandis to the specified use according to the invention. previously, and vice versa.

Preference is given to a previously mentioned use according to the invention or to a preferred use according to the invention, wherein the one or more waxes are selected from the group consisting of carnauba wax and mixtures of carnauba wax with montan wax.

Also preferred according to the invention is a previously mentioned use according to the invention or a preferred use according to the invention, wherein the one or more waxes are each present in the form of particles, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm.

The aforementioned use where the aqueous detergent or cleaning agent composition further contains sodium carbonate is in accordance with the invention.

Particularly preferred is the inventive or preferred use according to the invention of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, as clouding agents, containing sodium carbonate.

Also preferred is an aforementioned use according to the invention or preferred according to the invention of a wax or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, as clouding agents. in aqueous detergent or cleaning agent compositions, where

- the one or more waxes are each in the form of particles, where 85% by volume or more of the particles of these waxes having a particle size <15 μm measured by laser diffraction,

and

- preferably the total amount of particles of one or more waxes in the composition is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.5% by weight, especially preferable in the range of 0.01 to 0.1% by weight, referred in each case to the total mass of the composition.

Also preferred is an inventive or preferred use according to the invention of a wax or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, as clouding agents in aqueous detergent or cleaning agent compositions. , where

- the dynamic viscosity of the compositions is <100 mPas, preferably <10 mPas, measured in each case with a Brookfield rotational viscometer, LV1 spindle at 100 rpm and a temperature of 20 °C

and

The compositions contain sodium carbonate, especially preferably a proportion of sodium carbonate of at least 0.75% by weight, most preferably in the range of 0.75% by weight to 2.0% by weight, in each case referred to the total mass of the composition.

In many cases, preference is also given to a use according to the invention or a preferred use according to the invention indicated above, wherein the detergent or cleaning agent compositions:

They comprise a proportion of one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants which can be obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of Lauryl/myristyl glucoside and PEG-4 rapeseed, and/or

They comprise a proportion of sodium carbonate of at least 0.75% by weight, preferably a proportion of sodium carbonate in the range of 0.75% by weight to 2.0% by weight, in each case based on the total mass of the compositions.

The present invention also includes a process for producing a cloudy, aqueous detergent or cleaning agent composition, comprising the following step:

Mixing a cloudy quantity of particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a size particle size <15 μm measured by laser diffraction, with the other components of the detergent or cleaning agent composition.

All configurations and combinations specified above for the detergent or cleaning agent composition according to the invention or for use according to the invention, including the configurations and combinations specified as preferred in each case, also apply without restriction and, if applicable, mutatis mutandis to the method according to the invention specified above, and vice versa.

A previously mentioned process according to the invention is preferred, where the amount of clouding particles comprises carnauba wax or a mixture of carnauba wax with montan wax. It is also preferred a process according to the invention or a preferred process according to the invention, wherein the aqueous detergent or cleaning agent composition further comprises sodium carbonate.

Also preferred is a process according to the invention or a preferred process according to the invention, in which the total amount of particles of one or more waxes in the composition is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.5% by weight, particularly preferably in the range of 0.01 to 0.1% by weight, in each case based on the total mass of the composition.

Also preferred is an inventive or preferred method according to the invention, where the detergent or cleaning agent composition comprises:

- a proportion of one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants, which are obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide,

I

- a proportion of sodium carbonate of at least 0.75% by weight, preferably a proportion of sodium carbonate in the range of 0.75% by weight to 2.0% by weight, in each case with respect to mass total composition.

Particularly preferred is a process according to the invention or preferred according to the invention for the production of a cloudy aqueous composition of detergent or cleaning agent, which comprises the following step:

- Mixing a cloudy amount of particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm, with the other components of the detergent composition, which include sodium carbonate.

Preference is also given to an inventive or preferred process according to the invention for producing a cloudy aqueous detergent or cleaning agent composition, which comprises the following step:

- mixing a cloudy amount of particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a particle size <15 μm measured by laser diffraction, with the other components of the detergent composition, preferably including sodium carbonate,

wherein the total amount of particles of one or more waxes in the composition is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.5% by weight, especially preferably in the range of 0.01 to 0.1% by weight, referred in each case to the total mass of the composition.

Preference is also given to an inventive or preferred process according to the invention for producing a cloudy aqueous detergent or cleaning agent composition, which comprises the following step:

- mixing a cloudy amount of particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm, with the other components of the detergent composition, preferably including sodium carbonate,

where the dynamic viscosity of the composition is <100 mPas, preferably <10 mPas, measured in each case with a Brookfield rotational viscometer, LV1 spindle at 100 rpm and a temperature of 20 ° C

Examples:

The examples provided below are intended to further explain and describe the present invention without limiting its scope.

Aqueous detergent or cleaning agent compositions were produced with the representative formulations given in Table 1. The specified clouding agents (styrene-acrylate copolymer: not according to the invention, i.e. comparison; montan wax or carnauba wax: both according to the invention) were each used in particulate form, the D50 value of the volume-related particle size distribution at the beginning of the storage tests being approximately 200 nm for all clouding agents. The Formulations 1.1 and 1.3 (each with sodium carbonate) represent aqueous detergent or cleaning agent compositions according to the invention. Formulations 2.1 and 2.3 represent aqueous compositions of cleaning or washing agents (both without sodium carbonate). Formulations 1.2 and 2.2 represent non-inventive comparative compositions.

The aqueous detergent and cleaning agent compositions listed in Table 1 were then subjected to a storage test at 23°C or 40°C for six months (see Table 2). The effects of this storage test on the particle sizes or granulometric distributions of the clouding agents used in each case are given in Table 2, together with the observations of possible sedimentation phenomena that occur in the compositions after the end of the storage test. Table 2 shows the measured values averaged from several measurements.

As can be seen from the measured values and observations according to Table 2, the compositions according to the invention with an increased electrolyte content (with sodium carbonate, formulations 1.1, 1.3) like the comparison compositions without an increased electrolyte content (without sodium carbonate, formulations 2.1, 2.3) are stable to sedimentation after six months of storage under normal conditions (23 °C) as well as at elevated temperatures (40 °C). The comparison compositions (formulations 1.2, 2.2), on the other hand, showed signs of sedimentation due to precipitation of the clouding agent in individual cases even when stored under normal conditions (23 °C) and both with a high electrolyte content ( with sodium carbonate, recipe 1.2) and without a higher electrolyte content (recipe 2.2).

Furthermore, it can be seen from the data in Table 2 that even in the comparative compositions without a high electrolyte content, the particle size of the clouding agents increased significantly more during storage than in the corresponding compositions according to the invention. This effect was even clearer in the corresponding compositions with a higher electrolyte content (sodium carbonate): the differences between the maximum particle sizes of the clouding agents between the comparison compositions and the compositions according to the invention (after storage in each case) were even larger (with the respective maximum particle sizes smaller in the compositions according to the invention).

The indication "(FD&C)" in Table 1 indicates that the color so designated falls under the criteria for additives in foods, drugs or cosmetics of the US "Food, Drug and Cosmetic Act."

The indication "./." in tables 1 and 2 it means that there is no entry in the corresponding cell.

Table 1: Aqueous compositions (formulations) of detergents or cleaning agents for storage tests

Table 2. Results of the six-month storage test with the aqueous detergent or cleaning agent compositions

Claims (15)

1. An aqueous composition of detergent or cleaning agent containing a quantity of particles that cloud the composition, of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, where a 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm, where the composition also comprises sodium carbonate. 2. Composition according to claim 1, where the amount of particles that cloud the composition comprises carnauba wax or a mixture of carnauba wax with montan wax 3. Composition according to any of the previous claims, wherein 90% by volume or more, preferably 95% by volume or more, of the particles of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, have a size particle size <15 μm, preferably a particle size <12 μm, especially preferably a particle size <10 μm, most preferably a particle size <7 μm, most preferably a particle size <1.0μm. 4. Composition according to any of the previous claims, wherein 90% by volume or more, preferably 95% by volume or more, of the particles of one or more waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, have a size of particle in the range of 0.1 to 15 μm, preferably, a particle size in the range of 0.1 to 12 μm, especially preferably a particle size in the range of 0.1 to 10 μm, so very particularly preferred a particle size in the range of 0.1 to 7 μm, most preferably a particle size in the range of 0.1 to 1.0 μm. 5. Composition according to any of the preceding claims, wherein the total amount of particles of one or more waxes each selected from the group formed by montana wax, carnauba wax and mixtures thereof, in the composition, is in the range of 0.01 to 1.0% by weight preferably in the range of 0.01 to 0.7% by weight, more preferably in the range of 0.01 to 0.5% by weight, most preferably in the range from 0.01 to 0.1% by weight, in each case based on the total mass of the composition 6. Composition according to one of the preceding claims, comprising - a proportion of a surfactant or several surfactants each selected from the group consisting of anionic surfactants and nonionic surfactants, where the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants, which are obtained by neutralizing fatty acids with alkanolamines, and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide, I - a proportion of sodium carbonate of at least 0.75% by weight, with respect to the total mass of the composition, preferably comprising a proportion of sodium carbonate in the range of 0.75% by weight to 2.0 % in weigh, I - one or more emulsifiers, preferably selected from the group consisting of anionic emulsifiers and nonionic emulsifiers. 7. Composition according to any of the preceding claims, comprising - water, preferably in an amount in the range of 90 to 97% by weight, particularly preferably in the range of 92 to 96% by weight, in each case based on the total mass of the composition; - a surfactant or several surfactants, selected from the group consisting of anionic surfactants and nonionic surfactants, where the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants that are obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 colzaamide, preferably in an amount in the range of 1, 5 to 6.0% by weight, particularly preferably in the range of 2.0 to 4.0% by weight, in each case based on the total mass of the composition; - sodium carbonate, preferably in an amount in the range of 0.75 to 2.0% by weight, particularly preferably in the range of 0.8 to 1.5% by weight, in each case based on mass total composition; - contains an amount of particles that cloud the composition of one or more waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a particle size of <15 |jm measured by laser diffraction, preferably in a total amount in the range of 0.01 to 1.0% by weight, particularly preferably in the range from 0.01 to 0.5% by weight, most preferably in the range of 0.01 to 0.1% by weight, in each case based on the total mass of the composition; and - optionally other components, preferably in a total amount of up to 2.5% by weight, especially preferably up to 2.0% by weight, in each case based on the total mass of the composition. 8. Composition according to one of the preceding claims, whose dynamic viscosity is <100 mPas, preferably <10 mPas, measured in each case with a Brookfield rotational viscometer, spindle LV1 at 100 rpm and a temperature of 20°C. 9. Use of a wax or waxes, each selected from the group consisting of montan wax, carnauba wax and mixtures thereof, as a clouding agent in aqueous detergent or cleaning agent compositions, where - the one or more waxes are each in the form of particles, where 85% by volume or more of the particles of these waxes have a particle size measured by laser diffraction of <15 μm and - aqueous detergent or cleaning agent compositions comprise sodium carbonate, 10. Use according to claim 9, wherein - the total amount of particles of the wax or the various waxes in the compositions is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.5% by weight, particularly preferably in the range of 0.01 to 0.1% by weight, based in each case on the total mass of the compositions, I - the one or more waxes are each selected from the group consisting of carnauba wax and mixtures of carnauba wax with montana wax. 11. Use according to any of claims 9 to 10, wherein the detergent or cleaning agent compositions: - comprise a proportion of one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants, which are obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide, I - comprise a proportion of sodium carbonate of at least 0.75% by weight, preferably a proportion of sodium carbonate in the range of 0.75% by weight to 2.0% by weight, in each case based on mass total of the compositions. 12. Procedure for obtaining a cloudy aqueous composition of detergent or cleaning agent, comprising the following step: - mixing a quantity of particles of one or more clouding waxes, each selected from the group consisting of montana wax, carnauba wax and mixtures thereof, where 85% by volume or more of the particles of these waxes have a particle size <15 μm measured by laser diffraction, with the other components of the detergent or cleaning agent composition, wherein the aqueous detergent or cleaning agent composition comprises sodium carbonate as an additional component. 13. Method according to claim 12, where the amount of clouding particles comprising carnauba wax or a mixture of carnauba wax with montana wax, 14. Method according to any of claims 12 to 13, wherein the total amount of particles of one or more waxes in the composition is in the range of 0.01 to 1.0% by weight, preferably in the range of 0.01 to 0.5% by weight, particularly preferably in the range of 0.01 to 0.1% by weight, in each case based on the total mass of the composition. 15. Method according to any of claims 12 to 14, wherein the detergent or cleaning agent composition - comprises a proportion of one or more surfactants selected from the group consisting of anionic surfactants and nonionic surfactants, wherein the or at least one of the anionic surfactants is preferably selected from the group consisting of sodium laureth sulfate, sodium lauryl sulfate and surfactants that are obtained by neutralizing fatty acids with alkanolamines and wherein the or at least one of the nonionic surfactants is preferably selected from the group consisting of lauryl/myristyl glucoside and PEG-4 rapeseed amide, I - comprises a proportion of sodium carbonate of at least 0.75% by weight, preferably a proportion of sodium carbonate in the range of 0.75% by weight to 2.0% by weight, in each case based on mass total composition.