EA027978B1 - Cleansing composition comprising a polymer of trialkyl quaternary ammonium ethyl methacrylate salt as squeakiness enhancer - Google Patents

Abstract

A cleanser composition is provided which includes a homopolymer incorporating a monomer which is a trialkyl quaternary ammonium ethyl methacrylate salt, and a non-soap synthetic detergent. Said composition exhibits a Squeakiness SQ1 value ranging from 5 to 100 grams as measured in an Acoustic Tribometer Tester.

Description

The present invention relates to cleansing compositions for skin and hair for toilet soap, shower gel, liquid hand cleanser, shampoo and related products.

State of the art

Soap is the main active substance for cleansers. Soap is a cheap and effective tool. But soap can irritate the skin. Synthetic surfactants are introduced as a substitute for soap. Some of these substances form a foam equivalent to soap foam, with their added advantage being greater softness.

Often, the sensations on the skin provided by a synthetic surfactant differ markedly from the corresponding properties of the soap. Indeed, in general, as the softness increases, the deposition of the synthetic surfactant and other moisturizing components on the skin increases. As a result, a protective barrier is formed against the removal of natural oils and fats from the epidermis.

Most consumers in Japan and many consumers in other countries do not like the oily sensation of synthetic detergents. Consumers consider deposits that moisturize the skin as a sign of insufficient cleansing. Consumers need a confirmation of cleanliness, consisting in the traditional feeling of creakiness on the skin after soap without an oily sensation.

OB 2104091 A (Kao) describes detergent compositions containing an amphoteric copolymer obtained by copolymerizing an anionic vinyl monomer containing a polymerizable unsaturated group with a cationic vinyl monomer also containing a polymerizable unsaturated group. One of the last mentioned is defined as dimethylaminoethyl methacrylate (ΌΜΆΕΜΆ), quaternized with methyl chloride.

US Pat. No. 3,547,950 (ΊοΗηδοπ & ΊοΗπδοπ) describes water-soluble acrylate-based polymers having skin adhesion properties. These polymers are prepared by interpolymerizing dimethylaminoethyl methacrylate with esters of acrylic acid and / or esters of methacrylic acid, wherein the amino group is quaternized.

SUMMARY OF THE INVENTION

A cleaning composition is provided comprising:

(ΐ) a homopolymer containing monomer units derived from quaternary ammonium trialkyl (ethyl methacrylate) salts;

(ϊϊ) a non-soap synthetic surfactant; and while the specified composition has an index of squeakiness of 801, measured using an acoustic tribometer, from 5 to 100 g

DETAILED DESCRIPTION OF THE INVENTION

It has been found that homopolymers containing monomer units from trimethylammonium ethyl methacrylate salts can give a creaking sensation to cleaning systems containing a non-soap surfactant without reducing softness.

The authors of the present invention have established the relationship of creakiness with the data obtained using an acoustic tribometer (Λοοιίδпο ТпЬоше1: е Te81eg). The specified device measures the coefficient of friction of liquid systems during flushing of a surfactant using a finger vibrating device. After the first application and washing of the sample from the skin area, the application should be characterized by a creaking index of 801 from 5 to 100, usually from 10 to 90, in particular from 23 to 80 and especially from 30 to 80 g, when measured at 34 ° C and the speed of the device 17 mm / s

The scratch improving homopolymers according to the present invention are obtained from monomer units having structure (I)

where X ^- represents an anion selected from the group consisting of chloride, bromide, hydroxyl, sulfate, phosphate, methosulfate, carboxyl, nitrate and tartrate ions. Most preferably, X ^- is a chloride ion.

The amount of homopolymer can vary from 0.01 to about 2%, preferably from 0.1 to about 1%, more preferably from about 0.3 to about 1%, and optimally from about 0.3 to

- 1,027,978 approximately 0.8% by weight of the composition.

The polymers of the present invention are homopolymers. In some embodiments, the homopolymers may be crosslinked using polyvinyl crosslinking monomers. The homopolymers can have a number average molecular weight of from 10,000 to 1 million, preferably from 10,000 to 800,000, more preferably from 15,000 to 500,000 and optimally from 20,000 to 300,000 Daltons (Yes). Most preferred is a homopolymer of structure (I) with a number average molecular weight of from about 30,000 to about 100,000 Da.

If the homopolymers crosslink, the crosslinking agents are not limited and can be selected, for example, from polyolefin unsaturated compounds commonly used for crosslinking polymers obtained by free radical polymerization.

Examples of crosslinking agents that can be noted include divinylbenzene, diallyl ether, diallyl ether of dipropylene glycol, diallyl ethers of polyglycols, divinyl ethers of triethylene glycol, diallyl ether of hydroquinone, di (meth) ethylene glycol acrylate, triethylenetriol triethyl triethyl triethyl ether, tetraethyl triethyl ether methylene bismethacrylamide, triallylamine, triallyl cyanurate, diallyl maleate, tetraallylethylenediamine, tetraallyloxyethane, trimethylolpropane diallyl ether, al yl (meth) acrylate, allylic ethers of alcohols of sugars, or other allylic or vinyl ethers of polyfunctional alcohols, and also allylic esters of phosphoric and / or vinylphosphonic acid, or mixtures thereof.

According to one embodiment of the present invention, the crosslinking agent is selected from methylenebisacrylamide, allyl methacrylate and trimethylolpropane triacrylate (TATMP). The degree of crosslinking is not limited, but in general can vary from 0.01 to 10 mol%, more specifically from 0.2 to 2 mol% with respect to the polymer.

Another component of the compositions of the present invention are synthetic foam-forming non-soap surfactants. These substances can be selected from anionic, cationic, amphoteric surfactants and combinations of these substances. Amounts may vary from 0.1 to about 30%, preferably from about 1 to about 20%, and optimally from about 3 to about 15% by weight of the composition.

Suitable amphoteric surfactants for use in the present invention include, without limitation, derivatives of aliphatic quaternary ammonium, phosphonium and sulfonium compounds in which the aliphatic radicals may be linear or branched, and in which one of the aliphatic substituents contains from about 8 to about 18 carbon atoms, and one substituent contains an anionic group, for example, carboxy, sulfonate, sulfate, phosphate or phosphonate. Examples of amphoteric surfactants are cocodimethyl carboxymethyl betaine, cocoamidopropyl betaine, cocobetaine, oleyl betaine, cetyl dimethyl carboxy methyl betaine, lauryl bis (2-hydroxyethyl) carboxymethyl bimel benzo-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-2-carboxymethyl-carboxymethyl-2-carboxymethyl-hydroxybetamide - (2-hydroxypropyl) -alphacarboxyethyl betaine, cocoamphoacetates and mixtures of these compounds. Sulphobetaines may include stearyl dimethyl sulfopropyl betaine, lauryl dimethyl sulfoethyl betaine, lauryl bis (2 hydroxyethyl) sulfopropyl betaine, and mixtures of these compounds. Cocoamidopropyl betaine is most preferred.

The anionic surfactant may be, without limitation, sulfates of C ₈ -C ₂₂ alkanes, sulfates and ether sulfonates. Suitable sulfonates are sulfonate primary C ₈ -C ₂₂ alkane, a primary disulfonate, C ₈ -C ₂₂ alkane sulfonate C ₈ -C ₂₂ alkene sulfonate C ₈ -C ₂₂ alkyl glyceryl sulfonate -gidroksialkana or ether.

Specific examples of anionic surfactants suitable for use in the present invention include ammonium lauryl sulfate, laureth sulfate, ammonium lauryl sulfate, triethylamine laureth sulfate, triethylamine lauryl sulfate, triethanolamine laureth sulfate, triethanolamine lauryl sulfate, monoethanolamine laureth sulfate, monoethanolamine lauryl sulfate, diethanolamine laureth sulfate, diethanolamine, sodium salt of the sulfated monoglyceride lauric acid, sodium lauryl sulfate, sodium laureth sulfate, potassium laureth sulfate, sodium lauryl sarcosinate, sodium lauroyl sarcosinate, potassium lauryl sulfate, sodium tridetet sulfate, sodium methyl lauroyl taurate, sodium lauroyl isethionate, sodium laureth sulfosuccinate, sodium lauroyl sulfosuccinate, sodium tridecylbenzene sulfonate, and sodium dodecyl mixtures thereof.

A particularly suitable anionic surfactant is an ammonium or alkali metal salt of laureth sulfate with an ethoxylation degree of from 0.5 to 1.5 mol, preferably from 0.8 to 1.2 mol, and optimally on average about 1 mol of ethoxylated units per hydrophobic unit compounds (i.e. lauryl sulfate).

Especially preferred as the anionic surfactant are salts of C ₈ -C ₂₂ acyl glycinates. Suitable glycinate salts include sodium cocoylglycinate, potassium cocoylglycinate, sodium lauroylglycinate, potassium lauroylglycinate, sodium myristoylglycinate, potassium myristoylglycinate, potassium palmitoylglycinate, potassium stearylaminocyl glycinate glycinate.

Cationic counterions for the formation of salts of anionic surfactants, solely for purposes of illustration, may be selected from sodium, potassium, ammonium, alkanolammonium, and mixtures of these cations.

Nonionic surfactants that can be used include the reaction products of compounds containing a hydrophobic group and a reactive hydrogen atom. Examples are alcohols, acids, amides or alkyl phenols which have reacted with alkylene oxides, in particular ethylene oxide, alone or together with propylene oxide. Specific examples of nonionic surfactants are the condensation products of ST-C'.® alkyl phenols with ethylene oxide, the condensation products of C ₈ -C] ₈ aliphatic primary or secondary linear or branched alcohols with ethylene oxide, and the products obtained by condensation of ethylene oxide with the reaction products of propylene oxide with ethylenediamine. Other nonionic surfactants include long chain tertiary amine oxides, long chain tertiary phosphine oxides and dialkyl sulfoxides. Alkyl polysaccharides are also suitable.

Such surfactants should be selected that, as a result of the use of these compositions, have a foaming test result of 8 ° Roach Tech !, ranging from 200 to 800, preferably from 300 to 700 and optimally from 400 to 600 ml. Usually, an 8ΙΤΆ Roash Tech! K-2000 from Riigé Ω игβίΐαΐ §с1еййс Сгр is used for such an assessment. The experimental protocol includes loading 10 g of product (without preliminary dilution) into a graduated cylinder. Then, 250 ml of water are added to the indicated cylinder at 40-45 ° C. After mixing the sample for 30 s at a speed of 1000 rpm, the volume of the foam is recorded using a rotor. The final foam volume is obtained as the average of ten repetitions of the measurement of the foam volume after mixing the sample for 30 s at a speed of 1000 rpm.

Also, C8-C22 fatty acids may optionally be included in the compositions of the present invention. Suitable fatty acids are lauric acid, myristic acid, palmitic, stearic, oleic, linoleic, behenic and combinations of these acids. Particularly suitable are C ₁₂ -C ₁₄ fatty acids such as lauric acid and myristic acid. The amounts of fatty acids, if present, can vary from 0.1 to 15%, preferably from 0.5 to 10% and optimally from 1 to 5% by weight of the composition.

Also suitable components of the composition according to the present invention may be C ₈ C22 fatty alcohols. Suitable fatty alcohols are lauryl alcohol, myristyl alcohol, cetearyl alcohol, stearyl alcohol, oleyl alcohol, linoleyl alcohol, behenyl alcohol, and mixtures of these alcohols. The amounts of fatty alcohols, if present, can vary from 0.1 to 15%, preferably from 0.5 to 10% and optimally from 1 to 5% by weight of the composition.

Water may be present in the compositions in amounts of from 5 to 95%, preferably from 50 to 90%, and optimally from 65 to 85% by weight.

Water soluble / dispersible polymers are an optional ingredient that can be included in the compositions of the present invention. These polymers can be of the cationic, anionic, amphoteric or nonionic type. It is known that these polymers increase the viscosity and stability of liquid cleansing compositions, improve the tactile sensations on the skin during and after use, and improve the creaminess of the foam and the stability of the foam. The amount of polymers, if present, can vary from 0.1 to 10% by weight of the composition.

Examples of water-soluble or dispersible polymers include carbohydrate gums, such as cellulose gum, microcrystalline cellulose, cellulose gel, hydroxyethyl cellulose, hydroxypropyl cellulose, carboxymethyl cellulose sodium, methyl cellulose, ethyl cellulose, guar gum, gum gum, gum gum, karagari gum, gum gum, gum gum, gum, xanthan gum and mixtures of these substances; granules of modified and unmodified starch and pregelatinized starch soluble in cold water; emulsion polymers such as Ac1up® 28, Ac1up® 22, or Cactorop® Adia 8P1; a cationic polymer, such as modified polysaccharides, including cationic guar, available from Knox under the trade names 1diag C13§, 1diag C14§, 1diag C17 or 1diag C16; cationic modified cellulose, such as ISAKE Ro1uteg Zh 30 or Zh 40 from Ategs1yu1; Ν-Napse® 3000, Ν-Napse® 3196, Ν-Napse® CPX 215 or Нап-Napse® CPX 196 from Negsiek; a synthetic cationic polymer such as Megdia! ® 100, Megdia! ® 280, Megdia! ® 281 and Megdia! ® 550, sold No. 1CO; cationic starches, such as §! abok® 100, 200, 300 and 400, sold by 8! a1eu 1ps .; cationic galactomannans, such as Ca1ac1aco1® 800 type from Nepke1, 1 ps .; Onaygoko® LM-200; and Polyquaternium-24. High molecular weight polyethylene glycols such as Po1uoh® ^ 8K-205 (PEG 14M), Po1uoh® ^ 8Κ-Ν-60Κ (PEG 45) and Po1uoh® ^ 8K301 (PEG 90M) are also suitable.

Optionally, water soluble skin benefit agents may be included in the compositions. You can use various water-soluble agents that are beneficial to the skin, while their content

- 3 027978 may be from 0.1 to 50%, but preferably from 1 to 30% by weight of the composition. These materials include, but are not limited to polyhydric alcohols. Preferred water soluble skin benefit agents are glycerin, sorbitol, and polyethylene glycol.

Also, water-insoluble skin-friendly agents, such as conditioning and moisturizing components, may be included in the compositions. Examples include silicone oils; hydrocarbons such as liquid paraffins, petroleum jelly, microcrystalline wax and mineral oil; and plant triglycerides, such as sunflower and cottonseed oils.

If necessary, preservatives can be added to the composition to prevent the growth of potentially harmful microorganisms. Suitable traditional preservatives for the compositions are parahydroxybenzoic acid alkyl esters. Other preservatives that later came into use include hydantoin derivatives, propionate salts, and a number of quaternary ammonium compounds. Particularly preferred preservatives are phenoxyethanol, methyl paraben, propyl paraben, imidazolidinyl urea, sodium dehydroacetate and benzyl alcohol. Preservatives should be selected, taking into account the use of the composition and possible incompatibility between preservatives and other ingredients. Preservatives are preferably used in amounts of from 0.01 to 2% by weight of the composition.

A number of other optional materials may be included in the compositions. These materials may include: antimicrobial agents such as 2-hydroxy-4,2 ', 4'-trichlorodiphenyl ether (triclosan), 2,6-dimethyl-4-hydroxychlorobenzene and 3,4,4'-trichlorocarbanilide; scrub and exfoliating particles, such as polyethylene and silica or alumina; cooling agents such as menthol; skin calming agents such as aloe vera; and dyes.

In addition, the compositions of the present invention may further include from 0.5 to 10% by weight of complexing agents, such as tetrasodium ethylenediaminetetraacetate (EDTA), EGDF, or mixtures of these compounds; opacifiers and pearlescent agents, such as ethylene glycol distearate, titanium dioxide or Li1goi 621 (styrene / acrylate copolymer); All of these materials are suitable for improving the appearance or properties of the product.

The term comprising does not imply a limitation to any of the elements listed below, but rather encompasses not specified elements of greater or lesser functional importance. In other words, the listed stages, elements or options should not be exhaustive. If the words including or having are used, these terms are considered equivalent to the term containing above.

With the exception of working and comparative examples, or unless expressly stated otherwise, all numbers in the present description indicating the amount of material should be understood as modified by the word approximately.

It should be noted that when determining any range of concentration or quantity, any particular upper concentration may be associated with any particular lower concentration or quantity.

The following examples more fully illustrate embodiments of the present invention. All proportions, percentages and ratios indicated in the present description and in the attached claims are indicated by weight, unless otherwise indicated.

Examples

Evaluation of creakiness was carried out using an instrument - an acoustic tribometer (Aoicis Trnochen Teklg), shown in the figure.

The use of an acoustic tribometer.

The figure is a close-up view of the main components of an acoustic tribometer. These components include a stage (2), load sensors (4, 6), a finger vibrating device (8), an accelerometer (10), a support table (12), a guide (14), a photo sensor (16), a hydrophone (18), and (not shown) motor and stops at the end of the guide. The engine was driven by a rotary stage using a temporary belt (not shown) capable of damping vibrations from the rotation of the motor. The stage, immersed in water, was connected to the support stage by means of two load sensors (Nopeu№е11 AE311AK, range 1000 d), capable of sensing vertical loads from direct current to a frequency of 300 Hz. Near the stage, a hydrophone (B & K 1803 hydrophone) was used to record the sound under water generated by a fixed sample substrate and a moving artificial finger. An accelerometer (RSV 352A24) was installed in the artificial finger directly above the water to record the vibration of the artificial finger. The solenoid coil attached to the artificial finger made it possible to apply a load to the finger during friction of the substrate and the possibility of lifting during reverse movement due to a change in the sign of the voltage applied to the coil. The axis of rotation in the artificial finger provided freedom of response to intermittent movement that occurred when sliding on the test surface. The limit of lifting force limited the length of the artificial finger, and, therefore, limited the depth of immersion in the water of the stage. To avoid any negative effects of surfactants in water when washing them off

- 4,027,978 substrates, a large reservoir of water (50-53 L) was used. To facilitate data processing, a photosensor with a guide was used to create a transmitting signal, with the transition from low to high related to the position of the contact with the right support of the stage, and the transition from high to low related to the position of the contact with the left support. The electromagnetic relay system (ϋ8Β-ΕΚΒ24, Meazigeshep! Soshriypd, 1ps) was controlled by a computer to switch between applying a load to the finger (during sliding) or lifting the finger (during reverse movement). Further details regarding many components of the instrument can be found in EP1684631B1, the contents of which are incorporated herein by reference.

The protocol of the experiment.

After installing a set of substrates, the substrate and the stages were immersed in water to soak. Before applying a sample of the test composition to the substrate, ten rubbing movements were performed to establish a baseline for the untreated substrate. After that, the stage was removed from the water, lowering the water bath, and 0.25 g of the test composition was applied to the substrate (for example, synthetic skin). Then again put the object table in the water, raising the tank with water. Then, samples of the studied compositions were washed 40 times from the surface using an artificial finger. The latter had a surface of the same substrate as the stage.

Water hardness and temperature.

The washability of the samples of the studied compositions may depend on the hardness of the water. To simulate various water conditions, calcium chloride and magnesium chloride were used to control the properties of the test water. The ratio of calcium to magnesium ranged from 3: 1 to 4: 1. The temperature of the water was regulated by mixing hot and cold water. The total amount of water in the test tank was about 14 gallons (about 53 L).

Turning speed.

The rotation speed of the artificial finger could be fixed from 10 to 100 mm / s, but for the purposes of the present invention, a speed of 17 mm / s was maintained.

Coefficient of friction.

A set of two normal force sensors constituted a system capable of measuring normal force and friction coefficient. When the system entered the creaking area (intermittent movement), the signal from the force sensor (4) and the force sensor (6) oscillated, since the intermittent movement created normal forces. Two force sensors had the same oscillation phase, and the sum of the two indicated signals provided the amplitude of the result of intermittent motion.

The creakiness parameter 801 was obtained from the average deviation of normal forces for 40 rubbing movements upon first application. Normal force was the force applied to the artificial finger, minus the friction loss. 801 was the average of all 40 rubbing movements when flushing with a turning speed of 17 mm / s. The specified parameter is a good indicator of squeakiness.

Samples.

The polymers evaluated in the cleaning compositions were prepared as follows, and the structures of the reagents / catalyst / polymer are shown below.

Statistical free radical polymerization was carried out using the CEEZZREEB 8 \ ut automated system according to the following general procedure.

For low molecular weight polymers - ~ 20-50 K.

Quaternized dimethylaminoethyl methacrylate (ΌΜΑΕΜΑ) (40 ml of a 25% aqueous solution) was added to a solution of 4,4'-azo-bis- (4-cyanovalerianic acid) (ACAA) (200 mg) in water (5 ml) and isopropyl alcohol (IPA) (5 ml) for polymerization with a solids content of 20%. The reaction mixture was heated and stirred at 75 ° C for 4 hours. The isopropyl alcohol was evaporated and the remaining monomer was separated by ultrafiltration. Poly (OMEMA qu.) Was isolated by freeze drying as a white solid (9.0 g).

For high molecular weight polymers - ~ 100-200 K.

ΌΜΑΕΜΑ quat. (40 ml of a 25% aqueous solution) was added to a solution of 4,4'-azo-bis- (4-cyanovaleric acid) (ACAA) (100 mg) in water (10 ml) to carry out the polymerization at a solids content of 20%. The reaction mixture was heated and stirred at 75 ° C for 4 hours. The polymer was purified by ultrafiltration. Poly (OMEMA qu.) Was isolated by freeze drying in

- 5,027,978 as a white solid (9.0 g).

Molecular weight was measured by GPC with triple detection of U18co1ec ORPCsc 2001. Chemical characterization was performed using a 400 MHz Wgickeg Luisise NMR with automated jet sampling. The proton NMR spectrum (Ό ₂ Ο) after purification did not show residual olefin monomer signals, but showed polymer signals at 4.5 ppm. C (O) OCH ₂ CH ₂ ; 3.82 ppm C (O) OCH ₂ CH ₂ ; 3.25№ (Me) ₃ ; 0.9-2.2 ppm backbone of the polymer.

A number of test compositions were prepared. The compositions of these studied compositions and their creakiness indices ^ 1 are given in table. I, II.

Table I

Component Sample No. (% wt.) BUT IN FROM ϋ E G ABOUT N I Carbopol Acia 8R1 (30% in water) 1,5 1,5 1,5 1,5 1,5 1,5 1,5 1,5 1,5 Poly (trimethylammonium ethyl methacrylate chloride) ² 0 0.5 ^one 0 0.5 one 0 0.5 ^one Glyceride 2 2 2 2 2 2 2 2 2 Lauric acid one one one one one one one one one Cocamidopropyl Betaine 0 0 0 9.8 9.8 9.8 0 0 0 Sodium Laureth Sulfate ³ 9.8 9.8 9.8 0 0 0 0 0 0 Cocoylglycinate Sodium 0 0 0 0 0 0 9.8 9.8 9.8 Sodium hydroxide 0.25 0.25 0.25 0.35 0.35 0.35 0.06 0.06 0.06 O1u0ap1 P1iz® liquid 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 0.20 Chelating agent 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 0,03 Water up to 100 up to 100 up to 100 up to 100 up to 100 up to 100 up to 100 up to 100 up to 100 The indicator of "creakiness" 8TS1 ¹ 1.7 69.0 69.5 21.6 23.1 31,2 44.5 54.6 36.5

¹ Squeakiness tests were carried out at 17 mm / s, 34 ° C.

² Molecular mass of approximately 50,000 Da.

³ Moles of ethoxylated units — on average, approximately 1 mol.

Table II

Component Sample No. (% wt.) Sample No. (% wt.) ί TO B M N ABOUT Carbopol Acia 8R1 (30% in water) 1,5 1,5 1,5 1,5 1,5 1,5 Poly (trimethylammonium ethyl methacrylate chloride) ² 0.5 one 0.5 one 0.5 ^one Glyceride 2 2 2 2 2 2 Lauric acid one one one one one ^one Cocamidopropyl Betaine 0 0 9.8 9.8 0 0 Sodium Laureth Sulfate ³ 9.8 9.8 0 0 0 0 Cocoylglycinate Sodium 0 0 0 0 9.8 9.8 Sodium hydroxide 0.25 0.25 0.35 0.35 0.06 0.06 C1u0ap1 P1sh® liquid 0.20 0.20 0.20 0.20 0.20 0.20 Chelating agent 0,03 0,03 0,03 0,03 0,03 0,03 Water up to 100 up to 100 up to 100 up to 100 up to 100 up to 100 The indicator of "creakiness" 8TS1 ¹ (in grams) 55.6 66,2 14.1 • 1.7 55.8 59.5

¹ Squeakiness tests were carried out at 17 mm / s, 34 ° C.

² Molecular mass of approximately 200,000 Da.

³ Moles of ethoxylated units — on average, approximately 1 mol.

A homopolymer of poly (trimethylammonium ethyl methacrylate chloride) improved the creakiness of compositions containing cocoamidopropyl betaine, sodium laureth sulfate or sodium cocoyl glycinate as a surfactant. The best characteristics have been shown for sodium laureth sulfate as a surfactant. For the latter, the improvement in squeakiness varied from about 54 to 68 g compared to a control sample without homopolymer. For example, we compare control sample A with samples B, C, I, and K. A homopolymer with cocoamidopropyl betaine or sodium cocoyl glycinate was suitable but less effective.

The above description is presented to enable a person skilled in the art to implement and apply the present invention, and is provided in the context of a specific application and its requirements. Various modifications of preferred embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other embodiments and applications without departing from the scope and spirit of the present invention. Thus, the present invention should not be limited by the shown embodiments, but should receive the broadest scope consistent with the principles and features described in the present invention.

Claims (9)

CLAIM 1. A cleansing composition containing: (ι) from 0.01 to 2 wt.% a homopolymer containing monomer units derived from quaternary ammonium trialkyl (ethyl methacrylate) salts; (ΐϊ) from 3 to 15 wt.% non-soap synthetic surfactant, which is (a) sulfates of C ₈ -C ₂₂ alkanes, sulfates and sulfonates of ethers and (b) salts of C ₈ -C ₂₂ - acyl glycinates; (ίίί) from 0.1 to 50% by weight of a water-soluble skin benefit agent; and (ίν) from 50 to 90 wt.% water; the composition is characterized by a creakiness index of 5 (91 from 36.5 to 100 g, measured using an acoustic tribometer at a temperature of 34 ° C and a device speed of 17 mm / s. 2. The composition according to claim 1, characterized in that the homopolymer has a number average molecular weight of from 10,000 to 800,000 Da. 3. The composition according to claim 1, characterized in that the homopolymer has a number average molecular weight of from 20,000 to 300,000 Da. 4. The composition according to claim 1, characterized in that the homopolymer has a number average molecular weight of from 30,000 to 100,000 Da. 5. The composition according to claim 1, characterized in that the monomer units have the structure (I) where X is an anion selected from the group consisting of chloride, bromide, hydroxyl, sulfate, phosphate, methosulfate, carboxyl, citrate and tartrate ions. 6. The composition according to claim 1, characterized in that the homopolymer is crosslinked using a polyolefin unsaturated compound. 7. The composition according to claim 1, characterized in that the non-soap surfactant is sodium laureth sulfate. 8. The composition according to claim 7, characterized in that the sodium laureth sulfate contains an average of 1 mol of ethoxylated units. 9. The composition according to claim 1, characterized in that the homopolymer is present in an amount of from 0.3 to 1 wt.%.