WO2013078783A1

WO2013078783A1 - Mild soap base facial cleanser composition and production process therefor

Info

Publication number: WO2013078783A1
Application number: PCT/CN2012/070373
Authority: WO
Inventors: 韦异; 倪琼琼; 王韶华
Original assignee: 南京华狮化工有限公司
Priority date: 2011-11-30
Filing date: 2012-01-16
Publication date: 2013-06-06
Also published as: CN103126911A; CN103126911B

Abstract

Disclosed are a mild soap base facial cleanser composition and a production process therefore. The composition comprises: a soap base accounting for 2.0% to 50.0% of the composition by weight; an anion surfactant accounting for 2.0% to 30.0% of the composition by weight; a rheology modifier accounting for 0.5% to 20.0% of the composition by weight, and remaining water. The production process of the composition of the present invention comprises: first, diluting a fatty acid with another compatible component in the formulation, and dispersing the fatty acid by stirring to form fatty acid drips; next, adding a base solution, so that the base solution contacts with the fatty acid drips, to form fine soap particles; and finally, adding components to be added at a low temperature, mixing evenly, and then discharging the product. The mild soap base facial cleanser composition of the present invention is mild and moistening, does not make the skin feel dry and tight after washing, and has good low-temperature and high-temperature stability. The production process is simple and easy to operate, has good reproducibility, and can avoid frequent quality problems in the production of soap base facial cleanser.

Description

Instruction manual

Mild soap-based cleansing cream composition and process thereof

Technical field

The invention belongs to the field of household chemicals, and relates to a mild soap-based cleansing cream composition and a production process thereof. Background technique

The main body constituting the foam type cleansing product is a surfactant which acts as a cleaning agent, and the type of the surfactant is different, and the appearance and performance of the obtained cleansing product are also different, and each has its own advantages and disadvantages, as shown in Table 1.

Market common bubble ^ cleansing product appearance and its performance

Soap-based cleansing creams are popular in a wide range of foam-based cleansing products, and their market share can even account for nearly 50% of the market for foam-based cleansing products.

The traditional soap-based cleansing cream is a product with outstanding advantages and disadvantages. Its main advantages are: 1 paste, installed in The hose can be extruded into strips; 2 can provide a very beautiful pearlescent appearance; 3 Spreadability is good, the strip of l-2cm is put on the hand, the shop is unfolded, it is not sticky, it is very convenient to use; Soaked quickly, the foam is rich and delicate; 5 easy to rinse, rinse with water, clean and fresh after washing. The main disadvantages are as follows: (1) The skin is dry and tight after use; 2 The stability of high and low temperature is not good, the high temperature is easy to be separated, and the low temperature is easy to harden; 3 The production process is poorly reproducible, and the production process is prone to quality problems.

In order to achieve high viscosity and hardness, the amount of fatty acids in conventional soap-based cleansing creams is relatively high, usually between 28% and 35%. Formulations are usually designed to achieve different foam sensations, pearlescent appearance, hardness and cleansing power by selecting the type and ratio of fatty acids and the degree of saponification. Due to its high fatty acid content and high soap content, it has a strong degreasing power to the skin, resulting in very dry and tight skin after washing.

The "ideal cleansing cream" system that consumers expect combines the advantages of soap-based systems, surface-active systems and cream systems. The ideal cream should have the same appearance as the soap-based system, rich foam, and good spreadability. It is easy to rinse, and has the same feeling of use after drying, not drying, and tension, like the active system or the cream system.

Summarizing the currently disclosed soap-based cleansing cream formulation technology, in the formulation containing 28%-35% fatty acid soap, the main measures to improve the dryness after washing are: 1 addition (additional amount is usually <3.0%) - some mild Surfactants, such as betaines, imidazolines, N-fatty acyl amino acid salts, monoalkyl phosphates (MAP), alkyl glycoside (APG), etc., these mild surfactants can weaken the soap base. In addition to the degreasing power, it can also increase the mildness, improve the foam properties of the system, and make the formula more rich, delicate and elastic foam, and help the high and low temperature stability; 2 add some oils such as mineral oil, vegetable oil and Derivatives, or esterifying agents, reduce the dryness by the oil remaining on the skin. The above measures have indeed played a role in reducing the degreasing power of the soap base and improving the tightness of the dryness after washing, but there is still a great distance from the "ideal cleansing cream" expected by consumers.

Soap-based cleansing cream has high viscosity and can be easily extruded from a hose at room temperature and erected in strips. Therefore, it is required that the cleansing cream has very good rheological properties, that is, high temperature (48 ° C) is not dilute. Low temperature (5 ° C) does not change hard, high temperature (48 ° C) placed or low temperature (5 ° C) placed after returning to room temperature, the cleansing cream can be restored to the original room temperature, no hard, no soap particles. However, the preparation of a soap-based cleansing cream is not a simple raw material mixing process, involving chemical reactions between fatty acids and alkalis, and in order to balance the skin feel after washing, product hardness, etc., the neutralization degree of the fatty acid is usually not 100%, but Controlled at 80%-90%, in addition to fatty acid soap, some free fatty acids are present in the system, belonging to the surface activity (fatty acid soap and other added surfactants) and oils (free fatty acids and other added fats) The coexisting system is not easy to stabilize; 2 fatty acid soap has polymorphism, and its crystal structure mainly exists in c β, δ, ω, etc., and the three crystal forms of β, δ and ω are stable crystal forms. The performance exhibited by the crystal forms is different (see Table 2). These three crystal forms will be phase-shifted with the external temperature, water content or applied mechanical force. The order of increase is usually δ<β<ω, BP. For example, when the temperature of the soap base increases, it is easy to Spontaneously changes from one crystal form to another, but when the soap base cools, the change in the opposite direction is more difficult to occur. Soap-based cleansing cream is a beautiful pearly evenly delicate paste at room temperature, but it is easy to stratify and thin when placed at high temperature. The system is uneven after returning to room temperature. The upper layer is white lumps and the lower layer is translucent liquid. Then it hardens, the soap particles are precipitated, and the system is returned to the room temperature system, and the state cannot be restored to room temperature. In view of the characteristics of the soap base, how to obtain a soap-based cleansing cream formulation with good high and low temperature stability has also been the research focus when developing such products.

Table 2 three kinds of crystal form female

As is known to all, the production process of soap-based cleansing cream is poorly reproducible, the production process is prone to quality problems, and the production time is long and the energy consumption is high, which is a very headache for the manufacturer. The usual production process for soap-based cleansing creams is:

The first step: preparation of the soap base First, the lye is added to the molten fatty acid solution, and the saponification reaction is carried out, and the mixture is kept warm for a certain period of time until the soap block is uniformly dispersed;

The second step: adding other high-temperature additives, after the soap block is completely dispersed, sequentially adding other substances that need to be added at a high temperature, stirring and mixing uniformly;

Step 3: Add other low-temperature additives to a temperature of 45 °C, add other substances that need to be added at low temperature, stir evenly and discharge.

The saponification reaction is an exothermic reaction and can be completed instantaneously. Therefore, when the first step of the soap base is prepared, when the alkali solution is in contact with a high concentration of the fatty acid solution (ie, the oil phase), it is very easy to form a large soap bar, in this step. It is necessary to keep warm for a certain period of time, and the formed soap pieces are completely dispersed evenly before entering the second step. It is not easy to disperse the formed soap bar, and the size of the bar is directly related to the speed at which the lye is added, the stirring efficiency of the reactor, and the like. Therefore, in actual production, if the speed of the addition of the lye and the stirring efficiency of the reactor cannot be accurately controlled, it is easy to cause the size of the soap formed between the batch and the batch to be different, under the same incubation time. Some batches of soap have been dispersed, some batches of soap have not been dispersed, or, in order to disperse the soap, the mixing time between batch and batch is inconsistent, these factors will ultimately affect the formation of soap base. The crystal form thus affects the stability of the soap base. The product quality problems caused by the poor reproducibility of the soap-based cleansing cream production process are mainly reflected in the three aspects of pearlescence, foam and high and low temperature stability. The performance of the three aspects is somewhat good and not good. Can't maintain consistency. The formula is the same, the production process is the same, the quality problem can not be found, and it has always been the biggest problem for the research and development of soap-based cleansing cream. Summary of the invention

SUMMARY OF THE INVENTION The object of the present invention is to provide a mild soap-based cleansing cream composition in view of the above-mentioned deficiencies of the prior art.

Another object of the invention is to provide a process for the production of the composition.

The object of the present invention can be achieved by the following technical solutions:

A mild soap-based cleansing cream composition comprising: (A) from 0% to 50.0% by weight based on the total weight of the soap-based cleansing cream composition; (B) based on the total weight of the soap-based cleansing cream composition 2.0% to 30.0% of an anionic surfactant, (C) a rheology modifier of from 0.1% to 10.0% by weight based on the total weight of the soap-based cleansing cream composition; and (D) a balance of water, said mild soap The base cleansing cream composition has a pH of 8.0-11.0.

The additional optional components also include one or more of flavors, preservatives, pigments, heat sensitizers, cooling sensitizers, bactericides, vitamins and derivatives thereof, anti-allergic agents, and ultraviolet absorbing agents.

The soap-based cleansing cream composition of the present invention provides mild moisturizing and non-drying and non-tightening properties after washing and has good high and low temperature stability. Such properties are provided by the composition rather than one of the components of the composition. Such compositions include, consist of, or consist essentially of, the essential components, the contents defined in the present invention, and any additional or optional components or defined features.

In particular, such compositions comprise a soap base, an anionic surfactant, a rheology modifier, and water, which are lower than the soap base content of a conventional soap-based cleansing cream and have a milder surface activity than conventional soap-based cleansing creams. The content of the agent, and the lattice structure formed by the rheology modifier, the lattice structure formed by the anionic surfactant and the amphoteric surfactant, and the micelle action, thereby obtaining a good skin feel and high and low temperature stability. Sex is very important.

The essential components of the soap-based cleansing cream compositions of the present invention, as well as additional or optional components, methods of use, and manufacturing processes are all described in detail below.

1 basic component

The essential components of the mild soap-based cleansing cream composition of the present invention include soap bases, anionic surfactants, rheology modifiers, and aqueous carriers, each of which is described in detail below.

A soap base

The mild soap-based cleansing cream compositions of the present invention comprise from 2.0% to 50.0% by weight of the composition of a soap-based component suitable for application to the skin. The soap-based component comprises from 2.0% to 40.0% by weight of the composition of fatty acids suitable for application to the skin. The composition of the base is from 0.0% to 10.0% by weight of the composition. The amount of the base is determined by the degree of neutralization of the fatty acid. This section therefore focuses on a detailed description of fatty acids, bases and neutralization.

A1 fatty acid

The mild soap-based cleansing cream composition of the present invention comprises from 2.0% to 40.0%, preferably from 8.0% to 35.0%, further preferably from 10.0% to 28.0%, particularly preferably from 12.0% to 18.0% by weight of the composition, suitable for use in the application. Fatty acids on the skin. The fatty acid is a composition of a fatty acid composition which imparts the desired foam, viscosity, appearance, cleansing power and skin feel to the mild soap-based cleansing cream composition of the present invention, and most importantly, it is particularly preferred. The fatty acid content of the composition from 12.0% to 18.0% is much lower than that of the conventional soap-based cleansing cream (28.0% - 35.0%), which reduces the degreasing power of the soap-based cleansing cream while ensuring good cleaning power. It is believed to be beneficial to reduce the feeling of dry and tightness after washing the soap-based cleansing cream.

Suitable for mild soap cleanser composition of the present invention Examples of fatty acids include but are not limited to: caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, C ₁₆ acid, C ₁₈ acid, or two Kind or a mixture of two or more.

The application properties of different fatty acids are mainly in terms of irritation, cleansing power, degreasing power, foam properties (including foam size, uniformity, elasticity, foam stability, etc.), formulation viscosity, appearance, and skin feel after washing. Differences. The foam produced by fatty acids becomes smaller and smaller as the molecular weight of fatty acids increases, and the foam becomes more and more stable, but the foam is more and more difficult to produce, and the irritancy also decreases with the increase of the molecular weight of the fatty acid. For example, lauric acid produces the largest foam, the most easily disappeared, and the irritating effect. The foam produced by C ₁₈ acid is small and long-lasting, and at the same time mild. The most important influence on the pearlescent effect of the final product is myristic acid and C ₁₈ acid. The pearlescent light produced by myristic acid is a slightly transparent, milky white pearl similar to the ceramic surface glaze, while the pearlescent light produced by C ₁₈ acid is a A strong white glittering pearl. High molecular weight fatty acids provide a higher viscosity to the formulation.

Preferably, the fatty acid used in the mild soap-based cleansing cream composition of the present invention is at least one of lauric acid, myristic acid, palmitic acid, stearic acid, C ₁₆ acid, and C ₁₈ acid, preferably lauric acid, nutmeg. A mixture of acids and stearic acid. The preferred weight ratio of the fatty acid mixture is lauric acid: myristic acid: stearic acid = 0 to 1: 1-3: 1 to 6, more preferably 0.5 to 1: 1-2.5: 2-5, most preferably 1: 1~2: 2~4. The purity of the lauric acid is preferably from 80% to 100%, further preferably from 90% to 100%, most preferably from 95% to 100%. The purity of the myristic acid is preferably from 80% to 100%, more preferably from 90% to 100%, most preferably from 95% to 100%. The stearic acid may be a commercially available product, such as the trade name Edemor ST05M (purchased from Corning Chemical), usually a combination of C ₁₆ acid and C ₁₈ acid, preferably C ₁₆ acid: C ₁₈ acid is 10-80: 90-20, more preferably 40-80: 60-20, the highest priority is 60-80: 40-20

A2 base

The mild soap-based cleansing cream composition of the present invention, wherein the soap-based component is obtained by reacting a fatty acid with a base, and conforms to the following reaction formula (I):

o o

II Neutralization reaction II

R— C— OH + MOH —— R— C ~ OM + H ₂ 0

Among them, MOH is an alkali.

Different bases have an effect on the hardness, foam, appearance and skin feel of the soap base. Specific examples of preferred bases include, but are not limited to, KOH, NaOH, NH ₄ OH, triethanolamine (TEA), or mixtures thereof, more preferably KOH, triethanolamine, or mixtures thereof, and particularly preferred is KOH.

The amount of the base, in addition to the degree of neutralization, is also related to the purity of the base. The purity of the base is preferably > 85%, more preferably > 90%, and most preferably > 95%. Alkali is very easy to absorb moisture. In particular, it is desirable to determine the purity of the base for each use.

A3 neutralization

The mild soap-based cleansing cream composition of the present invention, wherein the soap-based component is obtained by reacting a fatty acid with a base. The amount of the base is determined by the preferred degree of neutralization. The degree of neutralization satisfies the following formula (11). Neutralization specifies the number of fatty acids involved in the saponification reaction

^ ^ Amount of base X purity of alkali

Zhonghekou ―

Fatty acid dosage X fatty acid acid value

When the degree of neutralization is 100%, all fatty acids participate in the saponification reaction, and the soap-based system consists of the only component, the fatty acid soap, which is an anionic surfactant. When the degree of neutralization is less than 100%, some of the fatty acids fail to participate in the saponification reaction, and the soap base is composed of a fatty acid soap (which is an anionic surfactant) and a free fatty acid (which belongs to a fat) which does not participate in the saponification reaction. Free fatty acid has an effect on the foam, skin feel, system stability, production process, etc. of the soap-based cleansing cream. The presence of a suitable free fatty acid is necessary in view of irritation and degreasing power.

The degree of neutralization of the fatty acid in the mild soap-based cleansing cream composition suitable for the present invention is preferably in the range of 50% to 100%, taking into consideration factors such as system stability, viscosity, appearance, skin feel, irritation, degreasing power and the like. It is preferably from 70% to 90%, and finally preferably from 80 to 90.

In particular, the _P H value is another key indicator of the soap base component and is directly related to the amount of base used and the degree of neutralization. It is the main criterion for quality control in the production of soap-based cleansing cream. The pH of the mild soap-based cleansing cream composition suitable for the present invention is preferably from 8.0 to 11.0, more preferably from 9.0 to 11.0, particularly preferably from 9.5 to 10.5.

B anionic surfactant

The mild soap-based cleansing cream composition of the present invention comprises from 1.0% to 15.0%, preferably from 4.0% to 12.0% by weight of the composition. More preferably, 5.0% to 10.0% of an anionic surfactant suitable for application to the skin. The anionic surfactant can impart rich foaming properties, low degreasing power and mildness to the mild soap-based cleansing cream composition of the present invention, and provides a non-drying and non-compacting after-washing feeling according to the present invention. Has a very important role. It is believed that the amount of use has an impact on the above effects. Such anionic surfactants should be used within the pH range used in the soap-based compositions of the present invention and are compatible in physical and chemical properties with the soap-based components of the compositions within this pH range.

Examples of the anionic surfactants suitable for use in the mild soap-based facial cleansing cream compositions of the present invention include, but are not limited to, lauryl polyoxyethylene ether sulfate, lauryl polyoxyethylene ether sulfate, sodium lauryl sulfate, laurel One or more of potassium alkoxide sulfate, fatty acid monoglyceride sulfate, fatty alcohol sulfosuccinate, potassium monoalkyl phosphate, sodium monoalkyl phosphate, and N-fatty acid amino acid salt. Preferred are fatty acyl amino acid salts.

The N-fatty acylamino acid salt, which is a derivative of an amino acid, is acylated with a fatty acid chloride. Non-limiting examples of such amino acids include: sarcosine, glycine, glutamic acid, taurine, alanine, threonine, preferably sarcosine, glycine and glutamic acid.

A preferred N-fatty acid glycine derivative having a structure conforming to the following formula (III)

〇〇

II II

RC-NH-CH ₂ -C-0"M ⁺

(III)

A preferred N-fatty acyl sarcosine derivative having a structure conforming to the following formula (IV)

〇〇

II I I

RCN— CH ₂ -C-0"M ⁺

CH ₃

(IV)

A preferred N-fatty glutamic acid derivative having a structure conforming to the following formula (V)

〇〇

II I I

RC-NH-CH-C-0"M ⁺

CH ₂ CH ₂ C〇〇H

(V)

Wherein, RCO is a fatty acid residue, and the applicable fatty acid may be selected from natural sources such as coconut oil, palm oil, safflower oil, olive oil, or a synthetic source, and the suitable carbon chain is a C ₈ -C ₂₂ fatty acid, preferably The C ₈ -C ₁₈ fatty acid may have a carbon chain composition of a single carbon chain or a mixed carbon chain. It is known from other published patents that carbon chains have an effect on the foam properties and viscosity of soap-based facial cleansers. M ⁺ is hydrogen (acid form) or cationic (salt form) such as K ⁺ , Na+, NH ₄ ⁺ , TEA ⁺ .

Non-limiting examples of N-fatty acid amino acid salts include: sodium lauroyl sarcosinate, potassium lauroyl sarcosinate, triethanolamine lauroyl sarcosine, sodium cocoyl glycinate, potassium cocoyl glycinate, cocoyl Glycine triethanolamine, sodium cocoyl glutamate, potassium cocoyl glutamate, cocoyl glutamic acid triethanolamine, sodium myristoyl sarcosinate, myristoyl glutamic acid triethanolamine, or a mixture thereof, Preferred is sodium lauroyl sarcosinate, sodium cocoyl glycinate, potassium cocoyl glycinate, sodium cocoyl glutamate, potassium cocoyl glutamate, more preferably sodium cocoyl glycinate, potassium cocoyl glycinate, Finally, potassium cocoyl glycinate is preferred. Potassyl cocoyl glycinate has a more similar structure to fatty acid soaps.

C rheology regulator

The mild soap-based cleansing cream compositions of the present invention further comprise from 0.1% to 10.0%, preferably from 0.5% to 8.0%, more preferably from 1.0% to 5.0% by weight of the composition of a rheology modifier suitable for use on the skin. The rheology modifier can form a lattice structure with good levitation force and good thixotropy in the soap-based cleansing paste, and has a very important effect on providing the good high and low temperature stability described in the present invention, The viscosity of the formulation, as well as the improved feel after washing, also provide very important help. Such rheology modifiers should be used within the pH range used in the soap-based compositions of the present invention and are physically and chemically compatible with the other essential components of the composition within the pH range.

The rheology modifiers described in the mild soap-based cleansing cream compositions suitable for use in the present invention should be those which are chemically and physically compatible with the other essential components of the composition, which may form intermolecular hydrogen. a bond or a group of intramolecular hydrogen bonds, such as -OH, -COO, -CONH, -NH _{2 ,} etc., which can rapidly combine with water molecules to swell and have a long molecular chain. In the swollen state, the molecular chain is In the form of a network, the aqueous solution is a pseudoplastic fluid and exhibits good thixotropic properties. Non-limiting examples of rheology modifiers suitable for use in the present invention include: organic natural water soluble polymers, organic semisynthetic water soluble polymers, organic synthetic water soluble polymers, inorganic water soluble polymers, and two or more of the above a mixture of polymers. Details are as follows:

C1 organic natural water soluble polymer

Examples of the organic natural water-soluble polymer include, but are not limited to, xanthan gum, gum arabic, carrageenan, tragacanth, guar gum, alginic acid and salts thereof, chitin, or a mixture thereof. Preferably, xanthan gum, gum arabic, guar gum, and more preferably xanthan gum. The polymer of the present invention comprises from 0.0% to 3.0%, preferably from 0.01% to 1.5%, more preferably from 0.1% to 0.5% by weight of the mild soap-based cleansing cream composition of the present invention.

C2 organic semi-synthetic water soluble polymer

Examples of the organic semi-synthetic water-soluble polymer include, but are not limited to: cellulose derivatives such as carboxymethyl cellulose (CMC), hydroxyethyl cellulose (HEC), hydroxypropyl cellulose (HPC), hydroxy Propylmethylcellulose (HPMC), guar Gum derivatives such as cationic guar, starch derivatives such as cationic starch, hydroxypropyl starch phosphate, or mixtures thereof; preferably hydroxyethyl cellulose (HEC), hydroxypropyl methylcellulose (HPMC), hydroxypropyl The starch phosphate is more preferably hydroxypropylmethylcellulose (HPMC), hydroxypropyl starch phosphate, and particularly preferred is hydroxypropylmethylcellulose (HPMC). The polymer of the present invention comprises from 0.0% to 3.0%, preferably from 0.01% to 2.0%, more preferably from 0.2% to 1.0% by weight of the mild soap-based cleansing cream composition of the present invention.

C3 organic synthesis water soluble polymer

Examples of the organic synthetic water-soluble polymer include, but are not limited to, polyethylene oxide having a molecular weight of less than 1.2 million, an acrylic polymer, or a mixture thereof.

The polyoxyethylene having a molecular weight of less than 1.2 million has a structure conforming to (0-CH ₂ -CH ₂ ) X, and it is believed that the polymer can provide a very long molecular chain, which can obtain a very good lattice structure of the soap-based cleansing paste. At the same time, the interfacial film of the surfactant can be reinforced, and the resistance of the system can be reduced, which is beneficial to the improvement of the foam properties and the skin feel of the present invention. Suitable examples of the polyethylene oxide include, but are not limited to, those having the following INCI names: PEG-2M (molecular weight 100,000), PEG-5M (molecular weight 200,000), PEG-7M (molecular weight 300,000), PEG-14M (molecular weight 400,000-600,000), PEG-20M (molecular weight 900,000), or a mixture thereof. Preferred are PEG-2M, PEG-7M, PEG-14M, more preferably PEG-7M, PEG-14M. Such polymers comprise from 0.0% to 1.0%, preferably from 0.01% to 0.5%, more preferably from 0.01% to 0.15% by weight of the mild soap-based cleansing cream compositions of the present invention.

The acrylic polymer is believed to provide the viscosity, levitation force and thixotropic properties of the soap-based cleansing paste, which is beneficial to the high and low temperature stability of the present invention. Suitable examples of the acrylic polymer include, but are not limited to, a polyalkenyl polyether crosslinked acrylic polymer having the name INCA under the name Carbomer, trade name Carbopol 980/981/940/941, Ultrez 10 (available) From Lubrizol, trade name SuperGel ^TM CE/SK/EW (available from Zhongshi Chemical); INCI name is acrylate/C10-30 alkyl acrylate crosslinked polymer, trade name Ultrez 20, Ultrez 21, ETD2020 (available from Lubrizol); INCI name is acrylate copolymer, trade name Carbopol AQUA SF-1 (available from Lubrizol), trade name SuperGel ^TM AC30 (available from Zhongshi Chemical) ), trade name Aculyn 33 (available from Rohm and Haas); and INCI name acrylate/stearyl ethoxylate (20) methacrylate copolymer, trade name A _C ulyn 22 (available From Rohm and Haas), or a mixture thereof. Preferred is Ultrez 20, Carbopol AQUA SF-1, Aculyn 22, more preferably Carbopol AQUA SF-1, Aculyn 22, or a mixture thereof. Such polymers comprise from 0.0% to 8.0%, preferably from 0.3% to 5.0%, more preferably from 0.6% to 2.4% by weight of the mild soap-based cleansing cream compositions of the present invention.

C4 inorganic water soluble polymer

The inorganic water-soluble polymer refers to those which can be dispersed into a colloid or a gel in an aqueous system or a water-oil system. A natural or synthetic composite silicate having a layered structure as shown in the following Figure (1).

In the layered structure, the side of the crystal layer carries an OH group to impart hydrophilicity to the polymer; the crystal layer has a permanent negative charge, which can adsorb cations to maintain charge balance, adsorbed cations. It can be exchanged. The upper crystal layer and the lower crystal layer are mainly SiO ₂ layers, and the M _x O _y layer may be MgO, A1 ₂ 0 ₃ , or a mixture thereof.

Such polymers, which are commonly referred to as hydrophilic, swellable in water, have a cationic E+ adsorbed between the crystal layers, which are inorganic cations such as Ca ²⁺ which can form a hydration and provide hydrophilicity. Na+, Mg ²⁺ , K+, Li+; preferably Ca ²⁺ , Na+, more preferably Na+. The inorganic cation can be ion exchanged with an organic cationic compound such as a cationic quaternary ammonium salt to give a polymer which is generally referred to as lipophilicity. A cationic quaternary ammonium salt capable of providing lipophilicity, the structure of which satisfies the formula (VI).

R ₂ +

Ri- N― R ₃ X

CH ₃

Ri = C _1Q — C ₂₂ long chain alkyl R ₂ = Ri or a CH ₃

X = C1 or Br - preferably octadecyltrimethylammonium chloride (1831), dioctadecyltrimethylammonium chloride (D1821), octadecyldimethylbenzylammonium chloride (1827) ), cetyltrimethylammonium chloride (1631), cetyldimethylbenzylammonium chloride (1627), dodecyldimethylbenzylammonium chloride (1227), more preferably Octadecyldimethylbenzylammonium chloride (1827), dioctadecyltrimethylammonium chloride (D1821), particularly preferably dioctadecyltrimethylammonium chloride (D1821).

The inorganic water-soluble polymer, after being dispersed in water, can form a lattice structure (or honeycomb) as shown in FIG. Examples of inorganic water-soluble polymers suitable for use in the present invention include, but are not limited to, lithium magnesium silicate of synthetic origin, magnesium aluminum silicate of synthetic origin, bentonite of natural origin, and hectorite of natural origin (such as the trade name Bentone). EW, available from Elementis), stearyl dimethyl benzyl ammonium chloride hectorite (such as the trade name Bentone 27V, available from Elementis), bis-stearyl dimethyl ammonium chloride Stone (e.g., trade name Bentone 38V, available from Elementis Corporation), preferably hectorite of natural origin, distearyl dimethyl ammonium chloride hectorite, or mixtures thereof. It is believed that providing the formulation with the desired viscosity, levitation force and thixotropic properties is beneficial to the high and low temperature stability of the present invention, the improvement in skin feel after washing, and good spreadability. The polymer of the present invention comprises from 0.01% to 5.0%, preferably from 0.2% to 3.0%, more preferably from 0.4% to 1.5% by weight of the mild soap-based cleansing cream composition of the present invention. The rheology modifier in the mild soap-based cleansing cream composition suitable for the present invention may be composed of one or more of the above polymers, preferably two or more polymers, more preferably three or more polymers.

The rheology modifier, when used in an effective amount, generally results in an overall viscosity (Brookfield LV-II DV-IL 25 ° C, 20 rpm, 4 # rotor) of the soap-based cleansing cream composition of the present invention of > 10000 mPa. s, preferably > 50000 mPa.s, more preferably > lOOOOOOmPa.s

D water

The mild soap-based cleansing cream compositions of the present invention comprise from 15.0% to 90.0%, preferably from 25.0% to 85.0%, more preferably from 39.5% to 76.0% by weight of the composition of deionized water.

2 optional components

The mild soap-based cleansing cream compositions of the present invention, in some embodiments, also include additional optional ingredients known or effective for application to the skin. Additional amphoteric surfactants, additional dispersing agents, additional emulsifiers, additional appearance modifiers, and additional skin feel modifiers are described in detail below:

A amphoteric surfactant

The mild soap-based cleansing cream compositions of the present invention may, in some embodiments, comprise from 0.1% to 10.0%, preferably from 0.3% to 5.0%, more preferably from 1.0% to 3.5% by weight of the composition, suitable for use on the skin. Amphoteric surfactant. It is considered that the amphoteric surfactant can further enhance the foaming property of the soap-based cleansing paste, form a lattice structure and a micelle effect by itself or with an anionic surfactant in the essential components of the composition of the present invention, and improve the soap-based cleansing surface. The viscosity and high and low temperature stability of the paste are beneficial, which is beneficial to the improvement of the rinsing sensation and the improvement of the skin feel after washing. Such optional amphoteric surfactants should be used within the pH range used in the soap-based compositions of the present invention and are compatible in physical and chemical properties with the essential components of the compositions within the pH range. .

Amphoteric surfactants suitable for use in the present invention include, but are not limited to, one or more of the surfactants known as betaines, imidazolines. Among them, the structure of the betaine conforms to the formula (VII), and the structure of the imidazoline conforms to the formula (VIII).

Formula (VII) Formula (VIII) wherein R is a C ₈ -C ₂₂ independent or mixed long chain alkyl group, preferably a chain length of C _1Q - C ₁₈ , more preferably C ₁₂ - C _{16 ;} Ri may be R or RCONHCH ₂ CH ₂ CH ₂ -, R ₂ may be a CH ₂ —, a CH ₂ CH ₂ —, a CH ₂ CH (OH) CH ₂ —; A may be COO, S0 ₃ ; For H, Na. Preferred betaines are cocamidopropyl betaine, lauramide propyl betaine, cocamidopropyl hydroxysultaine, lauryl hydroxy sultaine, preferably imidazoline is N- (cocamide) Ethyl)-N-(2-hydroxyethyl)-β-aminoacetate (ie sodium cocoamphoacetate) and hydrazine-(lauric acid amide)-Ν-(2-hydroxyethyl)- Sodium β-aminoacetate (i.e., sodium lauryl amphoacetate). More preferred amphoteric surfactants are cocamidopropyl hydroxysultaine, sodium lauryl amphoacetate, or mixtures thereof.

ΒDispersant

The mild soap-based cleansing cream compositions of the present invention may, in some embodiments, comprise from 0.1% to 30.0%, preferably from 1.0% to 15.0%, more preferably from 2.0% to 10.0% by weight of the composition, suitable for use on the skin. Dispersing agent. It is considered that the dispersant can enhance the degree of dispersion of the soap base in the saponification reaction, and is advantageous for the high and low temperature stability of the soap-based cleansing paste, the reproducibility of the production process, and the ease of handling. Such optional dispersing agent should be compatible with the essential components of the soap-based composition of the present invention in physical and chemical properties and should not adversely affect the viscosity, appearance and the like of the soap-based cleansing paste. Dispersing agents which may be suitable for use in the soap-based compositions of the present invention include, but are not limited to, polyols, polyethylene glycols having a molecular weight of less than 20,000, or mixtures thereof.

The polyol suitable for the present invention is glycerin, sorbitol, pentaerythritol, propylene glycol, 1,3-butanediol, and a mixture of two or more thereof, preferably glycerin or propylene glycol, more preferably glycerin. The content of the glycerin is preferably from 2.0% to 10.0%;

Polyethylene glycol having a molecular weight of less than 20,000 suitable for the present invention may be selected from those having the INCI name of PEG-4 (molecular weight 200), PEG-6 (molecular weight 300), PEG-8 (molecular weight 400), PEG-12 (molecular weight 600), PEG-20 (molecular weight 1000), PEG-32 (molecular weight 1500), PEG-75 (molecular weight 3300), PEG-100 (molecular weight 4500), PEG-150 (molecular weight 8000) compound; preferably PEG-6, PEG-8, PEG-12, more preferably PEG-8. The content of the PEG-8 is preferably 2.0 - 10.0 o. Suitable for the dispersant of the present invention, preferably glycerin, PEG-8, and glycerol: PEG-8 is 1: 4 4: 1, preferably 1: 2 2:

A mixture of 1, more preferably glycerin, glycerol: PEG-8 is a mixture of 1: 2 2: 1, particularly preferably glycerol. C emulsifier

The mild soap-based cleansing cream compositions of the present invention may, in some embodiments, comprise from 0.0% to 5.0%, preferably from 0.1% to 3.0%, more preferably from 0.2% to 1.0% by weight of the composition, suitable for use on the skin. Emulsifier. It is believed that the emulsifier is useful for improving the low-temperature stability of the soap-based cleansing cream and improving the skin feel after washing. Such an optional emulsifier should be compatible with the essential components of the composition of the present invention in physical and chemical properties and should not adversely affect the viscosity, appearance and the like of the soap-based cleansing paste.

Examples of emulsifiers suitable for the present invention include, but are not limited to, a carbon chain having a hydrophobic group of C ₈ - C ₂₂ , independently or mixed or branched, and a chain length may preferably be preferred. a carbon chain of _{1 () 18} , more preferably a carbon chain of C ₁₆ - C ₁₈ ; a hydrophilic group is a hydroxyl group (an OH), a nonionic surfactant or an anionic surfactant of an ether group (mono-O-), a phosphate group, a sulfate group, a sulfonate group, a carboxylate group, preferably a fatty alcohol polyoxyethylene ether, a fatty acid glyceride, a polyglycerol ester, a monoalkane The phosphatidyl phosphate, monoalkyl phosphate, more preferably pingping, stearic acid monoglyceride, cetyl phosphate, potassium cetyl phosphate, particularly preferably potassium cetyl phosphate.

D appearance improver

The mild soap-based cleansing cream compositions of the present invention may, in some embodiments, comprise from 0.1% to 8.0%, preferably from 0.3% to 4.0%, more preferably from 0.5% to 3.0% by weight of the composition, suitable for use on the skin. Appearance improver. It is considered that the appearance improving agent can maintain the appearance consistency of the soap-based cleansing paste at a high temperature, a room temperature or a low temperature, or can impart (or enhance) the appearance defined by the soap-based cleansing paste. Such an optional appearance improving agent should be compatible with the essential components of the composition of the present invention in physical and chemical properties, and should not adversely affect the viscosity, feeling of use, foam, etc. of the soap-based cleansing paste.

The appearance improving agent may include those compounds which impart a more brilliant pearlescence to the appearance of the soap-based cleansing cream, or which makes the appearance of the soap-based cleansing cream completely free of pearlescence. Suitable examples include, but are not limited to, ethylene glycol monostearate, ethylene glycol distearate, propylene glycol monocaprate and glyceryl palmitate or glycerides thereof, higher fatty acid alkyl alcohol amides, fatty alcohols, Fatty acid, polyethylene polymer and latex, zinc stearate, magnesium stearate, mica, ultrafine silica, ultrafine zinc oxide, ultrafine titanium dioxide, magnesium aluminum silicate, or a mixture thereof, preferably monostearic acid Ethylene glycol ester, ethylene glycol distearate, mica, more preferably ethylene glycol bis-stearate, this compound can make the soap-based cleansing cream obtain more brilliant pearlescence.

E skin feel regulator

The mild soap-based cleansing cream compositions of the present invention may, in some embodiments, comprise from 0.1% to 8.0%, preferably from 0.1% to 5.0%, more preferably from 0.2% to 2.0% by weight of the composition, suitable for use on the skin. Skin feel modifier. It is considered that the skin feel conditioning agent is advantageous for the skin feeling after washing which is not dry and not tight, as described in the soap-based cleansing cream. Such an optional skin feel modifier should be compatible with the essential components of the composition of the present invention in physical and chemical properties and should not adversely affect the viscosity, foam, stability, appearance, etc. of the soap-based cleansing cream. .

Examples of skin feel modifiers suitable for the present invention include, but are not limited to: mineral oils, vegetable oils and derivatives thereof, lactic acid derivatives of fatty acids, ultrafine inorganic powders, inorganic water soluble polymers, cationic quaternary ammonium salts, bionics Phospholipids, or mixtures thereof. Preferred are mineral oil, castor oil derivative, fatty acid lactic acid lactate, ultrafine silica, magnesium aluminum silicate, fatty amide propyl PG-dimethyl ammonium chloride phosphate, more preferably sodium isostearyl lactylate, Myristyl propyl PG-dimethylammonium chloride phosphate, particularly preferably sodium stearoyl lactyl lactylate.

The mild soap-based cleansing cream compositions of the present invention, in some embodiments, also include additional additional optional ingredients known or effective for use on the skin. The weight of such optional components is from 0.0% to 15.0% by weight of the composition, typically from 0.01% to 10.0%, more typically from 0.1% to 4.0%. Such optional components should be associated with the basic set of compositions of the present invention The fraction is compatible in physical and chemical properties and should not adversely affect the viscosity, foam, stability, appearance, etc. of the soap-based cleansing cream.

Non-limiting examples of optional components for use in the soap-based facial cleansing cream compositions of the present invention include perfumes, preservatives (e.g., DMDM hydantoin), pigments, active ingredients (e.g., heat sensitive agents, cooling agents, sterilization) Agents, vitamins and their derivatives), anti-allergic agents, UV absorbers.

3 use brigade

The mild soap-based cleansing cream of the present invention is used in a conventional manner for cleansing facial skin, and mainly includes the following steps:

(A) moisturizing the hands and face;

(B) Extrude an effective amount of a mild soap-based cleansing cream from the hose onto one of the wet hands. The effective amount is usually in the range of from 0.1 g to 10 g, preferably from 0.5 g to 2.0 g; or alternatively, the strip is usually from 0.1 cm to 4.0 cm in length, preferably from 0.2 cm to 2.0 cm.

(C) Spread the strips with the other hand, then blister with both hands;

(D) Then gently rub your hands on your face;

(E) Finally, wash the mild soap-based cleansing cream on the face of the hands with water.

Each time the face is cleaned, the above steps may be carried out one or more times as needed until the cleaning requirement is reached, preferably once.

The above steps can be performed one or more times a day as needed to achieve the effect of cleansing the face.

4 ^ Craft

The present invention also provides a novel, highly reproducible soap-based cleansing cream production process. As described in the background art, the influence factors affecting the appearance and stability of the soap-based cleansing cream, in the production process of the traditional soap-based cleansing paste, the lye is in contact with the high-concentration of the fatty acid liquid in a continuous manner, and it is easy to generate a large soap bar. It is very difficult to uniformly disperse the large soap bar into fine soap particles. The production process of the soap-based cleansing paste of the present invention firstly dilutes the fatty acid with other components which can be compatible with the formulation, and disperses it into fine fatty acid oil droplets by stirring, when the alkali liquid is in contact with the fatty acid oil drop, directly Produces fine soap particles with rapid mixing. It is considered that the production process is simple and easy to operate, has good reproducibility, can avoid the quality problem of the frequent occurrence of the soap-based cleansing paste, and has short production time, low energy consumption, and pearlescence when the temperature is lowered.

The method for producing a mild soap-based cleansing cream composition according to the present invention: all the substances in the mild soap-based cleansing cream composition are divided into three parts: Phase A: In addition to Phase B and in the composition Other components other than phase C; phase B: alkali solution formulated with alkali and balance water; phase C: composition required to be added at 50 ° C; produced as follows: 1 only phase materials are added to the main In the reaction vessel, mix and heat to the sputum, stir until the material dissolves and disperses evenly. Fatty acids are in the form of small oil droplets; only

2 Only add the phase materials to the premixed kettle in turn, heat to male I ^TC while stirring, continue to stir until the alkali dissolves evenly;

3 Only ΠΠΜΜ 搅拌 While stirring, add the phase to the phase quickly, control the temperature to « °C, stir ffli at the rate of ΙΙΠΜΜ ,, then stir at a rate of Ι ΙΙΜ « ° °c until the soap bar is evenly dispersed, all materials are mixed Even; only

4 Only cool down to the i ! C price irc, add the phase material in turn, stir evenly at the rate of IIllKMlIfflll, and then discharge the mild soap-based cleansing cream composition. Only the beneficial effects of the present invention:

In view of various problems existing in existing cleansing products, the present invention controls a certain degree of neutralization by selecting appropriate fatty acid types and ratios, particularly reducing the content of fatty acids in the formulation, while adding or improving some natural sources, very mild anions. The amount of the surfactant to be added, and the kind and amount of the appropriate anionic surfactant are selected, and the feeling of dryness and tightness after washing is effectively improved without affecting the viscosity, cleansing power and foam of the soap-based cleansing cream.

The present invention selects an appropriate rheology modifier and adds an anionic surfactant or an amphoteric surfactant to promote the formation of a lattice structure in the soap matrix system. When a grid structure exists in the soap-based system, the components in the system are placed in each grid, maintaining relative independence, so that interactions do not occur due to changes in external conditions, thereby maintaining better The properties of each component give the product a good stability.

Therefore, the mild soap-based cleansing cream composition of the present invention has a good skin feel which is mild and moisturized and does not dry and is not tight after washing; and good high and low temperature stability.

The production process provided by the present invention dilutes the concentration of the first fatty acid solution, and is stirred to be dispersed into fine oil droplets before being contacted with the alkali solution by stirring, instead of being connected into a piece, so that when contacted with the alkali solution, the resulting It is a fine and even soap particle instead of a soap block, which can well avoid the problems caused by dispersing the soap in the traditional production process, making the production process easy to maintain consistency and avoiding the problem of poor reproducibility. It saves the time for the soap to disperse, improves production efficiency and reduces energy consumption. DRAWINGS

Figure 1 Inorganic water soluble polymer layered structure.

Figure 2 Electron micrograph of the dispersed hectorite. Concrete

The following is a non-limiting example of a mild soap-based facial cleanser of the present invention. These examples are given for illustrative purposes only. It is to be understood that the invention is not limited by the scope of the invention.

In these examples, all concentrations are by weight unless otherwise indicated. The term "minor matter" refers to those materials which are optional, such as preservatives, perfumes, pigments, etc., and the choice of these minor materials will vary with the physical and chemical properties selected to produce the particular ingredients of the present invention.

Preparation Example I X

A suitable method for preparing the mild soap-based cleansing cream described in Embodiment IX is the production process of the present invention, that is, the phase A material is sequentially added to the main reaction vessel, and slowly heated to 78 ° C - 82 ° C, stirred. The material is completely dissolved and dispersed uniformly, and the fatty acid is in the form of fine oil droplets; the phase material is sequentially added to the premixing kettle, heated to «3⁄4STC with stirring, and the stirring is continued until the alkali is dissolved uniformly; stirring at a rate of 0.15-0.30 m/s Under the conditions, add the B phase material dissolved in the premixed pot, control the temperature to «sc, maintain the bay for 10 minutes, then stir at a rate of o.o5-o.iom / _s 3⁄4s c for about 30 minutes, until The soap block is evenly dispersed, and all the materials are uniformly mixed; when the temperature is lowered to 45 ° C to 50 ° C, the phase C material is sequentially added, and stirring is continued at a rate of 0.05-0.1 m/s to ensure a uniform mixture. The mild soap-based cleansing cream composition described is discharged. change

Among the phase A substances, PEG-14M, PEG-7M (if these substances are used), need to be pre-dispersed, usually formulated

5% concentration solution. For phase C substances, if an acrylic emulsion is used, such as acrylate/stearyl ethoxylate (20) methacrylate copolymer (trade name A _C ulyn 22, from Rohm and Haas), acrylate Copolymer (trade name Carbopol)

AQUA SF-1, from Lubrizol, or SuperGel ^TM AC30, derived from the Lion Chemical), requires pre-dispersion water, water is generally the ratio of 1: 1-1: 2; If the acrylic or other polymer The powder product also needs to be pre-dispersed, usually in a solution with a concentration of 2% to 3%.

Example I -V Formula

Weight (%)

Example No. I II III IV V Lauric Acid 4.0 4.0 4.0 4.0 3.0 Myristic Acid 4.0 4.0 4.0 4.0 3.0 Stearic Acid 4.0 4.0 6.0 6.0 9.0

A PEG-14M 0.05 - 0.05 - 0.05

PEG-7M-one 0.05-cocamidopropyl hydroxysulfobetaine (30%) 3.5-3.5-monolauryl propyl hydroxy sultaine (30%) one 3.5 to 3.5 one Sodium alginate sodium sulphate (40%) 5.0 5.0 4.5 4.5 4.0 Potassium cocoyl glycinate (30%) 28.0 20.0 20.0 20.0 30.0 Glycerin 8.0 8.0 2.0

PEG-8 1-111 4.0 Ethylene glycol distearate 2.0 1.5 2.0 1.5 A pair of stearyl dimethyl ammonium chloride hectorite 1.0 0.6 1.0 0.8 1.2 Sphalerite - 0.2 - 0.4 Hydroxypropyl A Cellulose-0.3-111-myristamide propyl-PG-dimethylammonium chloride

One to one 0.5 acid ester

Isostearoyl lactyl lactylate a 0.5 - 1.0 1.0 potassium hydroxide (purity by 100%) 2.5 2.64 2.85 2.68 2.97

B

Deionized Water Balance Amount Balance Amount Balance Amount Acrylate / Stearyl Ethoxylate (20) A

One to one 1.0 acrylate copolymer (30%)

C Acrylate Copolymer (30%) 4.0 4.0 4.0 4.0 4.0 Deionized Water

a small amount of material

VI-X formula

Weight (%)

Example No. VI VII VIII IX X Lauric Acid 3.0 3.0 3.0 4.0 4.0 Myristic Acid 3.0 4.0 4.0 4.0 4.0 Stearic Acid 9.0 9.0 9.0 10.0 10.0

PEG-14M 0.05 - 0.05 one

A

PEG-7M-0.05-0.05-cocamidopropyl hydroxysultaine (30%) 3.0 2.0 7.0 monolauryl propyl hydroxy sultaine (30%) - 1.0 - 7.0 sodium lauryl amphoteric acid (40%) 3.0 3.0 3.5 3.5 8.0 Potassium cocoyl glycinate (30%) 22.0 20.0 26.0 18.0 24.0 Glycerol-8.0 4.0 8.0 6.0

PEG-8 8.0 1.1 2.0 Glycol distearate 2.0 1.5 2.0 1.5 1.0 Bistearone dimethyl ammonium chloride hectorite 1.0 0.6 1.0 0.8 0.8 Hectorite-0.2-0.4 Hydroxypropyl Methylcellulose 0.2 0.3-one-myristyl propyl PG-dimethylammonium chloride

One 0.5 to 0.5 acid ester

Sodium stearoyl lactyl lactylate 0.5 0.5 0.5 1.00 0.5 Potassium hydroxide (purity by 100%) 2.83 3.14 3.14 3.47 3.76

B

2.0 1.0 3.0 a 1.5-based acrylate copolymer (30%)

C Acrylate Copolymer (30%) 3.0 3.0 a 5.0 3.5 Deionized Water

a small amount of material

The above mild cleansing cream has a good skin feel effect which is mildly moisturized and washed without drying and not tight.

Preparation of Comparative Example I -V

The production process of preparing the comparative example adopts the traditional soap-based cleansing paste production process, specifically: adding the phase A material to the main reaction tank in turn, and slowly stirring and heating to 78 ° C - 82 ° C, after the materials are completely dispersed uniformly, At a rate of 0.03-0.08 m / s, the B phase material dissolved in the premixing pot is added, and the temperature is kept at this rate for a period of about 40 min - 120 min until the soap bar is completely dispersed; the stirring is maintained. Rate, add phase C material in turn, stir and dissolve evenly and then cool down; when the temperature drops to 50 °C, add phase D material in turn, continue to stir at a rate of 0.03-0.08 m / s, to ensure a homogeneous mixture, then you can material.

Comparative Example I -V Formula

Myristic acid 20.0 18.0 16.0 14.0 16.0 Stearic acid 10.0 8.0 12.0 15.0 14.0 Glycerol-20.0 20.0 14.0 16.0

1,3 butanediol 10.0 10.0 8.0 a 10.0

PEG-8 14.0 One 10.0 One Shea Butter 2.0 2.0 One 1.0 2.0 White Oil 15# One One 2.0 1.0 1.0 Stearic Acid Polyoxyethylene Ether (2) 0.5 One 0.5 One 0.5 Stearic Acid Monoglycol One 0.5 One One 0.5 potassium hydroxide (purity by 100%) 6.71 5.93 5.98 6.08 5.86

B

Deionized water balance margin remaining balance margins fatty alcohol polyoxyethylene ether (3EO) (70%) 3.0 one by one 0.5 monododecyl phosphate (MAP) (50%) one 5.0 one one one

C ₈ _ ₁₀ alkyl glycoside (50%) one by one 5.0 one-cocamidopropyl betaine (30%) one by one 8.0 5.0

C

Ethylene glycol distearate 2.0 1.0 - 1.5 A sodium isostearyl lactyl lactate 0.5 0.5 - 0.5 0.5 Hydroxypropyl methylcellulose 0.5 - 0.5 - One hydroxyethyl cellulose A 0.5 0.5 - 0.8

D small amount of substance

The evaluation method of use was as follows: 30 testers (15 males and 15 females, 55 years old - 55 years old) were selected, and the examples I-X and the comparative examples I-V were blindly tested. Each of the examples and the comparative examples were measured in parallel three times. The testers scored according to their own sense of use. The evaluation items involved spreadability, foam richness, foam texture, flushing, and skin feel after washing. The scoring standard is based on a 5-point scale, with 1 being the worst and 5 being the best. The evaluation result is the average score of all testers' scores. The higher the average score, the better the effect.

Test Method: Wet the hands and face; take 0.5 g of the sample on one of the wet hands, spread the sample with the other hand, then puff the hands; then massage the hands on the face. Finally wash your hands and face with running water, let the hands and The face is naturally dry.

The results of the evaluation of the use of the examples and the comparative examples are shown in Table 4.

Examples and Comparative Uses » Results

髙low temperature stability

The high and low temperature stability evaluation method is: the examples Ι-Χ and the comparative example I-V are respectively placed in a 40 ml transparent plastic bottle, respectively placed at room temperature, 5 ° C and 50 ° C incubator, continuous observation 3 months. Using room temperature samples as a control, the examples and comparative examples were returned to room temperature at 5 ° C, 50 ° C, 5 ° C, and returned to room temperature at 50 ° C (eg, layered, thinned, hardened, soap precipitated) Comprehensive change in the degree of change in appearance, appearance, etc.). The comprehensive scoring standard uses a 5-point scale, with 1 being the worst and 5 being the best. Five people are selected for the score. The evaluation result is the average score of the five-person comprehensive score. The higher the average score, the better the high-low temperature stability. The results of the stability evaluation of the examples and comparative examples are shown in Table 5. Examples and Comparative Examples 髙 Low Temperature Stability Results

Claims

Claim

A mild soap-based cleansing cream composition comprising: (A) from 0% to 50.0% by weight based on the total weight of the soap-based cleansing cream composition; (B) on the soap-based cleansing surface The total weight of the paste composition is 2.0% 3⁄4 30.0% anionic surfactant,

(C) a rheology modifier comprising from 0.1% to 10.0% by weight based on the total weight of the soap-based cleansing cream composition; and (D) a balance of water, the pH of the soap-based cleansing cream composition being 8.0-11.0 .

The mild soap-based cleansing cream composition according to claim 1, wherein the soap base is suitable for application to the skin by 2.0% / _σ 40.0% of the total weight of the soap-based cleansing cream composition. The fatty acid is composed of a base having a total weight of 0.0 ° / _σ 10.0% of the soap-based cleansing paste composition, and the base is used in an amount such that the degree of neutralization of the fatty acid is 50 ° / _σ 100%.

The mild soap-based cleansing cream composition according to claim 2, wherein the fatty acid is used in an amount of 8.0 ° / _σ 35.0%, preferably 10.0 ° / _σ, based on the total weight of the soap-based cleansing cream composition. 28.0% is further preferably 12.0 ° / _σ 18.0%; the fatty acid is selected from the group consisting of caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, G ₆ acid, G ₈ acid, or more a mixture of lauric acid, myristic acid, palmitic acid, stearic acid, G ₆ acid, G ₈ acid, more preferably lauric acid, myristic acid, stearic acid a mixture of the lauric acid, myristic acid, and stearic acid in a preferred weight ratio of lauric acid: myristic acid: stearic acid water: for: «—steps preferred dish water ^ stiff root: rooting Most preferably, the water value is repaired. The base is selected from the group consisting of one or more of KOH, NaOH, ISHO triethanolamine, preferably K〇H, triethanolamine, and mixtures thereof, more preferably KOH; the soap-based cleansing cream combination The degree of neutralization of the fatty acid in the solvent is preferably 50°/ _σ 100%, further preferably 70°/ _σ 90%, particularly preferably 80% 90%>

4. A mild soap-based cleansing cream composition according to claim 1 wherein said anionic surfactant comprises from 4.0% to 12.0%, preferably from 5.0% to 10.0% by weight based on the total weight of the soap-based cleansing cream composition. % The anionic surfactant is selected from the group consisting of: sodium laureth polyoxyethylene ether sulfate, lauryl alcohol polyoxyethylene ether sulfate, sodium lauryl sulfate, potassium lauryl sulfate, fatty acid monoglyceride sulfate, fatty alcohol based sulfo group One or more of a succinate salt, a potassium monoalkylphosphate, a sodium monoalkylphosphate, and a hydrazine-fatty acid amino acid salt.

The mild soap-based cleansing cream composition according to claim 4, wherein the anionic surfactant is selected from the group consisting of hydrazine-fatty acyl amino acid salts; and the hydrazine-fatty acyl amino acid salt is a fatty acid chloride of an amino acid. An acylated derivative, preferably from: sarcosine, glycine, glutamic acid, taurine, alanine, threonine, further preferably sarcosine, glycine or glutamic acid; The fatty acyl amino acid salt is preferably sodium lauroyl sarcosinate, potassium lauroyl sarcosinate, lauriyl sarcosine triethanolamine, sodium cocoyl glycinate, potassium cocoyl glycinate, cocoyl glycine triethanolamine, cocoyl valley Sodium citrate, potassium cocoyl glutamate, cocoyl glutamic acid triethanolamine, sodium myristoyl sarcosinate, myristoyl glutamic acid triethanolamine, a mixture of one or more, further preferably lauroyl musculature Sodium, sodium cocoyl glycinate, potassium cocoyl glycinate, cocoyl glutamic acid Sodium, potassium cocoyl glutamate, more preferably sodium cocoyl glycinate, potassium cocoyl glycinate, particularly preferably potassium cocoyl glycinate.

6. The mild soap-based cleansing cream composition according to claim 1, wherein the rheology modifier is selected from the group consisting of organic natural water-soluble polymers, organic semi-synthetic water-soluble polymers, and organic synthetic water-soluble polymerizations. At least one of the substance and the inorganic water-soluble polymer is preferably polymerized from two or more of an organic natural water-soluble polymer, an organic semi-synthetic water-soluble polymer, an organic synthetic water-soluble polymer, and an inorganic water-soluble polymer. The composition of the composition is more preferably composed of three or more of an organic natural water-soluble polymer, an organic semi-synthetic water-soluble polymer, an organic synthetic water-soluble polymer, and an inorganic water-soluble polymer.

7. The mild soap-based cleansing cream composition according to claim 6, wherein the organic natural water-soluble polymer is selected from the group consisting of xanthan gum, gum arabic, carrageenan, tragacanth gum, guar bean. a mixture of one or more of a gum, an alginic acid and a salt thereof, and a chitin, the polymer comprising from 0.0% to 3.0% by weight based on the total weight of the soap-based cleansing cream composition; The substance is selected from the group consisting of cellulose derivatives, preferably carboxymethyl cellulose, hydroxyethyl cellulose, hydroxypropyl cellulose, hydroxypropyl methyl cellulose, guar derivatives, starch derivatives, hydroxypropyl starch phosphate a mixture of one or more of the esters, the polymer comprising from 0.0% to 3.0% by weight of the total of the soap-based cleansing cream composition; the organic synthetic water-soluble polymer selected from the group consisting of: a total weight of the paste composition of 0.0% to 1.0% of polyethylene oxide having a molecular weight of less than 1.2 million, an acrylic polymer of the total weight of the soap-based cleansing cream composition, or a mixture thereof; The water soluble polymer is selected from water systems or water-oil a natural or synthetic complex silicate which can be dispersed to form a colloid or gel, preferably a lithium magnesium silicate source of synthetic origin, a magnesium aluminosilicate of synthetic origin, a bentonite of natural origin, a hectorite of natural origin, and a hard Aliphatic dimethylbenzylammonium chloride hectorite, distearyl dimethyl ammonium chloride hectorite, further preferably natural source of hectorite, distearyl dimethyl ammonium chloride hectorite , or a mixture thereof; the polymer comprises 0.01% S 5.0%, preferably 0.2°/cg, of the total weight of the soap-based cleansing cream composition

More preferably, it is 0.4 ° / cg 1.5%.

8. A mild soap-based cleansing cream composition according to claim 1 wherein said mild soap-based cleansing cream composition further comprises from 0.0% to 15.0% by weight based on the total weight of said soap-based cleansing cream composition. % of an additional optional component suitable for the skin; said additional optional component preferably comprising from 0.01% to 10.0%, more preferably from 0.1% to 4.0%, by total weight of the soap-based cleansing cream composition The additional optional component is preferably one or more of an additional amphoteric surfactant, dispersant, emulsifier, appearance modifier or skin feel modifier.

9. A mild soap-based cleansing cream composition according to claim 8 wherein said amphoteric surfactant comprises from 0.1% to 10.0%, preferably 0.3%, by total weight of said soap-based cleansing cream composition. 5.0% is further preferably 1.0% to 3.5%; the amphoteric surfactant is one or more selected from the group consisting of betaine, a surfactant of imidazoline, and the structure of the betaine conforms to the formula (VII). The structure of the imidazoline conforms to the formula (VIII):

Formula (VII) Formula (VIII) wherein R is a 3⁄4- ₂ independent or mixed long-chain alkyl group, preferably a long-chain alkyl group having a chain length of GcrG ₈ , more preferably a long-chain alkane of G Gs F3⁄4 is R or FDONHCH ₂ CH ₂ CH ₂ -, F3⁄4 can be a CH ₂ —, — CH ₂ CH ₂ — , — CH ₂ CH (OH) CH ₂ —; A is 000, 83⁄4; B can be H , Na; the betaine is preferably cocamidopropyl betaine, lauramide propyl betaine, cocamidopropyl hydroxysultaine or lauryl hydroxy sultaine, imidazoline preferably N- (coconut Oleamide ethylene)-N-(2-hydroxyethyl)-β-aminoacetate or N-(lauric acid amide)-Ν-(2-hydroxyethyl)-β-aminoacetate, The amphoteric surfactant is further preferably cocamidopropyl hydroxysultaine, sodium lauryl amphoacetate, or a mixture thereof.

10. A mild soap-based cleansing cream composition according to claim 8 wherein said dispersing agent comprises from 0.1% to 30.0%, preferably from 1.0% to 15.0%, based on the total weight of the soap-based cleansing cream composition. Preferably, 2.0% to 10.0% of the dispersing agent is selected from the group consisting of polyhydric alcohols, polyethylene glycol having a molecular weight of less than 20,000, or a mixture thereof; and the polyhydric alcohol is preferably glycerin, sorbitol, pentaerythritol, propylene glycol, 1, 3- One of butylene glycol, or a mixture of two or more thereof, further preferably glycerin, propylene glycol, more preferably glycerin, the glycerin preferably having a content of 2.0% by weight based on the total weight of the soap-based cleansing paste composition. 10.0% of the polyethylene glycol having a molecular weight of less than 20,000, preferably the INCI name is ΡΒ^4, ΡΒ^6, ΡΒ^8, ΡΒ^12, ΡΒ3-20, ΡΒ3-32, ΡΒ3-75, ΡΒ3-100 a polyethylene glycol of ΡΒ3·150; further preferably ΡΒ3·6, ΡΒ3-8, ΡΒ3-12, more preferably ΡΒ^8, the content of the ΡΒ8 is preferably based on the total weight of the soap-based cleansing cream composition 2.0° / _σ 10.0% The mixture of the polyol and the polyethylene glycol having a molecular weight of less than 20,000 is preferably glycerol: The weight ratio is small: a mixture having a small amount of m, and further preferably a glycerin: a deer weight ratio is small: two: a small mixture.

The mild soap-based cleansing cream composition according to claim 8, wherein the emulsifier comprises from 0.0% to 5.0, preferably 0.1, based on the total weight of the soap-based cleansing cream composition. ^ 3.0 is further preferably 0.2% to 1.0%; the emulsifier is selected from a carbon chain having a hydrophobic group of C ₈ - C ₂₂ , and the chain length may preferably be C _1Q - C ₁₈ , more preferably C ₁₆ - C ₁₈ , carbon The chain may be independent or mixed or branched; the hydrophilic group is a hydroxyl group, an ether group, a phosphate group, a sulfate group, a sulfonate group or a carboxylate nonionic surfactant or an anionic surfactant; Oxyethylene vinyl ether, fatty acid glyceride, polyglycerol ester, monoalkyl phosphate, monoalkyl phosphate, further preferably flattened, stearic acid monoglyceride, cetyl phosphate or cetyl potassium phosphate, particularly preferred Cetyl potassium phosphate.

The mild soap-based cleansing cream composition according to claim 8, wherein the appearance improving agent is from 0.1% to 8.0, preferably from 0.3% to 4.0, based on the total weight of the soap-based cleansing cream composition. 0.5% to 3.0%; the appearance modifier is selected from the group consisting of ethylene glycol monostearate, ethylene glycol distearate, monostearic acid and propylene glycol palmitate or glycerin thereof Ester, higher fatty acid alkyl alcohol amide, fatty alcohol, fatty acid, polyethylene polymer, latex, zinc stearate, magnesium stearate, mica, silica having a particle size of less than 500 nm, zinc oxide having a particle size of less than 500 nm or Titanium dioxide having a particle diameter of less than 500 nm, magnesium aluminum silicate, or a mixture thereof; preferably ethylene glycol monostearate, ethylene glycol distearate or mica; more preferably ethylene glycol bis-stearate.

A mild soap-based cleansing cream composition according to claim 8, wherein said skin feel adjusting agent comprises from 0.1% to 8.0, preferably 0.1, based on the total weight of the soap-based cleansing cream composition. ^ 5.0 is further preferably 0.2% to 2.0%; the skin feel modifier is selected from the group consisting of mineral oil, vegetable oil or a derivative thereof, a lactic acid derivative of a fatty acid, an inorganic powder having a particle diameter of less than 500 nm, an inorganic water-soluble polymer, a cation Quaternary ammonium salt, biomimetic phospholipid, or a mixture thereof, preferably mineral oil, castor oil derivative, fatty acid lactic acid lactate, silica having a particle size of less than 500 nm, magnesium aluminum silicate, fatty amide propyl PG-dimethyl chloride The ammonium phosphate is more preferably sodium isostearyl lactylate, myristyl propyl PG-dimethylammonium chloride phosphate, and particularly preferably sodium isostearyl lactylate.

14. A mild soap-based cleansing cream composition according to claim 8 wherein said additional optional components further comprise perfumes, preservatives, pigments, heat sensitizers, cooling agents, bactericides, a mixture of one or more of a vitamin or a derivative thereof, an antiallergic agent, and a UV absorber.

The method for producing a mild soap-based cleansing cream composition according to any one of claims 1 to 14, wherein all of the substances in the mild soap-based cleansing cream composition are divided into three parts. : Phase A: other components other than the B phase and the C phase in the composition; Phase B: an alkali solution which is a base and a balance of water; Phase C: a component which is required to be added at 50 ° C; Follow the steps below to produce:

1 d ^ each phase of the material was added to the main reactor in turn, mixed and heated to °0. C, stir until the substance is completely dissolved and dispersed uniformly, and the fatty acid is in the form of fine oil droplets; 2

2 Each phase of the material is added to the premixed kettle in turn, and heated to the point of stirring. C V, continue to stir until the alkali dissolves evenly; 2 32 戦 stir, add the phase to the phase quickly, and control the temperature to obtain. C °C, maintain Tao § «»

The rate is stirred by g and then at the rate of Tao ® . Incubate at C °C until the bar is completely dispersed and all materials are thoroughly mixed; 2

42. Cool down to V, add phase materials in turn, and mix well at the rate of Pottery ® to obtain the mild soap-based cleansing cream composition. 2