KR101965607B1 - External force-disintegrable solid cleanser comprising discontinous phase hydrogel and adhesive starch as binder and method for preparing the same - Google Patents

Abstract

The present invention provides a solid cleanser disintegrable by an external force and a preparation method of the same, wherein the solid cleanser comprises the following ingredients in the form of a discontinuous-phase hydrogel-powder complex: alginate; calcium sulfate; magnesium oxide; diatomite; corn starch; a surfactant; an additive; and water. The alginate and the calcium sulfate form a discontinuous-phase hydrogel with water to function as a binder for powder particulates; the corn starch is gelatinized into viscous starch with water to function as an adhesive for the powder particulates; and the discontinuous-phase hydrogel and the viscous starch may form, with the powder particulates, a discontinuous-phase hydrogel-powder complex having a three-dimensional structure. The solid cleanser disintegrable by an external force, according to the present invention, can be conveniently handled and used due to high water resistance, impact resistance, and high disintegrablity in response to an external force; can be formed into a single-use amount so as to prevent wasteful use of the product; has excellent cleansing power that enables deep cleansing of pores; and does not require double cleansing.

Description

TECHNICAL FIELD [0001] The present invention relates to an externally disintegrable solid cleanser comprising a discontinuous hydrogel and a corn starch as a binding agent, and a method for manufacturing the exfoliant-

The present invention relates to an externally disintegrable solid cleanser comprising a discontinuous hydrogel and corn starch as a binder and a method for producing the same. More specifically, the present invention relates to an exfoliating solid cleanser comprising a discontinuous hydrogel and a corn starch as a binder, In the form of a discontinuous hydrogel-powder complex, and the discontinuous hydrogel and the sticky corn starch derived from alginate and calcium sulfate act as a binder of powder particles such as diatomaceous earth, A solid cleanser and a method of manufacturing the same.

Cleanser means cleansing toiletries used to remove makeup, exfoliation or other contaminants on the skin, cleansing is used to remove make-up, as well as remove wastes from the skin and purify tired skin And removing unnecessary components from the skin and supplying the necessary moisture.

As the importance of cleansing has become increasingly important, various types of cleansing products and various cleansing procedures and methods have been proposed, and now, there have been proposed cleansing oils, cleansing creams, cleansing lotions, cleansing waters, cleansing gels, Cleansing products are available in the form of foam.

Soap is a typical detergent that has been used most often before the activation of cleansing products. It removes wastes from the skin by the action of alkalis, but changes the acidity of the skin to make it alkaline, dehydrating and degreasing, . For sensitive or dry skin, it is advisable to use mildly acidic soaps, and use of other cleansing products is recommended. In addition, the soap is always in contact with water and easily dismounted, and the feeling of use of the soap, which is worn out when used again, is discomforted. Especially, the soap which is used in public toilets has become a product that no one wants to use.

Cleansing products can not be cleansed at the same time, and it is troublesome to do double cleansing twice or three times.

Cleansing foam is a surfactant-type cleansing cosmetic product. It is a product that bubbles like a soap. It is a product that removes the disadvantages of soap such as skin pull and irritation. However, it requires double cleansing after wiping out the foam. The cleansing foam is mostly a tube-shaped product that is worn as much as you want, but it is not easy to squeeze out the last leftovers like toothpaste, and there is not a lot of discarded amount, which is very costly. In addition, when you open the tube cap, you often find that the contents are caught between them, twisting, or even blooming.

Cleansing oil is a combination of water and oil with a surfactant. It is easy to use after thickening with water. However, it may cause trouble to your skin for a long time. There is a risk of remaining waste. Cleansing oil is the most important ingredient of cleansing oil, so it is most commonly used to cleanse the color makeup which is difficult to cleanse with water. But it does not have basic cleansing function and needs double cleansing. It is liquid type and has low viscosity. It is inconvenient because it can flow down.

The cleansing cream is a cream -based product made mainly of lipophilic oil. It is suitable for cleansing the dark make-up like high-gloss makeup with high cleansing power without flowing. It is also possible to dissolve sebum and cosmetics of oil-like skin in cleansing cream It is wiped off, and the fat film on the surface of the skin is removed, but there is an inconvenience that it is necessary to double skin because there is a lot of oil.

Cleansing lotion is a hydrophilic milk type product. It does not require double cleansing but it is weak in washing power and requires careful and detailed cleansing.

In such circumstances, attempts have been made to make a cleansing product having a cleaning power that is sufficiently high that a double cleansing is unnecessary, as a solid product that can be easily used and molded into a single use.

Patent Document 1 (International Patent Publication No. WO 2000/78857, published on December 28, 2000) discloses a solid water-based gel containing a hydrophilic gelling agent and starch and a solid cosmetic product using the gel. . The above-mentioned solid water-based gel acts as a binder for powders such as starch and filler, but has a physical structure in which powder particles are finely dispersed in a continuous phase of the hydrogel.

Patent Document 2 (International Patent Publication No. WO 2013/175221, published on Nov. 31, 2013) discloses a composition comprising: (i) corn starch in an amount of about 20% to about 40%; (Ii) from about 20% to about 50% by weight of an extender; (Iii) a surfactant in an amount from about 5% to about 30%; And (iv) glycerin in an amount corresponding to from about 15% to about 30% is disclosed, thereby forming a mouldable, soft, putty-like dough. In Patent Document 2, the solid composition is prepared by using a gel and a mucus derived from corn starch to form a base material, and dispersing an extender (e.g., talc) and a surfactant to form a dough. do. The solid composition is dried and hard and can not easily be molded. To prevent this, glycerin is added. Since glycerin is generally not used to dry in water, it is known that a composition containing glycerin has a soft texture similar to dough.

Patent Document 3 discloses a powder form oil-free makeup cosmetic composition comprising diatomaceous earth and starch. When diatomaceous earth is used, it has been found that due to the amorphous nature of diatomite, The use of starch in combination with the diatomaceous earth described above can remarkably increase the feeling of use reduced by the use of the diatomaceous earth due to the morphological characteristics of the starch, It says that even if unused, uncoated powder is used, it is excellent in makeup persistence and can significantly reduce skin troubles.

Most of the solid detergents and solid cleansers developed so far contain a surfactant or powders that exhibit a cleaning effect in a continuous phase hydrogel, so that they are not rigid in shape and have low impact resistance. When they are in contact with hands or skin The feeling of use is low due to the unique touch of the hydrogel, and the continuous hydrogel is not easily disintegrated or disintegrated into water by rubbing or rubbing by hand.

Patent Document 4 (Korean Patent Laid-Open Publication No. 10-2015-0049522, published on Oct. 18, 2016) discloses a hydrophilic gelling agent (algin and calcium sulfate), a gelling retarder (magnesium oxide), an extender (diatomaceous earth) Corn starch), additives, and purified water. It is known that the amount of the hydrophilic gelling agent and the water that forms the hydrogel as compared to the powder is relatively less than the amount of the powder, so that the hydrogel is not the dispersion medium of the powder Suggesting that it acts as a binder.

However, according to Patent Document 4, a dough-shaped formulation is prepared by mixing a liquid component and a powder component, and the dough is molded to obtain a spherical solid-type cleanser. However, the dough is a hydrogel formed from a hydrophilic gelling agent and water The composition and the composition of the constituents must be uniform throughout, and therefore, the hydrogel (formed from the hydrophilic gelling agent and water) and the powder (the sticky starch And diatomaceous earth) must be kneaded very vigorously for a long period of time, resulting in a significant increase in the process cost. In addition, even if the continuous hydrogel is pulverized or broken to be made into a discontinuous hydrogel, that is, the continuous hydrogel containing the powder is crushed to produce a kneaded state in which the discontinuous hydrogel and the powder are mixed, The discontinuous hydrogel derived from the continuous hydrogel has a problem that the dough or the cleanser hardly has excellent impact resistance because the powder particles are weakly bonded or connected.

Accordingly, there is a growing need for a new type of solid cleanser that is easy to manufacture, economical, has excellent water resistance, impact resistance and external force disintegration and is free from problems in handling and use.

International Patent Publication No. WO 2000/78857 (published December 28, 2000) International Patent Publication No. WO 2013/175221 (Publication date 2013.11.28.) Korean Registered Patent No. 10-1383625 (Registered on Apr. 201, 2014) Korean Patent Publication No. 10-2015-0049522 (published October 20, 2016).

The inventors of the present invention have found that when a solid cleanser which can be molded into a solid dosage form for a single use and not requiring a double cleansing process is manufactured in a liquid or cream type but is excellent in water resistance and impact resistance, , Which is excellent in handleability of the product so as not to require special attention or additional cost in transportation, and is excellent in usability of the product because of excellent external force collapsibility such that it can function as a cleanser by simple operation such as rubbing or rubbing by hand In order to develop the research.

The present inventors have found that a solid raw material composition is prepared by mixing and homogenizing solid and powder raw materials such as hydrophilic gelling agents (algin, calcium sulfate), corn starch and diatomaceous earth, and mixing liquid and liquid raw materials such as water, oil and liquid additives And homogenizing the mixture to prepare a liquid raw material composition and kneading the liquid raw material composition at a weight ratio of 1: 0.2 to 1 to the solid raw material composition to obtain an externally disintegrating discontinuous phase hydrogel-powder composite excellent in water resistance and impact resistance And it can be advantageously applied as an externally-disintegrating solid cleanser, thus completing the present invention.

Disclosed is an externally disintegrating solid cleanser according to the present invention, which is excellent in water resistance and impact resistance, and is excellent in handling property and ease of use since it is formed as an externally disintegrating discontinuous phase hydrogel-powder composite. No need for double cleansing and deep cleansing to pores is possible.

FIG. 1A is a flow chart for explaining a manufacturing process of a discontinuous hydrogel-powder composite according to the present invention,
FIG. 1B is a flow chart for explaining a manufacturing process of a continuous hydrogel-powder composite according to the prior art,
FIG. 1C is a flow chart for explaining the manufacturing process of the (continuous phase + discontinuous phase) hydrogel-powder composite according to the prior art.
Figures 2a and 2b are schematic diagrams showing the construction of a discontinuous hydrogel-powder composite according to the present invention and a continuous hydrogel-powder complex according to the prior art, respectively.
3A is a photograph showing a state in which the external force disintegrating solid cleanser according to the present invention is manually shaped into a spherical shape of about 1.5 cm in diameter,
FIG. 3B is a photograph showing a shape change and an internal state of the external force-disintegrating solid cleanser according to the present invention after one week has passed in an opened container,
FIG. 3C is a photograph showing the shape change or destruction after the external force deflashable spherical solid cleanser according to the present invention is subjected to a drop test (1 m, once, concrete bottom)
FIG. 3D is a photograph showing the shape change or destruction after the disintegration test (room temperature, 10 minutes) of the exfoliating solid spherical cleanser according to the present invention in water.

A first object of the present invention is to provide an exfoliating solid cleanser using a discontinuous hydrogel and corn starch as a binder,

The external defibrillator solid cleanser comprises algin, calcium sulfate, magnesium oxide, diatomaceous earth, corn starch, surfactants, additives and water in the form of a discontinuous hydrogel-powder complex,

Wherein the alginate and calcium sulfate form a discontinuous hydrogel together with water to act as a binder of the powder particles and the corn starch is rendered into a sticky starch by water to act as a tackifier for the powder particles and the discontinuous hydrogel And sticky starch together with the powder particles form a three-dimensional structure having a network structure.

Wherein the alginate and calcium sulfate form a discontinuous hydrogel together with water to act as a binder of the powder particles and the corn starch is rendered into a sticky starch by water to act as a tackifier for the powder particles and the discontinuous hydrogel And tacky starch together with the powder particles form a discontinuous hydrogel-powder complex having a three-dimensional structure.

According to one embodiment of the present invention, the external force-disintegrating solid cleanser comprises 1 to 10 wt%, preferably 2 to 8 wt%, more preferably 3 to 5 wt%, calcium sulfate 1 to 10 wt% , Preferably 2 to 8 wt%, more preferably 3 to 5 wt%, magnesium oxide 0.3 to 3 wt%, preferably 0.4 to 2.5 wt%, more preferably 0.5 to 3 wt% By weight, preferably 8 to 20% by weight, more preferably 10 to 15% by weight, of corn starch, It is possible to include 5 to 20% by weight, preferably 7 to 18% by weight, more preferably 10 to 15% by weight of surfactant, 10 to 20% by weight of additives and residual water content in the form of discontinuous hydrogel- have.

According to another embodiment of the present invention, in the discontinuous hydrogel-powder composite, the liquid or liquid feedstock (e.g., water, liquid surfactant and liquid additive) may be mixed with a solid or powder feedstock (eg, algin, calcium sulfate, magnesium (Weight), preferably 0.1 to 0.75 times (weight), and more preferably 0.2 to 0.5 times (weight), based on the total weight of the polylactic acid , The water in the liquid or liquid feedstock may be present in the solid or powder feedstock in amounts of 1 to 10 times (weight), preferably 2 to 8 times (weight), more preferably 3 to 6 times (weight) ≪ / RTI >

According to a preferred embodiment of the present invention, the externally disintegrating solid cleanser has the following properties when it is spherical with a diameter of 1 to 3 cm:

- water resistance which does not disintegrate in water for at least 3 minutes, preferably at least 5 minutes, more preferably at least 10 minutes;

- Impact resistance which is not destroyed on the wood or plastic floor at least 10 times in the decarburization test at a height of 0.5 m or more, preferably 1 m or more, more preferably 1.5 m or more; And

Preferably 80% or less within 3 minutes, preferably within 2 minutes, more preferably within 1 minute, when applying a weak external force (i.e., an external force not breaking the spherical shape) such as rubbing or rubbing, The external disintegration ability to such an extent that it disintegrates.

A second object of the present invention is to provide a method for producing the external force-disenflective solid cleanser, comprising the steps of:

(Step 1) A raw material including algin, calcium sulfate, magnesium oxide, diatomaceous earth, corn starch, surfactant, additive and water is prepared and divided into solid and powder raw materials and liquid and liquid raw materials, ≪ / RTI > is selected from those having controlled particle size,

(Step 2) A solid raw material composition is prepared by mixing and / or homogenizing a hydrophilic gelling agent (algin, calcium sulfate), corn starch, diatomaceous earth, etc. as a solid / powder raw material, and preferably the solid raw material composition has a controlled particle size Crushed,

(Step 3) A liquid raw material composition is prepared by mixing and / or homogenizing water and a liquid additive as a liquid / liquid raw material (e.g., an emulsion, a dispersion, a suspension, etc.)

(Step 4) The liquid raw material composition is added to the solid raw material composition at a temperature of 10 to 50 占 폚 in a weight ratio of 1: 0.05 to 1: 1, preferably 1: 0.1 to 0.75: 1, 0.2 to 0.5 times (weight), to form a discontinuous hydrogel-powder composite,

(Step 5) molding the resulting discrete hydrogel-powder composite into any shape, preferably spherical, to obtain a solid cleanser,

(Step 6) In some cases, until the amount of water in the resulting solid cleanser is 5 to 25 wt%, preferably 5 to 20 wt%, more preferably 5 to 15 wt% of the solid cleanser, For example, at a temperature of 10 to 50 캜.

According to one embodiment of the present invention, the homogenization in the step 3 and the step 4 may be homogenization of the composition, homogenization of the particle size or homogenization of the composition and particle size, and the solid raw material composition is achieved by pulverization using a ball mill or the like And the liquid raw material composition can be achieved by stirring the liquid mixture or the like.

Hereinafter, the present invention will be described in more detail.

As used herein, the term " gelling agent "refers to a compound that, in the presence of a solvent (dispersion medium), forms a large or small strong macromolecular linkage and thus induces a three dimensional network in which the solvent (dispersion medium) Quot; hydrophilic gelling agent "means a gelling agent capable of easily dissolving or dispersing in water to form a hydrogel.

As used herein, the term " hydrogel " (hydrogel) means a gel comprising water as a dispersion medium, and can generally be formed from a hydrophilic gelling agent and water.

In this specification, the term " hydrogel-powder composite " refers to a form in which a hydrogel forms a three-dimensional structure of powder particles by physically and chemically connecting powder particles. The fact that the powder particles are present in the hydrogel continuous phase medium while the hydrogel-powder forms a constant three-dimensional structure is referred to as a continuous phase hydrogel-powder complex, and the powder particles are connected by hydrogel discontinuous phase particles, Particle-powder particle-hydrogel particle-powder particle can be referred to as a discontinuous phase hydrogel-powder complex. The proportion of the powder particles may be partially contained in the discontinuous phase particles of the hydrogel. The ratio is not particularly limited, but is generally within 30%, preferably within 20%, more preferably within 10% Is good.

In one preferred embodiment of the present invention, some of the powder particles are tacky starch particles, and tacky starch particles are homogeneously distributed among the powder particles to improve the binding force of the three-dimensional structure.

As used herein, the term " binder " refers to a substance used to bind powdered cosmetic ingredients together, or a substance that provides tackiness after compression or compression after compression in the form of a tablet or cake, Thus, the hydrogel means that powder particles are bonded to each other.

As used herein, the term 'adhesive starch' means that the surface of the starch particles is gelatinized by water to form a mucus, thereby exhibiting stickiness. In the present invention, the sticky starch is a powdery particle It is also acting as a bonding agent to connect the two.

In this specification, the term "external force-disintegratable" refers to disintegration due to external forces such as frictional forces such as rubbing or rubbing with hands or physical forces such as pressing and striking from above, Water resistance and physical durability.

As used herein, the term " starch " may refer to a polysaccharide composed of glucose (glucose), and in general, the starch particles may have different sizes and shapes depending on the type of plant.

In this specification, the term 'diatomaceous earth' may refer to soft rocks and soils made of diatomaceous earth which is mainly amorphous amorphous silicate, The specification may mean a product made by using the rock and the soil as a powder type cosmetic composition through a process such as filtration and purification.

As used herein, the term " powder " may refer to a fine powder, usually a cosmetic powder. Thus, the term "powder type" as used herein may mean processed in the form of fine powder or cosmetic powder.

As used herein, the term "grain size classification" may refer to a measure of the size of a particle and its distribution, And the particle size is defined by the size and the average particle diameter.

In this specification, the term 'oil absorption' may mean a factor indicating the performance of a powder such as a pigment or an extender. The amount of oil required to knead the powder with the oil to form a hard kneaded state. This is referred to as a first oil absorption amount, and the amount of oil required to be in a state of being able to be painted in a full color is referred to as a second oil absorption amount. Expressed in g of oil per 100 g of powder. The oil absorption increases as the particle size of the powder becomes smaller and the surface becomes rougher.

(1) hydrogel and hydrophilic gelling agent

According to the present invention, the hydrogel is formed from sodium alginate (algin or sodium alginate), which is a hydrophilic gelling agent, and calcium sulfate.

Sodium alginate can not form a gel before a cross-linking agent (e.g., calcium sulfate) containing a cross-linking ion (e.g., calcium ion) is added to the gel-forming system. The crosslinking of the alginate is preferably carried out using a crosslinking agent containing a cation selected from Ca ²⁺ , Mg ²⁺ , Sr ²⁺ and Ba ²⁺ , and alginate: crosslinking agent may be used at a weight ratio of 1: 0.1-3.

In addition, sodium polyphosphate (e.g., sodium tripolyphosphate) may be further added to the gel-forming system to control the function of the crosslinking agent.

According to one variant of the present invention, the hydrophilic gelling agent may further comprise or be replaced by a polysaccharide, a protein derivative, a synthetic or semi-synthetic gel of the polyester type, polyacrylates or polymethacrylates and derivatives thereof have. Of the polysaccharides, mention may be made of the following:

Algae extracts such as agar, caragenin (iota, kappa, lambda carrageenin) and alginates, especially sodium alginate or calcium alginate;

- xanthan gum and its derivatives, such as those sold under the trade name "Rheosan" (Rhodia Chimie), and exudates of microorganisms such as gellan;

- fruit extracts such as pectin;

Gelling agents of animal origin, such as protein derivatives, especially bovine or fish gelatin, and caseinates;

Polysaccharides containing side chains and six neutral saccharides, as disclosed in document FR-A-2 759 377;

- and a mixture of said water.

In the present invention, the hydrophilic gelling agent selected from the above-mentioned polysaccharides may be replaced by 1 to 20% by weight of the sodium alginate or may further contain the hydrophilic gelling agent, thereby improving the physical properties of the hydrogel.

(2) corn starch and tacky starch

In the present invention, the term " corn starch " means starch of corn (also known as Meizu) [Zea mays] grains and is obtained from endosperm oil centered on the inner lobes of corn. Corn starch is also known in some countries as corn flour or maize starch. Corn starch should not be confused with cornmeal. Cornmill is a coarse powder, dried meats or corn. In the UK corn starch is known as corn powder. Corn starch is mainly used in food and is used as a thickener in sauces and custards. In cosmetics, it is mainly used as talcum powder for babies.

According to a preferred embodiment of the present invention, the solid cleanser according to the present invention may comprise corn starch which exhibits the following properties:

(a) Particle size: 3-10 탆;

(b) Oil absorption: 0.7-1.3 cc / g; And

(c) Specific surface area: 30.0-50.0 m ² / g.

Corn starch is a very long-established, proven material used in cosmetics and foodstuffs, providing a foundation that can be made into a solid form, including surfactants that wash hair and hair. The sticky, thickening effect of corn starch allows it to be retained in the composition including other ingredients. In addition, the softness of corn starch and its ability to help absorb moisture in the skin is a key feature. Although not theoretically clear, in the composition according to the present invention, corn starch is considered to be gelatinized by water to form a gel or mucilage, which provides tackiness. This allows the system to act as a binder to bind the other components. In use, upon contact with water, the corn starch of the composition is diluted and a cloudy solution is provided to soften the skin.

In addition, the tacky starch is hydrolyzed to form a mucilage, thereby enhancing the binding force between the powder particles to inhibit hydration (dehydration) of the hydrogel, or to capture water that has been dehydrated (dehydrated) to maintain the moisture of the entire composition can do. Corn starch is known to be superior in adhesion to other starches.

Generally, starch or starch derivatives are macromolecules in the form of polymers composed of a basic moiety that is an anhydroglucose (glucose) unit, and amylose (straight chain polymer) and amylopectin (branched polymer) are distinguished depending on the number of the base and the aggregates thereof . The relative proportions and degrees of polymerization of amylose and amylopectin vary depending on the botanical origin.

The botanical origin of the starch may be cereal or tuberous plants, such as natural (i.e., unmodified) starches such as corn starch, rice starch, cassava starch, potato starch, wheat starch, Modified starch. Modified starches include, but are not limited to, pre-cooked starches, hydrolyzed starches, cross-linked starches (e.g., methylol urea derivatives or octenyl succinic anhydrides or starches crosslinked with epichlorohydrin), esterified starches, For example starch grafted in the presence of acid, starch baked in the presence of acid, or grafted starch, such as starch grafted with sodium polyacrylate, coated starch, e.g., amino acid Starch and / or mixtures thereof may be mentioned.

Starch is generally in the form of a white powder, which is insoluble in cold water and has a basic particle size of 3 to 100 microns, which, when heated, is gelled to form a sticky or gel.

As commonly used starches or modified starches, the following may be mentioned:

Modified starch (amylopectin / amylose cross-linked with epichlorohydrin) marketed under the trade name 'Amidon de riz insoluble non mucilagineux [non-mucilaginous insolubel rice starch]' (Remy)

- natural waxy corn starch (essential amylopectin) marketed under the trade name 'Waxy Corn' (Blattmann)

- modified and pre-cooked wheat starch marketed under the trade name 'Midsol Krisp' (Midwest Grain Products)

- modified and refined wheat starches marketed under the trade name 'Midsol Adhere' (Midwest Grain Products)

- Modified wheat starch powder sold under the trade name 'Midsol 35' (Midwest Grain Products)

- Modified potato starch marketed under the trade name 'Perfectagel MPT' (Avebe)

- product 'Amidon de mais B [corn starch B]' (marketed by Roquette Freres), product 'Corn starch' (marketed by National Starch).

Generally, the mucus derived from the starch gelification is excellent in moisturizing properties and helps the skin. Starch ingredients are a type of ingredient that can be used in children's products because they are useful, mild, and effective as cosmetics. When the solid cleanser according to the present invention is soaked in water and disintegrated by applying a small external force such as rubbing or rubbing with the palm of the hand, the elasticity and stickiness of the gel component may give an uncomfortable feeling to the palm, Gives a soft feeling to the palm. While glycerin softens the texture of the composition, corn starch causes softness in the feel of the palm.

In the present invention, hydrophilic gelling agents (e.g., sodium alginate and calcium sulfate) act as binders to bind powder particles or the like by forming aqueous gels or hydrogels in the presence of water, and starch or starch derivatives act as binders To form a mucus, which acts as an adhesive adhesive for other powder particles and constituents.

(3) Diatomaceous earth and extender

Diatomaceous earth (diatomaceous earth) is a kind of fossil soil that is a collection of debris of a single-celled plant deposited on the seabed and bottom of the lake. The diatomaceous sedimentary rock formed by sedimentation of the diatomaceous skeleton by hardening of the diatomite sediments is composed mainly of hydrated amorphous silica and the particle size is 3-10 탆, an oil absorption of 1.8-2.5 cc / g, and a specific surface area of 40.0-60.0 m ² / g. It has similar characteristics to ordinary mineral silica, but diatomaceous earth is a mixture of various shapes such as plate, needle, and spherical types, while mineral silica has a spherical shape. As a result, the spreadability is relatively low, but the skin sticking property is maintained while maintaining the ability to keep breathing, and the dusting of the powder is alleviated.

In the present invention, diatomaceous earth is used as an oil absorbing extender. The term "extender" generally refers to a substance that contributes to the mass and form of a solid cosmetic composition, and is generally powdery (particulate) or particulate, inert, and mostly insoluble in water. Preferably, the extender is selected from inert particulate matter insoluble in water, such as talc (talc), natural rock such as diatomaceous earth, clay, bentonite, or inorganic metal oxides such as silica, titania, zirconia and the like. The term " inert " means a material that is not active for cosmetics, as recognized by those skilled in the art, and the term " particulate " or powder, as recognized by those skilled in the art, Insoluble " means that the solubility of the substance in water at 35 캜 is less than 1 g / 100 mL, for example less than 0.5 g / 100 mL, for example less than 0.1 g / 100 mL, for example less than 0.05 g / 100 mL, 0.02 g / 100 mL.

Generally, it is preferable that the extender has a particle size not to roughen the solid cosmetic composition. For example, the extender has an average particle size of 5 탆 or less, specifically 4 탆 or less, preferably 2 탆 or less, more preferably 1 Mu m or less. The average particle size can be measured according to ISO standard 9276-5 (Representation of results of particle size analysis).

In the present invention, by using a diatomaceous earth excellent in absorbency as an extender, the resulting solid cosmetic can exhibit excellent properties as a cleanser.

According to one embodiment of the present invention, in addition to the diatomite, there may be used at least one selected from the group consisting of talc, kaolin, sericite, boron nitride, nylon powder, silica, polymethylmethacrylate, synthetic fluorofluorophosphate, urethane, boron nitride, , A substance selected from the group consisting of bentonite, small spheres of acrylic resin, titanium dioxide, iron oxide, ultramarine, tungsten, carbon black, zinc oxide, chromium oxide, chromium hydroxide, alumina, calcium silicate, calcium carbonate and combinations thereof can do. Of these, inorganic materials such as talc and bentonite, which have high oil absorbing ability, can be selected. The amount of these added is not particularly limited, but may be selected in an amount of up to 50% by weight of the diatomaceous earth, and preferably in an amount of 10 to 40% by weight.

(4) Surfactants

The solid cleanser of the present invention is one of cleaning cosmetics, and includes a liquid or solid surfactant. Surfactants are mainly selected from surfactants known in the art to be suitable for application to the skin or hair.

In accordance with the present invention there is provided a composition comprising as a surfactant sodium laureth sulfate, cocamidopropyl betaine, cocamide DEA, PEG-7 glyceryl cocoate, sodium lauryl sulfate cocamide diethanolamine for example, cocamide diethanolamine, lauryl betaine, sodium lauroyl sarcosinate, and mixtures thereof.

In general, surfactants include anionic surfactants (eg, soaps, alkylbenzenesulfonates, etc.), cationic surfactants (eg, higher amine halides, quaternary ammonium salts, alkylpyridinium salts, etc.) Active agents (amino acids, betaine-based surfactants) and nonionic surfactants (such as PEG).

(5) Additives

The solid cleanser according to the present invention can be used as an additive which can be used as an additive such as polyhydric alcohol, natural extract, oil component, fragrance, colorant, ultraviolet absorber, skin conditioner, surfactant, wetting agent, pH adjuster, chelating agent, preservative, charcoal powder, phosphatidylcholine, Caffeine, and vitamins. ≪ Desc / Clms Page number 7 >

The polyhydric alcohol is added in order to impart flowability to the hydrogel to improve the adhesion with other components or to prevent the mixture from being dried and hard and not easily molded. Such polyhydric alcohols have a soft texture similar to dough and inhibit drying, so that when they are used in an excessively small amount, water vaporization may occur, which may increase the possibility that the surface of the polyhydric alcohol is hard, and dispersion of the gelling polymer If it is used too much, the viscosity increases excessively and there is an uneconomical problem due to an increase in raw material unit price. The polyhydric alcohol may be selected from the group consisting of glycerin, ethylene glycol, propylene glycol, dipropylene glycol, 1,3-butylene glycol, sorbitol and xylitol.

In particular, glycerol is the most commonly found moisturizing ingredient in cosmetics, and has two moisturizing effects that simultaneously attract moisture (humectant) and prevent water evaporation at the same time (emollient). Glycerin can be used in creams and propylene glycol and butylene glycol components, which are humectant components of glycerin, such as glycerin, can be used in products for a feeling of fresh feeling because they can feel a somewhat sticky or heavy feel.

The natural extract may be selected from the group consisting of aloe, green tea, cinnabar, aloe vera leaf, licorice, peppermint, ginseng, red ginseng, pearl, wood vinegar, pine needles, ginkgo leaf, propolis, mulberry leaf, silkworm, Caffeine, spirulina, salmon roe, giant kelp, packing, macheins, parasitoids, acerola, chlorella, mangosteen, guava, coriander, carrot, caffeine, squalane, caviar, broccoli, blueberry, One or more species selected from the group consisting of mulberry tree roots, raspberry, raspberries, tops, mulberry, edelweiss, chamomile, lavender, peppermint, eucalyptus, lemon balm, oregano, tea tree, May be derived from the material.

The skin active ingredient includes cosmetic ingredients having effects such as wrinkle improvement, skin whitening, ultraviolet ray blocking, anti-aging, anti-aging, moisture supply and elasticity enhancement to the skin, and drugs for prevention and treatment of skin diseases. Is not particularly limited as long as it is an ingredient capable of providing effects. The active ingredient of the skin is at least one selected from the group consisting of retinol, retinyl palmitate, retinyl acetate, retinoic acid, coenzyme Q10, elastin, collagen, hyaluronic acid, ceramide, collagen, caffeine, chitosan, ascorbic acid, ascorbyl glucoside, , Tocopherol acetate, arbutin, niacinamide, adenosine, retinol acetate, vitamins A, D, E, and natural extracts.

The oil component may be selected from the group consisting of jasmine oil, lavender oil, mineral oil and ylang ylang flower oil.

The pH adjusting agent may be selected from the group consisting of citric acid and tetrasodium pyrophosphate.

The preservative may be selected from the group consisting of methyl chloroisothiazolinone, methyl isothiazolinone, and sodium benzoate. However, in recent years, methylchloroisothiazolinone and methylisothiazolinone have been exposed to harmful effects on the human body, so that use thereof may be avoided.

The preservative may be selected from the group consisting of methyl paraben, phenoxyethanol, capryl glycols, paraoxybenzoic acid alkyl esters, parabens, pentanediol, ethylhexylglycerin, 1,2-hexanediol, caprylglycol tropolone, 3-trifluoromethyl-4,4'-dichlorocarbabanilide, and 2,4,4'-trichloro-2-hydroxydiphenyl ether.

According to one preferred embodiment of the present invention, natural cosmetic ingredients can be included. Examples of the moisturizing ingredient include jojoba oil, glycerol, tocopherol (vitamin E), ascorbic acid (vitamin C), hyaluronic acid and the like (Vitamin C) and the like as the anti-aging component, and may contain, for example, rose floral water, olive oil, Olive oil wax, aloe vera, acacia collagen and the like, and may include, as an essential oil, rosemary oil, lavender oil, basil oil and the like.

(6) Continuous-phase hydrogel and discontinuous phase hydrogel

Hydrogels or aqueous gels formed from hydrophilic gelling agents have been used in many cosmetics.

In the prior art, as the hydrogel is formed into a continuous phase, the powder particles and liquid components are contained within the hydrogel, the physical form and mechanical structure of the resulting hydrogel-powder complex being governed by the strength of the continuous hydrogel. This form can be referred to as "continuous hydrogel-powder complex ".

In the present invention, as the hydrogel is formed into a small-sized discrete phase, the liquid components are contained in the hydrogel, but the powder particles are bound, adhered, or connected by the discontinuous hydrogel. The physical form of the resulting hydrogel- The mechanical structure is governed by the cohesion or cohesion of the discontinuous hydrogel. This form can be referred to as "discontinuous hydrogel-powder complex ".

The prior art "continuous hydrogel-powder complex" refers to a process in which a hydrophilic gelling agent and other powder and / or liquid ingredients are added sequentially or together in excess of water to produce a gelled composition and then gelled to form a powder in the continuous phase of the hydrogel And / or liquid components.

The "discontinuous hydrogel-powder complex" of the present invention is prepared by adding a liquid raw material containing a relatively small amount of water to a homogenized solid raw material to prepare a gelled composition and then gelling the hydrogel discontinuous phase to bind the powder particles.

Even though the prior art "continuous hydrogel-powder composite" is transformed into a "discontinuous hydrogel-powder composite" by mechanical means (mixing, kneading, kneading, etc.), the discontinuous hydrogel derived from the continuous- It is difficult or impossible to obtain a "discontinuous hydrogel-powder composite" as intended in the present invention, since powdered particles can not be bonded again due to the absence or weakness of the particles.

Therefore, in the step of gelling the gelled composition, it is important that the hydrophilic gelling agent and water form a discontinuous hydrogel, so that the hydrophilic gelling agent and the water have a binding force between the powder particles. In the present invention, the solid raw material composition and the liquid raw material composition are separately formed , They are homogenized and then mixed to make the hydrophilic gelling agent and water form a discontinuous hydrogel.

The reason why the formation of the "continuous-phase hydrogel-powder complex" and / or the "discontinuous hydrogel-powder complex" in the gelling step of the gelled composition greatly affects the physical properties of the solid cleanser, When the gel is pulverized or broken into discrete phase hydrogels, that is, when the continuous phase hydrogel containing the powder is crushed to convert into a kneaded state in which the discontinuous phase hydrogel and the powder are mixed, The discontinuous hydrogel is weakened in adhesion and / or bonding force, so that the physical bonding strength of the powder particles is lowered, and as a result, water resistance, impact resistance and external force disintegration and the like in the resulting dough and solid cleanser are also lowered.

According to one feature of the present invention, the discontinuous hydrogel in the discontinuous hydrogel-powder composite can be selected to have a maximum diameter of generally 200 μm or less, preferably 100 μm or less, more preferably 50 μm or less But they are not particularly limited thereto. If the maximum diameter of the discontinuous hydrogel is larger than the above range, there is a high possibility that powder particles are contained in the discontinuous hydrogel, which may lower the feeling of use.

(7) homogenization of the raw material mixture

According to the present invention, before the gelled composition is prepared by mixing the powder raw material and the liquid raw material, the raw materials are classified into solid or powder raw materials and liquid or liquid raw materials, and the solid and powder raw materials are mixed together and homogenized to prepare a solid raw material composition Mixing and homogenizing the liquid and liquid raw materials together to obtain a liquid raw material composition, and then adding and kneading the liquid raw material composition by dropwise addition, spraying, small amount of pouring, etc. while stirring the solid raw material composition, And is produced in the form of dough. Also in the present invention, by using a relatively small amount of water, the gelled composition can be made into a kneaded form, and the gelation of the gelled composition can be delayed to some extent until the gelled composition is kneaded and kneaded using the gelled composition .

According to Patent Document 4, which is a prior art filed by the present inventor, a powder material such as a hydrophilic gelling agent, a gelling retarder, a starch, a surfactant, an additive, diatomaceous earth and water and a liquid raw material are simply mixed and gelled to form a hydrogel- In the preparation of the powder composite, the first feature is to make the hydrogel-powder complex into a dough form by using a relatively small amount of water, and the second feature is to use a gelling retardant such as magnesium oxide to mix the water and the gelling agent To prevent gelation at the same time, thereby securing a mixing time to some extent. However, in the method of Patent Document 4, since the powder raw material and the liquid raw material are simply mixed and gelled in the mixing step, the kneading (paste) must be homogeneously kneaded in the kneading step, so that a high kneading speed and a long kneading time are required And a gelling retarder is used for securing the kneading time. For more homogeneous kneading, a stronger kneading speed requires more kneading time. However, in order to achieve a stronger kneading speed, there is a problem that the kneading cost is rapidly increased. In order to further increase the kneading time, the addition amount of the gelling retardant must be increased but the delay time is limited. A problem of a vicious circle arises that the physical properties of the composite are further deteriorated as many gelling retardants are added. Due to these problems, it is inevitable that the method of Patent Document 4 has a disadvantage in that a considerable amount of "continuous hydrogel-powder composite" is formed after gelation, and the resultant solid cleanser is unsatisfactory in physical properties.

Comparing the method of the present invention with the method of Patent Document 4, there is no step of mixing and homogenizing the powder materials together in the method of Patent Document 4, and the powder material and the liquid material are separately mixed to form the powder material mixture and the liquid material composition Homogeneous kneading of the powder / powder components and homogenous kneading of the solid / liquid components must be simultaneously achieved in the kneading step of the gelled composition, whereas in the present invention, the solid or powder raw materials are preliminarily homogenized And that the water and the liquid raw materials are homogeneously mixed in advance in the liquid raw material composition so that only the homogeneous kneading of solid / liquid ingredients is sufficient in the kneading step of the gelled composition.

In the present invention, homogenization means homogenization of the composition of the mixture and / or uniformity of the particle size of the powders.

Homogenization of the composition can be achieved by mixing, stirring and / or kneading. For example, the solid raw material composition includes solid raw materials and / or powder raw materials having various particle sizes and shapes, which can be homogenized in the whole mixture by stirring or kneading, and the liquid raw material composition can be used as water, oil, Liquid extract, and the like. These may be stirred to form an emulsion (dispersion), a dispersion, a suspension, or a mixture thereof to achieve homogenization of the composition.

The uniformity of the particle size of the solid raw material and the powder particles can be attained by pulverization using a ball mill or the like. For example, starch and diatomaceous earth usually use commercial products having an average particle size of about several micrometers to several tens of micrometers, while solid additives such as pigments and solid surfactants are commercially available in granular form with an average particle size of more than a few hundred micrometers . If the particle size difference between the solid raw material and the powder particles is large, there is a high possibility that the composition is heterogeneous and the gelation of the gelation composition may occur heterogeneously. Accordingly, the solid raw material and the powder particles can be ground to an appropriate particle size using a ball mill or the like to achieve uniform particle size.

According to one preferred embodiment of the present invention, the powder particles may have a 'coccoid, spherical' or round ball shape, and a pulverization or homogenization method may be selected to have such a shape.

(8) externally disintegrating solid cleanser

The external force-disintegrating solid cleanser according to the present invention comprises 1 to 10% by weight, preferably 2 to 8% by weight, more preferably 3 to 5% by weight, and calcium sulfate 1 to 10% by weight, More preferably 3 to 5 wt%, and magnesium oxide 0.3 to 3 wt%, preferably 0.4 to 2.5 wt%, more preferably 0.5 to 3 wt%, and diatomaceous earth 30 to 60 wt% More preferably 40 to 50 wt%, corn starch 6 to 25 wt%, preferably 8 to 20 wt%, more preferably 10 to 15 wt%, surfactant 5 to 20 wt% %, Preferably from 7 to 18 wt.%, More preferably from 10 to 15 wt.%, From 10 to 20 wt.% Of the additive and from the balance of water (or balance) in the form of a discontinuous hydrogel- .

In an externally disintegrable solid cleanser according to the present invention, the liquid or liquid feedstock (e.g. water, liquid surfactant and liquid additive) may be a solid or a powdered raw material (eg, algin, calcium sulfate, magnesium oxide, diatomaceous earth, corn starch, (Weight), preferably 0.1 to 0.75 times (weight), more preferably 0.2 to 0.5 times (weight) of the surfactant and the solid additive. Alternatively, the water in the liquid or liquid feedstock may be present in the solid or powder feedstock in an amount of from 1 to 10 times (weight), preferably from 2 to 8 times (weight), more preferably from 3 to 6 times ). ≪ / RTI >

The water, which occupies most of the liquid or liquid raw material, combines with the hydrophilic gelling agent to form a hydrogel, combine with corn starch to form tacky corn starch, and combine with powder such as diatomaceous earth to wet them. If the amount of water is less than 0.05 times (weight) of the solid or powder raw material, a part of the hydrogel-powder composite may not be converted into powder, or the powder may not be wetted, so that the impact resistance and the external force disintegration property may be deteriorated. If the amount of water is more than 1 time (weight) of the solid or powder raw material, the possibility of forming a continuous hydrogel becomes high, and the kneading process for producing the discontinuous hydrogel-powder composite is expensive, And the feeling of use and external force disintegration of the resulting solid cleanser may be deteriorated. In addition, although water can be removed through the drying process, if the drying rate is slow, the process cost is required. If the drying rate is high, the water of the hydrogel is first removed and the hydrogel is pulverized and the hydrogel- There is a concern.

The external force-disintegrating solid cleanser according to the present invention has the following physical properties when it is spherical with a diameter of 1 to 3 cm:

- water resistance such that the surface is not broken or disintegrated even after 3 minutes or more, preferably 5 minutes or more, more preferably 10 minutes or more, in water;

- Impact resistance not less than 5 to 10 times the height of 0.5 m or more, preferably 1 m or more, more preferably 1.5 m or more, on a wooden floor or a concrete floor; And

Preferably 90% or less within 3 minutes, preferably within 2 minutes, more preferably within 1 minute, when applying a weak external force (i.e., an external force not breaking the spherical shape) such as rubbing or rubbing, The external disintegration ability to such an extent that it disintegrates.

With respect to the above water resistance test, the exfoliating solid cleanser according to the present invention has a specific gravity smaller than that of water and varies depending on the constituent components, but it can be exposed to water in an amount of about 10 to 20% without being completely immersed in water. When the water resistance is tested in such a state, there is no damage or deformation to the appearance within the time, and when the product is taken out from the water and dried naturally within the time, it can not be distinguished from the original product.

With respect to the impact resistance, the drop test may be carried out on a floor made of wood, plastic, cement, stone and metal, preferably on a wooden or plastic floor, which is often used as an interior flooring material. The impact resistance test may be performed by estimating the number or proportion of spherical solid cleansers broken or deformed by performing a drop test in a state where a commercially available transparent plastic container is filled with a spherical cleanser of a certain number or more.

Regarding the external force disintegration property, if a bead type solid cleanser having a diameter of 1 to 3 cm is inserted between palms soaked with water and rubbed or rubbed, most of the beads are easily disintegrated but if the diameter is reduced to about 0.3 to 0.5 cm or less, Or rubbing does not occur. Taking this into consideration, the time until about 80% or more, preferably about 90% or more, and more preferably about 95% or more of the spherical solid cleanser is disintegrated is measured. The above-mentioned external disintegration property of 80% or more means non-destructive external disintegration property. When the solid cleanser is crushed or pressed by the palm of the hand, it can be disintegrated more quickly by rubbing or rubbing with the palm and applying external force such as maraging force.

The external force disintegration property of the solid cleanser is not a disintegration property due to the wetting of water or oil but a disintegration property due to an external force such as frictional force such as rubbing or rubbing with hands or physical force The test items selected by the present applicant.

In the solid cleanser according to the present invention, the use of diatomaceous earth and starch has another advantage of being able to eliminate the oil that can cause troubles and irritation in sensitive skin to the utmost. Amorphous diatomaceous earth and corn starch are used to provide soft cuts while preventing skin puckering due to sebum absorption and improving sebum removal ability and cleansing ability of the cleanser based on the continuous sebum control ability.

Hereinafter, the present invention will be described in more detail with reference to Examples. It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not to be construed as limiting the scope of the present invention. It will be self-evident.

Example 1

An externally disintegrating solid cleanser was prepared as follows.

(Step 1) Preparation of raw materials

As shown in Table 1 below, raw materials for an external force-disintegrating solid cleanser were prepared.

division ingredient Example 1
(weight%) Example 2
(weight%) Example 3
( weight% ) One Algin 2.0 1.60 1.80 2 Calcium sulfate 2.0 1.60 1.80 3 Magnesium oxide 0.8 0.90 0.70 4 Corn starch 10.0 12.00 10.00 5 Glucose 10.0 12.00 9.00 6 Diatomaceous earth 45.0 40.00 48.00 7 Sodium laureth sulfate 2.5 10.00 9.00 8 Cocamidopropyl betaine 2.5 2.50 3.00 9 PEG-7 glyceryl cocoate 2.5 0.90 0.80 10 Tetrasodium pyrophosphate 1.0 1.00 0.50 11 Disodium EDTA 0.1 0.05 0.05 12 Citric acid 0.1 0.10 0.10 13 Ascorbic acid 0.5 0.50 0.30 14 Tocopheryl acetate 0.5 0.30 0.20 15 Sodium chloride 0.3 0.30 0.30 16 Benzophenone-9 - 0.03 0.03 17 Sodium benzoate - << 0.01 << 0.01 18 Charcoal powder - 0.30 0.20 19 Red iron oxide (CI77491) - << 0.01 << 0.01 20 Ultra Marine Blue (CI77007) - << 0.01 << 0.01 21 Chrome Hydroxide Green - << 0.01 << 0.01 22 Purified water Balance Balance Balance 23 Cocamide diethanolamide 2.5 2.00 1.00 24 glycerin 1.5 1.50 2.00 25 Lavender Oil 0.2 0.15 0.15 26 Green tea extract - 0.40 0.30 27 Aloe Beta leaf extract - 0.30 0.20 28 Peppermint extract - 0.30 0.30 29 Hydrolized Collagen - 0.30 0.20 30 Spices - << 0.01 << 0.01 Sum 100 100 100

(Step 2) In the raw materials in Table 1, diatomaceous earth, a hydrophilic gelling agent (calcium sulfate, algin), corn starch, glucose, solid surfactants, oxides and salts (magnesium oxide, sodium chloride, disodium EDTA, tetrasodium pyrophosphate ), Ascorbic acid, and tocopheryl acetate were introduced into a powder mixer and pulverized at an average particle size of 500 mu m or less at room temperature to prepare a solid raw material composition.

(Step 3) The liquid / liquid raw materials such as water (purified water), glycerin, liquid surfactant (cocamide diethanolamide), oil-based raw materials (lavender oil, etc.) And the mixture was finely dispersed under heating and stirring at 50 DEG C to prepare a liquid raw material composition.

(Step 4) While the solid raw material composition obtained in the step 2 is stirred, the liquid raw material composition is added in small increments for 10 minutes in the step 3, and then stirred for 1 hour to obtain a discontinuous hydrogel- / RTI &gt;

(Step 5) The discontinuous hydrogel-powder composite formed in (step 4) was manually shaped into beads of 1 to 3 cm in diameter.

(Step 6) A bead-shaped solid cleanser formed in (step 5) was dried until the water content reached approximately 10%.

The resulting bead type solid cleanser exhibited the following properties:

(i) water resistance such that the surface is not broken or disintegrated even after 5 minutes in water;

(ii) impact resistance not to be destroyed by 10 times of dropping test on the floor at the height of 1 m and 5 times of drop test on the cement floor;

(iii) an external force disintegration such that 80% or more of the disintegrant is disintegrated within 1 minute when applied with a weak external force such as rubbing or rubbing after wetting with water or water (i.e., an external force not breaking the spherical shape).

Examples 2 and 3

A solid cosmetic composition was prepared in the same manner as in Example 1 except that the raw materials listed in Table 1 were used and the drying step was not carried out.

The resulting bead type solid cleanser exhibited the following properties.

(i) water resistance that does not disintegrate after 5 minutes in water;

(ii) impact resistance not to be destroyed by 10 times of dropping test on the floor at the height of 1 m and 5 times of drop test on the cement floor;

(iii) an external force disintegration such that 80% or more of the disintegrant is disintegrated within 1 minute when applied with a weak external force such as rubbing or rubbing after wetting with water or water (i.e., an external force not breaking the spherical shape).

Comparative Example 1 (Production of solid cleanser according to Example 1 of Patent Document 4)

A solid cleanser was prepared according to the post-processing method estimated based on the method described in Example 1 of Patent Document 4.

A solid cleanser was prepared by mixing and kneading the solid raw materials and the liquid raw materials described in Table 1 (Example 2) to prepare a dough-like hydrogel-powder composite and molding it into beads having a diameter of 1 to 2 cm.

The resultant bead-shaped solid cleanser was able to visually confirm the presence of a small-lump-shaped hydrogel (i.e., a continuous hydrogel) therein, and a powder not wetted or bonded at the time of disintegration occurred in powder form, The overall composition was not homogeneous and did not exhibit the water resistance, impact resistance and external force disintegration required for the solid compact.

Comparative Example 2

The procedure of Example 2 was repeated but an additional amount of water was used in an amount similar to the total weight of the powder raw material used and some of the resulting bead type solid cleanser had a moisture content in the dryer maintained at a temperature of 40-50 C Was dried until approximately 10-15%, and the other part was dried at room temperature under reduced pressure until the moisture content was approximately 10-15%.

Due to the difference in drying speed between the inside and outside of the bead type solid cleanser, the resulting bead type solid cleanser surface was pulverized and damaged in its appearance, and a small, lumpy continuous hydrogel was visually confirmed inside .

The resultant solid cleanser was difficult to use due to surface powdering and internal continuous hydrogel, and it was difficult to measure physical properties (water resistance, impact resistance, and external force disintegration) as a solid cleanser.

Claims (10)

A process for producing an exfoliating solid cleanser which contains algin, calcium sulfate, magnesium oxide, diatomaceous earth, corn starch, surfactants, additives and water in the form of a discontinuous hydrogel-powder complex,
Comprising the steps of:
(Step 1) A raw material including algin, calcium sulfate, magnesium oxide, diatomaceous earth, corn starch, a surfactant, an additive and water is prepared,
(Step 2) A solid raw material composition is prepared by mixing and homogenizing the solid / powder raw materials among the raw materials of the step 1,
(Step 3) Mixing and homogenizing liquid / liquid raw materials among the raw materials of step 1 to prepare a liquid raw material composition,
(Step 4) To the solid raw material composition obtained in the step 2, the liquid raw material composition obtained in the step 3 is added and kneaded at a ratio of 1: 0.05-1 times (weight) to obtain a discontinuous hydrogel-powder composite and,
(Step 5) molding the discontinuous hydrogel-powder composite obtained in step 4 to obtain a solid cleanser;
The above-mentioned corn starch acts as a pressure-sensitive adhesive for the above-mentioned powder particles and is gelled as water-soluble tacky starch by the formation of the discontinuous phase hydrogels together with water, The hydrogel and tacky starch together with the powder particles form a discrete hydrogel-powder complex having a three-dimensional structure,
The homogenization of the step 2 and the step 3 is carried out by mechanical grinding using a ball mill, homogenization of the composition, homogenization of the particle size or homogenization of the composition and particle size, characterized by comprising a discontinuous hydrogel and corn starch as a binder A process for producing a disintegrating solid cleanser.
The method according to claim 1,
Wherein said discrete hydrogel-powder composite comprises 1 to 10 wt% of algin, 1 to 10 wt% of calcium sulfate, 0.3 to 3 wt% of magnesium oxide, 30 to 60 wt% of diatomaceous earth, 6 to 25 wt% of corn starch, To 20% by weight of an additive, 10 to 20% by weight of an additive, and a residual water content.
delete The method according to claim 1,
Characterized in that, in the discontinuous hydrogel-powder composite, water is contained in an amount of 1 to 10 times (weight) of alginate and calcium sulfate.
The method according to claim 1,
Wherein the discontinuous phase hydrogel in the discontinuous phase hydrogel-powder composite has a maximum diameter of 100 mu m or less.
The method according to claim 1,
Wherein the solid cleanser has a water content of 5 to 25% by weight.
delete delete The method according to claim 1,
Disintegrating solid cleanser comprising a discontinuous hydrogel and corn starch as a binder, characterized in that it further comprises the following steps:
(Step 6) until the water content in the resulting solid cleanser is 5 to 25% by weight of the solid cleanser.
delete

Images