JP2010209322A - Cleaner - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cleaner which has high affinity with skin and towel, has glutinosity and is easily extended on the skin and towel as the paste-like cleaner, further, is excellent in foaming property and has easily extensible characteristic because of fineness of foam. <P>SOLUTION: The paste-like cleaner comprises the following components (A) to (E): (A) a fatty acid or salt thereof of 20 to 50 mass%; (B) cationic polymer of 0.02 to 0.2 mass%; (C) nonionic polymer selected from hydroxypropyl guar gum, polyvinylpyrrolidone and polyethylene glycol, of 0.02 to 0.2 mass%; (D) polyhydric alcohol having three or more hydroxy groups in each molecule, of 3 to 30 mass%; and (E) water. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a paste-like cleaning agent.

  Fatty soap soaps contain a relatively large amount of fatty acids with a short chain length and become liquid by increasing the degree of neutralization. On the contrary, a relatively large amount of fatty acids with a long chain length However, it is known that a paste-like form is obtained by lowering the degree of neutralization.

  The paste-like cleaning agent as described above has features such as finer foam, creamy and comfortable, better rinsing properties and lower irritation to the skin than a liquid cleaning agent. For this reason, in many cases, a paste-like cleaning agent is used as a facial cleanser. About the paste-form cleaning agent, examination for improving the performance of foam, rinse performance, and the moisture retention to the skin after washing | cleaning is made | formed (patent document 1, patent document 2).

  The fatty acid soap-based paste cleaning agent as described above has a remarkable change in hardness with respect to a change in temperature, and therefore, it has been studied to add a cationic polymer compound (Patent Document 3). However, even such a paste-like cleaning agent is not easily collapsed and poorly stretched due to the hard liquidity of the cleaning agent during normal use. Therefore, the pasty detergent is unsuitable for use as a whole body detergent. Specifically, many users use a tool such as a towel when cleaning the whole body. When a paste-like cleaning agent is used on a towel, the liquid is hard and the elongation is poor, so the cleaning agent stays in one part of the towel and does not spread uniformly. Therefore, the paste-like cleaning agent has problems such as a reduction in contact area with water, slow solubility in water, and difficulty in foam formation.

JP-A-2005-23069 JP 7-508753 gazette JP 62-4799 A

  The present invention has a high affinity with skin and towels, has a stickiness, is a paste-like cleaning agent that easily spreads evenly on the skin and towels, has high foaming properties, and has a characteristic that bubbles are fine and easy to stretch. It is to provide a cleaning agent having

  By combining a fatty acid salt with a cationic polymer and a specific nonionic polymer, the present inventors have a paste-like, high affinity with skin and towels, are easy to spread uniformly, and foam. It has been found that a detergent that is rich in properties and has a fine foam and is easy to stretch can be obtained.

The present invention includes the following components (A) to (E):
(A) Fatty acid or its salt 20-50 mass%,
(B) Cationic polymer 0.02-0.2 mass%,
(C) 0.02 to 0.2% by mass of a nonionic polymer selected from hydroxypropyl guar gum, polyvinylpyrrolidone and polyethylene glycol,
(D) 3 to 30% by mass of a polyhydric alcohol having 3 or more hydroxyl groups in the molecule,
(E) A paste-like cleaning agent containing water is provided.

  The cleaning agent of the present invention is a paste-like cleaning agent that has a high affinity with skin and towels, has a stickiness, and easily spreads uniformly on the towel. Furthermore, when the cleaning agent of the present invention is used with a towel, a large amount of foam tends to come out of the towel, and the foam is fine and easy to stretch.

  As a fatty acid which comprises the fatty acid of the component (A) used in this invention, or its salt, a C8-24 thing is preferable. Furthermore, it is preferable to contain a C15 or less fatty acid and a C16 or more fatty acid. The mass ratio of fatty acids having 15 or less carbon atoms and fatty acids having 16 or more carbon atoms is preferably 75:25 to 20:80, 60:40 to 25:75, and further 40:60 to 30:70. However, it is more preferable from the viewpoint of easy foaming of the cleaning agent, and the rinsing property is also good.

Preferred examples of the fatty acid having 15 or less carbon atoms include lauric acid and myristic acid.
Examples of the fatty acid having 16 or more carbon atoms include palmitic acid, stearic acid, isostearic acid, oleic acid, arachidic acid, behenic acid, lignoceric acid and the like.

  In addition, the fatty acid composition is preferably 10 to 25% by mass of the fatty acid having 20 to 24 carbon atoms in the total fatty acid, more preferably 12 to 23% by mass, and further 15 to 21% by mass. It is preferable in terms of the hardness of the agent and the feeling of the skin after washing.

  The fatty acid having 20 to 24 carbon atoms is preferably a linear saturated fatty acid having 20 to 24 carbon atoms, and examples thereof include arachidic acid (20 carbon atoms), behenic acid (22 carbon atoms), lignoceric acid (24 carbon atoms) and the like. Furthermore, arachidic acid and behenic acid are preferred.

Examples of the counter ion constituting the fatty acid salt include alkali metals such as sodium and potassium, basic amino acids, and organic amines. Of these, alkali metal salts are preferred, and potassium salts are more preferred.
Further, the neutralization degree of the fatty acid is preferably from 60 to 100%, more preferably from 65 to 95%, and further preferably from 70 to 90% from the viewpoint of foamability and stability over time.

  1 type or more can each be used for a fatty acid and its salt, 20-50 mass% is contained as a fatty acid in the whole composition, Preferably it is 20-45 mass%, More preferably, it contains 20-40 mass%. If it exists in this range, it is preferable from the point of the hardness of a paste-form cleaning agent, or the ease of extending.

  The cationic polymer of component (B) used in the present invention includes cationized cellulose, cationized starch, cationized guar gum, cationized tara gum, cationized locust bean gum, cationized fenugreek gum, diallyldialkyl quaternary ammonium salt / acrylamide. Examples thereof include a copolymer and a diallyldialkyl quaternary ammonium salt / acrylamide / acrylic acid copolymer. Among these, cationized cellulose, cationized guar gum, and diallyldialkyl quaternary ammonium salt / acrylamide copolymer are preferable. A diallyldialkyl quaternary ammonium salt / acrylamide copolymer is more preferred. Furthermore, it is a copolymer of dimethyl diallyl ammonium halide and acrylamide, and the mass ratio of dimethyl diallyl ammonium halide and acrylamide is 1:99 to 99: 1, and more preferably 5:95 to 95: 5.

As a more specific example of the cationic polymer, dialkyldialkyl quaternary ammonium salt (DMDAAC) / acrylamide (AM) copolymer, Marquat 550 (weight average molecular weight: 160,000, cationic charge density: 4.22 meq / g, DMDAAC: AM = 50: 50), Marquat 2200 (weight average molecular weight: 90,000, cationic charge density: 4.22 meq / g, DMDAAC: AM = 50: 50), Marquat S (weight average molecular weight: 260,000, cationic charge) Density: 4.22 meq / g, DMDAAC: AM = 50: 50) [NALCO, copolymer of acrylamide and diallyldimethylammonium salt], Poise C-60H (weight average molecular weight: 600,000, cationic charge density: 1.07-1.78 meq / g), Katachiro M-80 (weight average molecular weight: 800,000, ON charge density: 0.93 to 1.21 meq / g), Poise C-150L (weight average molecular weight: 1.5 million, cationic charge density: 0.71 to 1.07 meq / g) [above, Kao Corporation, cationized cellulose (O- [2-hydroxy-3- (trimethylammonio) propyl] hydroxyethylcellulose chloride)], Jaguar C17 (weight average molecular weight: 300,000, cationic charge density: 1.07-1.50 meq / g), Jaguar C14 (Weight average molecular weight: 300,000, cationic charge density: 0.93 to 1.21 meq / g) [above, Rhodia, cationized guar gum (guar hydroxypropyltriammonium chloride)] and the like.
The cationized charge density of cationized cellulose and guar hydroxypropyltriammonium chloride is based on the nitrogen content ratio (% by mass) in the polymer, assuming that the nitrogen contained in the polymer is 100% cationized. Asked.

Among these, it is preferable that the weight average molecular weight of a component (B) is 90,000-10 million from a viscous viewpoint of the cleaning agent produced in combination with the component (C) mentioned later, 100,000-150. 10,000, more preferably 160,000 to 800,000.
From the viewpoint of foam quality, the cationized charge density of the component (B) is preferably 0.5 to 4.5 meq / g, 0.7 to 4.4 meq / g, and more preferably 3.0 to 4.3 meq. / G is preferred.

  The component (B) is contained in an amount of 0.02 to 0.2% by mass in the total composition from the viewpoint of improving the foamability and foaming property of the component (A) and the feeling of use, and is preferably 0.00. The content is from 05 to 0.17% by mass, and more preferably from 0.06 to 0.12% by mass.

  Component (C) used in the present invention is a nonionic polymer selected from hydroxypropyl guar gum, polyvinyl pyrrolidone and polyethylene glycol. Of these, hydroxypropyl guar gum is more preferred. These weight average molecular weights are preferably 40,000 to 3,000,000, more preferably 300,000 to 2.750,000, and more preferably 2,000,000 to 2,500,000, from the viewpoints of viscosity and foaming properties of the detergent.

  As more specific examples of nonionic polymers, Alcox series (Meisei Chemical Co., Ltd., polyethylene glycol): Alcox E30 (weight average molecular weight 300,000 to 500,000), Alcox E-45 (weight average molecular weight 600,000 to 800,000), Alcox E-60 (weight average molecular weight 1 million to 1.2 million), Alcox E-75 (weight average molecular weight 2 million to 2.5 million), Alcox E-100 (weight average molecular weight 2.5 million to 3 million) ); Rubiscol series (BASF Japan, polyvinylpyrrolidone): Rubiscol K30 (weight average molecular weight 40,000 to 60,000), Rubiscol K90 (weight average molecular weight 1,200,000); Jaguar HP series (Rhodia, hydroxypropyl guar gum) , Jaguar HP8, HP105, HP-120 (all heavy It includes average molecular weight 2.2 million), and the like.

  Component (C) is contained in the total composition in an amount of 0.02 to 0.2% by mass, preferably 0.05 to 0.17% by mass, and more preferably 0.06 to 0.06% in terms of the softness of the foam and the elongation. It is contained by 0.12% by mass.

  The cleaning agent of the present invention expresses a unique effect not found in past paste-like cleaning agents by using a combination of the cationic polymer of component (B) and the nonionic polymer of component (C). can do. For example, the paste-like cleaning agent of the present invention is characterized by good fit to the skin and towel, unique stickiness, ease of spreading on the skin and towel, and easy spreading. The conventional paste-like cleaning agent has a problem that the viscosity of the agent is high, so that it does not fit well with wet hands or towels and is easy to drop (it is easy to roll off due to malfunction from a towel etc.). However, the paste-like cleaning agent of the present invention is very familiar to skin and towels. Furthermore, when it is stretched on the skin with a hand or towel, there is a stickiness, so it stretches smoothly like a thread. As a result, it is possible to extend the cleaning agent uniformly and cleanly. And the thinly extended cleaning agent can increase the contact area with water, and the dispersibility (solubility) in water is also improved. From such a viewpoint, the mass ratio of the components (B) and (C) is preferably 5: 1 to 1: 5, more preferably 4: 1 to 1: 4, and further preferably 2: 1 to 1: 2.

  Next, foam quality is examined. When the cationic polymer of component (B) is added alone to the cleaning agent, and further the amount of the cationic polymer is increased, the foam is not only hard and fine, but the foam produced using the towel is sufficiently foamed to overflow from the towel. do not do. Therefore, this detergent is not suitable for washing the whole body. When the nonionic polymer (C) is simply added to the cleaning agent, and when the amount of the nonionic polymer is increased, the foam that can be initially produced is large, so that the foam produced using the towel is sufficiently foamed to overflow from the towel. . However, the retention of the generated foam is very poor, and the foam disappears while the whole body is washed. From these facts, the action of the cationic polymer of component (B) on the soap film is that the cationic part of the polymer interacts with the negatively charged part of the soap molecule with the hydrophobic group facing the air side. It is thought to strengthen the soap film. Thereby, it is considered that the bubbles do not disappear and become fine and held. On the other hand, as the action of the nonionic polymer of component (C) on the soap film itself, since it has a hydrophobic site, it affects the gas-liquid interface and reduces the inherent stability of the soap film. Conceivable.

  By blending these two polymers in a specific ratio, the foam quality becomes creamy, and it can have the property that it tends to foam as it overflows from the towel. This is because the nonionic polymer of the component (C) can make the foam initially soft and large, and the effect of stabilizing the foam film by the cationic polymer (B) makes the foam finer and creamy as it is washed. It is done. In addition, due to the effect of the nonionic polymer, it is easy to wash the whole body because the foam is soft and stretches despite the fine foam.

Examples of the polyhydric alcohol having 3 or more hydroxyl groups in the molecule of component (D) used in the present invention include glycerin, sorbitol, mannitol, erythritol, xylitol, maltitol, trehalose, sucrose, polyglycerin, and the like. Glycerin and sorbitol are preferred.
One or more kinds of these polyhydric alcohols can be used, and the total composition contains 3 to 30% by mass, preferably 5 to 28% by mass. From the viewpoint of skin feeling after washing.

  The cleaning agent of the present invention can further contain glycols or glycol ethers. Specifically, ethylene glycol, propylene glycol, 1,3-butylene glycol, diethylene glycol, dipropylene glycol, isoprene glycol, polyethylene glycol (average molecular weight 2000 or less), polypropylene glycol (average molecular weight 1500 or less), diethylene glycol monoethyl ether, etc. Is mentioned. Furthermore, dipropylene glycol and diethylene glycol monoethyl ether are preferable.

  One or more kinds of these glycols or glycol ethers can be used, and 3 to 30% by mass, and further 5 to 25% by mass in the total composition are foamed, and the solubility of fatty acids during production This is preferable.

  The cleaning agent of the present invention further includes components used in ordinary cleaning agents, for example, surfactants other than fatty acid salts, moisturizers, oily components, bactericides, anti-inflammatory agents, antiseptics, chelating agents, thickeners. , Salts, pearlizing agents, scrub agents, fragrances, cooling agents, pigments, ultraviolet absorbers, antioxidants, plant extracts, and the like.

  The cleaning agent of the present invention can be produced by further containing (E) water and mixing the blending components. It is preferable to contain 30-50 mass% of water in the whole composition.

  The cleaning agent of the present invention is paste-like, and specifically has a viscosity at 30 ° C. of 10 to 10,000 dPa · s. 100 to 9000 dPa · s is preferable from the viewpoint of shape retention, and 200 to 8000 dPa · s is more preferable from the viewpoint of ease of stretching.

  The pasty cleaning agent of the present invention is more suitable as a whole body cleaning agent.

Examples 1-36, Comparative Examples 1-16
A cleaning agent having the composition shown in Tables 1 to 13 is produced by mixing each component, and the stickiness of the paste, the spread of the paste on the towel, the foaming property, the fineness of the foam, and the ease of foam expansion Then, rinsing properties, skin feeling after washing, and viscosity were evaluated and measured. A result is combined with Tables 1-13 and shown.

(Evaluation methods)
(1) Stickiness of pasty detergent:
1 g of each cleaning agent is squeezed out onto a towel that is folded in four (manufactured by Mana, nylon towel, material: 100% nylon, size: 30 cm × 105 cm). The upper part is attached to the index finger, and the index finger is lifted 30 cm over one second. At this time, the paste-like cleaning agent adhering to the finger is torn into a string between the finger and the towel. At that time, the length (mm) of the cleaning agent extended into a thread shape was measured to evaluate stickiness. The stronger the stickiness, the longer the paste.

(2) Spreading of paste cleaner on towel:
1 g of each cleaning agent is squeezed into one end A of a towel (manufactured by Mana, nylon towel, material: 100% nylon, size: 30 cm × 105 cm) folded in four directions. As the towel is folded further, the edge B of the other towel is attached to the paste. After that, slide the edge B to the side and spread the paste on the towel. At that time, the length (mm) of the spread spread was measured, and the stretch spread on the towel was evaluated. The better the spread, the longer the spread.

(3) Foaming property (ease of foam overflow):
6 g of each cleaning agent is placed on a four-fold towel (mana company, nylon towel, material: 100% nylon, size: 30 cm × 105 cm), and the cleaning agent is spread with a towel. Next, apply 20 g of hot water (about 40 ° C.) to the entire towel twice (about 40 g in total). Whip the towel 50 times to entrain the air. At that time, the foam formed on the towel surface is collected in a 1 L beaker (manufactured by IWAKI, diameter 11 cm, height 15 cm). After shaking the beaker and packing the foam closely, measure the height (cm) of the collected foam using a ruler. The volume of foam collected (cm ³ ) was calculated from the height obtained and the bottom area of the beaker. The volume of the obtained foam was evaluated as an index of foamability.

(4) Fineness of foam:
Part of the foam collected in (3) above is taken on a slide glass (manufactured by MATSANAMI, 76 mm × 26 mm), and a cover glass (manufactured by MATSANAMI, 18 mm × 18 mm) is placed on the foam. Thereafter, the bubbles are observed using a digital microscope (manufactured by KEYENCE, VHX magnification: 450 times, visual field: 680 × 480 μm), the diameters of all the bubbles in the visual field are measured, and the average value (μm) is calculated. The value was evaluated as an index of the fineness of the foam.

(5) Ease of foam, rinsability, skin feeling after washing:
Three specialist panels performed the following whole body cleaning tests using each cleaning agent, sensoryly evaluated the ease of foam expansion, rinsability, and skin feeling after cleaning, and determined according to the following sensory evaluation criteria.

(Whole body washing test)
7 g of each cleaning agent is placed on a four-folded towel (mana company, nylon towel, material: 100% nylon, size: 30 cm × 105 cm), and the cleaning agent is stretched out with a towel. Next, apply 20 g of hot water (about 40 ° C.) to the entire towel twice (about 40 g in total). Whip the towel 50 times to entrain the air. Thereafter, the whole body was washed, and the ease of foaming at the time of washing, rinsing properties, and skin feeling after washing were evaluated.

(Sensory evaluation criteria)
Three expert panels score each item with 5: very good, 4: good, 3: normal, 2: bad, 1: very bad. Next, the average score of the scores of the three specialized panels for each item was calculated, and the average score was used as an evaluation index for each item.

(6) Paste viscosity:
Each of the cleaning agents was kept at 30 ° C. for 24 hours after production, and then measured under the following conditions.
Measuring device: B type viscometer (manufactured by Toki Sangyo Co., Ltd., model: B8R)
Measurement temperature: 30 ° C.
Rotor: TD (8000 dPa · s or less) or TE (8000 dPa · s or more),
Rotation speed: 5rpm,
Stand: Helical stand,
Measurement time: 1 minute

Claims (8)

The following components (A) to (E):
(A) Fatty acid or its salt 20-50 mass%,
(B) Cationic polymer 0.02-0.2 mass%,
(C) 0.02 to 0.2% by mass of a nonionic polymer selected from hydroxypropyl guar gum, polyvinylpyrrolidone and polyethylene glycol,
(D) 3 to 30% by mass of a polyhydric alcohol having 3 or more hydroxyl groups in the molecule,
(E) A paste-like cleaning agent containing water.   The cleaning agent according to claim 1, wherein the component (B) is a cationic polymer having a weight average molecular weight of 90,000 to 10,000,000.   The cleaning agent according to claim 1 or 2, wherein the component (B) is a cationic polymer having a charge density of 0.5 to 4.5 meq / g.   The cleaning agent according to any one of claims 1 to 3, wherein the mass ratio of the component (B) to the component (C) is 5: 1 to 1: 5.   The cleaning agent according to any one of claims 1 to 4, wherein the component (B) is a cationic polymer selected from a copolymer of dimethyldiallylammonium halide and acrylamide, cationized cellulose, and cationized guar gum.   The cleaning agent according to any one of claims 1 to 5, wherein the component (C) is hydroxypropyl guar gum.   In the fatty acid of a component (A), the mass ratio of a C15 or less fatty acid and a C16 or more fatty acid is 75: 25-20: 80, The cleaning agent of any one of Claims 1-6.   Furthermore, the cleaning agent of any one of Claims 1-7 containing glycols or glycol ethers.