JP5048947B2 - Aqueous cleaning composition - Google Patents

Description

  The present invention relates to a creamy foamy and highly foaming aqueous detergent composition.

  Foaming detergents such as hair shampoos, whole body cleansers, and dishwashing detergents are required to have various performances such as detergency, foam performance such as foam quality, and feeling of use, and have gentle action on the skin. Is required. Among these, it is particularly important for hair shampoos, body cleansing agents and the like to be excellent in foam performance.

By the way, in these foaming detergents, carboxylic acid-based, sulfuric acid-based, phosphoric acid-based anionic surfactants, betaine-based amphoteric surfactants, sugar-based nonionic surfactants and the like are foaming surfactants. It is used as In general, a surfactant having a high detergency such as a sulfate-based anionic surfactant has high foaming properties, but has difficulty in foaming and mildness of action on the skin. On the other hand, mild surfactants that act on the skin, such as phosphate anionic surfactants and sugar nonionic surfactants, are generally difficult to foam. For this reason, various attempts have been made to simultaneously satisfy the foamability, foam quality, and mildness of the action on the skin.
For example, in the case of a phosphate surfactant, a detergent composition containing a phosphate surfactant and a higher fatty acid salt has been proposed for the purpose of enhancing the foaming power (see Patent Document 1 and Patent Document 2). In addition, a cleaning composition containing a phosphoric acid surfactant and glyceryl ether has been proposed (see Patent Document 3).
In addition, for the purpose of obtaining a detergent composition having an excellent feeling of use without a sense of tension or bulkiness, a detergent containing an anionic surfactant, an amphoteric surfactant, polyoxypropylene butyl ether or polyoxyethylene polyoxypropylene butyl ether An agent composition has been proposed (see Patent Document 4).

JP 57-49698 A JP-A-1-316309 JP 2001-107079 A JP-A-6-100954

  However, the detergent compositions proposed in Patent Documents 1 to 4 are excellent in foaming property and feeling of use, but are not sufficiently satisfactory in terms of foam quality such as creamy foam.

  An object of the present invention is to provide an aqueous detergent composition that has a mild effect on the skin and is excellent in foamability and foam quality.

The present invention includes (A) 10-30% by mass of a foaming surfactant, (B) 0.5-5% by mass of a higher alcohol having 14 or more carbon atoms , (C) 3-20% by mass of polyoxypropylene butyl ether , And a skin cleanser containing 0.5 to 10% by mass of alkyl glyceryl ether having 6 to 10 carbon atoms in the alkyl group .

  The aqueous cleaning composition of the present invention has a mild action on the skin, creamy foaming, and high foaming properties.

  As the foaming surfactant (A) used in the present invention, anionic surfactants, amphoteric surfactants and nonionic surfactants can be used.

  Examples of the anionic surfactant include carboxylic acid, sulfonic acid, sulfuric acid and phosphoric acid surfactants. The hydrophobic group is linear or branched and is preferably an alkyl group or acyl group having an average carbon number of 8 to 16. The salt is preferably a sodium salt, potassium salt, ammonium salt or monoethanolamine salt which is water-soluble.

  Carboxylic acid surfactants include fatty acid soaps, alkyl ether carboxylates; amino acid anionic surfactants such as acylated β-alanine salts, acylated glutamate salts, acylated alanine salts, and N-alkyliminodicarboxylate salts. Is mentioned. Examples of the sulfonic acid surfactant include acylated taurine salts, alkylnaphthalene sulfonates, α-sulfo fatty acid salts, alkyl sulfonates, alkyl sulfosuccinates, α-olefin sulfonates, and the like. Examples of sulfuric surfactants include alkyl sulfates, alkyl ether sulfates, and alkyl allyl ether sulfates. Examples of phosphoric acid surfactants include alkyl phosphates and alkyl ether phosphates.

  Examples of amphoteric surfactants include betaine surfactants and imidazoline surfactants. The hydrophobic group is linear or branched and is preferably an alkyl group or acyl group having 10 to 16 carbon atoms.

  Examples of betaine amphoteric surfactants include N-dodecyl-N, N-dimethylbetaine, N-cetyl-N, N-dimethylbetaine, N-coconut oil alkyl-N, N-dimethylbetainecetyldimethylbetaine, and the like. Long chain alkyl-N, N-dimethylbetaine; coconut fatty acid amide betaine such as coconut oil fatty acid amidopropyl betaine, lauric acid amidopropyl betaine, lauric acid amidomethyl betaine, myristic acid amidomethyl betaine, palmitate amidomethyl betaine; Examples include sulfobetaines such as dimethylsulfopropylbetaine, coconut oil fatty acid aminomethylsulfopropylbetaine, myristylaminomethyldimethylsulfopropylbetaine, laurylaminomethyl-bis- (2-hydroxyethyl) -sulfopropylbetaine. It is.

  Examples of the imidazoline-based amphoteric surfactant include N-lauroyl-N ′-(2-hydroxyethyl) -N′-carboxymethylethylenediamine, N-lauroyl-N ′-(2-hydroxyethyl) -N ′, N′-. Bis (carboxyethyl) ethylenediamine, N-lauroyl-N′-carboxymethyl-N′-carboxymethoxyethylethylenediamine, N-lauroyl-N′-carboxyethyl-N ′-(2-hydroxyethyl) -ethylenediamine, N-lauroyl -N'-carboxyethoxyethylethylenediamine, N-lauroyl-N'-carboxyethyl-N'-carboxyethoxyethylethylenediamine, 2-coconut oil fatty acid acyl-N-carboxyethyl-N-hydroxyethylimidazolinium betaine, 2- Alkyl-N Carboxymethyl -N- hydroxyethyl imidazolinium betaine.

  Examples of the nonionic surfactant include sugar-based nonionic surfactants such as alkyl polyglucosides having an alkyl group having 10 to 14 carbon atoms and an average condensation number of 1 to 2 of glucose.

In the present invention, among the above surfactants, anionic surfactants are preferable, and phosphate-based surfactants are particularly preferable because of their mild action on the skin.
As the phosphoric acid surfactant, a phosphoric acid monoester represented by the general formula (1) or a salt thereof and a phosphoric acid diester represented by the general formula (2) or a salt thereof may be 60/40 to 100/0. Those contained at a ratio of (mass ratio) are preferably used.

(In the formula, R ¹ represents an alkyl group or alkenyl group having an average carbon number of 9 to 16, X ¹ and X ² each represents a hydrogen atom or an alkali metal, and n represents an average addition mole number of ethylene oxide, Indicates the number of 5.)

(In the formula, R ¹ and n represent the same meaning as described above, and X ³ represents a hydrogen atom or an alkali metal.)

  The phosphoric acid ester represented by the formula (1) and the formula (2) is, for example, a phosphorylating agent such as phosphoric anhydride or phosphorus oxychloride after adding ethylene oxide to the corresponding aliphatic alcohol as necessary. The acid monoester or salt thereof and the phosphoric acid diester or salt thereof are reacted under the conditions such that they are obtained in the mass ratio as described above, and further completely or partially neutralized with an alkali such as sodium hydroxide or potassium hydroxide. To obtain a mixture thereof. In addition, when preparing as an acid form and preparing an aqueous cleaning composition, it may neutralize by adding an alkali suitably and may adjust pH.

  As aliphatic alcohol used here, the mixture which mixed the aliphatic alcohol so that it may have the above average carbon number, or the commercially available aliphatic alcohol which has the above average carbon number can be used. Here, the average carbon number is a mass average.

Specific phosphoric acid surfactants include the following.
1. The average carbon number of the alkyl group or alkenyl group is 12 to 16, and the mass ratio of phosphoric acid monoester or salt thereof to phosphoric diester or salt thereof is 100/0 to 80/20, average addition mole of ethylene oxide Number n is 0 (see Japanese Examined Patent Publication No. 57-47959).
2. Phosphoric acid monoester having an alkyl group or alkenyl group having 11 to 15 carbon atoms or a salt thereof, and a 2-methyl branched body in the alkyl group or alkenyl group is 40 to 100% by mass (the rest is a straight chain), Ethylene oxide having an average added mole number n of 0 (see Japanese Patent No. 3035033).
3. It has an alkyl group or alkenyl group having an average carbon number of 9 to 15 and a branching rate of 10 to 60% by mass, and the mass ratio of phosphoric acid monoester or salt thereof to phosphoric diester or salt thereof is 80/20 to 60/40 The average added mole number n of ethylene oxide is 0 to 5 (see Japanese Patent No. 3327889).
4). It has an alkyl group or alkenyl group having an average carbon number of 9 to 15 and a branching ratio of 10% by mass or more, and the mass ratio of phosphoric acid monoester or a salt thereof to phosphoric diester or a salt thereof is 90/10 to 65/35 The average added mole number n of ethylene oxide is 0 to 5 (see Japanese Patent Application Laid-Open No. 2003-313585).

  (A) Foaming surfactant of this invention can be used individually by 1 type or in combination of 2 or more types, and content in an aqueous cleaning composition is 10 from a viewpoint of foaming and a detergency. It is -30 mass%, More preferably, it is 12-20 mass%.

The component (B) used in the present invention is a higher alcohol having 14 or more carbon atoms, preferably a linear or branched saturated or unsaturated higher alcohol having 14 to 18 carbon atoms. Among these, a linear saturated higher alcohol having 14 to 18 carbon atoms is particularly preferable from the viewpoint of creamy foam quality.
Moreover, you may use mixed higher alcohol derived from fats and oils as a component (B), and coconut oil, palm kernel oil, rapeseed oil etc. are mentioned as an example of fats and oils. The oil-derived higher alcohol may be used alone, or several different oil-derived higher alcohols may be combined.

  (B) A component contains 0.5-5 mass% in an aqueous cleaning composition. When the content is 0.5% by mass or more, the effect of the present invention is achieved. On the other hand, when the content exceeds 5% by mass, the amount of foam decreases, and the long-term stability of the cleaning material is not preferable. From the standpoint of obtaining better foam performance, the content of the component (B) is preferably 1 to 3% by mass.

The component (C) used in the present invention is polyoxypropylene butyl ether. By adding the component (C), the skin feel after use can be improved. Moreover, it is preferable that the weight average polymerization degree of an oxypropylene unit is 1.5-5 from the point from which sufficient foam amount is obtained.
(C) component can be used individually by 1 type or in combination of 2 or more types, and content in an aqueous cleaning composition is 3-20 mass%. The content is more preferably 5 to 15% by mass from the viewpoint of obtaining a better amount of foam.

The aqueous cleaning composition of the present invention preferably further contains (D) a cationic polymer in addition to the components (A) to (C). By containing the component (D), the viscosity can be adjusted, and the skin feel after washing can be improved.
Examples of the cationic polymer include cationized cellulose derivatives, cationic starch, cationized guar gum derivatives, diallyl quaternary ammonium salt homopolymers, diallyl quaternary ammonium salts / acrylamide copolymers, quaternized polyvinylpyrrolidone derivatives, Polyglycol polyamine condensate, hydroxyethylcellulose / dimethyldiallylammonium chloride copolymer, vinylpyrrolidone / quaternized dimethylaminoethyl methacrylate copolymer, vinylpyrrolidone / alkylaminoacrylate copolymer, vinylpyrrolidone / alkylaminoacrylate / vinylcaprolactam Copolymer, vinyl pyrrolidone / methacrylamidopropyl trimethyl ammonium chloride copolymer, alkyl acrylamide / acrylate / alkyl acrylate Noalkyl acrylamide / polyethylene glycol methacrylate copolymer, adipic acid / dimethylaminohydroxypropylethylenetriamine copolymer (“Cartaretin” manufactured by Sandos, USA), etc., especially cationized cellulose derivatives, cationized guar gum derivatives, diallyl tetra A quaternary ammonium salt / acrylamide copolymer is preferred.

  The cationic polymer of the component (D) can be used alone or in combination of two or more, and the content thereof is 0.01 to 1% by mass in the aqueous cleaning composition of the present invention. Is preferred.

  The aqueous detergent composition of the present invention can further improve foaming by containing an alkyl glyceryl ether having an alkyl group having 6 to 10 carbon atoms. Preferable alkyl glyceryl ether is α-monoglyceryl ether, and specific examples include n-octyl glyceryl ether, 2-ethylhexyl glyceryl ether, and decyl glyceryl ether. The content of these alkyl glyceryl ethers is preferably 0.5 to 10% by mass, more preferably 1 to 5% by mass in the aqueous detergent composition.

The aqueous cleaning composition of the present invention uses water as a main medium, and can be made liquid, gel, cream, etc. by adjusting the viscosity and transparency. Further, since the action of the phosphate ester of the present invention on the skin is mild, it is preferably used as a skin cleanser such as a facial cleanser or a whole body cleanser.
If the aqueous detergent composition of the present invention is transparent or translucent, a beautiful pearl appearance can be obtained when a pearl agent is blended. In this case, the transmittance of the aqueous cleaning composition at a wavelength of 650 nm is preferably 55% or more, more preferably 65% or more. Here, the transmittance is measured by using water instead of the pearl agent so that the total amount becomes 100.

  Further, in the aqueous detergent composition of the present invention, if necessary, for example, humectants such as propylene glycol, glycerin and sorbitol; viscosity modifiers such as methylcellulose, polyoxyethylene glycol and ethanol; triclosan, trichlorocarban and the like Antibacterial agents; anti-inflammatory agents such as potassium glycyrrhizinate and tocophenol acetate; antiseptics such as methylparaben and butylparaben; fragrances, pigments and antioxidants can be blended.

(Evaluation method) Foam performance, such as foam amount and foam quality, was evaluated using the following methods.
1. Foaming property: Evaluated using a hand shaking method. 2.0 g of a 4 times hard water 20-fold dilution of the cleaning material was placed in a cylindrical 50 mL test tube (diameter 22 mm) and shaken 20 times by hand. The volume of foam generated at this time was used as an index of foaming property.
2. Foam quality: evaluated using the foam viscosity method. In general, creamy foam has a small viscosity and high viscosity. Therefore, the foam quality of the cleaning material can be quantitatively evaluated by measuring the viscosity of the foam foamed under a certain condition. 20 g of a 20-fold diluted solution of 4 degree hard water was weighed into a 100 mL glass bottle and shaken 20 times by hand. The viscosity of the obtained foam was measured with a B-type viscometer.

Examples 1-6 and Comparative Examples 1-5
An aqueous detergent composition having the composition shown in Table 1 was produced and evaluated by the above evaluation method. The results are shown in Table 1.

* 1 Polyoxyethylene alkyl potassium potassium; polyoxyethylene weight average polymerization degree of 0.5, alkyl is alkyl group derived from oxoalcohol having 12 to 13 carbon atoms and 80% linearity, monoester phosphate and phosphoric acid Mass ratio of diester 85/15
* 2 Polyoxyethylene lauryl ether sodium sulfate; polyoxyethylene weight average polymerization degree 2.0
* 3 Polyoxypropylene butyl ether; oxypropylene weight average polymerization degree 2.0
* 4 Potassium hydroxide or malic acid was added to achieve a predetermined pH.

  The aqueous cleaning composition of the present invention has mild action on the skin, creamy foaming, and high foaming properties, and can be suitably used as a skin cleaning agent such as a facial cleanser and a whole body cleanser. .

Claims (5)

(A) 10-30% by mass of a foaming surfactant, (B) 0.5-5% by mass of a higher alcohol having 14 or more carbon atoms , (C) 3-20% by mass of polyoxypropylene butyl ether , and an alkyl group A skin cleanser containing 0.5 to 10% by mass of alkyl glyceryl ether having 6 to 10 carbon atoms . The skin cleanser according to claim 1, wherein the alkyl glyceryl ether having 6 to 10 carbon atoms in the alkyl group is at least one selected from n-octyl glyceryl ether, 2-ethylhexyl glyceryl ether, and decyl glyceryl ether. (A) The skin cleansing agent according to claim 1 or 2, wherein the foamable surfactant is an anionic surfactant. The skin cleansing agent according to claim 3, wherein the anionic surfactant is a phosphate surfactant. The skin cleanser according to any one of claims 1 to 4, further comprising (D) 0.01 to 1% by mass of a cationic polymer.