JP2003313588A - Detergent composition - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detergent composition having high detergency and high foaming properties. <P>SOLUTION: This detergent composition contains a component (a) of general formula (1) (R<SP>1</SP>is an alkyl which has an average carbon number of 9-15 and a ratio of branching of ≥10% or the like; X<SP>1</SP>and X<SP>2</SP>are each H or an alkali; and n is 0-5), a component (b) of general formula (2) (X<SP>3</SP>is H or an alkali), and a component (c) of general formula (3) [R<SP>2</SP>is an alkyl which has an average carbon number of 8-18, an acyloylamidoalkyl expressed by formula: R<SP>3</SP>CONH(CH<SB>2</SB>)<SB>m</SB>- (R<SP>3</SP>CO is an acyl which has an average carbon number of 8-18; and m is 2-4) or the like], wherein the components (a), (b), and (c) are contained in the composition to satisfy: a weight ratio of (a) to (b) is 65/35 to 90/10; and a weight ratio of (c) to [(a)+(b)] is 50/50 to 5/95. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a detergent composition having a high detergency and a high foaming property.

[0002]

2. Description of the Related Art A phosphoric acid ester-based surfactant, which is a kind of anionic surfactant, has been used as a hypoallergenic surfactant which has hitherto been blended in facial and body cleansing agents. It is used. The phosphate ester type surfactant is generally supplied as a mixture of monoester and diester or a mixture of mono, di and triesters. However, this mixture is inferior in solubility in water and foaming power, and there is a problem that it is difficult to mix it with a detergent as it is. Further, a compound in which ethylene oxide is introduced to improve water solubility has been known, but this compound has a small foaming power and also has a poor detergency, so that it is difficult to mix it with a detergent.

An object of the present invention is to provide a detergent composition having a high detergency and a high foaming property.

[0004]

The present invention comprises the following components (a), (b) and (c), the weight ratio of (a) component to (b) component, (a) / ( b) = 65 / 35-9
0/10, weight of component (c) and component (a) and (b)
Ratio of total weight of components, (c) / ((a) + (b)) =
There is provided a detergent composition which is 50/50 to 5/95. (A) Alkylphosphoric acid monoester represented by the general formula (1)

[0005]

[Chemical 4]

(In the formula, R ¹ represents an alkyl group or an alkenyl group having an average carbon number of 9 to 15 and a branching rate of 10% or more, and X 1
¹ and X ² each represent a hydrogen atom or an alkali metal,
n represents 0 to 5 which represents the average number of moles of ethylene oxide added.
Is the number of. ) (B) Alkylphosphoric acid diester represented by the general formula (2),

[0007]

[Chemical 5]

(In the formula, R ¹ and n have the same meanings as described above, and X ³ represents a hydrogen atom or an alkali metal.) (C) The amine oxide represented by the general formula (3).

[0009]

[Chemical 6]

(In the formula, R ² is a linear or branched alkyl group or alkenyl group having an average carbon number of 8 to 18 or an acyloylamidoalkyl group represented by the formula R ³ CONH (CH ₂ ) _m-. shown, R ³ CO is an average carbon number from 8 to 18
Is an acyl group, and m is an integer of 2 to 4. )

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION In the components (a) and (b) of the present invention, R ¹ has an average carbon number of 9 to 15, preferably 10 to 14, and more preferably 11 from the viewpoint of foamability and water solubility. To 13 alkyl groups or alkenyl groups, and the branching rate thereof is 10% or more, preferably 10 to 60%.

Here, the branching rate is the proportion (% by weight) of the branched chain alkyl group or alkenyl group in all the alkyl groups or alkenyl groups represented by R ¹ , and the actual branching rate is the value of the target sample. Gas chromatographic analysis is performed, and it is calculated by the following formula from the size of each peak area of the corresponding straight chain and branched chain.

[0013]

[Equation 1]

Further, X ¹ , X ² and X ³ each represent a hydrogen atom or an alkali metal, and examples of the alkali metal include lithium, sodium and potassium, and sodium and potassium are preferable. n is a number of 0 to 5 showing the average number of moles of ethylene oxide added, and preferably 0 to 3.

The ratio of the component (a) to the component (b) in the detergent composition of the present invention is (a) / (b) = 65 / in terms of weight ratio from the viewpoint of water solubility, foaming property and the like. 35-90 / 10, preferably 65 / 35-85 / 15.

The components (a) and (b) of the present invention include, for example, a corresponding aliphatic alcohol and a phosphorylating agent such as phosphoric anhydride or phosphorus oxychloride, and the components (a) and (b). The reaction is carried out under the conditions such that the above weight ratio is obtained, and further neutralization with an alkali such as sodium hydroxide or potassium hydroxide gives a mixture of the component (a) and the component (b).

The aliphatic alcohol used here is a mixture of aliphatic alcohols having the above average carbon number and branching ratio, or a commercially available product having the above average carbon number and branching ratio. Aliphatic alcohols can be used.

In the component (c) of the present invention, R ² is an alkyl group or alkenyl group having an average carbon number of 8 to 18, preferably 10 to 14, or R ³ CONH (from the viewpoints of detergency and foamability. CH ₂ ) _m − (R ³ CO has an average carbon number of 8
To 18, preferably 10 to 14 acyl groups, and m is 2
4, preferably an acyloylamidoalkyl group represented by 3). R ² and R ³ CO are mixed alkyl groups derived from animal-based natural oils or synthetic oils such as beef tallow and pig oil, and vegetable-based oils such as soybean oil, coconut oil and palm kernel oil, and mixed oils thereof. Alternatively, it may be an alkenyl group or an acyl group. A mixed alkyl group or an acyl group derived from coconut oil or palm kernel oil is particularly preferable.

Preferred amine oxides include lauryl dimethyl amine oxide represented by the general formula (4), lauroylamidopropyl dimethyl amine oxide represented by the general formula (5), and coconut fatty acid represented by the general formula (6). Examples thereof include amidopropyldimethylamine oxide.

[0020]

[Chemical 7]

The total content of the components (a) and (b) in the detergent composition of the present invention is preferably 3 to 50% by weight,
5 to 35% by weight is more preferable. The content of the component (c) is preferably 0.5 to 20% by weight, and 1 to 10% by weight.
Is more preferable. The total content of the components (a), (b) and (c) is preferably 3 to 65% by weight, more preferably 10 to 40% by weight.

The ratio of the weight of the component (c) to the total weight of the components (a) and (b) is preferably (c) /
((A) + (b)) = 50/50 to 5/95, and more preferably 40/60 to 20/80.

In the detergent composition of the present invention, if necessary, other surfactants used for ordinary detergents such as polyoxyalkylene alkyl ether sulfate, alkyl sulfate, alkylbenzene sulfonate, α -Olefin sulfonate, alkane sulfonate, fatty acid salt,
anionic surfactants such as α-sulfo fatty acid ester salts and polyoxyalkylene alkyl ether carboxylates,
Polyoxyalkylene alkyl ethers, alkyl glucosides, mono- and dialkanolamides of fatty acids, nonionic surfactants such as pluronic surfactants, betaine compounds such as alkyl betaines, amidopropyl betaines, sulfobetaines, quaternary ammonium salts, etc. It is also possible to add a cationic surfactant of

In the detergent composition of the present invention, if necessary, components used in ordinary detergents, for example, moisturizing agents such as propylene glycol, glycerin and sorbitol; methyl cellulose, polyoxyethylene glycol distearate. , Viscosity modifiers such as ethanol; bactericides such as triclosan and trichlorocarban; anti-inflammatory agents such as potassium glycyrrhizinate and tocopherol acetate; antidandruff agents such as zinc pyrithione and octopirox; preservatives such as methylparaben and butylparaben; fragrances , Dyes, antioxidants and the like can be added.

[0025]

Example 1 A mixture of components (a) and (b) shown in Table 1 ab-1 to ab-1
ab-15 and the above general formula (4) as the component (c)
Using the amine oxide represented by (6), Table 2 and Table 3
The cleaning composition of each composition shown in was prepared by a conventional method. With respect to the obtained detergent composition, detergency and foaming property were evaluated by the following methods. The results are shown in Tables 2 and 3.

<Evaluation Method> Detergency: A human having a forearm with four circles having a diameter of 2 cm is marked on each arm, and 10 μL of lanolin containing 0.1% by weight of carbon black is applied to each circle as a model stain in each circle. .
After 10 μL of a 10-fold diluted aqueous solution of each detergent composition is applied to each circle, the circle is rubbed 5 times so as to always have a constant force and rinsed with tap water for 3 seconds.

The cleaning rate is calculated by the following formula from the color difference in the circle when the stain is applied and the color difference in the circle after rinsing. For one sample, the washing rate at four places on one forearm was calculated, and the average value was used as the washing rate for the sample, and the judgment was made according to the following criteria.

[0028]

[Equation 2]

Judgment Criteria ∙ ∙ Cleaning rate 80% or more ∙ ∙ Cleaning rate 60% or more and less than 80% × ∙ Cleaning rate less than 60% ・ Foaming property: 10 times diluted aqueous solution of the cleaning composition 100m
2 g of lanolin as an artificial stain was added to 1 and stirred for 1 minute in a glass cylindrical tube with an inner diameter of 6.5 cm under the conditions of a flat propeller at 40 ° C. and a rotation speed of 1000 rpm for every 10 seconds inversion. The amount of foaming was measured 5 minutes after the completion of stirring.
The measured foam amount was judged according to the following judgment criteria. ○: Bubble amount 155ml or more △: Bubble amount 145ml or more, less than 155ml × ... Bubble amount less than 145ml

[0030]

[Table 1]

[0031]

[Table 2]

[0032]

[Table 3]

* 1: Component (c) c-1: Lauryldimethylamine oxide represented by the general formula (4) c-2: Lauroylamidopropyldimethylamine oxide represented by the general formula (5) c-3: Palm fatty acid amide propyldimethylamine oxide represented by the general formula (6)

[0034]

The cleaning composition of the present invention has excellent detergency and high foaming property, is suitable for cleaning skin and hair, and is useful as a shampoo, body shampoo and the like. Also,
It is also useful as a cleaning agent that comes into direct contact with skin for a long time, such as kitchen detergent.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yohei Kaneko             Kao Co., Ltd. 1334 Minato, Wakayama City, Wakayama Prefecture             Inside the laboratory (72) Inventor Yokotsuka Dai             Kao Co., Ltd. 1334 Minato, Wakayama City, Wakayama Prefecture             Inside the laboratory (72) Inventor Morinobu Fukuda             Kao Co., Ltd. 1334 Minato, Wakayama City, Wakayama Prefecture             Inside the laboratory F-term (reference) 4C083 AC561 AC562 AC901 AC902                       CC23 CC38 DD23 EE03 EE07                 4H003 AB39 AB40 AC15 BA12 DA02                       DA17 ED02 FA02 FA18

Claims (3)

[Claims] 1. The following components (a), (b) and (c):
A component, and a weight ratio of the component (a) and the component (b),
(A) / (b) = 65/35 to 90/10, the ratio of the weight of the component (c) to the total weight of the components (a) and (b), (c) / ((a) + ( b)) = 50/50 to 5/9
The detergent composition which is 5. (A) Alkyl phosphoric acid monoester represented by the general formula (1): (In the formula, R ¹ represents an alkyl group or an alkenyl group having an average carbon number of 9 to 15 and a branching rate of 10% or more, X ¹ and X ² each represent a hydrogen atom or an alkali metal, and n represents an average addition of ethylene oxide. It is a number of 0 to 5 indicating the number of moles.) (B) An alkylphosphoric acid diester represented by the general formula (2), (In the formula, R ¹ and n have the same meanings as described above, and X ³ represents a hydrogen atom or an alkali metal.) (C) An amine oxide represented by the general formula (3): (In the formula, R ² is a linear or branched alkyl group or alkenyl group having an average carbon number of 8 to 18, or a compound represented by the formula R ³ CO
NH (CH _{2) m} - show the acyloxyalkyl yl amidoalkyl group represented by, R ³ CO is an average acyl group having 8 to 18 carbon atoms,
m shows the integer of 2-4. ) 2. The weight ratio of component (a) and component (b) is
The cleaning composition according to claim 1, wherein (a) / (b) = 65/35 to 85/15. 3. The cleaning composition according to claim 1, wherein the total content of the component (a), the component (b) and the component (c) is 3 to 65% by weight.