TW201311881A - Liquid detergent composition - Google Patents

Abstract

The present invention is a liquid detergent composition which contains (a) 5-40% by mass of one or more kinds of anionic surfactant that are selected from the group consisting of polyoxyalkylene alkyl ether sulfuric acid ester salts and alkylbenzene sulfonic acid salts, (b) a fatty acid and/or a salt thereof, (c) an alkanol amine, (d) a carbonate, (e) a nonionic surfactant, and water. The liquid detergent composition has a mass ratio of the polyoxyalkylene alkyl ether sulfuric acid ester salt(s) to the alkylbenzene sulfonic acid salt(s) of from 70/30 to 100/0, a mass ratio of the polyoxyalkylene alkyl ether sulfuric acid ester salt(s) to the component (b) of from 3/1 to 20/1, a mass ratio of the polyoxyalkylene alkyl ether sulfuric acid ester salt(s) to the component (e) of from 60/40 to 100/0, and a pH of 9-11 (at 25 DEG C).

Description

Liquid detergent composition

This invention relates to a liquid detergent composition and a hand wash method.

As a washing method for clothes and the like, it is roughly classified into two types: hand washing and washing machine washing. In recent years, there has been a tendency to increase the washing by the washing machine with the spread of the washing machine. However, it is possible to sufficiently confirm the removal of the dirt or the economical viewpoint, and the hand washing is still widely observed in the world. Especially in areas with low water resources, in order to wash with as little water as possible, hand washing is often used.

In the case of comparison with the washing by the washing machine, the hand washing can achieve a fine washing corresponding to the removal of the dirt, the type of the object to be washed, and the like, on the other hand, for the washing person, accompanied by the body Mental fatigue. In particular, it is easy to apply a mechanical force to the portion to be washed by the "washing" of the washed objects, which is one of the most natural hand washing methods.

For the consumer who washes, the amount of foam generated during the washing of the clothing or the like is the main cause of the feeling of fullness and safety of the washing, and the viewpoint of economy and foaming (bubble) In many cases, detergents mainly composed of an anionic surfactant such as an alkylbenzenesulfonate are manufactured and sold.

On the other hand, as a detergent composition for washing, a granular (solid) or liquid type is mainly known. The liquid detergent composition has the advantage that no fine powder is produced during use and is rapidly dissolved and dispersed in the wash water.

A detergent composition comprising a surfactant comprising a specific anionic surfactant and a specific nonionic surfactant mixture, a detergency aid, and a detergency adjuvant are disclosed in Japanese Patent Application Laid-Open No. Hei 10-504049. And the auxiliary detergent component, and for the purpose of use in a hand washing operation, a liquid form can be used. Further, a hand-washing detergent composition comprising an anionic surfactant, a nonionic surfactant, and a cationic surfactant under specific conditions is disclosed in Japanese Patent Laid-Open No. Hei 10-504056. Use the form of liquid. Further, an aqueous liquid detergent composition containing a specific surfactant, a higher fatty acid salt, a sulfonic acid salt of benzene or a lower alkylbenzene, an inorganic auxiliary agent, and the like are disclosed in Japanese Patent Laid-Open Publication No. Sho 52-82909. An alkali metal salt of a polybasic carboxylic acid. Further, Japanese Laid-Open Patent Publication No. 2011-89107 discloses a detergent composition containing a polyoxyalkylene alkyl ether having a relatively large average molar number of alkylene groups under specific conditions. a nonionic surfactant, a specific anionic surfactant, and a fatty acid having a carbon number of 8 to 18 or a salt thereof, and excellent in detergency and foaming property upon washing, and the foam rapidly disappears in the rinsing step. Complete the rinse quickly.

Japanese Patent Laid-Open No. 58-222195 discloses a mildly homogeneous aqueous alkaline build detergent composition comprising a detergent surfactant, an alkaline detergent adjuvant and water.

Japanese Patent Laid-Open No. Hei 10-501564 discloses a liquid detergent composition containing a lipolytic enzyme and a selected soap.

The present invention relates to a liquid detergent composition comprising (a) selected from And an anionic surfactant of one or more of the group consisting of a polyoxyalkylene alkyl sulfate ether salt and an alkylbenzene sulfonate, 5 to 40% by mass, (b) a fatty acid and/or a salt thereof, c) alkanolamine, (d) carbonate, (e) nonionic surfactant, and water, and the mass ratio of polyoxyalkylene alkyl sulfate ether salt to alkylbenzenesulfonate is 70 /30~100/0, polyoxyalkylene alkyl ether sulfate salt/(b) mass ratio is 3/1~20/1, polyoxyalkylene alkyl ether ether sulfate salt/(e) The mass ratio is 60/40 to 100/0, and the pH of the above liquid detergent composition measured at 25 ° C as described in JIS K3362:2008 8.3 is 9-11.

Hereinafter, (a) one or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzenesulfonates are referred to as component (a). Further, the (b) fatty acid and/or its salt is referred to as component (b). Further, the (c) alkanolamine is referred to as component (c). Further, (d) carbonate is referred to as component (d). Further, the (e) nonionic surfactant is referred to as component (e). In the present invention, the amounts of the component (a), the component (b), and the component (d) are each calculated as the mass% or the mass ratio in terms of the sodium salt.

Further, the present invention relates to a hand washing method for hand-washing a washed product which is in contact with a washing water comprising the liquid detergent composition of the present invention, and the quality of the washing water is washed. The quality of the object is 2 to 100 times.

In addition to having excellent detergency in the detergent composition for washing In addition, it is expected to exhibit excellent rinsing properties such as foaming property of moderate foaming during washing and rapid disappearance of foam during rinsing. In particular, it is more preferable to obtain excellent detergency, foaming property, and rinsing property in the case of using high-hardness washing water. Regarding Japanese Patent Laid-Open No. Hei 10-504049, Japanese Patent Laid-Open No. Hei 10-504056, although it is considered that the foaming property is preferable and the irritating property is low, the rapid defoaming at the time of rinsing cannot be sufficiently achieved. Japanese Patent Laid-Open No. 52-82909 is considered to be excellent in detergency and stability, but it is not possible to achieve moderate foaming and rapid defoaming in hand washing. Further, there is no suggestion in Japanese Patent Laid-Open No. 2011-89107 that the composition can reduce the blending amount of a fatty acid or a salt thereof to further improve the degree of freedom of blending while improving foaming or rinsing properties.

The present invention provides a cleaning liquid detergent composition which has more excellent detergency in washing of a clothing or the like and which is superior in both foaming property and rinsing property.

According to the present invention, there is provided a liquid detergent composition which has excellent detergency in washing of a clothing or the like and which is excellent in both foaming property and rinsing property. Such an effect of the present invention can be obtained even when it is washed and rinsed with washing water of high hardness. Further, the composition of the liquid detergent composition of the present invention has good stability such as low-temperature storage stability.

[First embodiment] <(a) component>

The component (a) is an anionic surfactant selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzenesulfonates.

As the polyoxyalkylene alkyl ether sulfate salt, there is no limitation, for example, it can be listed. And an alkyl group having a carbon number of 10 or more, further 12 or more, 20 or less, and further 14 or less, preferably an alkyl group derived from a linear primary alcohol or a linear secondary alcohol or an alkyl group derived from a branched alcohol, and The average addition molar number of the alkoxy group is 0 or more, further more than 0, further 0.5 or more, further 1 or more, 5 or less, further 4 or less, and further 3 or less. Specific examples thereof include an alkyl group having 10 to 20 carbon atoms, preferably 12 to 14 carbon atoms, preferably an alkyl group derived from a linear primary alcohol or a linear secondary alcohol or an alkyl group derived from a branched alcohol. And the average addition molar number of the alkoxy group is 0 to 5, preferably 0.5 to 4, and more preferably 1 to 3. The alkyleneoxy group preferably contains an extended ethyloxy group, and may also contain a stretching propyloxy group in the range of an average addition molar number of 0.2 to 2 moles. The salt is preferably an alkali metal salt, more preferably a salt selected from the group consisting of a sodium salt and a potassium salt, and further preferably a sodium salt.

The alkylbenzenesulfonate is not limited, and examples thereof include an alkylbenzenesulfonate having a carbon number of 8 or more and further 10 or more, and a carbon number of 20 or less and further 15 or less, preferably a linear alkyl group. . That is, as the alkylbenzenesulfonate, for example, an alkylbenzenesulfonate having a linear alkyl group having a carbon number of 8 to 20, preferably 10 to 15, is preferable.

Examples of the alkylbenzenesulfonate include an alkali metal salt such as sodium or potassium, an alkanolamine salt, or an alkaline earth metal salt such as magnesium or calcium, but the viewpoint of the detergency or the storage stability of the composition. In general, an alkali metal salt or an alkanolamine salt is preferred. In the case of preparing the composition of the present invention, an alkylbenzenesulfonic acid as an acid type compound may be added to a raw material of the composition, and a neutralization reaction with a base may be carried out in the system to form an alkylbenzenesulfonate. It may also be added to the raw material of the composition after pre-neutralization. Neutralization of alkylbenzene sulfonic acid A strong base such as sodium hydroxide, potassium hydroxide, lithium hydroxide or ammonium hydroxide or the following component (c) is used.

<(b) component>

The fatty acid and/or its salt of the component (b) is not limited, and examples thereof include a carbon number of 7 or more, a further 9 or more, and further 10 or more, and a carbon number of 43 or less, further 23 or less, and further 18 or less. A chain or a branched alkyl group; more preferably a fatty acid having a linear or methyl branch having 12 to 14 carbon atoms and a salt thereof. Specifically, the fatty acid and/or its salt as the component (b) may, for example, be a linear or branched alkane having 7 to 43 carbon atoms, preferably 9 to 23 carbon atoms, more preferably 10 to 18 carbon atoms. More preferably, it is a fatty acid having a carbon number of 12 to 14 and/or a salt thereof having a linear or methyl branch. The component (b) may have an unsaturated bond, and more preferably, the amount is 2 or less, preferably 1 or less, and more preferably 0, from the viewpoint of rinsing properties. Therefore, the component (b) is preferably a saturated fatty acid and/or a salt thereof. Specific examples of the component (b) include lauric acid and/or a salt thereof, myristic acid and/or a salt thereof, a mixture of fatty acids derived from a large amount of coconut containing lauric acid and myristic acid, and/or a salt thereof. From the viewpoint of detergency, foaming property, and rinsing property, it is preferably one or more compounds selected from the group consisting of lauric acid and a salt thereof, and myristic acid and a salt thereof, and more preferably contains a compound selected from the group consisting of a compound of one or more of myristic acid and a salt thereof. The component (b) may include a fatty acid having 12 to 14 carbon atoms and/or a salt thereof, and a fatty acid having 16 to 18 carbon atoms and/or a salt thereof.

The fatty acid salt of the component (b) is preferably an alkali metal salt or an alkanolamine salt such as sodium or potassium from the viewpoint of rinsing properties. In the case of preparing the composition of the present invention, a fatty acid as an acid type compound may be added to the composition. The neutralization reaction with the base is carried out in the system, and may also be added to the composition after pre-neutralization. As the neutralization of the fatty acid, a strong base such as sodium hydroxide, potassium hydroxide, lithium hydroxide or ammonium hydroxide or the following component (c) can be used.

<(c) component>

The component (c) is an alkanolamine, and particularly, an alkanolamine having one to three alkanol groups having 2 to 4 carbon atoms is exemplified. Among them, those in which the alkanol group is a hydroxyethyl group are preferred. In addition to the alkanol group, it is a hydrogen atom, but it can be used as the component (c) even if it is an alkyl group having 1 to 5 carbon atoms and further a methyl group. With respect to the component (c), the pKa at 25 ° C is 8.5 or more, further 8.7 or more, further 9 or more, and 10.6 or less, further 10 or less, and further 9.6 or less, from the viewpoint of the detergency and the rinsing property. The pKa is preferably 8.5 to 10.6, more preferably 8.7 to 10, and still more preferably 9 to 9.6. The alkanolamine may, for example, be a monoalkanolamine such as monoethanolamine (pKa = 9.52), N-methylethanolamine, N,N-dimethylethanolamine, N,N-diethylethanolamine or monoisopropanolamine. a dialkanolamine such as diethanolamine (pKa=8.90), N-methyldiethanolamine or N-butyldiethanolamine; and an alkanolamine such as a mixture of the above (monoalkanolamine, a mixture of dialkanolamines) class. In the present invention, one or more alkanolamines selected from the group consisting of monoalkanolamines and dialkanolamines, more preferably one or more alkanolamines selected from the group consisting of monoethanolamine and diethanolamine, are used for detergency. Further preferred is monoethanolamine from the viewpoint.

<(d) component>

The component (d) is a carbonate. Specifically, a compound selected from the group consisting of a group consisting of an alkali metal hydrogencarbonate, an alkali metal carbonate, and an alkali metal sesquicarbonate may be mentioned. As the component (d), from the viewpoint of the stability of the polyoxyalkylene alkyl ether sulfate salt of the component (a), the sodium salt is preferred. The alkali metal salt is preferably a sodium hydrogencarbonate salt in terms of suppressing the salt strength of the system.

In the liquid detergent composition of the present invention, the detergency or storage stability can be improved by using the components (c) and (d) in combination.

The component (c) or the component (d) may also be used for the neutralization of the above component (a) or component (b). In view of the detergency and the low irritation of the skin of the hand, it is preferred that the pH of the liquid detergent composition of the present invention is at a pH of 9 to 11, preferably 9 to 10.5. More preferably, it is excellent in the range of 9.5 to 10. Therefore, it is preferred to combine, for example, a compound having a pKa at 25 ° C in the range of 8.5 to 10.6 in the component (c) or the component (d).

<(e) component>

The nonionic surfactant is not particularly limited, and for example, an alcohol having 10 or more carbon atoms and 18 or less is added to an average of 1 mol or more, further 2 mol or more, 12 mol or less, and further 4 mol. The following polyoxyalkylene alkyl ethers are formed from ethylene oxide. That is, as the nonionic surfactant, a polyoxyalkylene oxide obtained by adding an average of 1 to 12 moles, for example, 2 to 4 moles of ethylene oxide, of an alcohol having 10 to 18 carbon atoms is exemplified. Ether.

When the component (e) is contained, the content of the polyoxyalkylene alkyl ether obtained by adding an alcohol having 10 or more carbon atoms and 18 or less to an average of 1 mol or more and 12 mol or less of ethylene oxide The composition is preferably 0.3% by mass or more, further 0.5% by mass or more, and further preferably 1% by mass or more, more preferably 5% by mass or less, further 3% by mass or less, further 2.5% by mass or less, and further 2% by mass. the following.

Further, as the component (e), an alcohol having 10 or more carbon atoms and 18 or less carbon atoms may be contained. A polyoxyalkylene alkyl ether having an average of 14 moles or more and 30 moles or less of ethylene oxide. When the polyoxyalkylene alkyl ether having an average of 14 mol or more and 30 mol or less of an alcohol having a carbon number of 10 or more and 18 or less is added, the content is in the composition. The amount is preferably 0.2% by mass or more, further 0.4% by mass or more, and further preferably 0.7% by mass or more, more preferably 2.5% by mass or less, further 2% by mass or less, and further preferably 1.5% by mass or less.

<Liquid detergent composition>

In the liquid detergent composition of the present invention, the quality of the polyoxyalkylene alkyl ether sulfate salt/alkylbenzenesulfonate is preferably 70/30 or more, 100/0 or less, and further 75/25 or more. Further, it is 80/20 or more, further 90/10 or more, and further 95/5 or more.

In the liquid detergent composition of the present invention, the mass ratio of the polyoxyalkylene alkyl sulfate ether salt to the alkylbenzene sulfonate is 70/30 to 100/0, preferably 75/25 to 100. /0, more preferably 80/20~100/0, more preferably 90/10~100/0, more preferably 95/5~100/0, more preferably 100/0, ie, (a) component It may contain only a polyoxyalkylene alkyl ether sulfate salt and no alkylbenzenesulfonate. If it is in the range of the mass ratio, excellent detergency and rinsing properties can be obtained.

Further, in the liquid detergent composition of the present invention, the polyoxyalkylene alkyl sulfate ether sulfate is maintained from the viewpoint of maintaining moderate foaming, detergency and low temperature stability at the time of washing. The mass ratio of the component (b) is 3/1 or more, preferably 4/1 or more, more preferably 5/1 or more, still more preferably 6/1 or more, still more preferably 7/1 or more. Further, in the liquid detergent composition of the present invention, the mass ratio of the polyoxyalkylene alkyl sulfate ether salt/(b) component is 20/2 in terms of rapid defoaming property at the time of rinsing. 1 or less, preferably 16/1 or less, more preferably 13/1 or less, more preferably 11/1 or less, still more preferably 9/1 or less.

In the liquid detergent composition of the present invention, the polyoxyalkylene group is obtained from the viewpoints of satisfactory foaming property at the time of washing, rapid defoaming property at the time of washing, and detergency. The mass ratio of the alkyl ether sulfate salt/(b) component is from 3/1 to 20/1, preferably from 4/1 to 16/1, more preferably from 5/1 to 13/1, more preferably 6/. 1~11/1, more preferably 7/1~9/1.

Here, if the mass ratio of the polyoxyalkylene alkyl sulfate ether salt to the alkylbenzenesulfonate is 70/30 or more and 100/0 or less, and the polyoxyalkylene alkyl alkyl ether sulfate salt/( b) When the mass ratio of the components is 3/1 or more, the rapid defoaming property at the time of washing can be achieved. The reason for this is not necessarily clear, but the present inventors believe that it is based on the phenomenon shown below. That is, the particles have a large influence on the foaming property. Among them, hydrophobic particles of submicron to several micrometers play a large role in suppressing foaming. In the liquid detergent composition of the present invention, it is considered that the metal salt of the fatty acid precipitated by the combination of the fatty acid of the component (b) in the composition and the hardness component such as calcium contained in the tap water during washing is affected. Rapid defoaming during rinsing. It is known that in an anionic surfactant system in which the proportion of the alkylbenzenesulfonate is increased, the particle size of the metal salt of the precipitated fatty acid is about several tens to several hundreds of nanometers, and on the other hand, In the anionic surfactant system in which the proportion of the benzenesulfonate is small, it is easy to coarsen to a precipitate of several micrometers depending on the conditions. It is presumed that although there are various factors such as oil brought in by the clothes in the hand washing, the same phenomenon is caused. As a result, it is considered that even in the case of the above-mentioned small amount of fatty acid having a mass ratio of 3/1 or more, rapid defoaming property at the time of rinsing can be achieved.

The liquid detergent composition of the present invention is calculated by using sodium salt It is preferable that the component (a) contains 5% by mass or more, further 6% by mass or more, further 7% by mass or more, further 8% by mass or more, further 9% by mass or more, and further preferably 10.5% by mass or more. It is preferable to contain 40% by mass or less, further 30% by mass or less, further 20% by mass or less, further 16% by mass or less, and further 14% by mass or less of the component (a).

The liquid detergent composition of the present invention is preferably 5 to 40% by mass, further preferably 6 to 30% by mass, further 7 to 20% by mass, and further 8 to 16 based on the amount calculated by the amount of sodium salt. The component (a) having a mass %, further 9 to 14 mass%, and further 10.5 to 14 mass%.

The liquid detergent composition of the present invention is preferably 0.1% by mass or more, further 0.2% by mass or more, further 0.4% by mass or more, and further preferably 0.5% by mass or more, based on the amount calculated by the sodium salt. 0.6% by mass or more, further 0.7% by mass or more, further 0.8% by mass or more, and further 1% by mass or more of the component (b), and preferably 10% by mass or less, and further 5 masses from the viewpoint of foaming property % or less, further 4% by mass or less, further 3% by mass or less, further 2% by mass or less, and further 1.5% by mass or less of the component (b).

The liquid detergent composition of the present invention is preferably 0.1 to 10% by mass, further preferably 0.2 to 10% by mass, further preferably 0.4 to 5% by mass, and further 0.5 to 4, based on the amount calculated by the sodium salt. (b) component of mass%, further 0.6 to 3% by mass, further 0.7 to 2 mass%, and further preferably 0.8 to 1.5 mass%.

The liquid detergent composition of the present invention preferably contains 0.1% by mass or more and further 0.2% by mass or more of the component (c), and contains 1% by mass or more of the component (c) from the viewpoint of washing performance and rinsing property. And preferably contains 10% by mass In the viewpoint of the shielding effect of the amine odor, the component (c) having a content of 4% by mass or less is contained in the following, and the component (c) is further contained in an amount of 3% by mass or less. c) ingredients.

The liquid detergent composition of the present invention preferably contains 0.1 to 10% by mass, and further preferably 0.2 to 6% by mass of the component (c), and further contains 0.2 to 4% by mass in view of the shielding effect of the amine odor ( c) The component further contains 1 to 3% by mass of the component (c) from the viewpoint of the cleaning performance and the shielding effect.

The liquid detergent composition of the present invention is preferably contained in an amount of 0.5% by mass or more, further 1% by mass or more, further 1.5% by mass or more, and further preferably 1.7 % by mass or more, based on the amount calculated by the sodium salt. 2% by mass or more, further 2.5% by mass or more, and further preferably 3% by mass or more of the component (d), and preferably contains 10% by mass or less, further 8% by mass or less, further 6% by mass or less, and further 5% by mass or less. Further, it is 4% by mass or less of the component (d).

The liquid detergent composition of the present invention is preferably 0.5 to 10% by mass, further 1 to 8% by mass, further 1.5 to 6% by mass, and further 1.7 to 5, based on the amount calculated by the sodium salt. (%) by mass% and further 2 to 4% by mass.

The content of each component is selected within a range satisfying the above mass ratio.

The liquid detergent composition of the present invention preferably contains 6% by mass or more, further 8% by mass or more, and further preferably 10% by mass or more from the viewpoint of moderate foaming property and rapid defoaming property at the time of rinsing. Further, the components (a) and (b) of 12% by mass or more are preferably contained in an amount of 30% by mass or less, 25% by mass or less, further 20% by mass or less, and further preferably 16% by mass or less of the component (a) and b) ingredients. If the content is 6% by mass or more, it is obtained A composition which is more excellent in detergency and foaming property. On the other hand, if it is 30% by mass or less, a more excellent viscosity can be obtained and it can be quickly dissolved, dispersed, or more transparent by a washing liquid. Liquid composition.

The liquid detergent composition of the present invention preferably contains 6 to 30% by mass, further 8 to 25% by mass, and further 10 to 10, in terms of moderate foaming property and rapid defoaming property during rinsing. 20% by mass, and further 12 to 16% by mass of the components (a) and (b). When the content is 6% by mass or more, a composition having more excellent detergency and foaming property can be obtained. On the other hand, if it is 30% by mass or less, a more favorable viscosity can be obtained and can be obtained by The washing liquid dissolves rapidly, disperses, or has a more transparent liquid sensation composition.

In the liquid detergent composition of the present invention, the nonionic surfactant as the component (e) is, in particular, an alcohol having a carbon number of 10 or more and 18 or less, from the viewpoint of rapid defoaming property at the time of rinsing. The content of polyoxyalkylene alkyl ethers which are formed by adding an average of 1 mol or more to 12 mTorr of ethylene oxide is limited, and the component (e) is relative to the polyoxyalkylene alkyl ether sulfate salt. The ratio of the total amount of the component (e) is 40% by mass or less, further 35% by mass or less, further 30% by mass or less, further 25% by mass or less, further 20% by mass or less, further 15% by mass or less, and further 10% by mass. Hereinafter, it may be 5% by mass or less, and the component (e) may not be contained. Further, in the liquid detergent composition of the present invention, the mass ratio of the polyoxyalkylene alkyl sulfate ether sulfate/(e) component is 60/40 from the viewpoint of rapid defoaming property upon rinsing. 100/0, preferably 65/35~100/0, preferably 70/30~100/0, preferably 80/20~100/0, preferably 85/15~100/0, preferably It is 90/10~100/0, more preferably 95/5~100/0. Further, the content of the component (e) in the composition is preferably 3% by mass. 5% by mass or less, further 2% by mass or less, further 1.5% by mass or less, further 1% by mass or less, further 0.5% by mass or less, and further 0% by mass, that is, completely unmixed, that is, the liquid washing of the present invention The detergent composition may also contain no component (e).

In the liquid detergent composition of the present invention, the content of water is 100% by mass of the entire composition, that is, 30% by mass or more, further 40% by mass or more, and further 50% in the composition. The mass% or more is preferably 90% by mass or less, further preferably 85% by mass or less, and further preferably 80% by mass or less.

In the liquid detergent composition of the present invention, the content of water is 100% by mass of the total composition, that is, preferably 30 to 90% by mass, and further preferably 40 to 85% by mass in the composition. Further 50 to 80% by mass.

Further, the liquid detergent composition of the present invention may contain, as a component (f), a surfactant other than the component (a), the component (b) and the component (e), within a range not impairing the effects of the present invention. In the present invention, the proportion of the component (f) is preferably 20% by mass or less, further 10% by mass or less, and further 5% by mass or less based on the total amount of the surfactant.

The component (f) is not limited, and examples thereof include an amine oxide or a betaine. These functions have the function of accelerating the foaming agent as described in "The Project of Foam" (published by Techno Systems, Inc., 2005), so that the foaming power of the detergent composition of the present invention can be improved. In order to not impair the rinsing property, the accelerating foaming agent selected from the group consisting of amine oxides and betaine in the component (f), in particular, the accelerated foaming agent selected from the group consisting of amine oxides is preferably 5% by mass or less, and further 3 % by mass or less, further 1.5% by mass or less, and further 0.5 Below mass%.

Examples of the amine oxide include an alkyl group having a carbon number of 8 or more, further 12 or more, a carbon number of 18 or less, and further 14 or less, and an alkyl group having 1 to 3 carbon atoms, preferably a methyl group. Long-chain alkyl amine oxides, etc. Therefore, examples of the amine oxide include a long chain length alkyl group having a carbon number of 8 to 18, preferably 12 to 14, and a single long chain alkane having a carbon number of 1 to 3, preferably a methyl group. Base amine oxide and the like. As a betaine, a alkyl amidinopropyl betaine is mentioned. Among them, cocoamine propyl betaine composed of lauric acid propyl betainine or coconut oil having a carbon number of 12 is usually used. In particular, the content of the accelerated foaming agent selected from the above betaine in the composition is preferably 1.5% by mass or less, further 1% by mass or less, further 0.5% by mass or less, and further preferably 0.3% by mass or less.

Further, in the liquid detergent composition of the present invention, from the viewpoint of foaming and washing performance, it is preferred that the ratio of the component (a) to all the surfactants is 50% by mass or more, and further 60%. % or more, further 70% by mass or more, further 80% by mass or more, and 95% by mass or less, further 93% by mass or less, and further 90% by mass or less. Further, in the liquid detergent composition of the present invention, the ratio of the polyoxyalkylene alkyl ether sulfate salt to the total surfactant is preferably 40% by mass or more, from the viewpoint of the cleaning performance. 50% by mass or more, further 70% by mass or more, and 95% by mass or less, further 93% by mass or less, and further 90% by mass or less.

Further, in the liquid detergent composition of the present invention, from the viewpoint of foaming and washing performance, it is preferred that the ratio of the component (a) to all the surfactants is 50 to 95% by mass, and further 60. ~93% by mass, and further 70 to 90% by mass. Further, the liquid detergent composition of the present invention is based on the viewpoint of washing performance. In other words, the ratio of the polyoxyalkylene alkyl ether sulfate salt to the total surfactant is 40 to 95% by mass, further 50 to 93% by mass, and further 70 to 90% by mass.

The liquid detergent composition of the present invention is a pH measured at 25 ° C as described in JIS K3362:2008 8.3 from the viewpoint of the detergency, particularly the coating detergency and the low irritation of the skin of the hand. The value is 9 or more, preferably 9.3 or more, and more preferably 9.5 or more. On the other hand, it is 11 or less, preferably 10.5 or less, more preferably 10.2 or less, still more preferably 10 or less. That is, the pH is 9 to 11, preferably 9 to 10.5, more preferably 9.3 to 10.2, still more preferably 9.5 to 10. The pH value may be according to the kind or the amount of the ingredients to be formulated in the composition, in particular, the acid type compound of the alkylbenzenesulfonate, the component (b), the component (c), the component (d), or the blending amount. Adjustment, if necessary, can be adjusted with hydrochloric acid (such as 6 N-HCl), citric acid, p-toluenesulfonic acid (PTS), p-cumenesulfonic acid (PCS, p-cumenesulfonic acid) .

The liquid detergent composition of the present invention washes the liquid with water having a basicity = 65 CaCO ₃ mg / l and a pH of 7.15 in terms of rapid defoaming and washing performance, and mildness of the skin of the hand. The pH value measured at 25 ° C as described in JIS K3362:2008 8.3, which is diluted 200 times in the detergent composition, is preferably 8.5 or more, more preferably 8.7 or more, still more preferably 8.9 or more, and further More preferably, it is 9 or more, and is preferably 10.5 or less, more preferably 10.1 or less, further preferably 9.7 or less, and still more preferably 9.5 or less. That is, the pH is preferably 8.5 to 10.5, more preferably 8.7 to 10.1, still more preferably 8.9 to 9.7, still more preferably 9 to 9.5. The component (c) and the component (d) of the present invention are an alkali agent having a pKa suitable for imparting such a property, and such a property can be imparted to the composition by combining them.

Hereinafter, the method for measuring the alkalinity of the water used for the preparation of the water-diluted product (hereinafter, the alkalinity of the present invention is referred to as the one measured by the method) unless otherwise specified.

100 ml of test water was placed in a 200 ml beaker, and 0.15 ml of a bromocresol green-methyl red-ethanol solution (manufactured by Wako Pure Chemical Industries Co., Ltd.) was added as an indicator. When residual chlorine is present in the test water, a sodium thiosulfate solution (0.3 w/v%) is added to 100 ml of the test water in advance to remove residual chlorine. The solution was slowly stirred while titrating with 10 mmol/l of sulfuric acid until the color of the solution changed from blue to reddish purple. The alkalinity was calculated by the following formula.

Alkalinity (CaCO ₃ mg/l) = a × 10 Here, a is 10 mmol/l of sulfuric acid (ml) required for titration.

When the coloring sample or the like is not marked by the discoloration of the indicator, a pH meter is used instead of the indicator, and the amount of 10 mmol/l of sulfuric acid (ml) required to reach a pH of 4.8 is set to a.

Further, the liquid detergent composition of the present invention dilutes the liquid detergent composition by 200 times with water having a basicity = 65 CaCO ₃ mg/l and a pH of 7.15 from the viewpoint of rapid defoaming. In the diluted water of the water, the pH value measured at 25 ° C in JIS K3362:2008 8.3, which is 1 g of the above-mentioned water dilution, is preferably 8.5 or more, and further 8.8 or more, and further 9 or more and 9.2 or more, on the other hand, it is preferably 11 or less, further 10 or less, and further 9.5 or less. That is, the pH is preferably 8.8 to 11, further 9 to 10, and further 9.2 to 9.5. The component (c) and the component (d) of the present invention are an alkali agent having a pKa suitable for imparting such a property, and such a property can be imparted to the composition by combining them. Further, the reason for using hydrochloric acid is to assume that there is acidic dirt such as sweat or sebum.

The liquid detergent composition of the present invention is a polyoxoalkylene ether sulfate salt/alkylbenzenesulfonate in a specific component (a), a polyoxyalkylene ether sulfate salt The component (c) and the component (d) are combined in a mass ratio of (b) to provide excellent detergency in the washing of the clothing or the like, and exhibit excellent performance in both foaming property and rinsing property.

As other components which can be formulated in the liquid detergent composition of the present invention, for example, it can be adjusted: nitrogen triacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, di-ethyltriamine pentaacetic acid, diol Amine polyacetic acid such as ether diamine tetraacetic acid, hydroxyethyl iminodiacetic acid, triethylidene tetraamine hexaacetic acid, melamine acid or the like, diglycolic acid, oxydisuccinic acid, carboxy An organic acid such as methyl oxysuccinic acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, oxydisuccinic acid, gluconic acid, carboxymethyl succinic acid or carboxymethyl tartaric acid or a chelating agent such as a salt thereof; A chelating agent having a molecular weight of 1,000 or less is preferred. The content of the chelating agent is preferably 0.001% by mass or more, further preferably 0.01% by mass or more, and further preferably 0.03% by mass or more, more preferably 10% by mass or less, further 3% by mass or less, and further preferably 1% by mass or less. Therefore, the content of the chelating agent is preferably 0.001 to 10% by mass, 0.01 to 3% by mass, and 0.03 to 1% by mass in the composition.

In addition, a water-miscible organic solvent (hereinafter referred to as component (g)) may be contained for the purpose of improving the solution stability or transparency of the detergent composition. In the present invention, the term "water-miscible organic solvent" means an ion at 25 ° C. The solvent in which 1 g of the exchanged water is dissolved in 50 L or more, that is, a solvent having a degree of dissolution of 50 g/L or more. From the viewpoint of improving the stability of the solution and the transparency, the content of the component (g) is preferably 0.1% by mass or more, further 0.3% by mass or more, further 0.5% by mass or more, and further preferably 1% by mass or more. 1.5% by mass or more, further 2% by mass or more, and 40% by mass or less, further 20% by mass or less, further 10% by mass or less, and further 5% by mass or less. Therefore, from the viewpoint of improving the stability of the solution and the transparency, the content of the component (g) is preferably from 0.1 to 40% by mass, further preferably from 0.3 to 40% by mass, and further preferably from 0.5 to 40% by mass. Further, it is 1 to 20% by mass, further 1.5 to 10% by mass, and further 2 to 5% by mass.

Examples of the component (g) include (g1) an alcohol such as ethanol, 1-propanol, 2-propanol or 1-butanol; and (g2) a glycol such as propylene glycol, butanediol or hexanediol; (g3) glycols such as diethylene glycol, triethylene glycol, tetraethylene glycol, dipropylene glycol, and tripropylene glycol; (g4) diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, and triethylene glycol Alcohol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, tripropylene glycol monomethyl ether, propylene glycol monomethyl ether, propylene glycol monoethyl ether, 1-methyl glycerol Ether, 2-methyl glyceryl ether, 1,3-dimethyl glyceryl ether, 1-ethyl glyceryl ether, 1,3-diethyl glyceryl ether, triethyl glyceryl ether, 1-pentyl glyceryl ether, 2 - alkyl ethers such as amyl glyceryl ether, 1-octyl glyceryl ether, 2-ethylhexyl glyceryl ether, diethylene glycol monobutyl ether (also known as butoxydiethylene glycol); (g5) Alkyl diol ether, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, aromatic polyethylene glycol monophenyl ether with an average molecular weight of about 480, ethylene glycol benzyl ether, diethylene glycol monobenzyl ether, etc. Ethers.

Water-miscible organic solvent as a viscosity adjuster and gel for the composition The inhibitor is effective, and one or more selected from the group consisting of the above (g1) alkanols, (g2) glycols, (g4) alkyl ethers, and (g5) aromatic ethers are preferably used. The (g2) glycol, the (g4) alkyl ether, and the (g5) aromatic ether are more preferably (g4) alkyl ethers, more preferably diethylene glycol monobutyl ether. The component (g) is effective for viscosity adjustment or gelation inhibition.

As the other components which can be blended in the liquid detergent composition of the present invention, the components shown in the following (i) to (xiii) can be blended to the extent that the effects of the present invention are not impaired.

(i) polyacrylic acid, polymaleic acid, carboxymethylcellulose, polyethylene glycol having a weight average molecular weight of 5,000 or more, maleic anhydride-diisobutylene copolymer, maleic anhydride-methylethylene The base ether copolymer, the maleic anhydride-vinyl acetate copolymer, the naphthalene sulfonate formaldehyde polycondensate, and the patent application scope of the Japanese Patent Laid-Open No. 59-62614 (1, 3, 5 lines) ~3 page, 4 columns, 14 rows) The re-contamination preventing agent and dispersing agent such as the polymer described above are preferably polyacrylic acid, polymaleic acid or the like, more preferably polyacrylic acid or a salt thereof 0.1~ 10% by mass, preferably 0.5 to 5% by mass, more preferably 1 to 3% by mass

(ii) Transfection inhibitors such as polyvinylpyrrolidone

(iii) bleaching agents such as hydrogen peroxide, sodium percarbonate and sodium perborate

(iv) a bleach activator such as a bleach activator represented by the formula (I-2) to (I-7) of tetraethylguanidinium diamine, and Japanese Patent Laid-Open No. Hei 6-316700

(v) Cellulase, amylase, pectinase, protease, lipase and other enzymes

(vi) Boron compound, calcium ion source (calcium ion supply compound), hydroxy compound, enzyme stabilizer such as formic acid

(vii) a fluorescent dye, for example, a fluorescent dye commercially available as Tinopal CBS (trade name, manufactured by Ciba Specialty Chemicals) or Whitex SA (trade name, manufactured by Sumitomo Chemical Co., Ltd.)

(viii) antioxidants such as butylhydroxytoluene, distyrenated cresol, sodium sulfite and sodium hydrogen sulfite

(ix) Dissolving agents such as p-toluenesulfonic acid, cumenesulfonic acid, m-xylenesulfonic acid, and benzoate (which also have an effect as a preservative)

(x) Polyalkylene glycol gelation preventing polymer such as polyethylene glycol having an average molecular weight of from about 200 to about 400, polypropylene glycol having an average molecular weight of from about 1,000 to about 2,000

(xi) alkane such as octane, decane, dodecane or tridecane, olefin such as terpene or dodecene, halogenated alkane such as dichloromethane or 1,1,1-trichloroethane, D- A water-immiscible organic solvent such as limonene.

(xii) metal ion exchangers such as zeolite or crystalline layered silicate

(xiii) other defoamers such as pigments, perfumes, antibacterial preservatives, and ketones

The liquid detergent composition of the present invention is prepared by, for example, adding a component (c) and optionally a component (g) to ion-exchange water heated to a specific temperature, that is, at about 80 °C. If necessary, a strong base such as sodium hydroxide is added in advance at this stage. Next, the acid-type compound of the alkylbenzenesulfonate in the component (a) and the component (b) of the acid form are added and mixed until transparent, and then the component (d) and the component (a) are added. A specific amount of polyoxyalkylene alkyl ether sulfate salt. The liquid detergent composition can be produced by appropriately adding other components, cooling to room temperature, and adding a fragrance or a coloring matter.

The liquid detergent composition of the present invention is suitable for use in washing applications in the home, and further in hand washing, and can be preferably used for clothing, cloth, and bed. Hand wash with fiber products such as towels and towels.

The present invention relates to a hand washing method for hand-washing a washed product which is in contact with a washing water comprising the liquid detergent composition of the present invention. As a hand washing method using the liquid detergent composition of the present invention, the washing water containing the liquid detergent composition of the present invention is contacted and immersed in a laundry such as a cloth to be hand-washed. The method. If the contact time or the immersion time is long, the washing effect is high, and if it is contacted or immersed for 5 to 15 minutes, a better effect can be obtained. If the composition is directly applied to the soiled portion and left for 5 to 15 minutes, a higher effect can be obtained.

The wash water in the hand wash method utilizes a water dilution (e.g., an aqueous solution) of the composition or composition of the present invention. The water used here is usually tap water, and the tap water of countries represented by Japan usually has alkalinity (buffer energy). However, the liquid detergent composition of the present invention can be maintained as if it is diluted by a tap water having a basicity, and can maintain a pH of 8.5 to 10.5 in excess of the buffer energy of the tap water. Excellent cleaning performance. The mass of the washing water is preferably 2 times or more, further 3 times or more, and further 5 times or more, and more preferably 100 times or less, further 50 times or less, and further 25 times the mass of the washed matter such as cloth. Less than the following. Therefore, the quality of the washing water is preferably 2 to 100 times, more preferably 3 to 50 times, and still more preferably 5 to 25 times, relative to the mass of the laundry such as cloth. When the washed matter such as the cloth which is in contact with the washing water of the present invention is sufficiently washed with a hand, not only a high cleaning power but also sufficient foaming can be obtained, so that it is visually preferable.

Remove the fabric from the wash water after washing, wring out the water or use a dehydrator The water is dried and immersed in fresh water [hereinafter referred to as rinse water]. The flushing water may be water accumulated in a washbasin or the like, or may be flowing water. The amount of the rinse water relative to the mass of the cloth is preferably 2 times or more, further 5 times or more, further 10 times or more, and preferably 1,000 times or less, and further 500 times or less, based on the total amount of the flushing water used for washing. Further 100 times or less. Therefore, the rinse water is preferably 2 to 1,000 times, more preferably 5 to 500 times, still more preferably 10 to 100 times, based on the total mass of the rinse water used for the rinse. At the stage of immersing the rinse water, the surfactant or the like remaining on the fabric is dissolved again in the rinse water, so that foaming can be observed. If the operation is repeated several times, the foaming disappears and the flushing ends.

Regarding the general washing by hand washing, for example, in the case of using a usual detergent, the foam generated during washing does not disappear, so it is generally necessary to wash 5 times or more, but the present invention can be washed by 3 times or less. At the end of the rinse, the rinse can be finished with very little rinse water without wasting water.

In the liquid detergent composition of the present invention, at least one of the hardness of the water used for the preparation of the washing water and the hardness of the rinse water may be 1 ° DH from the viewpoint of the detergency and the rinsing property. The above is further 2°DH or more, further 3°DH or more, further 4°DH or more, and preferably 50°DH or less. Therefore, in terms of the detergency and the rinsing property, at least one of the hardness of the water used for the preparation of the washing water and the hardness of the rinsing water is preferably 1°DH to 50°DH, more preferably 2 °DH~50°DH, more preferably 3°DH~50°DH, more preferably 4°DH~50°DH, more preferably 8°DH~50°DH.

[Second embodiment]

An example of the aspect included in the present invention is described as a second embodiment. Bright. The composition of the present invention as the second embodiment can be exemplified below.

A liquid detergent composition comprising (a) an anionic surfactant selected from the group consisting of polyoxyalkylene alkyl alkyl ether sulfate salts and alkylbenzene sulfonates 5~ 40% by mass, (b) a fatty acid and/or a salt thereof, (c) an alkanolamine, (d) a carbonate, (e) a nonionic surfactant, and a water, and a polyoxyalkylene alkyl ether The mass ratio of the sulfate salt to the alkylbenzenesulfonate is 70/30 to 100/0, and the mass ratio of the polyoxyalkylene alkyl sulfate ether sulfate/(b) is 3/1 to 20/1. The mass ratio of the alkylene alkyl ether sulfate salt (e) is 60/40 to 100/0, and (b) the fatty acid having a carbon number of 12 to 14 and/or its salt, and the carbon number of 16 to 18 The fatty acid and/or its salt is a pH of 9 to 11 measured at 25 ° C as described in JIS K3362:2008 8.3 of the liquid detergent composition.

Here, the fatty acid having 12 to 14 carbon atoms and/or its salt is referred to as a C _12-14 fatty acid. Further, a fatty acid having 16 to 18 carbon atoms and/or a salt thereof is referred to as a C _16-18 fatty acid.

The liquid detergent composition containing the C _12-14 fatty acid and the C _16-18 fatty acid as the component (b) is excellent in detergency, foaming property, and rinsing property, and is considered to have low temperature storage stability. The stability of the composition is also preferred.

To the second aspect of the embodiment, the fatty acid C _{16 ~ 18} with respect to the mass ratio of C _{12 to 14} fatty acids, the fatty acids, i.e., C _{16 ~ 18/12 to} C ₁₄ fatty acid in mass ratio is preferably 1/99 or more, and further 4/96 The above, furthermore, 8/92 or more, further 12/88 or more, and further 18/82 or more, and preferably 60/40 or less, further 50/50 or less, further 40/60 or less, further 30/70 or less, and further 25/ 75 or less. Therefore, the mass ratio of the C _16-18 fatty acid/C _12-14 fatty acid is preferably from 1/99 to 60/40, more preferably from 4/96 to 50/50, from the viewpoint of improvement in low-temperature storage stability. More preferably, it is 8/92~40/60, more preferably 12/88~30/70, and further preferably 18/82~25/75.

Further, in the second embodiment, the C _12-14 fatty acid is preferably a fatty acid having 12 carbon atoms and/or a salt thereof. Here, the fatty acid having 12 carbon atoms and/or its salt is referred to as a C ₁₂ fatty acid. Further, a fatty acid having a carbon number of 14 and/or a salt thereof is referred to as a C ₁₄ fatty acid. In the second embodiment aspect, preferably comprising a C ₁₂ fatty acid as component (b), and the C ₁₂ fatty acid to total fatty acids of _{12 to 14} C, the proportion is preferably 50% by mass or more, and further 60 mass % or more, and preferably 95% by mass or less, and further 90% by mass or less. Further, when at containing C ₁₂ fatty acid and C ₁₄ fatty acids as the case of component (b), the content ₁₂ fatty acids of C with respect to the mass ratio of the content of _C14 fatty acids of C, i.e., C ₁₂ fatty acid / C ₁₄ fatty acid in mass Cryopreservation than on From the viewpoint of improvement in stability, it is preferably 3.5/1 or more, more preferably 4/1 or more.

In the second embodiment, the C _12-14 fatty acid is preferably a linear fatty acid and/or a salt thereof, and is preferably a saturated fatty acid and/or a salt thereof. Further, the C _16-18 fatty acid is preferably a linear fatty acid and/or a salt thereof, and is preferably a saturated fatty acid and/or a salt thereof. The C _12-14 fatty acid preferably contains a fatty acid having a carbon number of 12 and/or a salt thereof, specifically, lauric acid and/or a salt thereof. Further, the C _16-18 fatty acid preferably contains a fatty acid having 16 carbon atoms and/or a salt thereof, specifically palmitic acid and/or a salt thereof.

Further, in the second embodiment, the fatty acid having a carbon number of 12 and/or a salt thereof is a C _12-14 fatty acid, and a fatty acid having a carbon number of 16 and/or a salt thereof is used as a C _16-18 fatty acid, C _{12~ In} the total of the content of the ₁₄ fatty acid and the C _16-18 fatty acid, the ratio of the total content of the fatty acid having a carbon number of 12 and/or its salt to the fatty acid having a carbon number of 16 and/or a salt thereof is preferably 70% by mass or more, and further 80% by mass or more, further 90% by mass or more, and further 95% by mass or more, and may be 100% by mass.

In the second embodiment, the mass ratio of the polyoxyalkylene alkyl ether sulfate salt to the alkylbenzenesulfonate may be 70/30 or more, further 75/25 or more, and further 80/20 or more. 85/15 or more, and may be 99/1 or less, further 98/2 or less, further 95/5 or less, and further 90/10 or less. That is, in the second embodiment, the mass ratio of the polyoxyalkylene alkyl ether sulfate salt to the alkylbenzenesulfonate may be 70/30 to 99/1, preferably 75/25 to 98. / 2, more preferably 80/20 to 95/5, and further preferably 85/15 to 90/10.

In the second embodiment, the mass ratio of the polyoxyalkylene alkyl sulfate ether salt/(e) component is 60/40 or more, preferably from the viewpoint of rapid defoaming property at the time of rinsing. 65/35 or more, further 70/30 or more, further 80/20 or more, further 85/15 or more, and 100/0 or less, from the viewpoint of low-temperature stability of the composition, it is preferably 99/1 or less. Further, it is 98/2 or less, further 97/3 or less, and further 95/5 or less. That is, in the second embodiment, the mass ratio of the polyoxyalkylene alkyl ether sulfate salt/(e) component is 60/40 to 100/0, preferably 60/40 to 99/1. Good for 65/35~99/1, preferably 70/30~98/2, It is preferably 80/20 to 97/3, more preferably 85/15 to 95/5. Here, as the component (e), an alcohol having a carbon number of 10 or more and 18 or less may be added to an average of 1 mole or more, further 4 moles or more, further 6 moles or more, 25 moles or less, and further 12 moles. In the following, a polyoxyalkylene alkyl ether having 10 mol or less and further 8 mol or less of ethylene oxide is used.

In order to maintain excellent rinsing properties, the liquid detergent composition of the second embodiment preferably uses a C _12-14 fatty acid and a C _16-18 fatty acid as the component (b) and contains the component (e). When the liquid detergent composition of the second embodiment contains the component (e), the content of the component (e) in the composition is preferably 0.3% by mass or more, further 0.5% by mass or more, and further 1% by mass. It is preferably 3% by mass or less, further 2.5% by mass or less, and further preferably 2% by mass or less. In other words, the liquid detergent composition of the second embodiment may contain 0.3 to 3% by mass, further 0.5 to 2.5% by mass, and further 1 to 2% by mass of the component (e).

In the second embodiment, in addition to the above conditions, the preferred aspects of the components, the contents, and the like are as described above, and thus the description thereof is omitted.

Hereinafter, a more specific aspect of the present invention will be exemplified.

<1> A liquid detergent composition comprising (a) an anionic interface activity selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzenesulfonates The agent is 5 mass% or more, further 6 mass% or more, further 7 mass% or more, further 8 mass% or more, further 9 mass% or more, further 10.5 mass% or more, 40 mass% or less, further 30 mass% or less, and further 20 mass. % or less, further 16 mass% or less, further 14 mass% or less, that is, 5 to 40% by mass, further 6 to 30% by mass, further 7 to 20% by mass, further 8 to 16% by mass, and further 9 to 14% by mass And then 10.5~14 Amount, (b) fatty acid and/or its salt, (c) alkanolamine, (d) carbonate, (e) nonionic surfactant, and water, and polyoxyalkylene alkyl ether sulfate The mass ratio of the ester salt to the alkylbenzene sulfonate is 70/30 to 100/0, preferably 75/25 to 100/0, more preferably 80/20 to 100/0, still more preferably 90/10. 100/0, more preferably 95/5~100/0, more preferably 100/0, polyoxyalkylene alkyl ether sulfate/(b) mass ratio is 3/1~20/1, compared Preferably, it is 4/1~16/1, more preferably 5/1~13/1, more preferably 6/1~11/1, more preferably 7/1~9/1, polyoxyalkylene alkyl group The mass ratio of the ether sulfate salt/(e) is 60/40 to 100/0, preferably 65/35 to 100/0, more preferably 85/15 to 100/0, and the above liquid detergent composition The pH value measured at 25 ° C as described in JIS K 3362:2008 8.3 is 9 or more, 11 or less, that is, 9 to 11, preferably 9 to 10.5, more preferably 9.3 to 10.2, and still more preferably 9.5 to 10. .

<2> A liquid detergent composition comprising (a) an anionic interface activity selected from the group consisting of polyoxyalkylene alkyl alkyl ether sulfate salts and alkylbenzenesulfonates The agent is 5 mass% or more, further 6 mass% or more, further 7 mass% or more, further 8 mass% or more, further 9 mass% or more, further 10.5 mass% or more, 40 mass% or less, further 30 mass% or less, and further 20 mass. % or less, further 16 mass% or less, further 14 mass% or less, that is, 5 to 40% by mass, further 6 to 30% by mass, further 7 to 20% by mass, further 8 to 16% by mass, and further 9 to 14% by mass Further, 10.5 to 14% by mass, (b) a fatty acid and/or a salt thereof, (c) an alkanolamine, (d) a carbonate, (e) a nonionic surfactant, and water, and a polyoxyalkylene The mass ratio of the alkyl ether ether sulfate salt to the alkylbenzenesulfonate is 70/30~100/0, preferably 70/30~99/1, more preferably 75/25~98/2, further preferably 80/20~95/5, and further preferably 85/15~ 90/10, polyoxyalkylene alkyl ether sulfate salt / (b) mass ratio of 3 / 1 ~ 20/1, polyoxyalkylene alkyl ether ether sulfate / (e) mass ratio is 60/40~100/0, (b) a fatty acid having a carbon number of 12 to 14 and/or a salt thereof, and a fatty acid having a carbon number of 16 to 18 and/or a salt thereof, and the above liquid detergent composition JIS K3362: The pH value measured at 25 ° C as described in 2008 8.3 is 9-11.

<3> The liquid detergent composition according to the above <2>, wherein the fatty acid having a carbon number of 12 to 14 and/or a salt thereof is a fatty acid having a carbon number of 12 and/or a salt thereof.

<4> The liquid detergent composition according to the above <2> or <3>, wherein a fatty acid having a carbon number of 12 to 14 and/or a salt thereof is referred to as a C _12-14 fatty acid, and a fatty acid having a carbon number of 16 to 18 is used. And/or its salt is recorded as a C _16-18 fatty acid, and the quality of the C _16-18 fatty acid/C _12-14 fatty acid is preferably 1/99 or more, further 4/96 or more, further 8/92 or more, and further 12/88. The above is further 18/82 or more, and preferably 60/40 or less, further 50/50 or less, further 40/60 or less, further 30/70 or less, and further 25/75 or less, that is, C _16-18 fatty acid/C. The quality of _12~14 fatty acids is preferably 1/99~60/40, more preferably 4/96~50/50, more preferably 8/92~40/60, and even better 12/88~30/70. Further preferably, it is 18/82 to 25/75.

The liquid detergent composition according to any one of <2> to <4> wherein the mass ratio of the polyoxyalkylene alkyl ether ether sulfate salt/(e) component is 60/40 or more. Further, 65/35 or more, further 70/30 or more, and further 80/20 or more And 85/15 or more, and 99/1 or less, further 98/2 or less, further 97/3 or less, and further 95/5 or less, that is, the quality of the polyoxyalkylene alkyl ether sulfate salt/(e) component The ratio is 60/40~99/1, and then 65/35~99/1, and then 70/30~98/2, and then 80/20~97/3, and further 85/15~95/5.

<6> above <2> to <5> liquid detergent composition according to any one of, wherein the fatty acid having 12 carbon atoms and / or salts thereof, referred to as C ₁₂ fatty acid, a fatty acid carbon number of 14, and / or a salt thereof, referred to as C ₁₄ fatty acid, fatty acid and comprising a C ₁₄ C ₁₂ fatty acid as component (b), the content of C ₁₂ fatty acid in a mass ratio of the fatty acid content of ₁₄ C, the fatty acid C ₁₂ / C ₁₄ fatty acid is 3.5 / 1 or more, and further 4/1 or more.

The liquid detergent composition according to any one of <2> to <6> wherein the fatty acid having 12 to 14 carbon atoms and/or its salt is referred to as a C _12-14 fatty acid having a carbon number of 16 Fatty acid and/or its salt of _{~18 is} referred to as a C _16-18 fatty acid, a fatty acid having a carbon number of 12 and/or a salt thereof as a C _12-14 fatty acid, and a fatty acid having a carbon number of 16 and/or a salt thereof as C _{16 ~18} fatty acid, in the total content of C _12-14 fatty acid and C _16-18 fatty acid, the ratio of the total content of the fatty acid and/or its salt of carbon number 12 to the fatty acid of carbon number 16 and / or its salt It is preferably 70% by mass or more, further 80% by mass or more, further 90% by mass or more, and further 95% by mass or more, and may be 100% by mass.

The liquid detergent composition according to any one of the above-mentioned items, wherein (a) is an alkyl group having 10 or more carbon atoms, further 12 or more and 20 or less, and further preferably 14 or less. The polyoxyalkylene alkyl ether sulfate salt having an average addition molar number of the alkoxy group is 0 or more, further more than 0, further 0.5 or more, further 1 or more and 5 or less, further 4 or less, and further 3 or less. Specifically, The alkyl group having a carbon number of 10 to 20, preferably 12 to 14, and the average addition molar number of the alkoxy group is 0 to 5, preferably 0.5 to 4, and more preferably 1 to 3 Oxyalkylene alkyl ether ether sulfate salt.

<9> The liquid detergent composition according to the above <1> or <8>, wherein (b) is a fatty acid having 10 or more carbon atoms, further 12 or more, and having a carbon number of 18 or less and further 14 or less, that is, a carbon number of 10 ~18, preferably a fatty acid having a carbon number of 12-14.

<10> The liquid detergent composition according to the above <1> or <8> or <9>, wherein (b) comprises a fatty acid having a carbon number of 12 to 14 and/or a salt thereof, and a fatty acid having a carbon number of 16 to 18 And / or its salt.

The liquid detergent composition according to any one of the above-mentioned <1>, wherein the content of (b) is 0.4% by mass or more, further 0.5% by mass or more, further 0.6% by mass or more, and further 0.7. 5% by mass or more, further preferably 0.8% by mass or more, further 5% by mass or less, further 4% by mass or less, further 3% by mass or less, further 2% by mass or less, and further 1.5% by mass or less, that is, preferably 0.4 to 5 mass. More preferably, it is 0.5 to 4% by mass, more preferably 0.6 to 3% by mass, still more preferably 0.7 to 2% by mass, still more preferably 0.8 to 1.5% by mass.

The liquid detergent composition according to any one of the above-mentioned <1>, wherein (c) is a pKa at 25 ° C of 8.5 or more, further 8.7 or more, further 9 or more and 10.6 or less, and further 10 or less, further 9.6 or less, that is, an alkanolamine in the range of 8.5 to 10.6, further 8.7 to 10, and further 9 to 9.6 is preferably a monoalkanolamine, more preferably monoethanolamine.

The liquid detergent composition according to any one of <1> to <12> wherein (d) is selected from the group consisting of alkali metal hydrogencarbonate, alkali metal carbonate, and alkali metal sesquicarbonate. One or more compounds in the group.

The liquid detergent composition according to any one of <1> to <13> wherein (d) is a sodium hydrogencarbonate salt.

The liquid detergent composition according to any one of the above-mentioned <1>, wherein (e) is an average of 1 mol or more of the alcohol having 10 or more carbon atoms and 18 or less carbon atoms, and further 2 mol a polyoxyalkylene alkyl ether formed from ethylene oxide of less than 12 mils and further less than 4 moles, that is, an average of 1 to 12 moles of alcohol having a carbon number of 10 to 18 is added. A polyoxyalkylene alkyl ether which is preferably 2 to 4 moles of ethylene oxide.

The liquid detergent composition according to any one of <1>, wherein the content of (e) in the composition is 3% by mass or less, preferably 2.5% by mass. The amount is preferably 2% by mass or less, more preferably 1% by mass or less, further preferably 0.1% by mass or less, and further preferably 0% by mass.

The liquid detergent composition according to any one of <1> to <16> wherein the content of one or more accelerated foaming agents selected from the group consisting of amine oxides and betaine is in all surfactants. It is 5 mass% or less, preferably 3% by mass or less, and more preferably 1.5 mass% or less.

The liquid detergent composition according to any one of the above <1> to <17> wherein the liquid detergent composition is used with water having a basicity of 65 CaCO ₃ mg/l and a pH of 7.15. JIS K3362: diluted in water of 200 times, the pH value measured at 25 ° C as described in 8.3 of 2008 is 8.5 or more, further 8.7 or more, further 8.9 or more, further 9 or more, and 10.5 or less, further 10.1 or less, and further 9.7 or less and further 9.5 or less, that is, the pH is preferably 8.5 to 10.5, preferably 8.7 to 10.1, more preferably 8.9 to 9.7, still more preferably 9 to 9.5.

<19> A hand-washing method for hand-washing a washed product which is in contact with the washing water containing the liquid detergent composition according to any one of the above <1> to <18>, and washing water The mass is 2 to 100 times the mass of the object to be washed.

<20> The hand-washing method according to the above <19>, wherein at least one of the hardness of the water used for the preparation of the washing water and the hardness of the washing water is 1°DH or more, further 2°DH or more, and further 3°. DH or more, further 4°DH or more and 50°DH or less, that is, 8°DH to 50°DH.

Example

The following examples are illustrative of the practice of the invention. The examples are intended to be illustrative of the invention and are not intended to limit the invention.

The liquid detergent compositions shown in Tables 1 and 2 were prepared using the following components, and the foaming property, rinsing property, and detergency were evaluated by the following methods. The results are shown in Tables 1 and 2.

<mixing ingredients>

̇ AES-Na (EO=2): polyoxyethylene (average addition molar number is 2) sodium lauryl ether sulfate, Emal 270J (manufactured by Kao Corporation)

LAS LAS-Na: sodium dodecylbenzene sulfonate, Neoplex G-15 (made by Kao Corporation)

̇ Lauric acid: Lunac L-98 (made by Kao Co., Ltd.)

肉 Myristic acid: Lunac MY-98 (made by Kao Co., Ltd.)

̇ Palmitic acid: Lunac P-95 (made by Kao Co., Ltd.)

̇ Stearic acid: Lunac S-98 (made by Kao Co., Ltd.)

椰子 Coconut oil fatty acid: Lunac L-55 (made by Kao Co., Ltd., The fatty acids having carbon numbers 12, 14, and 16 are the main constituent fatty acids. The quality of each fatty acid in coconut oil fatty acids is as follows. Fatty acid having a carbon number of 10: 1% by mass, fatty acid having a carbon number of 12: 57% by mass, fatty acid having a carbon number of 14: 22% by mass, fatty acid having a carbon number of 16: 10% by mass, saturated fatty acid having a carbon number of 18: 3% by mass . Carbon number 18 unsaturated fatty acid: 7 mass%)

烷基 Alkylaminopropyl betaine: Amphitol 20HD (made by Kao Co., Ltd.)

̇ AE (EO=7): polyoxyethylene alkyl ether obtained by adding an average of 7 moles of ethylene oxide to an alcohol of 10 to 14 carbon atoms.

̇ AE (EO=20): a polyoxyethylene alkyl ether obtained by adding an average of 20 moles of ethylene to 20 moles of ethylene oxide.

̇ Sodium polyacrylate: Weight average molecular weight 8000, oligomer D (manufactured by Kao Corporation)

<Method for preparing underwear for evaluation>

In the washing machine (manufactured by Panasonic, NA-F70PB1 '2008), 2.5 kg of commercially available underwear (manufactured by Gunze Co., Ltd. (YG1614 round neckline L size) is used for hard water having a water temperature of 20 ° C and a calcium carbonate equivalent of 89.5 mg / L. Cotton 100%)] Washing was repeated 5 times to remove the treatment agent. The washing conditions were 54 L of water, 12 minutes of washing, twice of ordinary washing, and 5 minutes of dehydration. At this time, a nonionic surfactant is mixed at a mass ratio of 1:1:3 at 0.5 g/L (the average amount of the alkyl group containing the carbon number 12 is 6 mol of the oxyethylene group). ), amorphous sodium citrate, sodium carbonate. Thereafter, hard water of 89.5 mg/L in terms of calcium carbonate was used at a water temperature of 20 ° C, and water-washing was carried out in a two-tank washing machine (manufactured by HITACHI, PS-H35L '2008).

The washing was performed until the foam disappeared completely after the rinsing was stopped, and the removal treatment agent and the washing component were dried by natural drying and used as an evaluation underwear.

(1) Evaluation of foaming

In a model round wash basin (a cylindrical acrylic container with a diameter of 25 cm and a height of 15 cm), the injection water temperature is 20 ° C, and it is 179 mg/L in terms of calcium carbonate (this hard water is equivalent to German hardness) 10°DH), hard water with a basicity of 65 CaCO ₃ mg/l and a pH of 7.15 [in calcium chloride (CaCl ₂ .2H ₂ O) 1.57 g, magnesium sulfate (MgSO ₄ .6H ₂ O) 1.45 g and hydrogen carbonate) Ion-exchanged water was added to 1.6 g of sodium to make it 10 L and adjusted with hydrochloric acid, and Ca/Mg = 6/4 (mole ratio)] 3 L. 20 g of the liquid detergent composition was added thereto and dissolved. Then, the evaluation was carried out by heating the adjustment oil as shown below (60 ° C) and dropping it on the neckline by using a dropper (φ: 2 mm) in a manner of 3 pieces of 1 g (about 0.33 g per piece). In the underwear, it was left to stand in the state of being completely immersed in the washing liquid for 15 minutes. After standing for 15 minutes, each piece of underwear was rinsed 50 times (cloth and cloth, and 1 round trip (about 1 second) was converted into 1 time). Thereafter, the underwear was taken out, and the water content of the underwear was squeezed over 10 cm from the wash basin in a manner of about 100 to 140% with respect to the underwear, and the state of the washing liquid surface shortly after the three pieces were squeezed was measured. Attach a point according to the following criteria.

point

6: Foam covering the entire surface of the foam with a height of 2 cm or more

5: Foam covering the entire surface of the foam with a height of 1 cm or more

4: Foam covering liquid level with a foam height of 0.7 cm or more and less than 1.0 cm

3: Foam covering liquid level with a foam height of 0.4 cm or more and less than 0.7 cm

2: Foam with a foam height of 0.2 cm or more and less than 0.4 cm expands to the whole

1: foam height is less than 0.2 cm

*Adjust oil

The following were used as the adjustment oil: 1% by mass of lauric acid, 7.1% by mass of myristic acid, 5.3% by mass of pentadecanoic acid, 14.2% by mass of palmitic acid, 1% by mass of heptadecanoic acid, 3.6% by mass of stearic acid, and oil. 17.8% by mass of an acid, 30% by mass of triolein, 5% by mass of n-hexadecyl palmitate, and 15% by mass of squalene were heated to about 60 ° C and uniformly dissolved and mixed.

(2) Rinse evaluation

In a model round wash basin (a cylindrical acrylic container with a diameter of 25 cm and a height of 15 cm), the injection temperature is 20 ° C, 179 mg / L in terms of calcium carbonate, and alkalinity 65 CaCO ₃ mg / l (this hard water is equivalent to 10 °DH in German hardness), hard water of pH 7.15 (prepared in the same manner as the user in the above foaming evaluation) 5 L, and squeezed into the above foaming evaluation 3 pieces of underwear for evaluation. After rubbing the underwear in the rinse water, lift the part of the neckline of each piece of the underwear back up from the bath (lifted from the bath until it is about 5 cm above the washbasin and until the whole fabric is completely detached), Then return to the bath again. After rinsing each of the upper and lower movements for 10 times, the water content of the underwear was squeezed over 10 cm from the washbasin so that the moisture content of the underwear was about 100 to 140%. The liquid level of the rinse water immediately after the rinsing and dehydration of the three pieces of underwear was observed, and the points were attached according to the following criteria. It is 1 evaluation. Further, the dehydrated underwear was put into fresh rinse water, and then the evaluation was repeated twice (including three pieces of underwear used for one type of liquid detergent composition including the above-mentioned evaluation of foaming property). The sum is evaluated for rinsing properties.

point

6: Foam with a foam height of 1 cm or more remains in the liquid level as a whole

5: The foam remains on the whole surface (less than 1 cm)

4: The foam remains in about 1/2 of the liquid surface.

3: The foam remains in about 1/4 of the liquid surface.

2: Subtle foam remains in the liquid surface

1: The foam does not remain in the liquid surface

(3) Evaluation of detergency <Production of artificial pollution cloth>

The artificially-contaminated cloth used was printed on a 6 cm × 6 cm cotton/polyester blended wide-dyed fabric (cotton/polyester ratio = 65/35, purchased from the Gutou store) with a gravure printing method of 100 mg per piece. The cloth contains artificial dirt of the following composition.

* Artificial dirt

The composition containing the following A, B, C, D, and E was made into artificial soil. The respective mass% is the ratio of the artificial dirt of the final composition, and the amount of B is adjusted so as to become 100% by mass in total. A: The adjustment oil used in the above evaluation of the foaming property (the mass% in the artificial soil is 0.44% by mass of lauric acid, 3.15% by mass of myristic acid, 2.35 mass% of pentadecanoic acid, 9.31% by mass of palmitic acid, and heptadecanoic acid). 0.44% by mass, stearic acid 1.6% by mass, oleic acid 1.91% by mass, trimyristate 13.33% by mass, palmitic acid n-hexadecyl ester 5.22% by mass, and squalene 6.66% by mass)

B: Weigh calcium chloride (dihydrate) 105 mg, dissolved in distilled water and made it into 1,000 ml to obtain hard water.

C: protein lecithin liquid crystal 1.98 mass% (dissolved 11.37 g of arginine hydrochloride, 4.20 g of histidine, 2.44 g of serine in 80 ml of distilled water, adjusted to pH 5.0 with concentrated hydrochloric acid, and utilized a protein lecithin liquid crystal obtained by thoroughly mixing the solution with protein lecithin

D: 8.11% by mass of Luhan terracotta

E: carbon black 0.025% by mass

<washing conditions>

3 g of the liquid detergent composition was dissolved in hard water in terms of calcium carbonate equivalent to 179 mg/L, alkalinity 65 CaCO ₃ mg/l, and pH 7.15 (in the same manner as the user in the above foaming evaluation) In the preparation of 1 L, four pieces of the above-mentioned artificially contaminated cloth were placed therein, and washed with a washing tester (Terg-O-Tometer) under the following conditions.

Washing time 10 minutes

Water temperature 20 ° C

The washing power was measured by a colorimetric color difference meter (manufactured by Nippon Denshoku Co., Ltd., Z-300A) for the original cloth before contamination and the reflectance at 550 nm before and after washing, and the washing rate was determined according to the following formula (%). (The value in the table is the average of the wash rates of 4 tablets).

Washing rate (%) = 100 × [(reflectance after washing - reflectance before washing) / (reflectivity of original cloth - reflectance before washing)]

In the table, the "200-fold water dilution" of the pH value is used to dilute the pH of the water dilution of the liquid detergent composition by 200 times using water having a pH of 7.15 and a basicity of 65 CaCO ₃ mg/l. Further, the "pH after hydrochloric acid addition" is a pH value obtained by adding 0.5 g of a predetermined hydrochloric acid to 1 L of the above water-diluted product.

(4) Evaluation of low temperature stability <Evaluation method>

The liquid detergent composition shown in Table 3 was transferred to a 50 ml-size vial (PS-No. 6 wide-mouth specification bottle, manufactured by Ishida Container Co., Ltd.) and sealed at 0 ° C or 5 ° C. The above liquid detergent composition was allowed to stand in a constant temperature chamber in which the error range was set to ±1 °C. Then, the state on the third day after standing was visually evaluated. The basis of the evaluation is as follows. The results are shown in Table 3.

○: No precipitate was observed in the sample liquid after the storage time was completed under the storage conditions of 5 ° C.

◎: No precipitate was observed in the sample liquid after the storage time was completed under the storage condition of 0 °C.

Claims (12)

A liquid detergent composition comprising (a) an anionic surfactant selected from the group consisting of polyoxyalkylene alkyl alkyl ether sulfate salts and alkylbenzene sulfonates 5~ 40% by mass, (b) a fatty acid and/or a salt thereof, (c) an alkanolamine, (d) a carbonate, (e) a nonionic surfactant, and a water, and a polyoxyalkylene alkyl ether The mass ratio of the sulfate salt to the alkylbenzenesulfonate is 70/30 to 100/0, and the mass ratio of the polyoxyalkylene alkyl sulfate ether sulfate/(b) is 3/1 to 20/1. The mass ratio of the alkylene alkyl ether sulfate salt (e) is from 60/40 to 100/0, and the pH of the liquid detergent composition described in JIS K3362:2008 8.3 at 25 ° C It is 9~11. The liquid detergent composition of claim 1, wherein (a) is an alkyl group having 10 to 20 carbon atoms, and the average addition molar ratio of the alkoxy group is 0 to 5; Alkyl ether sulfate salt. A liquid detergent composition according to claim 1 or 2, wherein (b) is a fatty acid having 10 to 18 carbon atoms. The liquid detergent composition according to claim 1 or 2, wherein (b) comprises a fatty acid having 12 to 14 carbon atoms and/or a salt thereof, and a fatty acid having 16 to 18 carbon atoms and/or a salt thereof. The liquid detergent composition according to claim 1 or 2, wherein the content of (b) is from 0.4 to 5% by mass. A liquid detergent composition according to claim 1 or 2, wherein (c) is 25 ° C An alkanolamine having a pKa in the range of 8.5 to 10.6. A liquid detergent composition according to claim 1 or 2, wherein (c) is a monoalkanolamine. The liquid detergent composition according to claim 1 or 2, wherein (d) is a compound selected from the group consisting of one or more of the group consisting of alkali metal hydrogencarbonate, alkali metal carbonate and alkali metal sesquicarbonate. The liquid detergent composition according to claim 1 or 2, wherein (e) is a polyoxyalkylene alkyl group obtained by adding an average of 1 to 12 moles of ethylene oxide to an alcohol having 10 to 18 carbon atoms. ether. The liquid detergent composition of claim 1 or 2 which is excellent in both foaming property and rinsing property in the washing of the clothing. A hand-washing method for hand-washing a washed product containing the washing water containing the liquid detergent composition according to any one of claims 1 to 10, and the quality of the washing water is relative to the washed The quality of the net goods is 2 to 100 times. A liquid detergent composition comprising (a) an anionic surfactant selected from the group consisting of polyoxyalkylene alkyl alkyl ether sulfate salts and alkylbenzene sulfonates 5~ 40% by mass, (b) a fatty acid and/or a salt thereof, (c) an alkanolamine, (d) a carbonate, (e) a nonionic surfactant, and a water, and a polyoxyalkylene alkyl ether The mass ratio of the sulfate salt to the alkylbenzenesulfonate is 70/30 to 100/0, and the mass ratio of the polyoxyalkylene alkyl sulfate ether sulfate/(b) is 3/1 to 20/1. The mass ratio of the alkylene alkyl ether sulfate salt (e) is 60/40~100/0, the liquid detergent composition of JIS K3362:2008 8.3 has a pH value of 9-11 as measured at 25 ° C, and two of foaming and rinsing properties in the washing of the clothing. Both are excellent.