JP5545911B2 - Liquid detergent composition - Google Patents

Description

  The present invention relates to a liquid detergent composition, and more particularly to a liquid detergent composition suitable for hand-washing laundry.

  There are two types of washing methods for clothing and the like: hand washing and washing machine washing. In recent years, there is a tendency for washing machines to increase due to the spread of washing machines. However, from the viewpoint of being able to confirm the degree of dirt removal and economical efficiency, hand washing is still widely performed worldwide. Yes. In particular, hand-washing laundry is often adopted so that it can be washed with as little water as possible in an area where water resources are low.

  Compared to washing with a washing machine, hand-washing allows fine washing according to the situation, such as the degree of dirt removal and the type of object to be washed. Accompanied by. In particular, “rubbing” in which objects to be cleaned are rubbed together is one of the most natural hand washing methods because it is easy to apply mechanical force to the parts to be cleaned.

  The amount of foam generated at the time of washing clothes and the like is a factor that causes a sense of fulfillment and a sense of security that washing is sufficient for consumers who do laundry. Many detergents mainly composed of anionic surfactants such as alkylbenzene sulfonate are manufactured and sold.

  On the other hand, as cleaning compositions for washing, granular (solid) and liquid compositions are mainly known. The liquid detergent composition has advantages such as no generation of fine powder during use and quick dissolution and dispersion in washing water.

  Patent Document 1 discloses a surfactant system including a specific anionic surfactant and a specific nonionic surfactant mixture, a detergency builder, and an auxiliary detergent component for use in a hand washing operation. A laundry detergent composition which can be in the form of a liquid is disclosed. Patent Document 2 discloses a hand-washing laundry detergent composition that can take the form of a liquid containing an anionic surfactant, a nonionic surfactant, and a cationic surfactant under specific conditions. Patent Document 3 discloses an aqueous liquid detergent composition containing a specific surfactant, a higher fatty acid salt, a sulfonate of benzene or lower alkylbenzene, an inorganic builder, and an alkali salt of a polyvalent carboxylic acid. . Patent Document 4 discloses a polyoxyalkylene alkyl ether type nonionic surfactant having a relatively large average number of added moles of alkyleneoxy groups, a specific anionic surfactant, and a fatty acid having 8 to 18 carbon atoms or a fatty acid thereof. It is disclosed that a detergent composition containing salt under specific conditions is a detergent composition having excellent detergency during washing and foaming properties, and bubbles disappear quickly in the rinsing step, and rinsing is completed quickly. ing.

Japanese National Patent Publication No. 10-504049 Japanese National Patent Publication No. 10-504056 JP-A-52-82909 JP 2011-89107 A

  In addition to having an excellent detergency, a washing detergent composition for washing is desired to have excellent foaming properties that exhibit appropriate foaming during cleaning and excellent rinsing properties such as rapid disappearance of bubbles during rinsing. In particular, it is more desirable to obtain excellent detergency, foaming properties and rinsing properties even when using high-hardness washing water. Patent Documents 1 and 2 are said to have good foaming properties and low irritation properties, but have not yet sufficiently achieved rapid foam disappearance at the time of rinsing. Although patent document 3 is supposed to be excellent in washing | cleaning property and stability, it cannot achieve coexistence of moderate foaming and quick foam disappearance in hand-washing washing. In addition, Patent Document 4 does not suggest a composition that can improve the foamability and rinsability while improving the degree of freedom of blending by reducing the blending amount of fatty acids or salts thereof.

  An object of the present invention is to provide a liquid detergent composition for washing that has more excellent detergency in washing clothes and the like and is more excellent in both foaming and rinsing properties.

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

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

  The present invention is also a hand-washing washing method for hand-washing an object to be cleaned that has been brought into contact with the cleaning water containing the liquid detergent composition of the present invention, wherein the mass of the cleaning water relative to the mass of the object to be cleaned is 2-100. It is related to the hand-washing washing method.

  ADVANTAGE OF THE INVENTION According to this invention, in washing | cleaning of clothes etc., it has the outstanding detergency, and the liquid detergent composition excellent in both foaming property and a rinse property is provided. Such effects of the present invention can be obtained even when washing and rinsing with high-hardness washing water. Further, the liquid detergent composition of the present invention has good composition stability such as low-temperature storage stability.

[First Embodiment]
<(A) component>
The component (a) is one or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates.

  The polyoxyalkylene alkyl ether sulfate ester salt is not limited, but for example, an alkyl group having 10 or more, 12 or more, 20 or less, and 14 or less carbon atoms, preferably a linear primary alcohol or It has an alkyl group derived from a linear secondary alcohol or an alkyl group derived from a branched alcohol, and the average added mole number of an alkyleneoxy group is 0 or more, more than 0, further 0.5 or more, further 1 or more, or 5 Hereinafter, further 4 or less, and further 3 or less are mentioned. Specifically, for example, it has an alkyl group having 10 to 20 carbon atoms, preferably 12 to 14, preferably an alkyl group derived from a linear primary alcohol or a linear secondary alcohol or an alkyl group derived from a branched alcohol, An alkyleneoxy group having an average added mole number of 0 to 5, preferably 0.5 to 4, and more preferably 1 to 3 is mentioned. An ethyleneoxy group is preferably included as the alkyleneoxy group, and a propyleneoxy group may be included in the range of an average addition mole number of 0.2 to 2 mol. The salt is preferably an alkali metal salt, more preferably a salt selected from a sodium salt and a potassium salt, and still more preferably a sodium salt.

  Examples of the alkylbenzene sulfonate include, but are not limited to, for example, alkylbenzene sulfonates having 8 or more carbon atoms, 10 or more carbon atoms, 20 or less carbon atoms, and further 15 or less carbon atoms, preferably having a linear alkyl group. Can be mentioned. That is, examples of the alkylbenzene sulfonate include alkylbenzene sulfonate having 8 to 20 carbon atoms, preferably 10 to 15 carbon atoms, and preferably having a linear alkyl group.

  Examples of the alkylbenzene sulfonate include alkali metal salts such as sodium and potassium, alkanolamine salts, and alkaline earth metal salts such as magnesium and calcium. From the viewpoint of detergency and storage stability of the composition. An alkali metal salt or an alkanolamine salt is preferable. When preparing the composition of the present invention, an alkylbenzene sulfonic acid which is an acid type compound is added to the raw material to be the composition, and may be neutralized with an alkali in the system to obtain an alkylbenzene sulfonate. You may add in the raw material used as a composition, after summing. For neutralization of the alkylbenzene sulfonic acid, a strong base such as sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium hydroxide or the component (c) described later can be used.

<(B) component>
The fatty acid and / or salt thereof as the component (b) is not limited, but for example, 7 or more carbon atoms, 9 or more carbon atoms, 10 or more carbon atoms, 43 or less carbon atoms, 23 or less carbon atoms, 18 or less carbon atoms. And those having a linear or branched alkyl group, more preferably a linear or methyl branched chain fatty acid having 12 to 14 carbon atoms and a salt thereof. Specifically, the fatty acid and / or salt thereof as component (b) has a linear or branched alkyl group having 7 to 43 carbon atoms, preferably 9 to 23 carbon atoms, more preferably 10 to 18 carbon atoms. Examples thereof include fatty acids having 12 to 14 carbon atoms and / or salts thereof having a straight chain or a methyl branched chain. The component (b) may have an unsaturated bond, but the number thereof is 2 or less, preferably 1 or less, 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 lauric acid and fatty acid derived from coconut rich in myristic acid, and / or a salt thereof. From the viewpoint of detergency, foamability, and rinsing properties, it preferably contains at least one compound selected from lauric acid and salts thereof, and myristic acid and salts thereof, and further selected from myristic acid and salts thereof It is more preferable that the above compound is included. The component (b) can 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 such as sodium or potassium or an alkanolamine salt from the viewpoint of rinsing properties. When preparing the composition of the present invention, the fatty acid which is an acid type compound may be added to the composition and neutralized with an alkali in the system, or after neutralization in advance and added to the composition May be. For neutralization of the fatty acid, a strong base such as sodium hydroxide, potassium hydroxide, lithium hydroxide, ammonium hydroxide or the component (c) described later can be used.

<(C) component>
The component (c) includes alkanolamines, particularly alkanolamines having 1 to 3 alkanol groups having 2 to 4 carbon atoms. Of these, the alkanol group is preferably a hydroxyethyl group. Other than the alkanol group is a hydrogen atom, but an alkyl group having 1 to 5 carbon atoms and a methyl group can also be used as the component (c). The component (c) has a pKa at 25 ° C. of 8.5 or more, further 8.7 or more, further 9 or more, 10.6 or less, further 10 or less, and further 9.6 or less from the viewpoint of detergency and rinsing properties. Specifically, pKa is preferably 8.5 to 10.6, more preferably 8.7 to 10, and still more preferably 9 to 9.6. Examples of the alkanolamine include monoethanolamine (pKa = 9.52), N-methylethanolamine, N, N-dimethylethanolamine, N, N-diethylethanolamine, monoalkanolamine such as monoisopropanolamine, diethanolamine (pKa). = 8.90), dialkanolamines such as N-methyldiethanolamine and N-butyldiethanolamine, and alkanolamines such as a mixture thereof (mixture of monoalkanolamine and dialkanolamine). In the present invention, one or more alkanolamines selected from monoalkanolamines and dialkanolamines are preferable, one or more alkanolamines selected from monoethanolamine and diethanolamine are more preferable, and monoethanolamine is more preferable from the viewpoint of detergency.

<(D) component>
(D) A component is carbonate. Specific examples include one or more compounds selected from the group consisting of alkali metal hydrogen carbonate, alkali metal carbonate, and alkali metal sesquicarbonate. Component (d) is preferably an alkali metal salt such as a sodium salt from the viewpoint of the stability of the polyoxyalkylene alkyl ether sulfate ester salt of component (a), and sodium bicarbonate from the viewpoint of further suppressing the salt strength of the system. Salts are preferred.

  In the liquid detergent composition of the present invention, by using the component (c) in combination with the component (d), the cleaning properties and storage stability can be improved.

  Component (c) and component (d) may also be used for neutralization of component (a) and component (b) described above. From the viewpoint of detergency and mildness to the hand skin, the pH buffering ability of the liquid detergent composition of the present invention is in the range of pH 9 to 11, preferably 9 to 10.5, more preferably 9.5 to 10. For this purpose, it is desirable to combine compounds having a pKa at 25 ° C. in the range of 8.5 to 10.6, among the components (c) and (d).

<(E) component>
The nonionic surfactant is not particularly limited. For example, an average of 1 mol or more, 2 mol or more, 12 mol or less, and 4 mol of ethylene oxide in an alcohol having 10 to 18 carbon atoms. Examples of the added polyoxyalkylene alkyl ether include the following. That is, examples of the nonionic surfactant include polyoxyalkylene alkyl ethers obtained by adding 1 to 12 moles, for example, 2 to 4 moles, of ethylene oxide on average to an alcohol having 10 to 18 carbon atoms.

  When the component (e) is contained, the content of the polyoxyalkylene alkyl ether in which ethylene oxide is added to an alcohol having 10 to 18 carbon atoms on average in an amount of 1 to 12 moles is 0.00. It is preferably 3% by mass or more, more preferably 0.5% by mass or more, and further preferably 1% by mass or more, and 5% by mass or less, further 3% by mass or less, further 2.5% by mass or less, and further preferably 2% by mass or less.

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

<Liquid cleaning composition>
In the liquid detergent composition of the present invention, the mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate is 70/30 or more and 100/0 or less, further 75/25 or more, and further 80/20 or more. Further, it is preferably 90/10 or more, more preferably 95/5 or more.

  In the liquid detergent composition of the present invention, the mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate is 70/30 to 100/0, preferably 75/25 to 100/0, more preferably 80/20 to 100/0, further 90/10 to 100/0, further 95/5 to 100/0, and further 100/0, that is, the component (a) is composed only of polyoxyalkylene alkyl ether sulfate salt. Therefore, the alkylbenzene sulfonate may not be contained. Within this mass ratio range, excellent cleaning properties and rinsing properties can be obtained.

  In addition, in the liquid detergent composition of the present invention, the mass ratio of polyoxyalkylene alkyl ether sulfate / (b) component is 3 from the viewpoint of maintaining appropriate foaming properties, washing properties and low-temperature stability during washing. / 1, or more, preferably 4/1 or more, more preferably 5/1 or more, more preferably 6/1 or more, more preferably 7/1 or more. Further, in the liquid detergent composition of the present invention, from the viewpoint of quick foam extinction at the time of rinsing, the mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (b) component is 20/1 or less, preferably It is 16/1 or less, more preferably 13/1 or less, more preferably 11/1 or less, and more preferably 9/1 or less.

  In the liquid detergent composition of the present invention, polyoxyalkylene alkyl ether sulfate / (b) from the viewpoint of simultaneously satisfying three of appropriate foaming property at the time of washing, rapid foam disappearance at the time of rinsing and detergency. The mass ratio of the components is 3/1 to 20/1, preferably 4/1 to 16/1, more preferably 5/1 to 13/1, more preferably 6/1 to 11/1, more preferably. 7/1 to 9/1.

  Here, the mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate is 70/30 or more and 100/0 or less, and the mass ratio of polyoxyalkylene alkyl ether sulfate / (b) component When the ratio is 3/1 or more, rapid foam disappearance at the time of rinsing can be achieved. The reason for this is not always clear, but the present inventors believe that it is based on the following events. That is, the influence of the particles on the foaming property is great. Of these, hydrophobic particles of submicron to several microns have a significant effect on foam suppression. In the liquid detergent composition of the present invention, the metal salt of the fatty acid precipitated by the combination of the fatty acid which is the component (b) in the composition and the hardness component such as calcium contained in tap water at the time of washing is rinsed. It is thought that this affects the rapid foam disappearance. In an anionic surfactant system in which the proportion of alkylbenzene sulfonate is increased, the particle size of the precipitated fatty acid metal salt is about several tens to several hundreds of nanometers, while the proportion of alkylbenzene sulfonate is small. In such an anionic surfactant system, it has been found that depending on conditions, it tends to be coarsened into a precipitate of about several microns. Although there are various factors such as oil brought in from clothes during hand washing, it is speculated that the same phenomenon is occurring. As a result, it is considered that even with a small amount of fatty acid having a mass ratio of 3/1 or more, rapid foam disappearance at the time of rinsing could be achieved.

  The liquid detergent composition of the present invention contains the component (a) calculated in terms of sodium salt in an amount of 5% by mass or more, further 6% by mass or more, further 7% by mass or more, and further 8% by mass. More preferably, the content is further 9% by mass or more, more preferably 10.5% by mass or more, and 40% by mass or less, further 30% by mass or less, further 20% by mass or less, and further 16% by mass. Hereinafter, it is more preferable to contain 14 mass% or less.

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

  The liquid detergent composition of the present invention contains the component (b) calculated in terms of sodium salt in an amount of 0.1% by mass or more, further 0.2% by mass or more, and further 0.4% by mass or more. Further, 0.5% by mass or more, further 0.6% by mass or more, further 0.7% by mass or more, still more preferably 0.8% by mass or more, and further preferably 1% by mass or more, From the viewpoint of foaming properties, 10% by mass or less, 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. Is preferred.

  The liquid detergent composition of the present invention is obtained by calculating the amount of the component (b) in terms of sodium salt, 0.1 to 10% by mass, further 0.2 to 10% by mass, and further 0.4 to 5% by mass. %, Further 0.5 to 4% by mass, further 0.6 to 3% by mass, still more 0.7 to 2% by mass, and still more preferably 0.8 to 1.5% by mass.

  The liquid detergent composition of the present invention preferably contains 0.1% by mass or more of component (c), more preferably 0.2% by mass or more, and 1% by mass or more from the viewpoint of cleaning performance and rinsing properties. The content is preferably 10% by mass or less, more preferably 6% by mass or less, further 4% by mass or less from the viewpoint of the masking effect of the amine odor, and 3% by mass or less from the viewpoint of the masking effect.

  In the liquid detergent composition of the present invention, the component (c) is 0.1 to 10% by mass, more preferably 0.2 to 6% by mass, and more preferably 0.2 to 4% by mass from the viewpoint of the masking effect of amine odor. Furthermore, it is preferable to contain 1-3 mass% from a viewpoint of cleaning performance and a masking effect.

  The liquid detergent composition of the present invention is obtained by calculating the amount of component (d) in terms of sodium salt, 0.5% by mass or more, further 1% by mass or more, further 1.5% by mass or more, and further 1 0.7% by mass or more, further 2% by mass or more, further 2.5% by mass or more, further preferably 3% by mass or more, preferably 10% by mass or less, further 8% by mass or less, and further 6%. It is preferably contained in an amount of not more than mass%, more preferably not more than 5 mass%, still more preferably not more than 4 mass%.

  The liquid detergent composition of the present invention is obtained by calculating the amount of the component (d) in terms of sodium salt, 0.5 to 10% by mass, further 1 to 8% by mass, further 1.5 to 6% by mass, Further, it is preferable to contain 1.7 to 5% by mass, and further 2 to 4% by mass.

  The content of each component is selected within a range that satisfies the mass ratio.

  The liquid detergent composition of the present invention is a total of 6% by mass or more, and further 8% by mass or more of the component (a) and the component (b) from the viewpoint of moderate foaming properties and quick foam disappearance at the time of rinsing. Further, it is preferably contained at 10% by mass or more, more preferably 12% by mass or more, and preferably 30% by mass or less, 25% by mass or less, further 20% by mass or less, and further preferably 16% by mass or less. . If this content is 6% by mass or more, a composition having better detergency and foaming properties can be obtained, while if it is 30% by mass or less, it has a better viscosity and dissolves quickly in the washing liquid. A composition that can be dispersed or has a clearer liquid feeling is obtained.

  The liquid detergent composition of the present invention is a total of 6 to 30% by mass of the component (a) and the component (b), and further 8 to 25%, from the viewpoint of moderate foaming properties and quick foam disappearance at the time of rinsing. It is preferable to contain 10% by mass, further 10-20% by mass, and further 12-12% by mass. If this content is 6% by mass or more, a composition having better detergency and foaming properties can be obtained, while if it is 30% by mass or less, it has a better viscosity and dissolves quickly in the washing liquid. A composition that can be dispersed or has a clearer liquid feeling is obtained.

  In the liquid detergent composition of the present invention, from the viewpoint of rapid foam extinction at the time of rinsing, ethylene oxide is averaged in the nonionic surfactant as the component (e), particularly alcohol having 10 to 18 carbon atoms. The content of the polyoxyalkylene alkyl ether added in an amount of 1 mol or more and 12 mol or less is limited, and the ratio of the component (e) to the total amount of the polyoxyalkylene alkyl ether sulfate ester salt and 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, further 10% by mass or less, and further 5% by mass or less, and the component (e) It does not need to contain. In addition, the liquid detergent composition of the present invention has a mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) component of 60/40 to 100/0 from the viewpoint of rapid foam extinction at the time of rinsing. 65/35 to 100/0 is preferable, 70/30 to 100/0 is preferable, 80/20 to 100/0 is preferable, 85/15 to 100/0 is preferable, and 90/10 to 100/0 is preferable 95/5 to 100/0 is more preferable. Further, the content of the component (e) in the composition is preferably 3% by mass or less, 2.5% by mass or less, further 2% by mass or less, further 1.5% by mass or less, and further 1% by mass. % Or less, further 0.5% by mass or less, and further 0% by mass, that is, not blended at all, that is, the liquid detergent composition of the present invention may not contain the component (e).

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

  In the liquid cleaning composition of the present invention, the content of water is 100% by mass in the whole composition, and is 30 to 90% by mass, further 40 to 85% by mass, and more preferably 50% in the composition. -80 mass% is preferable.

  Moreover, the liquid detergent composition of this invention contains surfactant other than (a) component, (b) component, and said (e) component as (f) component in the range which does not impair the effect of this invention. be able to. In the present invention, the proportion of component (f) is preferably 20% by mass or less, more preferably 10% by mass or less, and even more preferably 5% by mass or less in the total surfactant.

  The component (f) is not limited, and examples thereof include amine oxides and betaines. Since these have a function as a foam booster, for example, as described in “Foam Engineering” (published by Techno System Co., Ltd., 2005), the foaming power of the cleaning composition of the present invention is increased. be able to. Among the components (f), a foam booster selected from amine oxide and betaine, especially a foam booster selected from amine oxide, is 5% by mass or less, more preferably 3% by mass or less in the composition in order not to impair the rinsing properties. Further, it is preferably 1.5% by mass or less, more preferably 0.5% by mass or less.

  Examples of the amine oxide include a monovalent alkyl group having a long chain length of 8 or more carbon atoms, 12 or more carbon atoms, 18 or less carbon atoms, and 14 or less carbon atoms, and an alkyl group having 1 to 3 carbon atoms, preferably a methyl group. Long chain alkylamine oxides can be mentioned. Therefore, as the amine oxide, a mono long chain alkylamine oxide having a long chain length alkyl group having 8 to 18 carbon atoms, preferably 12 to 14 carbon atoms and an alkyl group having 1 to 3 carbon atoms, preferably a methyl group, etc. Can be mentioned. Examples of betaines include alkylamidopropyl betaines. Among them, lauramidopropyl betaine having 12 carbon atoms and cocoamidopropyl betaine having a coconut oil composition are generally used. Among these, the content in the composition of the foam booster selected from the betaines is preferably 1.5% by mass or less, more preferably 1% by mass or less, further 0.5% by mass or less, and further preferably 0.3% by mass or less.

  In the liquid detergent composition of the present invention, in the total surfactant, the proportion of the component (a) is 50% by mass or more, further 60% by mass or more, further 70% by mass or more, and further 80% by mass or more. It is preferable that it is 95% by mass or less, further 93% by mass or less, and further 90% by mass or less from the viewpoint of foaming / cleaning performance. Further, in the liquid detergent composition of the present invention, the ratio of the polyoxyalkylene alkyl ether sulfate ester salt in the total surfactant is 40% by mass or more, further 50% by mass or more, and further 70% by mass or more. From the viewpoint of cleaning performance, it is preferable that the content is not more than mass%, more preferably not more than 93 mass%, still more preferably not more than 90 mass%.

  Moreover, in the liquid detergent composition of the present invention, the ratio of the component (a) is 50 to 95% by mass, further 60 to 93% by mass, and further 70 to 90% by mass in the total surfactant. It is preferable from the viewpoint of foaming and cleaning performance. Further, in the liquid detergent composition of the present invention, the ratio of the polyoxyalkylene alkyl ether sulfate salt is 40 to 95% by mass, further 50 to 93% by mass, and further 70 to 90% by mass in the total surfactant. It is preferable from the viewpoint of cleaning performance.

  The liquid detergent composition of the present invention has a pH measured at 25 ° C. of 9 or more, preferably from the viewpoint of detergency, particularly application detergency and mildness to hand skin, preferably 8.3 It is 9.3 or more, 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, and even 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, and even more preferably 9.5 to 10. The pH is adjusted according to the type and amount of the component to be blended in the composition, and in particular, the acid type compound of the alkylbenzene sulfonate, the component (b), the component (c) and the component (d). If necessary, it may be adjusted using an acid agent such as hydrochloric acid (for example, 6N-HCl), citric acid, paratoluenesulfonic acid (PTS), paracumenesulfonic acid (PCS), or the like.

The liquid detergent composition of the present invention has a liquid detergent composition of 200 with water of alkalinity = 65CaCO ₃ mg / l, pH 7.15 from the viewpoint of quick defoaming and washing performance, and gentleness to the hand skin.
The pH measured at 25 ° C. described in JIS K3362: 2008 8.3 is preferably 8.5 or more, more preferably 8.7 or more, still more preferably 8.9 or more, and even more preferably. Is 9 or more, preferably 10.5 or less, more preferably 10.1 or less, still more preferably 9.7 or less, and even 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, and even more preferably 9 to 9.5. The components (c) and (d) of the present invention are alkaline agents having a pKa suitable for imparting such properties, and these properties are imparted to the composition by combining them. can do.

The measurement method of the alkalinity of the water used for preparation of the said water dilution is shown below (Hereinafter, unless otherwise specified, the alkalinity of this invention says what was measured by this method).
Take 100 ml of test water in a 200 ml beaker and add 0.15 ml of bromocresol green-methyl red / ethanol solution (manufactured by Wako Pure Chemical Industries, Ltd.) as an indicator. When there is residual chlorine 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 the residual chlorine. The solution is titrated with 10 mmol / l sulfuric acid with gentle stirring until the color of the solution changes from blue to reddish purple. The alkalinity is calculated by the following formula.
Alkalinity (CaCO ₃ mg / l) = a × 10
Here, a: 10 mmol / l sulfuric acid (ml) required for titration
When the color change due to the indicator is not clear, such as a colored sample, a pH meter is used instead of the indicator, and the amount of 10 mmol / l sulfuric acid (ml) required until the pH value is 4.8 is defined as a.

In addition, the liquid detergent composition of the present invention has a water dilution obtained by diluting the liquid detergent composition 200-fold with water having an alkalinity = 65CaCO ₃ mg / l, pH 7.15 from the viewpoint of quick defoaming. When 0.5 g of normal hydrochloric acid is added per liter of the water dilution, the pH measured at 25 ° C. described in JIS K3362: 2008 8.3 is 8.5 or higher, further 8.8 or higher, and further 9 or higher. Further, it is preferably 9.2 or more, and on the other hand, 11 or less, further 10 or less, and more preferably 9.5 or less. That is, the pH is preferably 8.8 to 11, more preferably 9 to 10, and still more preferably 9.2 to 9.5. The components (c) and (d) of the present invention are alkaline agents having a pKa suitable for imparting such properties, and these properties are imparted to the composition by combining them. can do. The reason for using hydrochloric acid is that it assumes acidic stains such as sweat and sebum.

  The liquid detergent composition of the present invention specifies the mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate and polyoxyalkylene alkyl ether sulfate / (b) in component (a). By combining with the components (c) and (d), it has excellent detergency in washing clothes and the like, and exhibits excellent performance in both foaming and rinsing properties.

  Examples of other components that can be incorporated into the liquid detergent composition of the present invention include nitrilotriacetic acid, iminodiacetic acid, ethylenediaminetetraacetic acid, diethylenetriaminepentaacetic acid, glycol etherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, and triethylenetetraamine. Aminopolyacetic acid such as hexaacetic acid and diencoric acid or salts thereof, diglycolic acid, oxydisuccinic acid, carboxymethyloxysuccinic acid, citric acid, lactic acid, tartaric acid, oxalic acid, malic acid, oxydisuccinic acid, gluconic acid, carboxymethylsuccinic acid Chelating agents such as organic acids such as carboxymethyl tartaric acid or salts thereof, preferably chelating agents having a molecular weight of 1,000 or less can be blended. The content of the chelating agent in the composition is 0.001% by mass or more, further 0.01% by mass or more, further 0.03% by mass or more, or 10% by mass or less, and further 3% by mass or less. Furthermore, it is preferable that it is 1 mass% or less. Therefore, it is preferable that content of a chelating agent is 0.001-10 mass%, 0.01-3 mass%, and 0.03-1 mass% in a composition.

  In addition, for the purpose of improving the solution stability and transparency of the cleaning composition, a water-miscible organic solvent [hereinafter referred to as component (g)] may be contained. The water-miscible organic solvent referred to in the present invention refers to a solvent that dissolves 50 g or more in 1 L of ion-exchanged water at 25 ° C., that is, a solvent having a degree of dissolution of 50 g / L or more. The content of the component (g) is 0.1% by mass or more, further 0.3% by mass or more, further 0.5% by mass or more, and further 1% from the viewpoint of improving the solution stability and transparency. It is not less than 2% by mass or more, 1.5% by mass or more, or not more than 40% by mass, further not more than 20% by mass, further not more than 10% by mass, and further not more than 5% by mass. Is preferred. Therefore, the content of the component (g) is 0.1 to 40% by mass, further 0.3 to 40% by mass, and further 0.5 to 40% in the composition from the viewpoint of improving the solution stability and transparency. The mass%, further 1-20 mass%, 1.5-10 mass%, and 2-5 mass% are still more preferable.

  As the component (g), (g1) alkanols such as ethanol, 1-propanol, 2-propanol and 1-butanol, (g2) glycols such as propylene glycol, butylene glycol and hexylene glycol, (g3) diethylene glycol, Glycols such as triethylene glycol, tetraethylene glycol, dipropylene glycol, tripropylene glycol, (g4) diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether , Dipropylene glycol monoethyl ether, tripropylene glycol Methyl ether, 1-methoxy-2-propanol, 1-ethoxy-2-propanol, 1-methylglycerol ether, 2-methylglycerol ether, 1,3-dimethylglycerol ether, 1-ethylglycerol ether, 1,3-diethyl Alkyl ethers such as glycerin ether, triethyl glyceryl ether, 1-pentyl glyceryl ether, 2-pentyl glyceryl ether, 1-octyl glyceryl ether, 2-ethylhexyl glyceryl ether, diethylene glycol monobutyl ether (also called butoxy diglycol), (g5) 2-phenoxyethanol, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, polyethylene glycol having an average molecular weight of about 480 Mono phenyl ether, 2-benzyloxy ethanol, aromatic ethers such as diethylene glycol monobenzyl ether, and the like.

  The water-miscible organic solvent is effective as a viscosity modifier and a gelation inhibitor for the composition. The above (g1) alkanols, (g2) glycols, (g4) alkyl ethers, (g5) aromatics It is preferable to use one or more selected from ethers, more preferably selected from (g2) glycols, (g4) alkyl ethers, and (g5) aromatic ethers, and more preferably (g4). Alkyl ethers. Furthermore, diethylene glycol monobutyl ether is preferred. The component (g) is effective for adjusting viscosity and suppressing gelation.

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

(I) Polyacrylic acid, polymaleic acid, carboxymethyl cellulose, polyethylene glycol having a weight average molecular weight of 5,000 or more, maleic anhydride-diisobutylene copolymer, maleic anhydride-methyl vinyl ether copolymer, maleic anhydride-vinyl acetate Prevention of recontamination of copolymers, naphthalenesulfonate formalin condensates, and polymers described in claims 1 to 21 (page 1, column 3, line 5 to page 3, column 4, line 14) of JP-A-59-62614 Agents and dispersants, preferably polyacrylic acid, polymaleic acid or salts thereof, more preferably polyacrylic acid or salts thereof 0.1 to 10% by weight, preferably 0.5 to 5% by weight, more preferably 1 to 3% by mass
(Ii) Color transfer inhibitor such as polyvinylpyrrolidone (iii) Bleaching agent such as hydrogen peroxide, sodium percarbonate and sodium perborate (iv) Tetraacetylethylenediamine, general formula (I-2) of JP-A-6-316700 Bleach activators such as bleach activators represented by (I-7) (v) Enzymes such as cellulase, amylase, pectinase, protease, lipase (vi) Boron compounds, calcium ion sources (calcium ion supply compounds) Enzyme stabilizers (vii) fluorescent dyes such as bihydroxy compounds and formic acid, for example, fluorescent dyes commercially available as Chino Pearl CBS (trade name, manufactured by Ciba Specialty Chemicals) and Whitetex SA (trade name, manufactured by Sumitomo Chemical Co., Ltd.) (Viii) Butylhydroxytoluene, distyrenated cresol, sodium sulfite, sodium bisulfite, etc. Antioxidants (ix) solubilizers such as paratoluenesulfonic acid, cumenesulfonic acid, metaxylenesulfonic acid, benzoates (also effective as preservatives) (x) polyethylene having an average molecular weight of about 200 to about 400 Glycols, polyalkylene glycol-based anti-gelling polymers such as polypropylene glycol having an average molecular weight of about 1,000 to about 2,000 (xi) paraffins such as octane, decane, dodecane, tridecane, olefins such as decene, dodecene, Water-immiscible organic solvents such as methylene chloride, halogenated alkyls such as 1,1,1-trichloroethane, and terpenes such as D-limonene.
(Xii) Metal ion exchangers such as zeolite and crystalline layered silicate (xiii) Other antifoaming agents such as dyes, fragrances, antibacterial preservatives, and silicones

  The liquid detergent composition of the present invention is dissolved, for example, by adding the component (c) and, if necessary, the component (g) to ion-exchanged water heated to a predetermined temperature, that is, about 80 ° C. If necessary, a strong base such as sodium hydroxide is added at this stage. Next, the acid type compound of alkylbenzene sulfonate and the acid type (b) component in the component (a) are added and mixed until transparent, and then a predetermined amount of the component (d) and the component (a) are added. Add polyoxyalkylene alkyl ether sulfate salt. Other components can be added as appropriate, and after cooling to room temperature, it can be produced by adding a fragrance or a pigment.

  The liquid detergent composition of the present invention is suitable for washing at home and also for hand washing, and is suitably used for hand washing of textile products such as clothing, cloth, bedding, towels and the like.

  The present invention relates to a hand-washing laundry method for hand-washing an object to be cleaned that has been brought into contact with cleaning water containing the liquid detergent composition of the present invention. Examples of the hand-washing washing method using the liquid detergent composition of the present invention include a method of hand washing by bringing the washing water containing the liquid detergent composition of the present invention into contact with an object to be washed such as a fabric and soaking. . When the contact time or the immersion time is long, the cleaning effect is high, and when the contact or immersion is performed for 5 to 15 minutes, a better effect is obtained. A higher effect can be obtained by applying the composition directly to the soiled portion and leaving it for 5 to 15 minutes.

  As the washing water in the hand-washing washing method, the composition of the present invention or a water dilution of the composition (for example, an aqueous solution) is used. The water used here is generally tap water, and tap water in each country including Japan usually has alkalinity (buffer capacity). However, even when the liquid detergent composition of the present invention is diluted with tap water having alkalinity, the pH can be maintained at 8.5 to 10.5 beyond the buffering capacity of the tap water, so as designed. Excellent cleaning performance. The mass of the washing water with respect to the mass of the object to be cleaned such as a fabric is preferably 2 times or more, further 3 times or more, further 5 times or more, 100 times or less, further 50 times or less, and further 25 times or less. Therefore, the mass of the washing water with respect to the mass of the object to be cleaned such as a fabric is preferably 2 to 100 times, more preferably 3 to 50 times, and further preferably 5 to 25 times. When the object to be cleaned such as the fabric brought into contact with the cleaning water according to the present invention is sufficiently rubbed by hand, not only a high detergency is obtained but also abundant foaming is visually preferred.

  After scrubbing, the fabric is taken out from the washing water, squeezed to drain the water, or drained using a dehydrator, and immersed again in fresh water (hereinafter referred to as rinsing water). The rinsing water may be either water stored in a basin or running water. The mass of the rinsing water with respect to the fabric is preferably 2 times or more, further 5 times or more, further 10 times or more, preferably 1,000 times or less, further 500 times or less, based on the total amount of rinsing water used for rinsing. Furthermore, it is 100 times or less. Therefore, the mass of the rinsing water with respect to the fabric is preferably 2 to 1,000 times, more preferably 5 to 500 times, and still more preferably 10 to 100 times, based on the total amount of rinsing water used for rinsing. Since the surfactant remaining in the fabric at the stage of immersing the rinse water is redissolved in the rinse water, foaming is observed. When this operation is repeated several times, the foaming disappears and the rinsing is completed.

  In general washing by hand, for example, when a normal cleaning agent is used, foam generated at the time of washing does not disappear, so it is generally required 5 times or more, but in the present invention, it is rinsed 3 times or less. The rinsing can be completed with very little rinsing water, eliminating the need for wasteful use of water.

  In the liquid cleaning composition of the present invention, at least one of the hardness of the water used for the preparation of the cleaning water and the hardness of the rinsing water is 1 ° DH or higher, more preferably 2 ° DH or higher, from the viewpoint of cleaning power and rinsing properties. Further, it may be 3 ° DH or more, further 4 ° DH or more, and preferably 50 ° DH or less. Therefore, at least one of the hardness of water used for the preparation of cleaning water and the hardness of rinsing water is preferably 1 ° DH to 50 ° DH, more preferably 2 ° DH to 50 ° DH, from the viewpoint of cleaning power and rinsing properties. More preferably, it is 3 ° DH to 50 ° DH, more preferably 4 ° DH to 50 ° DH, and more preferably 8 ° DH to 50 ° DH.

[Second Embodiment]
An example of an aspect included in the present invention will be described as a second embodiment. The following are mentioned as a composition of this invention of a 2nd embodiment.

(A) 5 to 40% by mass of one or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates, (b) fatty acids and / or salts thereof, (c) alkanols A liquid detergent composition comprising an amine, (d) carbonate, (e) a nonionic surfactant, and water,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / alkylbenzene sulfonate salt is 70/30 to 100/0,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (b) is 3/1 to 20/1,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) is 60/40 to 100/0,
(B) includes 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 pH measured at 25 ° C. described in JIS K3362: 2008 8.3 of the liquid detergent composition is 9-11.
Liquid detergent composition.

Here, a C12-14 fatty acid and / or its salt is described as a _C12-14 fatty acid. Moreover, a C16-18 fatty acid and / or its salt are described as a _C16-18 fatty acid.

(B) The liquid detergent composition of the second embodiment containing C _12-14 fatty acid and C _16-18 fatty acid as components is excellent in detergency, foaming property, rinsing property, low temperature storage stability, etc. It is also preferable when considering the stability of the composition.

In the second embodiment, the mass ratio of C _16-18 fatty acid to C _12-14 fatty acid, that is, the mass ratio of C _16-18 fatty acid / C _12-14 fatty acid is preferably 1/99 or more, more preferably 4/96. In addition, 8/92 or more, 12/88 or more, and further 18/82 or more, preferably 60/40 or less, further 50/50 or less, further 40/60 or less, further 30/70 or less, 25/75 or less. Therefore, the mass ratio of C _16-18 fatty acid / C _12-14 fatty acid is preferably 1 / 99-60 / 40, more preferably 4 / 96-, from the viewpoint of improving low-temperature storage stability. 50/50, more preferably 8/92 to 40/60, more preferably 12/88 to 30/70, and still more preferably 18/82 to 25/75.

In the second embodiment, the _C12-14 fatty acid is preferably a C12 fatty acid and / or a salt thereof. Here, the notation fatty having 12 carbon atoms and / or its salt with a C ₁₂ fatty acid. Further, denoted fatty acids having 14 carbon atoms and / or its salt with a C ₁₄ fatty acid. In a second embodiment, preferably comprises a C ₁₂ fatty acid as component (b), C _{12 to 14} ratio of C _{12 to 14} fatty acids based on the total amount of fatty acids 50 mass% or more, more preferably more than 60 wt%, Moreover, 95 mass% or less, Furthermore 90 mass% or less is preferable. Further, (b) When the components as comprising a C ₁₂ fatty acids and C ₁₄ fatty acids, the weight ratio of the content of C ₁₂ fatty acid to the content of C ₁₄ fatty acids, i.e., the weight ratio of the C ₁₂ fatty acid / C ₁₄ fatty acid, From the viewpoint of improving low-temperature storage 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. It is preferable to contain a _C12-14 fatty acid and / or a salt thereof, specifically, lauric acid and / or a salt thereof as the _C12-14 fatty acid. Moreover, as _C16-18 fatty acid, it is preferable to contain a _C16 fatty acid and / or its salt, specifically palmitic acid and / or its salt.

In the second embodiment, it contains fatty acid and / or salts thereof having 12 carbon atoms as a C _{12 to 14} fatty acids, and contains a fatty acid and / or salts thereof having 16 carbon atoms as a C _16-18 fatty acids, C _In the total content of _{12 to 14} fatty acids and C _{16 to 18} fatty acids, the ratio of the total content of 12 fatty acids and / or salts thereof and 16 fatty acids and / or salts thereof is 70% by mass. As described above, it is preferably 80% by mass or more, further 90% by mass or more, more preferably 95% by mass or more, and may be 100% by mass.

  In the second embodiment, the mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate may be 70/30 or more, more 75/25 or more, more 80/20 or more, more preferably 85/15 or more. Also, it 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 polyoxyalkylene alkyl ether sulfate ester salt / alkylbenzene sulfonate salt may be 70/30 to 99/1, preferably 75/25 to 98/2. Preferably it is 80 / 20-95 / 5, More preferably, it is 85 / 15-90 / 10.

  In the second embodiment, from the viewpoint of rapid foam disappearance at the time of rinsing, the mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) component is 60/40 or more, 65/35 or more, and further 70 / 30 or more, more preferably 80/20 or more, more preferably 85/15 or more, and 100/0 or less. From the viewpoint of the low temperature stability of the composition, 99/1 or less, further 98/2 or less, and further 97 / 3 or less, more preferably 95/5 or less. That is, in the second embodiment, the mass ratio of the polyoxyalkylene alkyl ether sulfate / (e) component is 60/40 to 100/0, preferably 60/40 to 99/1, and 65/35 to 99/1 is preferable, 70/30 to 98/2 is preferable, 80/20 to 97/3 is preferable, and 85/15 to 95/5 is more preferable. Here, as the component (e), an average of 1 mol or more, further 4 mol or more, further 6 mol or more, 25 mol or less, and further 12 mol or less of ethylene oxide in an alcohol having 10 to 18 carbon atoms, Further, polyoxyalkylene alkyl ether added with 10 mol or less, and further 8 mol or less can be used.

The liquid detergent composition of the second embodiment contains C _12-14 fatty acid and C _16-18 fatty acid in combination as component (b) and maintains component (e) in order to maintain excellent rinsing properties. It is preferable. When the liquid detergent composition of 2nd embodiment contains (e) component, content of (e) component in a composition is 0.3 mass% or more, Furthermore, 0.5 mass% or more, Furthermore 1 The content is preferably 3% by mass, 3% by mass or less, more preferably 2.5% by mass or less, and further preferably 2% by mass or less. That is, the liquid cleaning composition of the second embodiment can 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, except for the above conditions, the preferred embodiments such as the components and the content are as described above, and thus the description thereof is omitted.

More specific embodiments of the present invention are exemplified below.
<1> (a) 5% by mass or more of an anionic surfactant selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates, further 6% by mass or more, and further 7% by mass or more. 8 mass% or more, 9 mass% or more, 10.5 mass% or more, 40 mass% or less, 30 mass% or less, 20 mass% or less, or 16 mass% or less. 14% by 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, further 9 to 14% by mass, and further 10. A liquid detergent composition containing 5 to 14% by mass, (b) fatty acid and / or salt thereof, (c) alkanolamine, (d) carbonate, (e) nonionic surfactant, and water. There,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester / alkylbenzene sulfonate is 70/30 to 100/0, preferably 75/25 to 100/0, more preferably 80/20 to 100/0, and more preferably. Is 90 / 10-100 / 0, more preferably 95 / 5-100 / 0, more preferably 100/0,
The mass ratio of polyoxyalkylene alkyl ether sulfate / (b) is 3/1 to 20/1, preferably 4/1 to 16/1, more preferably 5/1 to 13/1, more preferably 6 /. 1 to 11/1, more preferably 7/1 to 9/1,
The mass ratio of polyoxyalkylene alkyl ether sulfate / (e) is 60/40 to 100/0, preferably 65/35 to 100/0, more preferably 85/15 to 100/0,
The pH of the liquid detergent composition measured at 25 ° C. described in JIS K3362: 2008 8.3 is 9 or more and 11 or less, that is, 9 to 11, preferably 9 to 10.5, more preferably 9.3 to 10 .2, even more preferably 9.5-10,
Liquid detergent composition.

<2> (a) One or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates of 5% by mass or more, further 6% by mass or more, and more preferably 7% by mass or more. 8 mass% or more, 9 mass% or more, 10.5 mass% or more, 40 mass% or less, 30 mass% or less, 20 mass% or less, or 16 mass% or less. 14% by 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, further 9 to 14% by mass, and further 10. A liquid detergent composition containing 5 to 14% by mass, (b) fatty acid and / or salt thereof, (c) alkanolamine, (d) carbonate, (e) nonionic surfactant, and water. There,
The mass ratio of polyoxyalkylene alkyl ether sulfate / alkylbenzene sulfonate is 70/30 to 100/0, preferably 70/30 to 99/1, more preferably 75/25 to 98/2, still more preferably 80. / 20 to 95/5, more preferably 85/15 to 90/10,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (b) is 3/1 to 20/1,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) is 60/40 to 100/0,
(B) includes 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 pH measured at 25 ° C. described in JIS K3362: 2008 8.3 of the liquid detergent composition is 9-11.
Liquid detergent composition.

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

<4> A fatty acid having 12 to 14 carbon atoms and / or a salt thereof is expressed as a C _12-14 fatty acid, a fatty acid having 16 to 18 carbon atoms and / or a salt thereof is expressed as a C _16-18 fatty acid, and C _{16 to 18} weight ratio of fatty acid / C _{12 to 14} fatty acids, preferably 1/99 or more, more 4/96 or more, more 8/92 or more, further 12/88 or more, further 18/82 or more, preferably Is 60/40 or less, further 50/50 or less, further 40/60 or less, further 30/70 or less, further 25/75 or less, that is, a mass ratio of C _16-18 fatty acid / C _12-14 fatty acid is preferable. Is 1/99 to 60/40, more preferably 4/96 to 50/50, more preferably 8/92 to 40/60, more preferably 12/88 to 30/70, still more preferably 18/82 to 25 / 75, the liquid according to <2> or <3> Body cleaning composition.

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

<6> fatty having 12 carbon atoms and / or a salt thereof is expressed as C ₁₂ fatty acids, fatty acid having 14 carbon atoms and / or expressed its salt with a C ₁₄ fatty acids, C ₁₂ fatty acids and C as component (b) ₁₄ and a fatty acid, C ₁₂ weight ratio C ₁₂ fatty acid / C ₁₄ fatty acid content of the fatty acid is 3.5 / 1 or more to the content of C ₁₄ fatty acid is further 4/1 or more, the <2> ~ <5> The liquid cleaning composition according to any one of the above.

<7> fatty acids 12-14 carbon atoms and / or a salt thereof is expressed as C _12-14 fatty acids, and notation fatty having 16 to 18 carbon atoms and / or a salt thereof with C _16-18 fatty acids, C ₁₂ containing fatty acids and / or salts thereof having 12 carbon atoms as _-14 fatty acids, and contains a fatty acid and / or salts thereof having 16 carbon atoms as a C _16-18 fatty acids, C _{12 to 14} fatty acids and C _16-18 fatty acids The total content of the fatty acid having 12 carbon atoms and / or a salt thereof and the fatty acid having 16 carbon atoms and / or a salt thereof is 70% by mass or more, further 80% by mass or more, and further 90%. The liquid cleaning composition according to any one of <2> to <6>, wherein the liquid cleaning composition is preferably not less than mass%, more preferably not less than 95 mass%, and may be 100 mass%.

<8> (a) has an alkyl group having 10 or more carbon atoms, 12 or more carbon atoms, 20 or less carbon atoms, and 14 or less carbon atoms, and the average number of added moles of the alkyleneoxy group is 0 or more and further greater than 0. 0.5 or more, further 1 or more, 5 or less, further 4 or less, and further 3 or less polyoxyalkylene alkyl ether sulfate ester salt, specifically alkyl having 10 to 20 carbon atoms, preferably 12 to 14 carbon atoms <1> to <1>, which is a polyoxyalkylene alkyl ether sulfate salt having a group and having an average addition mole number of an alkyleneoxy group of 0 to 5, preferably 0.5 to 4, and more preferably 1 to 3. 7> The liquid detergent composition according to any one of the above.

<9> (b) is a fatty acid having 10 or more carbon atoms, 12 or more carbon atoms, 18 or less carbon atoms, and 14 or less carbon atoms, that is, a fatty acid having 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms, The liquid cleaning composition according to <1> or <8>.

<10> The above <1> or <8> or <9>, 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 as described.

<11> The content of (b) is 0.4 mass% or more, further 0.5 mass% or more, further 0.6 mass% or more, further 0.7 mass% or more, further 0.8 mass% or more, Further, it is 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% by mass, more preferably. <1> to 0.5 to 4% by mass, more preferably 0.6 to 3% by mass, more preferably 0.7 to 2% by mass, and more preferably 0.8 to 1.5% by mass. <10> The liquid cleaning composition according to any one of the above.

<12> (c) has a pKa at 25 ° C. of 8.5 or more, further 8.7 or more, further 9 or more, 10.6 or less, further 10 or less, and further 9.6 or less, that is, 8.5. Any one of the above <1> to <11>, which is an alkanolamine, preferably a monoalkanolamine, more preferably monoethanolamine in the range of ˜10.6, further 8.7-10, and further 9-9.6. The liquid detergent composition as described.

<13> The liquid according to any one of <1> to <12>, wherein (d) is one or more compounds selected from the group consisting of an alkali metal hydrogen carbonate, an alkali metal carbonate, and an alkali metal sesquicarbonate. Cleaning composition.

<14> The liquid detergent composition according to any one of <1> to <13>, wherein (d) is a sodium hydrogen carbonate salt.

<15> (e) is a polyoxyalkylene alkyl ether in which ethylene oxide is added to an alcohol having 10 to 18 carbon atoms on average in an amount of 1 mol or more, further 2 mol or more, 12 mol or less, and further 4 mol or less, The liquid washing according to any one of <1> to <14>, which is a polyoxyalkylene alkyl ether obtained by adding 1 to 12 moles, preferably 2 to 4 moles, of ethylene oxide to an alcohol having 10 to 18 carbon atoms on average. Agent composition.

<16> The content of (e) in the composition is 3% by mass or less, preferably 2.5% by mass or less, more preferably 2% by mass or less, more preferably 1% by mass or less, and still more preferably 0.8%. The liquid detergent composition according to any one of <1> and <8> to <15>, which is 1% by mass or less, and more preferably 0% by mass.

<17> The content of one or more foam boosters selected from amine oxide and betaine is 5% by mass or less, preferably 3% by mass or less, more preferably 1.5% by mass or less in the total surfactant. The liquid cleaning composition according to any one of <1> to <16>.

<18> The liquid detergent composition is alkalinity = 65CaCO ₃ mg / l, pH = 7.1.
The pH measured at 25 ° C. described in JIS K3362: 2008 8.3 of a water dilution diluted 200 times with water 5 is 8.5 or more, further 8.7 or more, further 8.9 or more, and further 9 or more. And 10.5 or less, further 10.1 or less, 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. The liquid detergent composition according to any one of <1> to <17>, which is 10.1, more preferably 8.9 to 9.7, and still more preferably 9 to 9.5.

<19> A hand-washing laundry method for hand-washing an object to be cleaned that has been brought into contact with cleaning water containing the liquid detergent composition according to any one of <1> to <18>, wherein the cleaning water is a mass of the object to be cleaned. The hand-washing washing method whose mass is 2 to 100 times.

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

  Liquid detergent compositions shown in Tables 1 and 2 were prepared using the following components, and foaming properties, rinsing properties and cleaning power were evaluated by the following methods. The results are shown in Tables 1 and 2.

<Blending ingredients>
AES-Na (EO = 2): polyoxyethylene (average number of moles added 2) sodium lauryl ether sulfate ester, Emar 270J (manufactured by Kao Corporation)
LAS-Na: sodium laurylbenzenesulfonate, Neoperex G-15 (manufactured by Kao Corporation)
・ Lauric acid: LUNAC L-98 (manufactured by Kao Corporation)
・ Myristic acid: LUNAC MY-98 (manufactured by Kao Corporation)
Palmitic acid: LUNAC P-95 (manufactured by Kao Corporation)
・ Stearic acid: LUNAC S-98 (manufactured by Kao Corporation)
Coconut oil fatty acid: Lunac L-55 (manufactured by Kao Corporation, having fatty acids having 12, 14, and 16 carbon atoms as main constituent fatty acids) The mass ratio of each fatty acid in the coconut oil fatty acid is as follows. C10 fatty acid: 1% by mass, C12 fatty acid: 57% by mass, C14 fatty acid: 22% by mass, C16 fatty acid: 10% by mass, C18 saturated fatty acid: 3% by mass (C18 unsaturated fatty acid: 7% by mass)
・ Alkylamidopropyl betaine: Anhithol 20HD (manufactured by Kao Corporation)
AE (EO = 7): polyoxyethylene alkyl ether obtained by adding an average of 7 moles of ethylene oxide to a primary alcohol having 10 to 14 carbon atoms AE (EO = 20): ethylene oxide to a primary alcohol having 10 to 14 carbon atoms Polyoxyethylene alkyl ether / sodium polyacrylate added with an average of 20 mol: weight average molecular weight 8000, oligomer D (manufactured by Kao Corporation)

<Method for preparing underwear for evaluation>
Commercial underwear 2.5kg [Gunze (YG1614 round neck L size 100% cotton)] in a washing machine (Panasonic NA-F70PB1 '2008), water temperature 20 ° C, 89.5mg in terms of calcium carbonate
Washing was repeated 5 times using / L hard water to remove the treatment agent. Washing conditions were 54L of water, 12 minutes of washing, two rinses, and 5 minutes of dehydration. At that time, a nonionic surfactant (a primary alcohol composed of an alkyl group having 12 carbon atoms added with an average of 6 mol of oxyethylene group), amorphous sodium silicate, and sodium carbonate 1: 1: 1. A mixture with a mass ratio of 0.5 g / L was used. Thereafter, running water was rinsed with a two-tank washing machine (manufactured by HITACHI, PS-H35L'2008) using hard water having a water temperature of 20 ° C. and 89.5 mg / L in terms of calcium carbonate.
When rinsing was stopped, rinsing was performed until the foam disappeared completely, and the treatment agent and the cleaning component were removed and dried by natural drying, and used as an underwear for evaluation.

(1) Evaluation of foaming property In a model circular washbasin (a cylindrical acrylic container with a bottom diameter of 25 cm and a height of 15 cm), a water temperature of 20 ° C. and 179 mg / L in terms of calcium carbonate (this hard water has a German hardness of 10 ° DH) corresponding), alkalinity 65CaCO ₃ mg / l, hard water pH7.15 [calcium chloride _{(CaCl 2 · 2H 2 O)} 1.57g magnesium sulphate _{(MgSO 4 · 6H 2 O)} 1.45g and sodium bicarbonate 1.6g Ion exchange water is added to make 10 L, and adjusted with hydrochloric acid, Ca / Mg = 6/4 (molar ratio)] 3 L is injected. Thereto, 20 g of the liquid detergent composition is added and dissolved. Next, the adjustment oil shown below was heated there (60 ° C.), and dropped to 3 g by 1 g (about 0.33 g per sheet) using a spoid (φ: 2 mm) at the neck. Put on the underwear and let it stand for 15 minutes in a state completely immersed in the cleaning solution. After leaving for 15 minutes, it is washed 50 times per piece of undergarment (converted to 1 in 1 reciprocation (about 1 second) while rubbing the cloths together). Thereafter, the underwear is taken out, and the state of the washing liquid immediately after the squeezing is performed 10 cm above the basin so that the moisture content of the underwear is about 100 to 140% with respect to the underwear. Points are given according to the following criteria.
Point 6: Bubbles with a bubble height of 2 cm or more cover the entire liquid surface 5: Bubbles with a bubble height of 1 cm or more cover the entire liquid surface 4: Bubble heights of 0.7 cm or more over the entire liquid surface Bubbles less than 0 cm are covered 3: Bubbles with a bubble height of 0.4 cm or more and less than 0.7 cm are covered over the entire liquid surface 2: Bubbles with a bubble height of 0.2 cm or more and less than 0.4 cm are spread all over. 1: Bubble height is less than 0.2 cm

* Adjusted oil Lauric acid 1% by mass, myristic acid 7.1% by mass, pentadecanoic acid 5.3% by mass, palmitic acid 14.2% by mass, heptadecanoic acid 1% by mass, stearic acid 3.6% by mass, oleic acid 17 0.8% by mass, 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) Rinsability evaluation In a model circular washbasin (a cylindrical acrylic container having a bottom diameter of 25 cm and a height of 15 cm), a water temperature of 20 ° C., converted to calcium carbonate, 179 mg / L, alkalinity 65 CaCO ₃ mg /
1 (this hard water is equivalent to 10 ° DH in German hardness), 5 L of hard water having a pH of 7.15 (prepared in the same manner as used in the evaluation of foaming properties), and evaluation in which the above evaluation of foaming properties was performed. 3 undergarments will be introduced. After rinsing the undergarment in the water, lift the loose undergarment one by one from the bath, lifting it up from the bath to the height of about 5 cm above the washbasin until the entire clothing is removed. Return to the bath again. After rinsing by such up-and-down movement is repeated 10 times for each undergarment, the undergarment is squeezed 10 cm above the basin so that the moisture content of the undergarment is about 100 to 140% of the undergarment. Rinse the three underwears and observe the level of the rinse water immediately after the dehydration is finished. This is one evaluation. Further, rinse water is added to the dehydrated underwear, and this evaluation is repeated two more times (three underwears are used for one liquid detergent composition including the above-mentioned foaming property evaluation), and the sum of points is obtained. The rinse was evaluated.
Point 6: Foam with a height of 1 cm or more remains on the entire liquid surface 5: Foam remains on the entire liquid surface (less than 1 cm)
4: Bubbles remain at about 1/2 of the liquid level 3: Bubbles remain at about 1/4 of the liquid level 2: Fine bubbles remain at the liquid level 1: Bubbles remain at the liquid level Absent

(3) Detergency evaluation <Production of artificially contaminated cloth>
Artificial stains used were 6cm x 6cm cotton / polyester blended broad-dyed fabric (cotton / polyester ratio = 65/35 purchased from Tanigami Shoten). Gravure coating.

* Artificial dirt The composition containing the following A, B, C, D, E was used as artificial dirt. Each mass% is a ratio in the artificial dirt of the final composition, and the amount of B was adjusted so that the total was 100 mass%. A: Adjustment oil used in the evaluation of foaming properties (mass% in artificial dirt is 0.44 mass% lauric acid, 3.15 mass% myristic acid, 2.35 mass% pentadecanoic acid, 9.31 palmitic acid) Wt%, heptadecanoic acid 0.44 wt%, stearic acid 1.6 wt%, oleic acid 1.91 wt%, trimyristin 13.33 wt%, n-hexadecyl palmitate 5.22 wt%, squalene 6.66 (Use in an amount of mass%)
B: Hard water obtained by weighing 105 mg of calcium chloride (dihydrate) and dissolving in distilled water to obtain 1,000 ml C: 1.98% by mass of egg white lecithin liquid crystal (11.37 g of arginine hydrochloride, 80 ml of distilled water, histidine 4. Dissolve 4.20 g and 2.44 g of serine, adjust the pH to 5.0 with concentrated hydrochloric acid, and then thoroughly mix this solution with egg white lecithin using a mixer. D: Kanuma Akado 11% by mass
E: Carbon black 0.025 mass%

<Cleaning conditions>
3 g of the liquid detergent composition is dissolved in 1 L of hard water (prepared in the same manner as used in the evaluation of foaming property) of 179 mg / L in terms of calcium carbonate, alkalinity 65CaCO ₃ mg / l, pH 7.15, Thereto, 4 artificially contaminated cloths were put and washed with a targotometer under the following conditions.
Washing time 10 minutes Water temperature 20 ° C
Detergency was measured with a colorimetric colorimeter (Nippon Denshoku Co., Ltd., Z-300A) for the reflectance at 550 nm before and after washing, and the washing rate (%) was determined by the following formula. (The values in the table are average values of the cleaning rates of 4 sheets).
Washing rate (%) = 100 × [(reflectance after washing−reflectivity before washing) / (reflectance of base fabric−reflectivity before washing)]

In the table, “200-fold water dilution” of pH is the pH of a water dilution obtained by diluting the liquid detergent composition 200-fold with water at pH = 7.15 and alkalinity = 65CaCO ₃ mg / l. P
“After addition of hydrochloric acid” of H is the pH after adding 0.5 g of 1N hydrochloric acid per liter to the above water dilution.

(4) Low temperature stability evaluation <Evaluation method>
The liquid detergent composition shown in Table 3 was transferred to a standard bottle (PS-No.6 Hiroguchi Standard Bottle, manufactured by Ishida Container Co., Ltd.) having a volume of 50 ml, sealed, and an error range of 0 ° C. or 5 ° C. was ±± It left still in the thermostatic chamber set to 1 degreeC. And the state of the 3rd day after standing was evaluated visually. The evaluation criteria are as follows. The results are shown in Table 3.
◯: No precipitate is observed in the sample solution after the storage period ends at 5 ° C.
A: No precipitate is observed in the sample solution after the storage period is completed at 0 ° C. storage conditions.

Claims (22)

(A) 5 to 40% by mass of one or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates, (b) fatty acids and / or salts thereof, (c) alkanols A liquid detergent composition comprising an amine, (d) carbonate, (e) a nonionic surfactant, and water,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / alkylbenzene sulfonate salt is 70/30 to 100/0,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (b) is 3/1 to 20/1,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) is 60/40 to 100/0,
(D) is calculated in terms of sodium salt and contains 0.5% by mass or more and 5% by mass or less,
The pH measured at 25 ° C. described in JIS K3362: 2008 8.3 of the liquid detergent composition is 9-11.
Liquid detergent composition. The liquid detergent composition according to claim 1 , wherein (c) is an alkanolamine having a pKa at 25 ° C in the range of 8.5 to 10.6 . (A) 5 to 40% by mass of one or more anionic surfactants selected from the group consisting of polyoxyalkylene alkyl ether sulfates and alkylbenzene sulfonates, (b) fatty acids and / or salts thereof, (c) 25 A liquid detergent composition comprising an alkanolamine having a pKa in the range of 8.5 to 10.6, (d) carbonate, (e) a nonionic surfactant, and water,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / alkylbenzene sulfonate salt is 70/30 to 100/0,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (b) is 3/1 to 20/1,
The mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) is 60/40 to 100/0,
The pH measured at 25 ° C. described in JIS K3362: 2008 8.3 of the liquid detergent composition is 9-11.
Liquid detergent composition. The liquid detergent composition in any one of Claims 1-3 whose (b) is a C10-C18 fatty acid . The liquid detergent composition according to any one of claims 1 to 4, 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 excellent in both foaming property and rinse property in washing | cleaning of clothing in any one of Claims 1-5. The (a) is a polyoxyalkylene alkyl ether sulfate ester salt having an alkyl group having 10 to 20 carbon atoms and an average addition mole number of an alkyleneoxy group of 0.5 to 5. Or a liquid detergent composition. The liquid detergent composition according to any one of claims 1 to 7, wherein (a) is an alkylbenzene sulfonate having a linear alkyl group having 8 to 20 carbon atoms. The liquid cleaning composition in any one of Claims 1-8 whose content of (a) is 7-20 mass%. The liquid cleaning composition in any one of Claims 1-9 whose content of (b) is 0.4-5 mass%. The liquid detergent composition according to any one of claims 1 to 10, wherein (c) is a monoalkanolamine. The liquid cleaning composition according to any one of claims 1 to 11, wherein the content of (c) is 0.1 to 10% by mass. The liquid detergent composition according to any one of claims 1 to 12, wherein (d) is one or more compounds selected from the group consisting of an alkali metal hydrogen carbonate, an alkali metal carbonate, and an alkali metal sesquicarbonate. The liquid detergent composition according to any one of claims 1 to 13, wherein (d) is calculated by an amount in terms of sodium salt and is contained in an amount of 0.5% by mass or more and 4% by mass or less. The liquid detergent composition according to any one of claims 1 to 14, wherein (e) is a polyoxyalkylene alkyl ether obtained by adding an average of 1 to 12 moles of ethylene oxide to an alcohol having 10 to 18 carbon atoms. The liquid cleaning composition according to any one of claims 1 to 15, wherein the content of (e) is 3% by mass or less. The liquid detergent composition according to any one of claims 1 to 16, wherein a mass ratio of the polyoxyalkylene alkyl ether sulfate salt / (b) is 5/1 or more and 9/1 or less. The liquid detergent composition according to any one of claims 1 to 17, wherein the mass ratio of polyoxyalkylene alkyl ether sulfate ester salt / (e) is 80/20 to 100/0. The liquid detergent composition according to any one of claims 1 to 18, wherein the content of one or more foam boosters selected from amine oxide and betaine is 5% by mass or less in the composition. The liquid detergent composition according to any one of claims 1 to 19, wherein the liquid detergent composition has a pH of 9.3 to 10.2 measured at 25 ° C according to JIS K3362: 2008 8.3. The liquid detergent composition according to any one of claims 1 to 20, which is for hand-washing laundry. It is a hand-washing washing method which carries out the hand washing of the to-be-washed object which contacted the wash water containing the liquid detergent composition in any one of Claims 1-2, Comprising: The mass of the wash water with respect to the mass of the to-be-washed object is 2-100. Double hand washing method.