KR101900980B1 - Liquid cleaner - Google Patents

Abstract

According to the present invention, there is provided a liquid detergent capable of realizing that the contamination is lost even if the tableware or the like is covered with foam during cleaning while maintaining the bubble power. The present invention relates to a composition containing a compound (a) represented by the general formula (a1) and at least one (b) of an amphoteric surfactant and a semipolar surfactant, wherein the mass ratio represented by the component (a) / 0.5 to 6. < / RTI > In formula (a1), x and y are each an integer of 1 to 7, and x + y = 8. PO represents an oxypropylene group, and EO represents an oxyethylene group. p is the average number of repeats of PO, q is the average number of repeats of EO, and p + q is 1 to 10. M represents an alkali metal, an alkaline earth metal, ammonium or alkanolamine.

Description

LIQUID CLEANER [0002]

The present invention relates to a liquid detergent.

The present application claims priority under Japanese Patent Application No. 2011-102349, filed on April 28, 2011, and Japanese Patent Application No. 2011-111607 and Japanese Patent Application No. 2011-111458, filed on May 18, 2011 And the contents are used here.

Cleaning of a tableware or a cooking utensil is usually carried out by further adding a liquid cleaning agent for kitchen to a sponge. In the liquid detergent for kitchen, a high washing power, a foaming diary, a foaming property (a foaming amount, a bubble diary speed) are required for oil contamination attached to a dishware or a cooking utensil.

In order to improve the detergency against foaming of oil, the foaming date and the improvement of the lip properties, conventionally, components exhibiting cleaning effect such as anionic surfactant, nonionic surfactant and amphoteric surfactant are appropriately combined with the liquid cleaner for kitchen .

For example, a liquid detergent containing a specific polyoxyethylene alkyl ether sulfuric acid ester salt and an amine oxide type surfactant has been proposed (see Patent Documents 1 and 2).

For example, there has been proposed a liquid detergent containing a specific polyoxyalkylene alkyl ether sulfuric acid ester salt, an amine oxide type surfactant, a hydrotrope agent, an organic solvent and 2-ethylhexyl monoglyceryl ether (See Patent Document 3).

Japanese Patent Application Laid-Open No. 2008-156589 Japanese Patent Application Laid-Open No. 2008-156590 Japanese Patent Application Laid-Open No. 2010-13579

However, since the surfaces of tableware and the like are covered with bubbles while the tableware or the like is being cleaned by using the sponge, it is difficult to confirm contamination dropout during cleaning in the conventional liquid detergent.

For this reason, it is impossible to confirm that the contamination has fallen from the tableware or the like unless the rinsing is completed. If it is confirmed that the contamination remains in the tableware after the rinsing, there is a problem that the cleaning must be performed again. It is difficult to obtain satisfactory satisfaction of contamination and dropping of tableware or the like due to the reason that the amount of foam is insufficient or the foam journal is slow.

In addition, when the amount of foam is reduced during cleaning of a tableware or a cooking utensil, or when a tableware or the like with contaminated oil is cleaned, a liquid cleaning agent is newly poured into the sponge to perform cleaning.

However, in a conventional liquid detergent containing a polyoxyethylene alkyl ether sulfuric acid ester salt and an amine oxide type surfactant at the time of cleaning dishware or the like to which pollution with a large amount of oil is adhered, the lipid property (the foam amount, ) Is insufficient. Further, there is a problem that when the liquid detergent is poured into the sponge in a large amount and the amount of the liquid detergent is increased, rinsing property (no slipperiness, no foam) is deteriorated. In particular, when the liquid detergent poured into the sponge is attached directly to dishes or the like, it takes time until the slippery is not felt from the tableware or the like due to rinsing, and labor is required.

Further, the liquid detergent containing the polyoxyalkylene alkyl ether sulfuric acid ester salt and the amine oxide type surfactant has excellent detergency and lyophilicity, but when the rinse is carried out, the slip due to the influence of the surfactant is felt in the hand skin There is a problem in that it takes time until it is no longer used, labor is required, and the amount of water used increases. Particularly, when the liquid detergent is poured into the sponge in a large amount and the amount thereof used is increased, this problem becomes conspicuous.

According to the invention described in Patent Document 3, the reduction of slag upon cleaning of tableware and the like is achieved by the blending of 2-ethylhexyl monoglyceryl ether, but the effect of reducing the slag is insufficient.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to provide a liquid detergent capable of realizing that contamination is lost even when a tableware or the like is covered with foam during cleaning while maintaining bubble power.

Another object of the present invention is to provide a liquid detergent which is excellent in both ripness and rinsability even when cleaning tableware or the like to which dirt with a large amount of oil is adhered.

It is another object of the present invention to provide a liquid detergent which has excellent cleaning performance and in which slip of the hand skin is suppressed when cleaning dishes and the like.

The combination of the commonly used straight chain alcohol ethoxy sulfuric acid and the amine oxide type semi-polar or semi-polar surfactant or amphoteric surfactant can improve the washing power and the bubble date. However, during cleaning, The surface is covered with bubbles and can not be confirmed unless the contaminated state is rinsed. On the other hand, in the combination of these surfactants, when the amount of the surfactant is increased in order to improve the removability of the contamination, the rinsing property (good foam free property, no slippery property) There is a problem that the bubble diary is delayed when the amount of the surfactant is reduced.

As a result of intensive investigations, the inventors of the present invention have found that an anionic surfactant having a specific structure is selected from branched-chain compounds which are generally difficult to form a contact state and are suitable components for a low foaming composition, (Bubbling easiness, foaming amount) is maintained while the tableware or the like is covered with the foam in the cleaning while the foaming power And it is possible to realize that the contamination has fallen from the tableware or the like, and the present invention has been accomplished.

The inventors have also found that a combination of an anionic surfactant having a specific structure and a nonionic surfactant is selected from branched-chain compounds which are generally difficult to form a state of association and which are suitable components for a low foaming composition, The present invention has been accomplished upon discovering that the aforementioned problems can be solved by using other cleaning components and the anionic surfactant in combination at a predetermined mixing ratio.

Further, the present inventors have found that an anionic surfactant having a specific structure is selected from branched-chain compounds which are generally difficult to form a state of association and are suitable components for a low foaming composition, and a cleaning component other than the above- Glyceryl ether in combination with the above-mentioned method, and thus the present invention has been accomplished.

That is, one embodiment of the liquid detergent of the present invention is a composition containing a compound (a) represented by the following general formula (a1) and at least one of an amphoteric surfactant and a semipolar surfactant (b) (b) has a mass ratio of 0.5 to 6.

[Chemical Formula 1]

Wherein x and y are each an integer of 1 to 7, and x + y = 8. PO represents an oxypropylene group, and EO represents an oxyethylene group. p is the average number of repeats of PO, q is the average number of repeats of EO, and p + q is 1 to 10. M represents an alkali metal, alkaline earth metal, ammonium or alkanolamine]

Further, p + q may be 0 to 10.

In one embodiment of the liquid detergent of the present invention, a compound selected from a fatty acid monoethanolamide compound (c), a compound (d) represented by the following formula (d1) and a compound (f) represented by the following formula It is also preferable to contain them.

Even if two or more compounds selected from the fatty acid monoethanolamide compound (c), the compound (d1) shown below and the compound (f) represented by the following formula (f1) good.

(2)

[In the formula (d1), i and j are each an integer of 1 to 6, and 6? I + j? 12. PO represents an oxypropylene group, and EO represents an oxyethylene group. s is the average number of repeats of PO, t is the average number of repeats of EO, s + t is 6 to 12,

(3)

Wherein R ¹ represents a linear or branched alkyl group having 6 to 14 carbon atoms or a linear or branched alkenyl group having 6 to 14 carbon atoms. n represents an average number of repeats and is a number of 1 to 4]

In the liquid detergent of the present invention, it is preferable that the mass ratio represented by the component [component (a) + component (b)] / component (d) is 2 to 15.

In the liquid detergent of the present invention, it is preferable that the mass ratio represented by [component (a) + component (b)] / (component f) is 3 to 160.

According to the liquid detergent of the present invention, it is possible to realize that the contamination is reduced even if the tableware or the like is covered with foam during cleaning while maintaining the bubble power.

Further, according to the present invention, it is possible to provide a liquid detergent which is excellent both in ripness and rinsability even when cleaning tableware or the like with contamination of a large amount of oil.

Further, according to the present invention, it is possible to provide a liquid detergent which has excellent cleaning performance and in which slipping of the skin of the hand is suppressed when washing dishes and the like.

One embodiment of the liquid detergent of the present invention contains the compound (a) represented by the general formula (a1) and at least one of the amphoteric surfactant and the semipolar surfactant (b).

Hereinafter, these components are referred to as component (a) and component (b), respectively.

The liquid detergent of the present invention may further contain the compound (d) represented by the above-mentioned formula (d1).

The liquid detergent of the present invention may further contain the compound (f) represented by the above general formula (f1).

The liquid detergent of the present invention can be suitably used as a detergent for hard surfaces. Here, the term "hard surface" refers to a surface made of a hard material such as a ceramic, porcelain, glass, hard plastic, metal, painted metal, or tile. Specific examples thereof include tableware, cookware, toilet bowl, window glass, glass for a vehicle, glasses, transparent plastic, mirror; A bathtub, a wall or floor of a bathroom, a sink, a sink, and the like. Among them, the liquid detergent of the present invention can be suitably used particularly as a detergent for kitchens such as tableware, cooking utensils and the like.

≪ Compound (a) >

In the liquid detergent of the present invention, the compound (a) is an anionic surfactant having a branched alkyl group represented by the following general formula (a1).

By virtue of containing the component (a), excellent pourable properties (the amount of foam, the speed of foaming) and the rinsability are imparted.

(bubble amount, speed of foaming) and rinsability (rubbing property) for contamination having a large amount of oil mainly by using the component (a) and the components (b) No fading, no bubbles) can be obtained. In addition, a high cleaning effect against oil contamination can be obtained.

By using the component (a) and the components (b) and (f) described later in combination, it is possible to inhibit slipping of the skin of the hand when washing dishes and the like.

[Chemical Formula 4]

Wherein x and y are each an integer of 1 to 7, and x + y = 8. PO represents an oxypropylene group, and EO represents an oxyethylene group. p is the average number of repeats of PO, q is the average number of repeats of EO, and p + q is 1 to 10. M represents an alkali metal, alkaline earth metal, ammonium or alkanolamine]

In the formula (a1), x and y are each an integer of 1 to 7, and x + y = 8. x + y = 8, it is possible to realize that the contamination is lost even when the tableware or the like is covered with the foam during the cleaning (the feeling of being washed is given). Further, when x + y = 8, both the ripness and the rinsing property become good. In addition, it is easy to suppress slip of the skin of the hand when washing utensils and the like.

C _x H _{2x + 1} and C _y H _{2y + 1} each represent a straight chain alkyl group or a branched chain alkyl group, and from the viewpoint of real feeling of washing, easiness of foaming, ease of pilling, From the balance of the performance, a linear alkyl group is preferable. Among them, C _x H _{2x + 1} and C _y H _{2y + 1} are particularly preferably a combination of a propyl group and a pentyl group (one of x and y is 3 and the other is 5).

In the formula (a1), PO represents an oxypropylene group, EO represents an oxyethylene group, p represents an average number of repeats of PO, and q represents an average number of repeats of EO.

p + q is 1 to 10, and preferably 1 or more, and particularly preferably 3 or more as the lower limit. The upper limit value is preferably 5 or less, and particularly preferably 4 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, p + q is preferably 1 to 5, and particularly preferably 3 to 4.

p + q may be 0 to 10. When p + q is in the range of 0 to 10, the washing power is excellent and the pilling property is good. Further, the low temperature stability of the liquid detergent is further improved.

Further, when p + q is in the range of 1 to 10 as described above, and contamination from dishes or the like is lost even when cleaning is carried out by combination with the component (b) described later, friction occurs between the sponge and the dishware And it is easy to obtain the real feeling of the end of washing. In addition, the rinsing property (good bubble disappearance, no slip) becomes good. Further, the detergency is increased and the foaming becomes easier.

Further, when p + q is in the range of 1 to 10, slipping of the hand skin is easily suppressed. In addition, the cleaning ability is excellent, the pilling property and the rinsing property are improved.

Since the component (a) has a high ability to lower the dynamic interfacial tension (interfacial tension), the component (a) has a high diffusion speed in the cleaning liquid. Incidentally, the components (a) and (b) do not stay long between the sponge and the dishware. Therefore, when oil contamination or the like is removed while cleaning a tableware or the like with a sponge containing a liquid detergent, a friction feeling that is "pinched" between the sponge and a tableware is felt. Thus, it is considered that even if the tableware or the like is covered with the foam during the cleaning, it is possible to realize that the contamination has fallen.

q is preferably 1 to 10, more preferably 1 to 5.

p is preferably from 0 to 9, and more preferably from 0 to 4, from the viewpoint of real feeling of the end of cleaning, foamy weather, and pliability, and balance of ripness and rinsing performance.

In the case where PO and EO are mixed, the arrangement state of PO and EO is not particularly limited, and they may be mixed in a random phase or may be mixed together in a block form.

p and q represent the " average " repetition number of PO and EO, respectively. That is, the compound represented by the formula (a1) is a collection of PO and EO repetition numbers of other molecules (including molecules having no PO or EO). In addition, the combination of the C _x H _{2x +1} and C _y H _{2y +1} may be an aggregate of other molecules.

In the formula (a1), M is an alkali metal, an alkaline earth metal, ammonium or alkanolamine, and (C _x H _{2x +1} ) (C _y H _{2y +1} ) CH-CH ₂ O- (PO) p _{- (EO) q-SO 3} - may be as long as it can form a water-soluble salt with.

Examples of the alkali metal include sodium, potassium and the like. Examples of the alkaline earth metals include calcium, magnesium and the like. Examples of the alkanolamine include monoethanolamine, diethanolamine, triethanolamine and the like.

The component (a) may be used singly or in combination of two or more.

Among them, as the component (a), it is preferable that the component (a) is a sulfur oxide of an alkylene oxide adduct of an alcohol having a branched structure on the? Obtained by two-molecule condensation by the Gaberbet reaction.

The component (a) can be produced by reacting an alkylene oxide adduct of Garbet alcohol with a liquid anhydrous solution using a tank type reaction method, a film type reaction method, a tubular gas-liquid mixed- Sulfuric acid by mixing with sulfuric acid or by contact with SO ₃ gas, and then neutralizing with an alkali metal compound, an alkaline earth metal compound, ammonium or alkanolamine or the like.

Specific examples of the alkylene oxide adducts of the sorbitol include ruthenol P30 (average molar number of added ethylene oxide of 3), ruthenol P40 (average addition mole number of ethylene oxide: 4) manufactured by BASF, ruthenol L40 The average addition mole number of the seed is 1, and the average addition mole number of the ethylene oxide is 3) (above, trade name).

Specific examples of the component (a) include compounds obtained by sulfating an alkylene oxide adduct having an average addition mole number of 3 of ethylene oxide and neutralizing it with sodium hydroxide, an alkylene oxide adduct having an average addition mole number of 4 of ethylene oxide, , A compound obtained by neutralizing an adduct of an alkylene oxide having an average addition mole number of 4 of propylene oxide with sodium hydroxide and neutralizing with sodium hydroxide, and the like.

In the liquid detergent, the blending amount of the component (a) is preferably 5% by mass or more, more preferably 15% by mass or more, and further preferably 20% by mass or more as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 40 mass% or less, and more preferably 35 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. The amount of the component (a) in the liquid detergent is preferably 5 to 40 mass%, more preferably 15 to 35 mass%, and more preferably 20 to 35 mass%, relative to the total mass of the liquid detergent, More preferably, it is in mass%.

If the blending amount of the component (a) is less than the lower limit, it becomes difficult to obtain the real feeling of the end of the cleaning. Further, it is likely that the foaming becomes difficult or the rinsing property is deteriorated. On the other hand, if the upper limit is exceeded, the rinsing property tends to deteriorate.

When the blending amount of the component (a) is lower than the lower limit value, the ripping property and the rinsing property at the time of cleaning the tableware or the like with contamination with a large amount of oil become better. In addition, it is easy to obtain a sense of realism (rubbing feeling, pale impression) at the end of cleaning. On the other hand, if the upper limit is exceeded, the rinsability may be deteriorated.

<Amphoteric surfactant and semi-polar surfactant (b)>

In the present invention, when at least one (b) of the amphoteric surfactant and the semi-polar surfactant is used in combination with the component (a) at a predetermined mixing ratio, if the contamination is dropped mainly from the tableware or the like during cleaning, And the like, and a feeling of being washed is imparted. In addition, high cleaning power against oil contamination, good foaming easiness and rinsability can be obtained.

(Amphoteric surfactant)

Examples of the amphoteric surfactant include betaine-type surfactants such as betaine aminoacetate (alkylbetaine, alkylamide betaine, etc.) and sulfobetaine (such as alkylhydroxysporobetaine); Glycine-based ones (imidazolinium betaine and the like), aminopropionic acid-based ones and the like.

Specific examples of the amphoteric surfactant include aminoacetic acid betaine such as lauryldimethylaminoacetic acid betaine and lauric acid amide propyldimethylaminoacetic acid betaine; N-lauryl-N, N-dimethylammonium-N-propylsulfobetaine, N-lauryl-N, N-dimethylammonium N- (2- hydroxypropyl) sulfobetaine, , Sulfobetaines such as N-dimethyl-N- (2-hydroxy-1-sulfopropyl) ammonium sulfobetaine; Glycine-based ones such as 2-lauryl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine and lauryldiaminoethylglycine sodium; Aminopropionic acid-based ones such as sodium laurylaminopropionate and sodium laurylaminopiperphionate.

(Semi-polar surfactant)

In the present invention, a "semi-polar surfactant" is a surfactant having a semi-polar bond (a bond having a property of non-polar bonding and a polar bonding intermediate), and a surfactant in which a semi- polar surfactant is dissolved, Quot; means cationic, anionic, or bipolar.

Suitable examples of the semi-polar surfactant include amine alkylene oxide surfactants and amine oxide surfactants. Among them, an amine oxide type surfactant is preferred because of its good washing power against oil contamination, foaming weather, and good pilling properties.

Examples of the amine oxide type surfactant include alkylamine oxides and alkylamide propyldimethylamine oxides, and among them, the compounds represented by the following general formula (b1) are suitable.

[Chemical Formula 5]

[Wherein, R ² is an alkyl group or alkenyl group of a straight chain or branched chain of carbon atoms from 8 to 18, R ^3, R ⁴ is independently an alkyl group or hydroxyalkyl group having 1-3 carbon atoms, respectively, R ⁵ is C 1 -C Lt; / RTI &gt; B is -CONH-, -NHCO-, -COO-, -OCO- or -O-. r is 0 or 1;

In the formula (b1), R ² represents a linear or branched alkyl group having 8 to 18 carbon atoms or a linear or branched alkenyl group having 8 to 18 carbon atoms and is a linear or branched Is preferred.

In the alkyl group and alkenyl group of R ² , the number of carbon atoms is 8 to 18, and the effect of imparting the feeling of pilling to oil contamination, , It is preferably 10 to 14.

R ³ and R ⁴ each independently represent an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group having 1 to 3 carbon atoms, preferably an alkyl group having 1 to 3 carbon atoms, more preferably a methyl group, and R ³ and R ⁴ Is more preferably a methyl group.

R ⁵ is an alkylene group having 1 to 4 carbon atoms.

B is -CONH-, -NHCO-, -COO-, -OCO- or -O-. r is 0 or 1, and 0 is preferable.

Specific examples of the amine oxide surfactants include alkyldimethylamine oxide-based surfactants such as lauryldimethylamine oxide, palmalkyldimethylamine oxide and lauryldiethylamine oxide; And alkanolamidoalkyldimethylamine oxides such as lauric acid amide propylamine oxide. Among them, alkyldimethylamine oxide-based ones are particularly preferable because they have a particularly good effect of imparting lipid, rinsing property, cleaning ability against oil contamination, and real feeling of washing at the time of cleaning tableware or the like to which pollution with a large amount of oil is applied More preferable.

The component (b) may be used singly or in combination of two or more.

Among them, the component (b) is preferably used in combination with the component (a), or in combination with the component (a) and the component (d) The rinsing ability, the cleaning power against oil contamination, and the effect of imparting the sense of realism at the end of washing are particularly good. Therefore, it is preferable to use one of amino betaine, sulfobetaine, alkyldimethylamine oxide type or alkanoylamide alkyldimethylamine oxide Based, and alkyldimethylamine oxide-based ones are particularly preferable.

The blending amount of the component (b) in the liquid detergent is preferably 2% by mass or more, more preferably 3% by mass or more, and further preferably 5% by mass or more, as the lower limit with respect to the total mass of the liquid detergent. The upper limit value is preferably 20 mass% or less, and more preferably 15 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. The blending amount of the component (b) in the liquid detergent is preferably 2 to 20 mass%, more preferably 3 to 15 mass%, and more preferably 5 to 15 mass%, relative to the total mass of the liquid detergent, More preferably, it is in mass%.

When the blending amount of the component (b) is within the above range, the washing power is increased, and the bubbles become more easily visible. If the blending amount of the component (b) is lower than the lower limit, the washing power against the oil contamination increases, and the ripping performance and the rinsing property when cleaning the tableware or the like with contamination with a large amount of oil become better ). On the other hand, when the upper limit is exceeded, the viscosity of the liquid detergent is excessively increased, so that the foaming becomes less likely to occur (the pilling property is lowered), and the rinsability is lowered.

In the present invention, the "mass ratio represented by the component (a) / component (b)" refers to the ratio (mass ratio) of the content of the component (a) to the content of the component (b) in the liquid detergent.

In the liquid detergent of the present invention, the mixing ratio of the component (a) and the component (b) is preferably 0.5 or more and 1.5 or more as the lower limit of the mass ratio represented by the component (a) / component (b). The upper limit value is preferably 6 or less and preferably 5 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, the mass ratio represented by the component (a) / (b) is more preferably 0.5 to 6, and more preferably 1.5 to 5.

When the mass ratio is not less than the lower limit value, it is possible to obtain a sensation of the end of cleaning during cleaning. In addition, the bubbles become easy to spread, and the amount of bubbles and the persistence of the bubbles are further improved. In addition, both the ripness and the rinsing property at the time of cleaning the tableware or the like to which the contaminated oil is attached are improved. On the other hand, if it is less than the upper limit value, the detergency against oil contamination is further improved in addition to the feeling of the end of cleaning during cleaning.

<Solvent: water (water)>

The liquid detergent of the present invention preferably contains water as a solvent from the viewpoints of ease of preparation of the liquid detergent and solubility in water at the time of use.

The blending amount of water in the liquid detergent is preferably 40% by mass or more, more preferably 45% by mass or more, and further preferably 50% by mass or more as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 90 mass% or less, more preferably 85 mass% or less, and even more preferably 80 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, the blending amount of water in the liquid detergent is preferably 40 to 90 mass%, more preferably 45 to 85 mass%, and still more preferably 50 to 80 mass% with respect to the total mass of the liquid detergent.

If the blending amount of water is the lower limit value or more, the liquid stability of the liquid detergent with the elapse of time becomes better, and when the amount is less than the upper limit value, the liquid viscosity is appropriately lowered.

&Lt; Other components >

To the liquid detergent of the present invention, other components other than the above-described components may be arbitrarily blended in accordance with necessity as long as the effect of the present invention is not impaired.

The other components are not particularly limited, and components used in a cleaning agent for hard surfaces or for medical use can be blended, and specifically, the following components are preferable.

(Fatty acid monoethanolamide compound (c))

The liquid detergent of the present invention preferably further contains a fatty acid monoethanolamide compound (c) (hereinafter referred to as "component (c)"). By containing the component (c), the persistence of bubbles at the time of cleaning and the detergency against oil contamination are improved.

Among the components (c), those suitable are those represented by the following general formula (c1).

[Chemical Formula 6]

Wherein R ⁶ represents an alkyl group having 5 to 19 carbon atoms. m represents an average number of repeating oxyethylene groups (-C ₂ H ₄ O-), and is a number of 0 to 9;

In the formula (c1), R ⁶ represents an alkyl group having 5 to 19 carbon atoms, which may be linear or branched.

The alkyl group of R &lt; ⁶ &gt; preferably has 7 to 13 carbon atoms since the number of carbon atoms is 5 to 19 and the detergency against oil contamination and the persistence of foam are improved.

m represents an average number of repeating oxyethylene groups (-C ₂ H ₄ O-), is a number of 0 to 9, preferably 0 to 4, more preferably 0 to 2.

Specific examples of the component (c) include polyoxyethylene (2) lauric acid monoethanolamide (R ⁶ = linear alkyl group having a carbon number of 11 in the formula (c1), m = 2), polyoxyethylene ) Capric acid monoethanolamide (R ⁶ = a linear alkyl group having 9 carbon atoms in the formula (c1), m = 2), and the like. Among them, polyoxyethylene (2) capric acid monoethanolamide is more preferable.

The component (c) may be used singly or in combination of two or more.

In the liquid detergent, the blending amount of the component (c) is preferably 1% by mass or more, more preferably 2% by mass or more, as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 15 mass% or less, and more preferably 10 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. The blending amount of the component (c) in the liquid detergent is more preferably 1 to 15% by mass, and more preferably 2 to 10% by mass with respect to the total mass of the liquid detergent.

If the blending amount of the component (c) is less than the preferable lower limit, it may be difficult to obtain the effect of improving the persistence of the foam. On the other hand, if the content exceeds the upper limit, the foam persistence becomes high, .

In the liquid detergent of the present invention, the mass ratio represented by the component (c) / [component (a) + component (b)] is preferably 0.1 or more, more preferably 0.2 or more. The upper limit value is preferably 0.5 or less, more preferably 0.4 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, the mass ratio of the component (c) / [component (a) + component (b)] is preferably 0.1 to 0.5, more preferably 0.2 to 0.4.

If the mass ratio is lower than the lower limit, the persistence of the foam is further improved. If the mass ratio is lower than the upper limit, the foam becomes more easily diagonal and the foamability, the amount of lip and the rinsing property become better.

In the present invention, the "mass ratio expressed by the component (c) / [component (a) + component (b)]" refers to the ratio of the total content of components (a) and (Mass ratio) of the content of the component.

&Lt; Compound (d) >

In the liquid detergent of the present invention, it is preferable to contain the compound (d) (hereinafter referred to as "component (d)").

The component (d) is represented by the following general formula (d1), and at least one of an oxyethylene group and an oxypropylene group is introduced into the alcohol, and a hydrophobic portion (hydrocarbon group) a compound having the structure branches to the _i H _{2i + 1} C _j H _{2j +1.}

By containing the component (d), it is possible to maintain good pourability even when a large amount of oil contamination adheres to the sponge, and even when the detergent solution adheres directly to dishes and the like, good rinsability can be obtained.

In addition, when the liquid detergent is contained in the sponge, the user feels a sense of resilience. By feeling this sense of urgency, it is possible to reduce the number of times of pouring the liquid detergent into the sponge and to reduce the amount of the liquid detergent to be used when cleaning dishes, cooking utensils, and the like. This is considered to be because when the liquid detergent is contained in a sponge, a creamy foam is formed when the component (a), the component (b) and the component (d) or the components (a) to (d) are combined.

(7)

[In the formula (d1), i and j are each an integer of 1 to 6, and 6? I + j? 12. PO represents an oxypropylene group, and EO represents an oxyethylene group. s is the average number of repeats of PO, t is the average number of repeats of EO, s + t is 6 to 12,

In the formula (d1), i and j are each an integer of 1 to 6, and 6? I + j? 12. Among them, 6 ≦ i + j ≦ 10 is preferable, 6 ≦ i + j ≦ 8 is more preferable, and i + j = 8 is particularly preferable, because the liquidity of the liquid detergent and the persistence of the foam amount are further improved .

When i + j is 6 or more, it exhibits surface activity, increases adsorption to the liquid surface, and maintains both the nature of lip and the persistence of foam amount when washing dishes and the like with contamination with a large amount of oil. In addition, when the liquid detergent is contained in the sponge and held, the feeling of elasticity is felt. When i + j is less than 12, it is excellent in the lip and bubble amount persistency when cleaning dishes and the like with contaminated oil.

C _i H _{2i +1} and C _j H _{2j +1} each represent a linear or branched alkyl group, preferably a straight chain alkyl group, and examples thereof include a methyl group, an ethyl group, a propyl group, a butyl group, A pentyl group, and a hexyl group are suitable.

Among them, C _i H _{2i + 1} and C _j H _{2j + 1} are preferably a combination of an ethyl group and a butyl group, and a combination of a propyl group and a pentyl group (any of the above combinations may be any group) And a combination of a pentyl group (any one of them may be used) is particularly preferable.

In the formula (d1), PO represents an oxypropylene group and EO represents an oxyethylene group.

As the component (d), it is preferable that the component has an oxyethylene group in the molecule, since the speed and foam amount of the liquid detergent in the liquid detergent are further improved and a feeling of elasticity when contained in a sponge is satisfactorily obtained. (Having no oxypropylene group), an oxyethylene group and an oxypropylene group, more preferably having a larger number of oxyethylene groups, particularly preferably having only an oxyethylene group.

When the component (d) has an oxyethylene group and an oxypropylene group, it is excellent in lipidity when cleaning tableware or the like to which dirt with a large amount of oil is adhered, and in a feeling of firmness when the liquid detergent is contained in a sponge , The average repeating number (s) of the oxypropylene group is preferably 3 or less, and more preferably 1 to 2.

When the component (d) has an oxyethylene group and an oxypropylene group, the oxyethylene group and the oxypropylene group may be mixed in a random phase or may be mixed together in a block form.

In the formula (d1), s represents the average number of repeats of PO and t represents the average number of repetitions of EO. s + t is 6 to 12, preferably 9 to 10, more preferably 9 or 10. When s + t is 6 or more, it is excellent in lip and bubble amount persistence when cleaning dishes and the like with contaminated oil. When s + t is 12 or less, the cleaning ability against oil contamination is good. In addition, when the liquid detergent is contained in the sponge and held, the feeling of elasticity is felt. When s + t is 9 or 10, it is more excellent in lip and bubble amount persistency when cleaning tableware and the like with contaminated oil, etc., and moreover, when the liquid detergent is contained in a sponge, do.

Here, s and t represent the &quot; average &quot; repetition number of PO and EO, respectively. Therefore, the compound represented by the formula (d1) is a group of molecules in which the repetition number of PO and EO is different.

The component (d) may be used singly or in combination of two or more.

Among them, as the component (d), it is preferable that s = 0, t = 9 or 10, one of i and j is 3, and the other is 5.

As the component (d), an ethylene oxide adduct of an alcohol having a branching structure on? Obtained by two-molecular condensation by the Gaberbet reaction is particularly suitable.

Specific examples of such a commercially available product include polyoxyethylene mono (2-propylheptyl) ether manufactured by BASF, and specifically, a compound of i + j = 8, s = 0, t = 6 in the formula (d1) Lutensol XP90 "in the formula (d1)," Lutensol XP90 "in the formula (d1), i + j = 8, s = 0, t = 10, and the trade name &quot; Lutensol XP100 &quot;.

Specific examples of the polyoxyethylene polyoxypropylene mono (2-propylheptyl) ether of BASF include compounds (i + j = 8, s + t = Lutensol XL90 "), a compound of i + j = 8 and s + t = 10 in the formula (d1) (a mixture of oxyethylene group and oxypropylene group) Lutensol XL100 &quot;.

The content of the component (d) in the liquid detergent composition is preferably 1% by mass or more, more preferably 3% by mass or more, as a lower limit value. The upper limit is preferably 15 mass% or less, and more preferably 10 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, it is preferably 1 to 15% by mass, more preferably 3 to 10% by mass.

When the content of the component (d) is less than the lower limit value, the ripping property and the rinsing property at the time of cleaning the tableware or the like with contamination with a large amount of oil become better. On the other hand, if it is below the upper limit, the detergency against oil contamination is further improved.

In the liquid detergent of the present invention, the mixing ratio of the component (a), the component (b) and the component (d) is such that the mass ratio represented by the component [component (a) + component (b)] / , More preferably at least 1.5, more preferably at least 2, even more preferably at least 3, particularly preferably at least 4. The upper limit is preferably 15 or less, more preferably 10 or less, and even more preferably 7 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, it is preferably from 1.5 to 15, more preferably from 2 to 15, even more preferably from 3 to 10, and particularly preferably from 4 to 7.

If the mass ratio is not less than the lower limit value, it is easy to obtain the feel of the end of cleaning during cleaning. In addition, the bubbles become easier to see. On the other hand, if the upper limit is below the upper limit, the ripping performance and rinsing property when the tableware or the like to which the contaminated oil is attached are improved.

In the present invention, the "mass ratio expressed by the component (a) + component (b)" / "component (d)" refers to the mass ratio of the component (a) (Ratio by mass) of the total content of the components.

In the liquid detergent of the present invention, the components (a) to (d) are preferably used in combination, and the mass ratio represented by the component / (component (a) + component (b) + component (d) More preferably from 0.05 to 0.6.

If the mass ratio is less than the upper limit, the foaming becomes easier even when cleaning dishes or the like with contaminated oil having a large amount of oil. In addition, the foam amount and the rinsing property become better. On the other hand, if it is the lower limit value or more, persistence of the foam is further improved. In the present invention, the mass ratio of the component (c) / [component (a) + component (b) + component (d)] means that the amount of the component (a), component (b) (Mass ratio) of the content of component (c) to the total content of component (a) and component (b).

(Divalent metal salt (e)),

In the liquid detergent of the present invention, it is also preferable to further contain a divalent metal salt (e) (hereinafter referred to as "component (e)"). By containing the component (e), the cleaning power is mainly increased.

Examples of the component (e) include magnesium salts such as magnesium chloride, magnesium sulfate, magnesium iodide, magnesium nitrate and magnesium bromide; Calcium salts such as calcium chloride, calcium iodide, calcium bifurcate, and calcium nitrate; Zinc salts such as zinc nitrate, zinc sulfide, zinc sulfate, zinc chloride, zinc acetate, zinc ammonium chloride, zinc gluconate, zinc tartrate, zinc perchlorate and zinc oxide.

Among them, a zinc salt is preferable, and zinc sulfate and zinc oxide are particularly preferable because they can provide an antibacterial effect and an antibacterial effect in addition to an effect of improving detergency.

The component (e) may be used singly or in combination of two or more.

In the liquid detergent, the blending amount of the component (e) is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, and further preferably 0.1% by mass or more as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 2% by mass or less, more preferably 1.5% by mass or less, and further preferably 1% by mass or less. The upper limit value and the lower limit value can be arbitrarily combined. In the liquid detergent, the blending amount of the component (e) is preferably 0.01 to 2% by mass, more preferably 0.05 to 1.5% by mass, relative to the total mass of the liquid detergent, Is 0.1 to 1% by mass.

If the amount of the component (e) is less than the preferable lower limit, it is difficult to obtain the effect of improving the cleaning ability. In addition, it is difficult to obtain an antibacterial effect and an antibacterial effect. On the other hand, even if the upper limit is exceeded, further improvement of detergency, improvement of antibacterial effect and antimicrobial effect can not be expected.

In the liquid detergent, the appropriate concentration of the divalent parent component derived from the component (e) is preferably 0.001% by mass or more, more preferably 0.01% by mass or more, as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 0.5 mass% or less, more preferably 0.4 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. In the liquid detergent, the appropriate concentration of the divalent parent component derived from the component (e) is more preferably 0.001 to 0.5% by mass, more preferably 0.01 to 0.4% by mass with respect to the total mass of the liquid detergent .

When the concentration is less than the lower limit of the concentration in the bivalent cage, it is difficult to obtain the effect of improving the detergency, the antibacterial effect, and the antibacterial effect (especially, in the case of zinc). On the other hand, Zinc) can not be expected to be improved.

The concentration of the divalent group derived from the component (e) relative to the total mass of the liquid detergent can be obtained as follows.

For example, when 1% by mass of zinc sulfate heptahydrate (molecular weight 287.61) is contained in the liquid detergent, the content (% by mass) of zinc in the liquid detergent is as follows.

Zinc content in liquid cleaner

 = Amount of zinc sulfate heptahydrate in liquid detergent x (molecular weight of zinc / molecular weight of zinc sulfate heptahydrate)

 = 1 mass% x (65.39 / 287.61)

 = 0.23 mass%

In the liquid detergent of the present invention, the mass ratio represented by component (a) / (bivalent metal) is preferably 150 to 3000, more preferably 200 to 3000.

When the mass ratio is at least the lower limit, the stability at low temperature is further improved. On the other hand, when the mass ratio is lower than the upper limit, the washing power becomes better.

In the present invention, the "mass ratio represented by the component (a) / (bivalent metal)" means the ratio of the content of the component (a) to the content of the divalent parent derived from the component (e) in the liquid detergent .

&Lt; Compound (f) >

In the liquid detergent of the present invention, it is preferable to contain the compound (f) (hereinafter referred to as "component (f)"). The component (f) is an alkyl glyceryl ether represented by the following general formula (f1), and when the component (a) and the component (b) are used in combination, the skin glue .

[Chemical Formula 8]

Wherein R ¹ represents a linear or branched alkyl group having 6 to 14 carbon atoms or a linear or branched alkenyl group having 6 to 14 carbon atoms. n represents an average number of repeats and is a number of 1 to 4]

In the formula (f1), R ¹ is a linear or branched alkyl group having 6 to 14 carbon atoms or a linear or branched alkenyl group having 6 to 14 carbon atoms.

The alkyl group and alkenyl group of R &lt; ¹ &gt; preferably have 6 to 14 carbon atoms, more preferably 6 to 12 carbon atoms, more preferably 6 to 12 carbon atoms since the number of carbon atoms is 6 to 14 and slipping of the skin of hands is liable to be inhibited when washing dishes, More preferably 6 to 10 carbon atoms, and particularly preferably 8 to 10 carbon atoms.

Among them, R ¹ is preferably a straight chain or branched chain alkyl group having 6 to 14 carbon atoms because the slipping of the skin of the hand is further suppressed. Specific examples thereof include n-hexyl group, isohexyl group, Ethylhexyl group, n-nonyl group, n-decyl group, isodecyl group and n-lauryl group, and the 2-ethylhexyl group and isodecyl group are particularly preferable Do.

In the formula (f1), n represents the average number of repeating units of (CH ₂ CH (OH) CH ₂ O), is a number of 1 to 4, preferably a number of 1 to 2, more preferably 1 to be.

The component (f) may be used singly or in combination of two or more.

Of these, 2-ethylhexyl glyceryl ether and isodecyl glyceryl ether are preferable as the component (f), from the viewpoint that the slip of the skin of the hand is more restrained and the lipidability is good, and 2-ethylhexyl Glyceryl ether is most preferred.

In the liquid detergent, the blending amount of the component (f) is preferably 0.1% by mass or more, more preferably 0.3% by mass or more, and further preferably 0.5% by mass or more as the lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 10 mass% or less, more preferably 8 mass% or less, and further preferably 7 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, it is preferably 0.1 to 10 mass%, more preferably 0.3 to 8 mass%, and still more preferably 0.5 to 7 mass%.

When the compounding amount of the component (f) is within the above range, the skin of the hand skin is more inhibited from being slipped when washing utensils and the like, and it is easy to obtain a good pomposable composition. If the blending amount of the component (f) is less than the preferable lower limit value, it tends to be difficult to obtain an effect of suppressing slip of the hand skin. On the other hand, if the blending amount exceeds the upper limit, .

In the present invention, the "mass ratio expressed by the component (a) + the component (b)" / "the component (f)" means the mass ratio of the component (a) (Ratio by mass) of the total content of the components.

The mixing ratio of the component (a), the component (b) and the component (f) is preferably 3 or more as the lower limit of the mass ratio expressed by the component [component (a) + component (b)] / , And more preferably 6 or more. The upper limit is preferably 160 or less, more preferably 125 or less, and even more preferably 10 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, it is preferably from 3 to 160, more preferably from 3 to 125, still more preferably from 3 to 10, and most preferably from 6 to 10.

When the mass ratio is at least the lower limit value, the detergency against oil contamination is further improved. On the other hand, if the upper limit is less than the upper limit, slipping of the skin of the hand is further suppressed when washing dishes and the like.

(Hydrotrope agent (g))

In the liquid detergent of the present invention, it is also preferable to further contain a hydrotrope (g) (hereinafter referred to as "component (g)"). By containing the component (g), the storage stability (in particular, the low temperature stability) of the liquid detergent is improved mainly, and the transparent appearance is more easily secured.

Examples of the component (g) include an aromatic sulfonic acid or a salt thereof, an aromatic carboxylic acid or a salt thereof, an alcohol having 2 to 4 carbon atoms, or other water-soluble solvents.

Examples of the aromatic sulfonic acid include toluenesulfonic acid, cumenesulfonic acid, xylenesulfonic acid, and substituted or unsubstituted naphthalenesulfonic acid. Of these, toluenesulfonic acid and cumenesulfonic acid are preferable.

Toluenesulfonic acid and cumenesulfonic acid may be any of the three isomers of an o-, m- and p-isomer. Among them, p-toluenesulfonic acid is preferable because p-toluenesulfonic acid is preferable because p- desirable.

Examples of the aromatic carboxylic acid include benzoic acid and the like.

Examples of the form of the salt in the aromatic sulfonic acid salt and the aromatic carboxylic acid salt include salts of alkali metals such as sodium and potassium; Salts of alkaline earth metals such as magnesium and calcium; Ammonium salts; And alkanolamine salts such as monoethanolamine, diethanolamine and triethanolamine. Among them, a salt of an alkali metal is preferable, and a sodium salt is more preferable.

Of the alcohols having 2 to 4 carbon atoms, examples of monohydric alcohols include ethanol, 1-propanol, 2-propanol, 1-butanol and the like. Examples of the polyhydric alcohols having 2 to 4 carbon atoms include ethylene glycol, propylene glycol, butylene glycol, and glycerin.

Examples of other water-soluble solvents include polyethylene glycol and phenyl glycol.

The component (g) may be used singly or in a combination of two or more.

(g) is preferably at least one selected from the group consisting of an aromatic sulfonic acid or a salt thereof, an aromatic carboxylic acid or a salt thereof, and an alcohol having 2 to 4 carbon atoms since it is excellent in storage stability even under a low temperature condition Do. Among them, at least two members selected from the group consisting of an aromatic sulfonic acid, an aromatic sulfonic acid salt, an aromatic carboxylic acid, an aromatic carboxylic acid salt and an alcohol having 2 to 4 carbon atoms are preferably used, and toluene sulfonic acid, toluenesulfonic acid salt, It is more preferable to use at least two members selected from the group consisting of sulfonic acid, cumenesulfonic acid salt, benzoic acid, benzoic acid salt and ethanol. Among them, toluenesulfonic acid, toluenesulfonic acid, cumenesulfonic acid, cumenesulfonic acid, benzoic acid and benzoic acid And ethanol are particularly preferably used in combination with at least one kind selected from the group consisting of

In the liquid detergent, the blending amount of the component (g) is preferably 5% by mass or more, more preferably 6% by mass or more, as a lower limit with respect to the total mass of the liquid detergent. The upper limit is preferably 30 mass% or less, more preferably 20 mass% or less, and even more preferably 10 mass% or less. The upper limit value and the lower limit value can be arbitrarily combined. In the liquid detergent, the blending amount of the component (g) is preferably 5 to 30% by mass, more preferably 5 to 20% by mass, relative to the total mass of the liquid detergent, Is 6 to 10% by mass.

If the compounding amount of the component (g) is less than the preferable lower limit value, the compounding effect of the component (g) may not be sufficiently obtained. On the other hand, if it exceeds the upper limit, the washing power may be lowered.

In the liquid detergent of the present invention, the mass ratio represented by component (g) / [component (a) + component (b)] is preferably 0.15 to 0.5.

When the mass ratio is more than the lower limit, the stability at low temperature is further improved, while when it is lower than the upper limit, the washing power and the foam diary become better.

In the liquid detergent composition of the present invention, the mass ratio expressed by the component (g) / [component (a) + component (b) + component (d)] is preferably 0.15 or more as a lower limit value, desirable. The upper limit is preferably 0.5 or less, more preferably 0.4 or less. The upper limit value and the lower limit value can be arbitrarily combined. More specifically, it is preferably 0.15 to 0.5, more preferably 0.2 to 0.4.

Within this range of the mass ratio, the low-temperature stability of the liquid detergent becomes better. In addition, if the mass ratio is lower than the lower limit, the persistence of the foam is further improved, while if the mass ratio is lower than the upper limit, the foam becomes easier to bloom and the foam amount becomes better.

In the present invention, the "mass ratio expressed by the component (g) / [component (a) + component (b) + component (d)]" refers to the mass ratio of component (a), component (b) (Mass ratio) of the content of the component (g) to the total content of the component (a) and the component (b).

The liquid cleansing agent of the present invention may contain, as other components other than the above-mentioned components, a surfactant other than the above-mentioned components (a) and (b), pH adjusting agents such as sodium hydroxide, sulfuric acid and glycolic acid; A chelating agent, an antioxidant, a colorant, an enzyme, a perfume, and the like.

The pH of the liquid detergent of the present invention is preferably 5 to 8 at 25 DEG C, and more preferably 6.5 to 7.5.

If the pH of the liquid detergent is 5 or more, the interaction between the component (a) and the component (b) is not too strong and suitably suppressed, so that both components are dissolved well and the transparent appearance of the liquid detergent is more stable It becomes easier to maintain. Further, gelation or solidification of the liquid detergent will not occur more frequently. On the other hand, if the pH is less than 8, the interaction between the component (a) and the component (b) is not too weak, and the detergency against oil contamination is further improved. Further, the bubble diary of the liquid detergent and the persistence of bubbles (lip and bubble amount) are further improved.

The pH of the liquid detergent (temperature adjustment at 25 캜) was measured using a pH meter (product name: Horiba F-22, manufactured by Horiba Ltd.), a value measured by a method in accordance with JIS K3362-1998 .

One aspect of the liquid detergent of the present invention is a composition comprising a compound (a) of a sulfuric acid ester salt having a branched structure represented by the general formula (a1) and at least one of the ampholytic surfactant and the semi- (The mass ratio of the component (a) / component (b) is 0.5 to 6). According to this liquid detergent, it is possible to realize that the contamination is dropped even when the tableware or the like is covered with the foam during cleaning while maintaining the bubble power. The reason why such an effect can be obtained is presumed as follows although it is not clear.

A compound having a branched structure is often used in suppressing the foaming period (for use as a repellent agent, a low foaming composition, etc.) because it is difficult to form a state of association in general.

However, it is considered that the component (a) is capable of forming a stable association state by mixing with the component (b) at a predetermined mixing ratio. The component (a) having a specific structure branched over? Has a higher dynamic interface tension lowering ability than an ordinary linear or branched anionic surfactant. Therefore, the component (a) has a high diffusion speed in the cleaning liquid, and the component (a) and the component (b) do not stay long between the sponge and the tableware. As a result, if oil contamination or the like is removed during cleaning of a tableware or the like with a sponge containing a liquid detergent, a friction feeling that is "pinched" between the sponge and a tableware is felt. As described above, according to the liquid detergent of the present invention, it is presumed that it is possible to realize that the contamination is lost even if the tableware or the like is covered with foam while maintaining the bubble power.

In addition, the liquid detergent of the present invention has high cleaning power, is easy to foam, and has good rinsing properties. This reason is presumed as follows.

As described above, since the component (a) has a high dynamic surface tension lowering ability, the component (a) is rapidly adsorbed to oil contamination and the like, accompanied by the faster adsorption of the component (b) to the oil contamination, Decomposition (dispersion, dissolution) is accelerated. In addition, since the surfactant molecule film is formed rapidly, it is considered that the foam is easily formed (bubble diary is accelerated). Further, the branched structure of the? -Thio group is prone to become bulky as compared with general branched anionic surfactants. Therefore, it is presumed that the rinse property (no bubble disappearance, no slip) is improved by the difficulty of densely orienting on the vapor-liquid interface and the rinse liquid is easily broken when it is diluted.

Further, according to the liquid detergent of the present invention, it is possible to provide a liquid detergent composition which is excellent in both lyophilicity (amount of foam, speed of foaming), rinsing property (no slip, no foam) Do. The reason why such an effect can be obtained is presumed as follows although it is not clear.

One aspect of the liquid detergent of the present invention is a method for cleaning a liquid detergent composition comprising (a) an anionic surfactant having a specific branched structure and (b) at least one of an amphoteric surfactant and a semipolar surfactant in a predetermined mixing ratio (mass ratio expressed by the component b) of 0.5 to 6), and also contains a nonionic surfactant (d) having a specific branched structure.

The component (a) having a specific structure branched from? has a higher dynamic interface tension lowering ability than an ordinary linear or branched anionic surfactant. Thereby, the component (a) can be quickly aligned to the interface when a new interface is formed. Likewise, the component (d) having a specific structure branching over? Has a characteristic of promptly aligning at the vapor-liquid interface when cleaning. Along with this, the orientation of the component (b) on the gas-liquid interface is also accelerated. The component (b) is blended at a predetermined ratio with the component (a), and the component (a) to the component (d) , And the interaction between an appropriate number of repeating oxyalkylene groups in the component (a) and the component (d) and the hydrophilic portion in the component (b), a stable association state is formed. By these actions, the formation of the surfactant molecular films of the components (a) to (d) is promoted. For this reason, even when cleaning dishes and the like with contaminated oil having a large amount of oil, it is considered that the foaming diary is quick and the foaming of a large amount is quickly formed.

In addition, since the components (a) and (d) all have a branched structure on the? -Position, the hydrophobic groups tend to become bulkier than general branched anionic surfactants. For this reason, it is difficult to densely align the liquid at the vapor-liquid interface, and when the cleaning liquid is diluted, it is easily decomposed. Therefore, it is considered that the rinsing property is good.

In addition, the liquid detergent of the present invention has excellent cleaning performance and is also inhibited from slipping of the hand skin when washing dishes and the like.

One embodiment of the liquid detergent of the present invention contains an anionic surfactant (a) having a specific branched structure, at least one (b) of an amphoteric surfactant and a semipolar surfactant, and a specific alkyl glyceryl ether (f) .

The component (a) having a specific structure branched from? has a higher dynamic interface tension lowering ability than an ordinary linear or branched anionic surfactant. Thereby, the component (a) can be rapidly oriented to the interface when a new interface is formed. Therefore, upon washing, the component (a) rapidly adsorbs oil contamination and the like, accompanied with this, the component (b) adsorbs to the oil contamination more quickly and the decomposition (dispersion and dissolution) of the oil contamination is accelerated. In addition, since the component (a) has a branch structure on the? -Position, the hydrophobic group tends to become bulky as compared with a general branched anionic surfactant. For this reason, it is difficult to densely align the interface and it is liable to be washed away by rinsing.

In the present invention, even when the liquid detergent is poured into the sponge in a large amount and the amount thereof is increased by the synergistic action of the component (a), the component (b) and the component (f) It is considered that these components are quickly washed away from the fingers, so that the slip of the hand skin is suppressed.

The liquid detergent of the present invention is also suitable as a liquid detergent of the concentrated type in which the hand skin may slip due to excess surfactant because the concentration of the surfactant is high when the cleaning agent is further washed while being sponged on the sponge.

Example

Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.

<Preparation of liquid detergent>

Liquid cleaning agents of the respective examples were prepared by the following production methods (in the case of unreacted components, the components were not blended) according to the composition shown in the table.

The unit of the blending amount in the table is &quot; mass% &quot;, and all components represent the net fraction conversion amount. As for the component (e), the amount of the divalent metal salt (e-1 and e-2 is abundant salt) and the amount of bivalent metal conversion in the parentheses at the lower end are shown at the upper part. The divalent metal conversion amount with respect to e-1 and e-2 is a zinc conversion amount, and the divalent metal conversion amount with respect to e-3 is a magnesium conversion amount.

The liquid cleaner of each example was prepared so as to be balanced with water such that the total amount of each component described in the table was 100% by mass. Each component was kept at 50 캜.

[Method of producing liquid detergent]

First, a 200 ml beaker was charged with the component (a) or the component (a '), the component (c) or the component (c'), the component (d) The f) component, the (g) component and the PEG 1000 were added and stirred by a magnetic stirrer. Then, the component (b) was added and stirred.

Subsequently, water was added and stirred so that the total amount (total amount was 100 parts by mass) was 93 parts by mass. Thereafter, the pH was adjusted by adding glycolic acid and sodium hydroxide (0.1 N sodium hydroxide), and the remaining water was added to balance the total amount to 100 parts by mass to prepare liquid cleaning agents of the respective examples.

"Balance" representing the blending amount of water means the balance added so that the total blending amount (% by mass) of the total blending components contained in the liquid detergent becomes 100% by mass.

Represents the amount of sodium hydroxide compounded to adjust the pH (25 DEG C) of the liquid detergent to 7.0 after adding a predetermined amount of glycolic acid.

The pH was measured by adjusting the liquid detergent to 25 캜 and using a glass electrode type pH meter (product name: Horiba F-22, manufactured by Horiba Ltd.). The measurement was carried out in accordance with JIS K3362-1998.

In the table, (a) / (b) means the ratio (mass ratio) of the content of the component (a) to the content of the component (b) in the liquid detergent.

(mass ratio) of the content of the component (c) to the total content of the component (a) and the component (b) in the liquid detergent (c) / .

(a) / (divalent metal) means the ratio (mass ratio) of the content of the component (a) to the content of the divalent parent derived from the component (e) in the liquid detergent.

[(a) + (b)] / (d) means the ratio (mass ratio) of the total content of the components (a) and (b) to the content of the component (d) in the liquid detergent .

(c) / (a) + (b) + (d) of the component (a) (Mass ratio).

(a) + (b)] / (f) means the ratio (mass ratio) of the total content of the components (a) and (b) to the content of the component (f) in the liquid detergent . (g) / [(a) + (b) + (d)] of the component (a) and the total amount of the components (a) (Mass ratio).

The components shown in the table are described below.

(A) Component

a-1: polyoxyethylene mono (2-propylheptyl) ether sulfuric acid ester Na, C _x H _{2x +1} = propyl group in the formula (a1), C _y H _{2y +1} = pentyl group, x + y = 8, p = 0, q = 3, and M = sodium.

[Example of a-1]

290 g of "Lutensol XP30" manufactured by BASF Co., Ltd. was placed in a 500 ml flask equipped with a stirrer, and 81 g of liquid anhydrous sulfuric acid (sulphone plate) was slowly added dropwise while maintaining the reaction temperature at 40 캜. After completion of the dropwise addition, stirring was continued for 1 hour to obtain a desired polyoxyethylene alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a-1.

a-2: polyoxyethylene mono (2-propylheptyl) ether sulfuric acid ester Na, C _x H _{2x +1} = propyl group in the formula (a1), C _y H _{2y +1} = pentyl group, x + y = 8, p = 0, q = 4, M = equivalent to sodium.

[Example of a-2]

Except that 334 g of "Lutensol XP40" manufactured by BASF was used instead of BASF Lutensol XP30.

a-3: Polyoxyethylene polyoxypropylene mono (2-propylheptyl) ether sulfuric acid ester Na, C _x H _{2x +1} = propyl group in the general formula (a1), C _y H _{2y +1} = pentyl group, x + y = 8, p = 1, q = 3, and M = sodium.

[Example of a-3]

Except that 349 g of "Lutensol XL40" manufactured by BASF was used instead of BASF Lutensol XP30.

a-4: Mono (2-propylheptyl) ether sulfuric acid ester Na, C _x H _{2x + 1} = propyl group, C _y H _{2y +1} = pentyl group, x + y = 8, p = 0, q = 0, M = equivalent to sodium.

[Example of a-4]

58 g of 2-propylheptanol obtained in this way was placed in a 500 ml flask equipped with a stirrer, and 81 g of liquid anhydrous sulfuric acid (sulphone plate) was charged at a reaction temperature The mixture was slowly dropped while maintaining the temperature at 40 占 폚. After completion of the dropwise addition, stirring was continued for 1 hour to obtain an objective alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a-4.

(Hereinafter referred to as "component (a ')") of the component (a)

a'-1: polyoxyethylene mono (2-butyloctyl) ether sulfuric acid ester Na, C _x H _{2x +1} = butyl group in the formula (a1), C _y H _{2y +1} = hexyl group, x + y = 10, p = 0, q = 2, M = equivalent to sodium.

[Example of a'-1]

In a 4 liter autoclave, 372 g of trade name "ISOFOL12" (C _x H _{2x +1} = butyl group, C _y H _{2y +1} = hexyl group in the above formula (a1)) 372 g and potassium hydroxide catalyst , The inside of the autoclave was replaced with nitrogen, and the temperature was raised with stirring. Thereafter, while maintaining the temperature at 180 캜 and the pressure of 0.3 mPa, 181 g of ethylene oxide was introduced to obtain a reactant having an average addition number of moles of ethylene oxide of 2. Next, 274 g of the alcohol ethoxylate obtained above was placed in a 500 ml flask equipped with a stirrer, and after nitrogen replacement, 81 g of liquid sulfuric acid anhydride (sulphone plate) was slowly added dropwise while maintaining the reaction temperature at 40 캜. After completion of the dropwise addition, stirring was continued for 1 hour to obtain a desired polyoxyethylene alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a'-1.

a'-2: mono (2-propyl-heptyl) ether sulfuric acid ester Na, the formula (a1) group C _x H _{2x + 1} = profiles at, C _y H _{2y +1} = pentyl group, x + y = 8, p = 0, q = 0, M = equivalent to sodium.

[Example of a'-2]

58 g of 2-propylheptanol thus obtained was placed in a 500 ml flask equipped with a stirrer, and after replacing the nitrogen, 81 g of liquid anhydrous sulfuric acid (sulphate) was added to the reaction system And slowly dropped while maintaining the temperature at 40 占 폚. After completion of the dropwise addition, stirring was continued for 1 hour to obtain an objective alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a'-2.

a'-3: sulfur oxides of an average of 3 moles of ethylene oxide of a branched alcohol having 13 carbon atoms.

[Example of a'-3]

332 g of "Lutensol TO3" manufactured by BASF Co., Ltd. was placed in a 500 ml flask equipped with a stirrer, and 81 g of liquid anhydrous sulfuric acid (sulphone plate) was slowly added dropwise while maintaining the reaction temperature at 40 캜. After completion of the dropwise addition, stirring was continued for 1 hour to obtain a desired polyoxyethylene alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a'-3.

a'-4: sulfur oxides of an average of 3 moles of ethylene oxide of a synthetic alcohol having 12 to 13 carbon atoms.

[Example of a'-4]

In an autoclave of 4 liter, 400 g of trade name "Safol23" manufactured by Sosou Co., Ltd. and 0.8 g of potassium hydroxide catalyst were placed, the inside of the autoclave was replaced with nitrogen, and the temperature was raised with stirring. Thereafter, while maintaining the temperature at 180 캜 and the pressure of 0.3 mPa, 271 g of ethylene oxide was introduced to obtain a reactant having an average addition number of moles of ethylene oxide of 3. Next, 334 g of the alcohol ethoxylate obtained above was placed in a 500 ml flask equipped with a stirrer, and 81 g of liquid anhydrous sulfuric acid (sulphone plate) was slowly added dropwise while maintaining the reaction temperature at 40 캜. After completion of the dropwise addition, stirring was continued for 1 hour to obtain a desired polyoxyethylene alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a'-4.

a'-5: sulfur oxides of an average of 2 moles of an ethylene oxide of a synthetic alcohol having 12 to 13 carbon atoms.

[Example of a'-5]

In an autoclave of 4 liter, 400 g of trade name "Neodor 23" manufactured by Shell Industries Ltd. and 0.8 g of potassium hydroxide catalyst were placed, the inside of the autoclave was replaced with nitrogen, and the temperature was raised with stirring. Thereafter, while maintaining the temperature at 180 캜 and the pressure of 0.3 mPa, 181 g of ethylene oxide was introduced to obtain a reactant having an average addition number of moles of ethylene oxide of 2. Next, 280 g of the alcohol ethoxylate obtained above was placed in a 500 ml flask equipped with a stirrer, and 81 g of liquid anhydrous sulfuric acid (sulphone plate) was slowly added dropwise while maintaining the reaction temperature at 40 캜. After completion of the dropwise addition, stirring was continued for 1 hour to obtain a desired polyoxyethylene alkyl ether sulfuric acid. Further, this was neutralized with an aqueous solution of sodium hydroxide to obtain a'-5.

(B) Component

b-1: AX, C12 alkyldimethylamine oxide (Lion arc irradiation agent, trade name "Aromox DM12D-W").

b-2: HSB, N-lauryl-N, N-dimethyl-N- (2-hydroxy-1-sulfopropyl) ammonium sulfobetaine, abbreviation C12 hydroxysulfobetaine Lt; / RTI &gt; 20HD &quot;).

(C) Component

c1:. C12MEA (2), polyoxyethylene lauric acid monoethanol amide, the formula (c1) R ⁶ = alkyl, m = 2 in the straight-chain having a carbon number of 11 in the abbreviated LME (2).

[c-1]

64.1 g of monoethanolamine (manufactured by Tokyo Kasei Kogyo Co., Ltd.), 10 g of Sodium Mesylate (Nippon Catalyst, trade name "SM-28", manufactured by Lion Corporation, trade name "Pastel M- 7.7 g (1.0 mass% of aliphatic acid methyl ester) was added to the reaction mixture and the by-produced methanol was distilled off under reduced pressure while heating and stirring (40 to 1.3 kPa, 90 ° C, 1 hour). When the reaction pressure reached 1.3 kPa, 240 g of lauric acid monoethanolamide was prepared by aging at a reaction temperature of 90 ° C for 3 hours.

The resulting lauric acid monoethanolamide was placed in an autoclave for 1 liter, 1.0 molar fraction of ethylene oxide was added to lauric acid monoethanolamide, and the addition reaction was carried out at 90 DEG C for 2 hours to obtain C12MEA (2).

c-2:. C10MEA (2 ), polyoxyethylene capric acid monoethanol amide, R ⁶ = straight-chain alkyl group of a carbon number of 9 in the formula (c1), m = 2 abbreviated CME (2).

[Example of c-2]

C10MEA (2) was prepared in the same manner as C12MEA (2) except that methyl caprylate (manufactured by Lion Corporation, trade name "Pastel M-10") was used in place of methyl laurate.

(D) Component

C ₁ H _{2i +1} = propyl group, C _j H _{2j + 1} = ₁ in the above general formula (d1), d-1: polyoxyethylene mono (2-propylheptyl) ether, trade name "Lutensol XP60" Pentyl group, i + j = 8, s = 0, t = 6.

d-2: polyoxyethylene mono (2-propylheptyl) ether, trade name "Lutensol XP90" manufactured by BASF, C _i H _{2i +1} = propyl group in the above formula (d1), C _j H _{2j +1} = Corresponding to the pentyl group, i + j = 8, s = 0, t = 9.

d-3: polyoxyethylene mono (2-propylheptyl) ether, trade name "Lutensol XP100" manufactured by BASF, C _i H _{2i +1} = propyl group, C _j H _{2j +1} = Equivalent to pentyl group, i + j = 8, s = 0, t = 10.

d-4: polyoxyethylene polyoxypropylene mono (2-propylheptyl) ether, trade name "Lutensol XL90" manufactured by BASF, C _i H _{2i +1} = propyl group in the above formula (d1), C _j H _{2j +1} = pentyl group, i + j = 8, s + t = 9 (a mixture of oxyethylene group and oxypropylene group).

d-5: polyoxyethylene polyoxypropylene mono (2-propyl-heptyl) ether, manufactured by BASF, trade name "Lutensol XL100", the formula (d1) C _i H _{2i +1} in = a propyl group, C _j H _{2j +1} = pentyl group, i + j = 8, s + t = 10 (a mixture of oxyethylene group and oxypropylene group).

(Hereinafter referred to as "component (d ')") of the component (d)

d-1: polyoxyethylene mono (2-propylheptyl) ether, trade name "Lutensol XP40" manufactured by BASF, C _i H _{2i +1} = propyl group, C _j H _{2j +1} in the formula (d1) = Pentyl group, i + j = 8, s = 0, t = 4.

d-2: polyoxyethylene mono (2-propylheptyl) ether, trade name "Lutensol XP140" manufactured by BASF, C _i H _{2i +1} = propyl group, C _j H _{2j +1} in the formula (d1) = Pentyl group, i + j = 8, s = 0, t = 14.

(E) Component

e-1: Zinc sulfate heptahydrate, manufactured by Junsei Chemical Co., Ltd., reagent grade (molecular weight of heptahydrate: 289).

e-2: zinc oxide, manufactured by Mitsui Metal Industries, Ltd. (molecular weight 81).

e-3: Magnesium sulfate heptahydrate, Uumai Chemical Industry Co., Ltd., purified magnesium sulfate (molecular weight of heptahydrate 247).

(F) Component

f-1: 2-ethylhexyl monoglyceryl ether, R ¹ = 2-ethylhexyl group in the formula (f1), and n = 1.

f-2: isodecyl monoglyceryl ether, R ¹ = isodecyl group in the formula (f1), and n = 1.

(F) Component (hereinafter referred to as "(f ') component")]

f'-1: isodecyl monoglyceryl ether, R ¹ = isodecyl group in the formula (f1), and n = 6.

(G) Component

g-1: p-toluenesulfonic acid, p-TSH, abbreviation of p-toluenesulfonic acid, manufactured by Kyowa Hakko Chemical Co.,

g-2: Ethanol, manufactured by Junsei Chemical Co., Ltd., reagent grade.

· Other ingredients

PEG1000: polyethylene glycol 1000, trade name &quot; PEG # 1000 &quot; (average molecular weight 1000) manufactured by Lion Corporation.

Glycolic acid: manufactured by DuPont, trade name &quot; Copper Pure 70 &quot;.

NaOH: sodium hydroxide, manufactured by Tsuruomida Corporation.

Water: Tap water.

&Lt; Evaluation of liquid detergent >

Each example of the liquid detergent was evaluated by the following evaluation method, and the results are shown in the table.

[Evaluation of easing of bubble]

38 g of water and 2 g of each liquid cleansing agent were taken in a sponge for cleaning dishes (product name: Scotchbrite, made by Sumitomo Sri M Co., Ltd.) of 11.5 cm long × 7.5 cm wide × 3 cm high (Bubbling state), evaluation was carried out by 10 persons according to the following evaluation criteria (a).

(Evaluation Criteria (a))

3 points: The entire surface of the sponge was covered with bubbles.

2 points: The ratio of the foam covering the surface of the sponge was 80% or more but less than 100% of the surface area of the sponge.

1 point: The ratio of the foam covering the surface of the sponge was 50% or more and less than 80% of the surface area of the sponge.

0 point: The percentage of foam covering the surface of the sponge was less than 50% of the surface area of the sponge.

The average value of the ten persons was calculated, and the easiness of bubbles (velocity of bubble diary) was evaluated according to the following evaluation criterion (b).

(Evaluation Criteria (b))

S: Average of 10 people is 2.8 points or more.

A: Average of 10 persons is 2.6 or more, less than 2.8 points.

B: Average of 10 persons is 2.4 or more, less than 2.6 points.

C: Average of 10 people is less than 2.4 points.

[Evaluation of real feeling of washing end]

38 g of water and 2 g of each liquid cleaning agent were taken in a sponge for cleaning dishes (product name: Sukochiburitto) of 11.5 cm in length × 7.5 cm in width × 3 cm in height and 1 g of olive oil and 5 ml of water (Φ = 23 cm), which was then rinsed with the above-mentioned sponge. The cleaning was carried out in such a manner that a circle was drawn five times on one side of a pot (? = 23 cm), and then a circle was drawn twice on the other side. Finally, And each was rubbed with a sponge. According to the evaluation criterion (c) described below, the actual feel of the end of the cleaning of the pottery dish during cleaning was evaluated.

(Evaluation Criteria (c))

2 points: During the cleaning, the contamination from the pottery dish was reliably felt by the change of the friction between the sponge and the pottery dish.

1 point: During the cleaning, the contamination from the pottery dish was felt by the change of the friction between the sponge and the pottery dish.

0 point: During the cleaning, no change in friction between the sponge and the pottery dish was felt.

In the case of two points and one point of the evaluation criterion (c), the rubbing rubbing was stopped at the point when the friction felt between the sponge and the pottery dish was stopped, and the pottery dish in which the bubbles remained was tap water (flow rate 100 ml / 25 占 폚) for 5 seconds to confirm whether or not the contamination was separated from the pot. As a result, in either case, there is no film due to oil, nor does it feel the glue when touching with the hand due to the oil remaining, and the contamination is separated from the pot.

The evaluation of the actual feeling at the end of the cleaning was performed by 10 persons, and the average point of the ten persons was calculated and displayed in the table.

[Evaluation of rinsing property-1]

38 g of water and 2 g of each liquid cleaning agent were taken in a sponge for cleaning dishes (manufactured by Sumitomo Sri M Co., Ltd., product name: Scotchbrite) having a length of 11.5 cm x 7.5 cm x height 3 cm and the sponge was hand- I rubbed it and bubbled it. Five spoons of ceramics (φ = 23 cm) were rubbed five times to draw a circle on the surface of the pot with a sponge that made foam. Next, while rinsing the pot with the bubble remaining in the tap water (flow rate 100 ml / s, 25 캜), the time until the bubbles disappeared after the bubbles disappeared were measured. This operation was repeated five times, the average value was calculated, and the rinsability was evaluated according to the following evaluation criteria. A or more, the rinseability was good.

(Evaluation standard)

S: Average of 5 times was within 30 seconds.

A: The average value of 5 times was within the range of 31 to 35 seconds.

B: Average value of 5 times was in the range of 36 to 40 seconds.

C: The average of 5 times was 41 seconds or more.

[Evaluation of cleaning power]

1 g of tallow (bovine fat) was applied uniformly over the entire surface of the inner surface of the topperware having the dimensions of 10 cm x 15 cm x 5 cm in height to prepare a stain model.

Subsequently, 38 g of tap water at 25 캜 and 2 g of a liquid detergent were taken into a sponge for cleaning dishes (manufactured by Sumitomo Sri M Co., Ltd., product name: Scotchbrite) having a size of 11.5 cm long × 7.5 cm wide × 3 cm high, Thereafter, the above differential model was cleaned in the same manner as that normally performed at home.

Subsequently, the rinse was thoroughly rinsed with tap water at 25 占 폚, and the tactile sensation at the time of touching the area to which the tongue inside the topware was applied was evaluated.

The evaluation was made according to the following evaluation criteria (S to A). The evaluation was made on the evaluation of the detergency against oil contamination.

(Evaluation standard)

SSS: Even if I touched any part of the toeperware, there was no oil film, and no slip due to oil residue was felt at all, and the frictional force felt strongly when rubbed with my fingers.

SS: Even if I touched any part of the toeperware, there was no oil film, and no glue due to the residual oil was felt at all, and friction was felt when rubbed with my fingers.

S: Even if I touched any part of the toeperware, there was no oil film, and I could not feel the glue due to the residual oil.

A: There is a little bit of glue on the inside edge of the toeper wear, but if you touch the bottom and side of the inner side of the toeper wear, there is no oil film, and the glue due to the residual oil is not felt, .

B: When touching the bottom of the inside of the toeperware, there is no oil film, and no residue due to the residual oil is felt, but there is residual glue on the side or edge of the inside of the toeper wear.

C: I felt slippery throughout the toeperware, and I found that the oil remained clearly.

[Evaluation of persistence of bubbles]

38 g of water and 2 g of each kind of liquid detergent were taken into a sponge for cleaning tableware (11.5 cm x 7.5 cm x 3 cm high, manufactured by Sumitomo Sri M Co., Ltd., trade name: Scotchbrite) and hand rubbed three times. Thereafter, the sponge was brought into contact with a porcelain dish (φ = 23 cm) containing 1 g of olive oil and 5 g of water to fuse the contamination with the sponge.

Then, while holding the sponge firmly on the pottery dish, the pottery dish was rubbed on the surface of the pottery to draw a circle for two weeks. The end point of the bubbles was 5% of the entire surface of the pottery dish, and the number of pottery dishes that had been washed to the end point was obtained and the persistence of the bubbles was evaluated.

In addition, the persistency of the foam was evaluated by the following evaluation criteria.

(Evaluation standard)

S: There were more than 24 pieces of pottery plates.

A: The number of pottery plates was 22 to 23 pieces.

B: The number of pottery plates was 20 to 21.

C: The number of pottery plates was 19 or less.

[Evaluation of posture]

This test method evaluated the ease of foaming when oil - rich contamination co - existed.

38 g of water, 2 g of a liquid detergent and 2 g of olive oil were taken into a sponge for cleaning dishes (11.5 cm x 7.5 cm x 3 cm high, manufactured by Sumitomo Sri M Co., Ltd., trade name: The state after the squeezing (the state where the foam was formed) was evaluated based on the following evaluation criteria. The results of the evaluation were S and A, and it was determined that the properties (foam amount, bubble diary speed) were good.

(Evaluation standard)

S: The entire surface of the sponge is covered with bubbles.

A: The ratio of the foam covering the surface of the sponge was 80% or more but less than 100% of the surface area of the sponge.

B: The ratio of the foam covering the surface of the sponge was 50% or more but less than 80% of the surface area of the sponge.

C: The ratio of the foam covering the surface of the sponge was less than 50% of the surface area of the sponge.

[Evaluation of rinsing property-2]

This test evaluated the ease of rinsing the tableware when the liquid detergent was directly attached to the tableware.

1.0 g of the liquid detergent was placed on a pot (= = 23 cm), and the liquid detergent was lightly kneaded with one finger over the entire surface of the pot. Then, one of the pots was rinsed with tap water (25 DEG C) at a flow rate of 5 L / min. At that time, the required rinsing time was measured with a stopwatch until the glue originating from the liquid detergent disappeared.

This measurement was carried out by 10 persons to obtain an average value of the rinsing time, and the rinsability was evaluated based on the following evaluation criteria.

(Evaluation standard)

S: The rinse time was 3 seconds or more and less than 6 seconds.

A: The rinse time was 6 seconds or more and less than 9 seconds.

B: The rinse time was 9 seconds or more and less than 12 seconds.

C: The rinse time was 12 seconds or more.

[Evaluation of slipperiness of hand skin]

38 g of water and 6 g of each kind of liquid detergent were taken into a sponge for cleaning dishes (11.5 cm x 7.5 cm x 3 cm high, manufactured by Sumitomo 3M Ltd., trade name: Scotchbrite) I rubbed it and bubbled it. Five porcelain dishes (φ = 23 cm) were rubbed five times to draw a circle on the surface of the porcelain dish with the foamed sponge. Thereafter, the hands were rinsed with tap water (flow rate 100 ml / s, 25 캜), and the rinse time until the finger slip was eliminated was measured.

The measurement of the rinse time was carried out by five persons and the average value of the five persons was calculated and the slipperiness of the hand skin was evaluated according to the following evaluation criteria. A, S, and no skin slip on hand skin.

(Evaluation standard)

The rinse time (the average value of 5 persons) until the finger slip was eliminated,

SS: Less than 4 seconds.

S: within the range of 5 to 7 seconds.

A: 8 to 10 seconds.

B: 11 to 20 seconds.

C: It was more than 21 seconds.

[Evaluation of low-temperature stability]

100 ml of the liquid cleaner of each example was filled in a cylindrical glass bottle having a diameter of 50 mm and a height of 100 mm, and the lid was closed and sealed. In this state, the appearance of the liquid detergent after storage for one month in a thermostatic chamber at -5 ° C (low temperature condition) was observed with naked eyes to determine whether or not the "uniformly transparent" state was maintained, When it was recognized, the low temperature stability (appearance) of the liquid detergent was evaluated by calculating the ratio (%) of the amount of the precipitate to the total volume of the cylindrical glass bottle.

[Table 1]

[Table 2]

[Table 3]

[Table 4]

From the results shown in the table, it can be confirmed that the liquid detergents of Examples 1 to 29 to which the present invention is applied are liable to foam, and that the sensation of being washed is high. Therefore, it can be seen that the liquid detergents of Examples 1 to 29 can realize that the contamination is lost even if the tableware or the like is covered with the foam during cleaning while maintaining the bubble power.

In addition, it can be seen that the liquid detergents of Examples 1 to 29 are excellent in rinsing property and excellent in cleaning power.

From the results shown in Table 3, it can be seen that the liquid detergents of Examples 15 to 22, which also contain the component (c), have good bubble persistence.

From the evaluation results of the liquid detergents of Examples 2, 14, and 23 to 29, it can be seen that the detergency is further increased by further containing the component (e).

[Table 5]

[Table 6]

[Table 7]

[Table 8]

From the results shown in the table, it can be seen that the liquid detergents of Examples 30 to 58 to which the present invention is applied are excellent in sensation at the end of washing and excellent in pilling property and in rinsing property even in contamination with a large amount of oil .

[Table 9]

[Table 10]

[Table 11]

From the results shown in the table, it can be seen that the liquid detergents of Examples 59 to 76 to which the present invention is applied have excellent cleaning performance, and the slipping of the hand skin is suppressed when washing dishes and the like.

[Available for Industry]

INDUSTRIAL APPLICABILITY According to the liquid detergent of the present invention, it is extremely useful in industry because it is possible to realize that the contamination is lost even if the tableware or the like is covered with foam during cleaning while maintaining the bubble power.

Claims (6)

A positive resist composition comprising a compound (a) represented by the following general formula (a1) and at least one (b) of an amphoteric surfactant and a semi-
the content of the component (a) is 5% by mass to 40% by mass with respect to the total mass of the liquid detergent,
(b) is 3% by mass to 20% by mass with respect to the total mass of the liquid detergent,
wherein the mass ratio of the component (a) / component (b) is 0.5 to 6.
[Chemical Formula 1]

Wherein x and y are each an integer of 1 to 7, and x + y = 8. PO represents an oxypropylene group, and EO represents an oxyethylene group. p represents the average number of repeats of PO and is 0 to 4, q represents the average number of repeats of EO, 1 to 5, and p + q is 1 to 5. M represents an alkali metal, alkaline earth metal, ammonium or alkanolamine] The method according to claim 1,
A liquid detergent further comprising a fatty acid monoethanolamide compound (c). The method according to claim 1,
A liquid detergent further comprising a compound (d) represented by the following general formula (d1).
(2)

[In the formula (d1), i and j are each an integer of 1 to 6, and 6? I + j? 12. PO represents an oxypropylene group, and EO represents an oxyethylene group. s is the average number of repeats of PO, t is the average number of repeats of EO, s + t is 6 to 12, The method of claim 3,
A liquid detergent characterized by having a mass ratio of 2 to 15 expressed as the component (component (a) + component (b)] / (d) 5. The method according to any one of claims 1 to 4,
A liquid detergent further comprising a compound (f) represented by the following general formula (f1).
(3)

Wherein R ¹ represents a linear or branched alkyl group having 6 to 14 carbon atoms or a linear or branched alkenyl group having 6 to 14 carbon atoms. n represents an average number of repeats and is a number of 1 to 4] 6. The method of claim 5,
wherein the mass ratio of the component [component (a) + component (b)] / (component f) is from 3 to 160.