JP2013256654A - Liquid detergent for textile product - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid detergent for textile products excellent in brightening effect even in chemical textile products.SOLUTION: A liquid detergent for textile products contains a component (A) of a compound represented by general formula (I): R-COO-Y, a component (B) of a nonionic surfactant except the component (A), and a component (C) of a fluorescent brightening agent. In the general formula, Ris 5-21C alkyl; Y is 3-16C alkyl or -(RO)-R; Ris 2-4C alkylene; m is a number of 1 to 5; and Ris 1-22C alkyl, phenyl or benzyl.

Description

  The present invention relates to a liquid detergent for textile products.

In the field of liquid detergents for textile products, there is a demand for product development in consideration of the global environment.
For example, it is required to reduce the amount of use per wash, or to reduce the energy in logistics by reducing the size of the container.
In response to such demands, in the field of liquid detergents, development of compositions (concentrations) in which the surfactant concentration is increased is underway.
In addition, liquid detergents for textile products are required to improve the whiteness of the textile products after washing (whitening effect) in addition to improving the cleaning power.

Conventionally, a liquid detergent composition containing a specific nonionic surfactant, an anionic surfactant, and a specific biphenyl-type fluorescent whitening agent has been proposed as a liquid detergent retroactive to the whitening effect ( For example, Patent Document 1).
In addition, for example, a liquid detergent composition containing specific amounts of a fluorescent brightening agent, a specific polyether-type nonionic surfactant, an anionic surfactant, and a specific chelating agent has been proposed. (For example, patent document 2).

International Publication No. 2010/029749 JP 2008-189754 A

By the way, in recent years, as fiber products (especially clothing), those made of chemical fibers have been increasing. For example, some blouses, shirts, etc. use chemical fibers such as polyester. Chemical brightening products such as polyester are difficult to adsorb fluorescent whitening agents conventionally used for liquid detergents. For this reason, it was difficult to obtain a satisfactory whitening effect even if the chemical fiber product was washed using the liquid detergents of Patent Documents 1 and 2.
Then, this invention aims at the liquid detergent for textiles which is excellent in the whitening effect also with respect to chemical textiles.

  As a result of intensive studies, the present inventors have found that a specific ester compound, a nonionic surfactant, and a fluorescent whitening agent are used in combination to provide a good whitening effect even for chemical fiber products. The present invention has been reached.

That is, the liquid detergent for textiles of the present invention comprises (A) component: a compound represented by the following general formula (I), (B) component: a nonionic surfactant excluding the component (A), (C) Component: It contains fluorescent whitening agent, It is characterized by the above-mentioned.
R ¹ -COO-Y (I)
[In the formula (I), R ¹ is an alkyl group having 5 to 21 carbon atoms, and Y is an alkyl group having 3 to 16 carbon atoms or — (R ² O) _m —R ³ . R ² is an alkylene group having 2 to 4 carbon atoms, m is a number from 1 to 5, and R ³ is an alkyl group having 1 to 22 carbon atoms, a phenyl group, or a benzyl group. ]
Furthermore, it is preferable to contain 1 or more types selected from (D) component: anionic surfactant and an aromatic compound, and as said (B) component, (b1) component: In following General formula (II-1) It is preferable to have both the nonionic surfactant represented and (B) components other than the said (b1) component.
_{^{R 20 -X - [(EO)}} x / (PO) y] -R 21 ··· (II-1)
[In the formula (II-1), R ²⁰ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms. X is O, COO or CONH. R ²¹ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms. x represents the average number of repetitions of EO, and is a number of 2 or more and less than 10. y represents the average number of repetitions of PO and is a number from 0 to 6. EO represents an oxyethylene group, PO represents an oxypropylene group, and EO and PO may be mixed and arranged. ]

  According to the liquid detergent for textiles of the present invention, the whitening effect is excellent even for chemical textiles.

(Liquid detergent for textile products)
The liquid detergent for textile products of the present invention (hereinafter sometimes simply referred to as “liquid detergent”) comprises (A) component: a compound represented by the following general formula (I), and (B) component: (A ) A nonionic surfactant excluding the component, and (C) component: a fluorescent whitening agent.
R ¹ -COO-Y (I)
[In the formula (I), R ¹ is an alkyl group having 5 to 21 carbon atoms, and Y is an alkyl group having 3 to 16 carbon atoms or — (R ² O) _m —R ³ . R ² is an alkylene group having 2 to 4 carbon atoms, m is a number from 1 to 5, and R ³ is an alkyl group having 1 to 22 carbon atoms, a phenyl group, or a benzyl group. ]

Although the viscosity (25 degreeC) of a liquid detergent is not specifically limited, 80 mPa * s or less is preferable. If a viscosity is below the said upper limit, the permeability to the textiles which are to-be-washed objects will increase at the time of application washing.
The viscosity of the liquid detergent is a value (measurement condition: rotor No. 2, rotation speed 30 rpm, viscosity after 10 rotations) measured by a B-type viscometer (manufactured by TOKIMEC).

  4-9 are preferable and, as for pH of a liquid detergent, 6-9 are more preferable. If pH is in the said range, application | coating cleaning power will increase more. pH (25 ° C.) indicates a value measured by a pH meter (HM-30G, manufactured by Toa DKK Corporation) or the like.

<(A) Component: Compound represented by Formula (I)>
The component (A) is a compound represented by the above formula (I), that is, an ester compound. By containing the component (A), the liquid cleaning agent of the present invention promotes the adsorption of the component (C) to a fiber product, particularly a chemical fiber product, and can enhance the whitening effect. The reason why the adsorption of the component (C) to the fiber product is promoted by containing the component (A) is not clear, but the hydrophobic charge of the component (A) causes the component (C) to adhere to the fiber product. It is thought that adsorption is promoted.
In addition, component (A) has high affinity with hydrophobic soils (oil stains, sebum soils, etc.) and has high permeability to soils. The coating cleaning power against can be increased.

(I) In formula, R < ¹ > is a C5-C21 alkyl group, Preferably it is a C5-C13 alkyl group, More preferably, it is a C7-C11 alkyl group. When the number of carbons is within the above range, the foam-suppressing property at the time of filling is enhanced, and the raw material can be easily obtained.
R ¹ may be linear or branched.
(I) wherein, Y is an alkyl group or ^{- _{(R 2 O) m -R 3}} .
When Y is an alkyl group, Y has 3 to 16 carbon atoms, and more preferably 6 to 10 carbon atoms. If the number of carbon atoms is less than the above lower limit, the hydrophobicity is weak and the whitening effect may not be sufficiently enhanced. There is.
When Y is an alkyl group, Y may be a straight chain or a branched chain. Among them, a branched chain is preferable from the viewpoint of further increasing the whitening effect and the coating detergency.
When Y is a branched chain, the number of side chains is preferably 1 to 4, and more preferably 1. If the number of side chains is within the above range, the whitening effect and coating cleaning power can be further enhanced.
Preferable Y includes, for example, isotridecyl group, ethylhexyl group, hexyldecyl group, isobutyl group, isopropyl group, etc. Among them, ethylhexyl group is more preferable from the viewpoint of enhancing whitening effect and improving liquid stability. preferable.
When Y is an alkyl group, the alkyl group of R ¹ has 5 to 21 carbon atoms, preferably 5 to 13 carbon atoms, more preferably 7 to 11 and particularly preferably 7 to 9. When the carbon number of R ¹ is within the above range, the balance between hydrophilicity and hydrophobicity is good, and the whitening effect can be further enhanced while maintaining liquid stability.

When Y is — (R ² O) _m —R ³ , R ² is an alkylene group having 2 to 4 carbon atoms, preferably an alkylene group having 2 to 3 carbon atoms, more preferably 3 carbon atoms. An alkylene group. When the number of carbon atoms is within the above range, the balance between hydrophilicity and hydrophobicity becomes good, and the whitening effect can be further enhanced while maintaining the liquid stability.
m is a number of 1 to 5, 2 to 5 is preferable, and 3 is more preferable. If it is less than the above lower limit, the hydrophobicity becomes strong and the liquid stability may be impaired, and if it exceeds the above upper limit, the hydrophilicity becomes too strong and the whitening effect may be lowered.
R ³ is an alkyl group having 1 to 16 carbon atoms, a phenyl group or a benzyl group, and an alkyl group is particularly preferable. When R < ³ > is an alkyl group, 1-12 are preferable, as for carbon number of R < ³ >, 1-6 are more preferable, and 1 (namely, methyl group) is further more preferable. If it is in the said range, liquid stability will become favorable.
When Y is — (R ² O) _m —R ³ , the alkyl group of R ¹ has 5 to 21 carbon atoms, preferably 5 to 13 carbon atoms, and more preferably 9 carbon atoms. When the carbon number of R ¹ is within the above range, the balance between hydrophilicity and hydrophobicity becomes better, and the whitening effect can be further enhanced while maintaining liquid stability.

The component (A) can be produced by a conventionally known method. For example, the method for producing the component (A) in which Y is an alkyl group includes, for example, a method by transesterification between fats and oils and a monohydric alcohol, a method by transesterification between waste cooking oil and monohydric alcohols, and monovalent fatty acids. Examples thereof include a method of esterifying with an alcohol and a method of transesterification between a fatty acid alkyl ester and a monohydric alcohol. (A) Carbon number of the fatty acid residue which comprises a component cuts a carbon fraction by distilling (A) component, for example, or two types of carbon fraction of the fatty acid alkyl ester which has desired carbon number It can adjust by using the raw material mix | blended above.
Although it does not specifically limit as fats and oils used for the manufacturing method of (A) component, Vegetable oil and animal oil are preferable and vegetable oil is more preferable. Examples of vegetable oils include rapeseed oil, sunflower oil, soybean oil, cottonseed oil, sunflower oil, castor oil, olive oil, corn oil, coconut oil, palm oil, palm kernel oil, and the like. Absent. Among these, palm kernel oil and coconut oil are preferable because of the high content of fatty acids having 6 to 14 carbon atoms. Examples of animal oils include beef tallow, pork tallow, and fish oil, but are not particularly limited thereto.
Moreover, as alcohol used for the manufacturing method of (A) component, although it does not specifically limit, natural alcohol, such as CO-1214 (brand name) or CO-1270 (brand name) by Procter & Gamble, Diadol (trade name, C13, C represents carbon number) manufactured by Mitsubishi Chemical Corporation, Neodol (trade name, mixture of C12 and C13) manufactured by Shell, Safol 23 (trade name) manufactured by Sasol , A mixture of C12 and C13) and the like.

 Examples of such component (A) include 2-ethylhexyl caprylate, isotridecyl myristate, 2-hexyldecyl dodecanoate, propylene glycol methyl ether caprylate, dipropylene glycol methyl ether caprylate, and tripropylene glycol methyl caprylate. Ether, propylene glycol methyl ether caprate, dipropylene glycol methyl ether caprate, tripropylene glycol methyl ether caprate, propylene glycol methyl ether laurate, dipropylene glycol methyl ether laurate, tripropylene glycol methyl ether laurate, caprylic acid Ethylene glycol methyl ether, caprylic acid diethylene glycol methyl ether, caprylic acid triethyl Glycol methyl ether, capric acid ethylene glycol methyl ether, capric acid diethylene glycol methyl ether, capric acid triethylene glycol methyl ether, lauric acid ethylene glycol methyl ether, lauric acid diethylene glycol methyl ether, lauric acid triethylene glycol methyl ether, propylene caprylate Glycol ethyl ether, caprylic acid dipropylene glycol ethyl ether, caprylic acid tripropylene glycol ethyl ether, capric acid propylene glycol ethyl ether, capric acid dipropylene glycol ethyl ether, capric acid tripropylene glycol ethyl ether, lauric acid propylene glycol ethyl ether, Dipropylene laurate Ethyl ether, lauric acid tripropylene glycol ethyl ether, caprylic acid ethylene glycol ethyl ether, caprylic acid diethylene glycol ethyl ether, caprylic acid triethylene glycol ethyl ether, capric acid ethylene glycol ethyl ether, capric acid diethylene glycol ethyl ether, capric acid tri Examples include ethylene glycol ethyl ether, lauric acid ethylene glycol ethyl ether, lauric acid diethylene glycol ethyl ether, and lauric acid triethylene glycol ethyl ether. Among them, 2-ethylhexyl caprylate and tripropylene glycol methyl ether caprate are preferable, and 2-ethylhexyl caprylate is more preferable. By using such a component (A), the whitening effect and coating cleaning power can be further enhanced. These (A) components may be used individually by 1 type, and may be used in combination of 2 or more type.

 0.1-10 mass% is preferable, as for content of (A) component in a liquid detergent, 0.5-8 mass% is more preferable, and 1-6 mass% is further more preferable. If it is less than the said lower limit, adsorption | suction of (C) component to textiles cannot fully be accelerated | stimulated, and when it exceeds the said upper limit, there exists a possibility that liquid stability may fall.

<(B) component: nonionic surfactant except (A) component>
(B) component is a nonionic surfactant except (A) component. (B) component is a main component which exhibits the detergency of a liquid detergent, and has the effect | action which solubilizes (A) component in water. The component (B) is particularly excellent in detergency against hydrophobic dirt, and the coating detergency is further increased by using it together with the component (A).

The component (B) is not particularly limited as long as it excludes the component (A), and examples thereof include the following.
(1) An average of 3 to 30 moles, preferably 3 to 20 moles, more preferably 5 to 20 moles of an alkylene oxide having 2 to 4 carbon atoms is added to an aliphatic alcohol having 6 to 22 carbon atoms, preferably 8 to 18 carbon atoms. Polyoxyalkylene alkyl (or alkenyl) ether. Among these, polyoxyethylene alkyl (or alkenyl) ether and polyoxyethylene polyoxypropylene alkyl (or alkenyl) ether are preferable. Examples of the aliphatic alcohol used here include primary alcohols and secondary alcohols. The alkyl group may be a branched chain. As the aliphatic alcohol, a primary alcohol is preferable.
(2) Polyoxyethylene alkyl (or alkenyl) phenyl ether.
(3) A fatty acid alkyl ester alkoxylate in which an alkylene oxide is added between ester bonds of a long-chain fatty acid alkyl ester.
(4) Polyoxyethylene sorbitan fatty acid ester.
(5) Polyoxyethylene sorbite fatty acid ester.
(6) Polyoxyethylene fatty acid ester.
(7) Polyoxyethylene hydrogenated castor oil.
(8) Glycerin fatty acid ester.
These (B) components may be used individually by 1 type, and may be used in combination of 2 or more type.

  (B) When combining 2 or more types of components, a liquid detergent is a polyoxyalkylene type nonionic surfactant represented by the following general formula (II-1), (b1) component, (b1) Other than component It is preferable to have the component (B) (hereinafter also referred to as the component (b2)). The liquid cleaning agent can further enhance the cleaning power, particularly the coating cleaning power, by having both the component (b1) and the component (b2). This is thought to be due to the fact that the component (b1) increases the permeability of the component (b2) to dirt, although the detergency of the component (b1) is low.

^{_{R 20 -X - [(EO)}} x / (PO) y] -R 21 ··· (II-1)
[In the formula (II-1), R ²⁰ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms. X is O, COO or CONH. R ²¹ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms. x represents the average number of repetitions of EO, and is a number of 2 or more and less than 10. y represents the average number of repetitions of PO and is a number from 0 to 6. EO represents an oxyethylene group, PO represents an oxypropylene group, and EO and PO may be mixed and arranged. ]

(II-1) In the formula, R ²⁰ is preferably a C10-18 alkyl group or alkenyl group from the viewpoint of detergency, and may be linear or branched. Examples of R ²⁰ include alkyl groups or alkenyl groups derived from raw materials such as primary or secondary higher alcohols, higher fatty acids, and higher fatty acid amides.
When R ²¹ is an alkyl group, R ²¹ is preferably an alkyl group having 1 to 3 carbon atoms. When R ²¹ is an alkenyl group, R ²¹ is preferably an alkenyl group having 2 to 3 carbon atoms.

X is preferably O or COO.
When X is O, the component (b1) is an alkyl ether type nonionic surfactant. When X is O, the carbon number of R ²⁰ is preferably 10 to 18 from the viewpoint of detergency. R ²⁰ may have an unsaturated bond. When X is O, R ²¹ is preferably a hydrogen atom.
When X is COO, the component (b1) is a fatty acid ester type nonionic surfactant. When X is COO, the number of carbon atoms of R ²⁰ is preferably 9 to 17 and more preferably 11 to 17 from the viewpoint of increasing the detergency. R ²⁰ may have an unsaturated bond. When X is COO, R ²¹ is preferably an alkyl group having 1 to 3 carbon atoms.

(II-1) In the formula, x is preferably a number of 3 to 8. When x is 10 or more, the penetrating power to dirt is reduced, and it is difficult to further improve the cleaning power, and when it is less than 2, the raw material odor of the component (b1) tends to be deteriorated.
y is preferably a number from 0 to 3, more preferably 0. If y exceeds 6, the liquid stability of the liquid cleaning agent at a high temperature (50 ° C. or higher) tends to decrease.
EO and PO in (EO) _x / (PO) _y may be mixed and arranged, or EO and PO may be added randomly or in a block form.
In the component (b1), the added mole number distribution of EO or PO is not particularly limited, and is likely to vary depending on the reaction method in producing the component (b1). For example, the addition mole number distribution of EO or PO is obtained by using ethylene oxide or propylene oxide as a hydrophobic group raw material (primary or secondary higher alcohol, higher fatty acid) using a general alkali catalyst such as sodium hydroxide or potassium hydroxide. , Higher fatty acid amides, etc.) tend to have a relatively wide distribution. Also, specific alkoxylation such as magnesium oxide to which metal ions such as Al ³⁺ , Ga ³⁺ , In ³⁺ , Tl ³⁺ , Co ³⁺ , Sc ³⁺ , La ³⁺ , Mn ^{2+ and the} like described in Japanese Patent Publication No. 6-15038 are added. When ethylene oxide or propylene oxide is added to the hydrophobic group raw material using a catalyst, the distribution tends to be relatively narrow.

 As the component (b1), for example, 7 mol equivalent of ethylene oxide is added to C13 alcohol obtained by subjecting C12 alkene obtained by trimerizing butene to the oxo method (trade names: Lutensol TO7, BASF) (Product name: Lutensol XP90, manufactured by BASF Corp.); obtained by subjecting pentanol to gerbet reaction to C10 alcohol obtained by subjecting pentanol to garbet reaction 7 mol equivalent of ethylene oxide added to C10 alcohol (trade name: Lutensol XL70, manufactured by BASF); 6 mol equivalent of ethylene oxide to C10 alcohol obtained by subjecting pentanol to garvet reaction (Products added with : Lutensol XA60, manufactured by BASF); 9 mol equivalent of ethylene oxide added to secondary alcohol having 12 to 14 carbon atoms (trade name: Softanol 90, manufactured by Nippon Shokubai Co., Ltd.), 12 to 12 carbon atoms Examples include 14 secondary alcohols added with 3 mol of ethylene oxide (trade name: Softanol 30, manufactured by Nippon Shokubai Co., Ltd.).

  In the liquid detergent, the content of the component (b1) is preferably 1 to 15% by mass, more preferably 3 to 10% by mass, and further preferably 5 to 8% by mass. If it is less than the lower limit, it is difficult to further improve the cleaning power, and if it exceeds the upper limit, the liquid detergent tends to become cloudy at low temperatures (5 ° C. or less).

  In the component (B), the content of the component (b1) is preferably 1 to 30% by mass, and more preferably 5 to 15% by mass. If it is in the said range, the improvement of the permeability by the (b1) component and the cleaning power by the (b2) component can be balanced, and the cleaning power of the liquid cleaning agent can be further enhanced.

 The component (b2) used together with the component (b1) is preferably the polyoxyalkylene alkyl (or alkenyl) ether of (1) described above or the fatty acid alkyl ester alkoxylate of (3) described above. Polyoxyalkylene-type nonionic surfactant represented by formula (II-2) (hereinafter sometimes referred to as component (b2-1)), polyoxyalkylene-type nonion represented by general formula (II-3) below A surfactant (hereinafter sometimes referred to as component (b2-2)) is more preferred. The liquid cleaning agent can further enhance the cleaning power by containing these components (b2).

^{_{R 11 -X 1 - [(EO}} ) s / (PO) t] -R 12 ··· (II-2)
[(II-2) In the formula, R ¹¹ represents an alkyl group or an alkenyl group having 8 to 18 carbon atoms. X ¹ is O, COO or CONH. R ¹² is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms. s represents the average number of repetitions of EO and is a number from 10 to 20. t represents the average number of repetitions of PO and is a number from 0 to 6. EO represents an oxyethylene group, PO represents an oxypropylene group, and EO and PO may be mixed and arranged. ]

(II-2) In the formula, R ¹¹ is preferably an alkyl group or alkenyl group having 10 to 18 carbon atoms from the viewpoint of detergency, and may be linear or branched. Examples of R ¹¹ include alkyl groups or alkenyl groups derived from raw materials such as primary or secondary higher alcohols, higher fatty acids, higher fatty acid amides, and the like.
When R ¹² is an alkyl group, R ¹² is preferably an alkyl group having 1 to 3 carbon atoms. When R ¹² is an alkenyl group, R ¹² is preferably an alkenyl group having 2 to 3 carbon atoms.

X ¹ is preferably O or COO.
When X ¹ is O, the component (b2-1) is an alkyl ether type nonionic surfactant. When X ¹ is O, the carbon number of R ¹¹ is preferably 10 to 18 from the viewpoint of detergency. R ¹¹ may have an unsaturated bond. When X ¹ is O, R ¹² is preferably a hydrogen atom.
When X ¹ is a COO, (b2-1) component is a fatty acid ester type nonionic surfactant. When X ¹ is a COO, from the viewpoint of ^detergency, the carbon number of ^{R 11} is preferably 9 to 17, 11 to 17 is more preferable. R ¹¹ may have an unsaturated bond. When X ¹ is COO, R ¹² is preferably an alkyl group having 1 to 3 carbon atoms.

(II-2) In formula, s becomes like this. Preferably it is a number of 10-18. When s exceeds 20, the HLB value becomes too high and the cleaning power tends to decrease. On the other hand, when s is less than 10, there is a possibility that the improvement of the detergency becomes insufficient.
t is preferably a number from 0 to 3. If t exceeds 6, the liquid stability of the liquid detergent at high temperature tends to be lowered.
EO and PO in (EO) _s / (PO) _t may be mixed and arranged, or EO and PO may be added randomly or may be added in blocks.
In the component (b2-1), the added mole number distribution of EO or PO is the same as the added mole number distribution of EO or PO in the component (b1).

  Examples of the component (b2-1) include Diadol (trade name, C13) manufactured by Mitsubishi Chemical Corporation, Neodol (trade name, a mixture of C12 and C13) manufactured by Shell, and Safol 23 (trade name) manufactured by Sasol. , A mixture of C12 and C13), or the like, with 12 mole equivalent or 15 mole equivalent ethylene oxide added; CO-1214 (trade name) or CO-1270 (trade name) manufactured by Procter & Gamble Name) natural alcohol such as 12 moles or 15 moles of ethylene oxide added; 15 moles of ethylene oxide added to secondary alcohols having 12 to 14 carbon atoms (trade name) : Softanol 150, manufactured by Nippon Shokubai Co., Ltd., palm fatty acid methyl (lauric acid / myristic acid ( Relative to the amount ratio) = 8/2), using the alkoxylation catalysts, obtained by adding ethylene oxide 15 molar equivalent (polyoxyethylene coconut fatty acid methyl ester (EO15 mol)) and the like.

R < ¹³ > -O-[(EO) _p / (PO) _q ]-(EO) _r- H ... (II-3)
[(II-3) In the formula, R ¹³ represents an alkyl or alkenyl group having 8 to 18 carbon atoms. p represents the average number of repetitions of EO, q represents the average number of repetitions of PO, r represents the average number of repetitions of EO, p, q, r are p> 1, r> 1, 0 <q ≦ 3, p + r = 10-20. EO represents an oxyethylene group, PO represents an oxypropylene group, and EO and PO in (EO) _p / (PO) _q may be mixed. ]

(II-3) In the formula, R ¹³ may be linear or branched.
(II-3) In the formula, the ratio of EO and PO is preferably 0.1 to 0.5, more preferably 0.1 to 0.3, in terms of q / (p + r). It is. A cleaning power increases more that it is more than the said lower limit. When it is not more than the above upper limit, an appropriate viscosity is easily obtained, and gelation is easily suppressed.
Only one of EO and PO in (EO) _p / (PO) _q may be present or mixed, and EO and PO may be added randomly. It may be added in the form of a block.

The component (b2-2) can be produced by a conventionally known method. For example, to an alcohol having R ¹³ derived from natural fats and oils, after addition reaction of ethylene oxide and propylene oxide in this order, or after mixed addition (random addition) of ethylene oxide and propylene oxide, ethylene oxide is added again. Can be manufactured.
When the component (b2-2) is used, the liquid detergent can easily have an appropriate viscosity, and gelation is also suppressed. Further, the detergency is further increased and the biodegradability is also improved.

(B2) among the components, from the viewpoint of detergency (b2-1) component is preferable, with respect to secondary alcohol (II-2) formula, ^X carbon atoms ¹ in O 12 to 14, 15 mol obtained by adding the equivalent of ethylene oxide (Softanol 150 (trade name), manufactured by Nippon Shokubai Co., Ltd.), in (II-2) expression, X ¹ is preferably a fatty acid ester type nonionic surfactant of COO, more preferably a fatty acid ester Type nonionic surfactant.
In addition, (b2) component does not need to be combined with (b1) component.

 When the component (b1) and the component (b2) are both present, the mass ratio represented by the component (b1) / the component (b2) (hereinafter sometimes referred to as the b1 / b2 ratio) is 0.01 to 1. 5 is preferable, and 0.08 to 0.4 is more preferable. If the b1 / b2 ratio is within the above range, the balance between the improvement in permeability by the component (b1) and the cleaning power by the component (b2) can be balanced, and the cleaning power of the liquid cleaning agent can be further enhanced.

  10-80 mass% is preferable, as for content of (B) component in a liquid detergent, 20-70 mass% is more preferable, and 35-60 mass% is further more preferable. If it is more than the said lower limit, (A) component can fully be solubilized and sufficient detergency can be exhibited. If it is below the said upper limit, the liquid stability under low temperature can be improved.

  In the liquid detergent, the mass ratio represented by component (A) / component (B) (hereinafter sometimes referred to as A / B ratio) is preferably 0.02 to 0.2, and 0.05 to 0. 0. 1 is more preferable. If it is more than the said lower limit, the whitening effect will increase more, and if it is less than the said lower limit, cleaning power will increase more.

<(C) component: fluorescent whitening agent>
Component (C) is a fluorescent brightener. A liquid detergent exhibits the whitening effect by containing (C) component.
The component (C) may be any component that is conventionally blended in a liquid detergent, for example, 4,4′-bis (2-sulfostyryl) biphenyl represented by the following general formula (III-1) Biphenyl type optical brightener such as disodium salt (for example, Tinopal-CBS-X (trade name, manufactured by Ciba-Geigy Japan)), 4,4 ′ represented by the following general formula (III-2) -Bis ((4-amino-6-morpholino-1,3,5-triazinyl-2) amino) stilbene-2,2'-disulfonate (for example, Tinopal-AMS-GX (trade name, Nippon Ciba-Geigy) Stilbene-type fluorescent brighteners such as, for example, manufactured by Co., Ltd. These (C) components may be used alone or in combination of two or more.

  Although content of (C) component in a liquid cleaning agent is not specifically limited, For example, 0.05-1 mass% is preferable and 0.1-0.5 mass% is more preferable. If it is less than the lower limit, the whitening effect may be insufficient, and if it exceeds the upper limit, the liquid stability may be lowered.

  In the liquid detergent, the mass ratio represented by the component (C) / component (A) (hereinafter sometimes referred to as the C / A ratio) is, for example, preferably 0.005 to 1, and preferably 0.025 to 0.00. 05 is more preferable. Within the above range, the whitening effect can be further enhanced.

<(D) component: one or more selected from anionic surfactants and aromatic compounds>
The liquid detergent of the present invention is selected from (D) component: an anionic surfactant (hereinafter sometimes referred to as (d1) component) and an aromatic compound (hereinafter sometimes referred to as (d2) component). It can contain more than seeds. When the liquid detergent contains the component (D), the fluorescent intensity of the component (C) adsorbed on the fiber product is increased, and the whitening effect can be further enhanced.

The component (d1) is not particularly limited, and examples thereof include linear alkylbenzene sulfonic acid or a salt thereof; α-olefin sulfonate; linear or branched alkyl sulfate ester salt; alkyl ether sulfate ester salt or alkenyl ether sulfate. Examples include ester salts; alkane sulfonates having alkyl groups; α-sulfo fatty acid ester salts and the like. Examples of salts in these anionic surfactants include alkali metal salts such as sodium and potassium, alkaline earth metal salts such as magnesium, and alkanolamine salts such as monoethanolamine and diethanolamine.
As the linear alkylbenzene sulfonic acid or a salt thereof, one having 8 to 16 carbon atoms in the linear alkyl group is preferable, and one having 10 to 14 carbon atoms is particularly preferable.
The α-olefin sulfonate is preferably one having 10 to 20 carbon atoms.
The alkyl sulfate ester salt is preferably an alkyl group having 10 to 20 carbon atoms.
The alkyl ether sulfate ester salt or alkenyl ether sulfate ester salt has a linear or branched alkyl group or alkenyl group having 10 to 20 carbon atoms, and an average of 1 to 10 moles of ethylene oxide added (that is, poly (alkylene)). Oxyethylene alkyl ether sulfates or polyoxyethylene alkenyl ether sulfates) are preferred.
As the alkane sulfonate, those having 10 to 20 carbon atoms in the alkyl group are preferable, and those having 14 to 17 are more preferable. Among these, those in which the alkyl group is a secondary alkyl group (that is, secondary alkane sulfonate) are particularly preferable.
As the α-sulfo fatty acid ester salt, fatty acid residues having 10 to 20 carbon atoms are preferable.
Among these (d1) components, at least one selected from linear alkylbenzene sulfonic acid or a salt thereof, alkane sulfonate, polyoxyethylene alkyl ether sulfate, and α-olefin sulfonate is particularly preferable.

  As the component (d1), other anionic surfactants other than those described above may be used. Examples of the other anionic surfactant include higher fatty acid salts having 10 to 20 carbon atoms, alkyl ether carboxylates, polyoxyalkylene ether carboxylates, alkyl (or alkenyl) amide ether carboxylates, and acylaminocarboxylic acids. Carboxylic acid type anionic surfactants such as acid salts; phosphoric acid ester types such as alkyl phosphoric acid ester salts, polyoxyalkylene alkyl phosphoric acid ester salts, polyoxyalkylene alkyl phenyl phosphoric acid ester salts, glycerin fatty acid ester monophosphoric acid ester salts Anionic surfactants and the like can be mentioned. These components (d1) are easily available on the market.

 Examples of the component (d2) include aromatic alcohols such as phenoxyethanol and phenyldiglycol, benzoic acid, p-toluenesulfonic acid, and the like. Among them, aromatic alcohols are preferable, and phenoxyethanol and phenyldiglycol are more preferable.

  These (D) components may be used individually by 1 type, and 2 or more types may be used in combination.

 0.5-15 mass% is preferable, as for content of (D) component in a liquid detergent, 1-10 mass% is more preferable, and 1-5 mass% is further more preferable. If the amount is less than the lower limit, the whitening effect may not be further improved. If the amount exceeds the upper limit, the liquid stability may be lowered.

<Other optional components>
The liquid detergent is an enzyme, a water-miscible organic solvent other than the component (d2), a cationic surfactant, an amphoteric surfactant, a thinning agent or a solubilizer, an alkaline agent, and the like, as long as the effects of the present invention are not impaired. Optional components such as metal ion scavengers, antioxidants, texture improvers, recontamination inhibitors, pearl agents, soil release agents, enzymes, flavoring agents, coloring agents, emulsifying agents, extracts, pH adjusters, etc. It may contain.

The water-miscible organic solvent is an organic solvent that dissolves 50 g or more in 1 liter of water at 25 ° C. Examples of the water-miscible organic solvent include ethylene glycol, propylene glycol, butylene glycol, hexylene glycol, alkylene glycols having 2 to 6 carbon atoms such as a copolymer of ethylene glycol and propylene glycol; ethanol, methanol, propanol Alcohols such as butanol; diethylene glycol monomethyl ether, diethylene glycol dimethyl ether, triethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, dipropylene glycol monobutyl ether, diethylene glycol mono Butyl ether, diethylene glycol dibu (Poly) alkylene glycol (mono or di) alkyl such as ether, propylene glycol monobutyl ether, diethylene glycol monohexyl ether, diethylene glycol mono-2-ethylhexyl ether, triethylene glycol monobutyl ether, oxyethylene dioxypropylene glycol monobutyl ether Ether; aromatic ethers such as ethylene glycol monophenyl ether, diethylene glycol monophenyl ether, triethylene glycol monophenyl ether, ethylene glycol monobenzyl ether, and diethylene glycol monobenzyl ether. Among them, from the point of improvement of solubility and liquid stability during low temperature storage, ethanol, propylene glycol, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol diethyl ether, dipropylene glycol monomethyl ether, dipropylene glycol monoethyl ether, Dipropylene glycol monobutyl ether, diethylene glycol monobutyl ether, diethylene glycol dibutyl ether, propylene glycol monobutyl ether, diethylene glycol monohexyl ether, diethylene glycol mono-2-ethylhexyl ether, triethylene glycol monobutyl ether, oxyethylene dioxypropylene glycol monobutyl ether More preferable
These water-miscible organic solvents may be used singly or in combination of two or more.
The content of the water-miscible organic solvent in the liquid detergent is preferably 3 to 30% by mass, more preferably 5 to 20% by mass, and even more preferably 7 to 15%. If it exists in the said range, the further improvement of a solubility and liquid stability can be aimed at.

As the cationic surfactant, conventionally known cationic surfactants can be used. For example, (1) dilong chain alkyldishort chain alkyl type quaternary ammonium salt; (2) mono long chain alkyltrishort chain alkyl type Quaternary ammonium salt; (3) Tri long chain alkyl mono short chain alkyl type quaternary ammonium salt and the like.
The “long chain alkyl” in (1) to (3) represents an alkyl group having 10 to 26 carbon atoms. The alkyl group preferably has 12 to 18 carbon atoms.
“Short-chain alkyl” refers to an alkyl group having 1 to 4 carbon atoms which may have a substituent. The alkyl group preferably has 1 or 2 carbon atoms. Examples of the substituent that the alkyl group may have include a phenyl group, a benzyl group, a hydroxyl group, a hydroxyalkyl group, and a polyoxyalkylene group. 2-4 are preferable and, as for carbon number of a hydroxyalkyl group, 2 or 3 is more preferable. 2-4 are preferable and, as for carbon number of the alkylene group in a polyoxyalkylene group, 2 or 3 is more preferable.
Although content of the cationic surfactant in a liquid detergent is not specifically limited, 0.01-30 mass% is preferable and 0.1-20 mass% is more preferable. If it is in the said range, when washing | cleaning clothes, a favorable softness | flexibility will be given to clothes.

As the amphoteric surfactant, conventionally known amphoteric surfactants can be used. For example, alkylbetaine type, alkylamide betaine type, imidazoline type, alkylaminosulfone type, alkylaminocarboxylic acid type, alkylamidecarboxylic acid type Amide amino acid type, phosphate type amphoteric surfactant and the like.
The content of the amphoteric surfactant in the liquid detergent is preferably 0.1 to 15% by mass, for example.

The thinning agent or solubilizer suppresses the formation of a film on the liquid surface due to gelation of the liquid detergent. Examples of the thickener or solubilizer include aromatic sulfonic acids such as toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid, substituted or unsubstituted naphthalenesulfonic acid, and salts thereof. Examples of the aromatic sulfonate include sodium salt, potassium salt, calcium salt, magnesium salt, ammonium salt and alkanolamine salt.
A thinning agent or a solubilizer may be used individually by 1 type, and may be used in combination of 2 or more type.
The content of the thinning agent or solubilizer in the liquid detergent is preferably 0.01 to 15% by mass. If it is in the said range, the film formation in the liquid surface of a liquid detergent can be suppressed favorably.

Examples of the alkali agent include alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine.
An alkali agent may be used individually by 1 type, and 2 or more types may be used in combination.
As for content of the alkaline agent in a liquid detergent, 0.5-5 mass% is preferable.

Examples of the metal ion scavenger include malonic acid, succinic acid, malic acid, diglycolic acid, tartaric acid, citric acid and the like.
A metal ion scavenger may be used individually by 1 type and may be used in combination of 2 or more type.
The content of the metal ion scavenger in the liquid detergent is preferably 0.1 to 20% by mass.

Although it does not specifically limit as antioxidant, A phenolic antioxidant is preferable from the viewpoint of favorable detergency and liquid stability. As the phenolic antioxidant, dibutylhydroxytoluene, butylhydroxyanisole, 2,2′-methylenebis (4-methyl-6-t-butylphenol, dl-α-tocopherol is preferable, dibutylhydroxytoluene, dl-α-tocopherol. Is more preferable.
An antioxidant may be used individually by 1 type and may be used in combination of 2 or more type.
The content of the antioxidant in the liquid detergent is preferably from 0.01 to 2% by mass.

Examples of the texture improving agent include silicones such as dimethyl silicone, polyether-modified silicone, and amino-modified silicone.
The content of the texture improving agent in the liquid detergent is preferably 0 to 5% by mass.

Examples of the dye transfer inhibitor or the recontamination inhibitor include polyvinyl pyrrolidone and carboxymethyl cellulose.
The content of the dye transfer inhibitor or the recontamination inhibitor in the liquid detergent is preferably 0 to 2% by mass.

 Examples of the enzyme include protease, lipase, cellulase and the like.

It does not specifically limit as a fragrance | flavor, For example, the fragrance | flavor composition AD of Tables 11-18 of Unexamined-Japanese-Patent No. 2002-146399 etc. are mentioned.
The content of the flavoring agent in the liquid detergent is preferably 0.1 to 1% by mass.

Colorants include general-purpose dyes and pigments such as Acid Red 138, Polar Red RLS, Acid Yellow 203, Acid Blue 9, Blue No. 1, Blue No. 205, Green No. 3, and Turquoise P-GR (all trade names) Is mentioned.
The content of the colorant in the liquid detergent is preferably 0.00005 to 0.005% by mass.

Examples of the emulsifying agent include polystyrene emulsion and polyvinyl acetate emulsion, and usually an emulsion having a solid content of 30 to 50% by mass is suitably used. Examples of such emulsion-type emulsifying agents include polystyrene emulsion (trade name: Cybinol RPX-196 PE-3, solid content 40% by mass, manufactured by Seiden Chemical Co., Ltd.).
The content of the emulsifying agent in the liquid detergent is preferably 0.01 to 0.5% by mass.

Extracts include, for example, Inuenju, Ouurushi, Echinacea, Koganebana, Yellowfin, Ouren, Allspice, Oregano, Enju, Chamomile, Honeysuckle, Clara, Keigai, Kay, Bay, Juice, Japanese burdock, Comfrey, Ginger, Waremokaku, Peonies , Ginger, goldenrod, elderberry, sage, mistletoe, buckwheat, thyme, flowering dragonfly, clove, mandarin orange, tea tree, barberry, dokudami, nanten, nikko, yorusa, shirogaya, boufu, dutch hail, hop, honshitan, gray Murasakitagayasan, pokeweed, cypress, yamajiso, eucalyptus, lavender, rose, rosemary, balun, cedar, gilead balsamoki Ringworm, kochia, Polygonum aviculare, Jingyou, sealed and Adenophortriphylla, Yamabishi, cayratia japonica, licorice, include plant extracts such as St. John's Wort.
The content of extracts in the liquid detergent is preferably 0 to 0.5% by mass.

Examples of the pH adjuster include acidic compounds such as sulfuric acid and hydrochloric acid; alkanolamines such as monoethanolamine, diethanolamine and triethanolamine; and alkaline compounds such as sodium hydroxide and potassium hydroxide. From the above aspect, sulfuric acid, sodium hydroxide, potassium hydroxide, and alkanolamine are preferable, and sulfuric acid and sodium hydroxide are more preferable. These pH adjusters may be used alone or in combination of two or more.
However, when a liquid detergent having a desired pH can be obtained with only components excluding the pH adjuster, it is not always necessary to use the pH adjuster.

(Method for producing liquid detergent)
As a manufacturing method of the liquid detergent of this invention, what disperse | distributes (A)-(C) component to dispersion media, such as water, is mentioned. For example, the optional component and the component (D) are dispersed in a part of water as a dispersion medium, adjusted to an arbitrary pH, and then the component (A) and the component (B) are dispersed. Thereafter, a separately prepared aqueous dispersion of component (C) is added, and the remainder of the water is added to obtain a liquid detergent.

(How to use liquid detergent)
The method of using the liquid detergent of the present invention (cleaning method) is the same as the method of using a general liquid detergent. For example, a method in which a liquid cleaning agent is put in water together with an object to be cleaned and washed in a washing machine, a method in which a liquid cleaning agent is directly applied to an object to be cleaned, a cleaning agent dissolved in water to form a cleaning liquid, and the cleaning liquid to be cleaned The method of immersing a thing etc. is mentioned. Moreover, after apply | coating a liquid cleaning agent to a to-be-washed object and leaving it to stand suitably, you may wash | clean using a washing machine.
Examples of the textile product to be cleaned include textile products such as clothing, cloths, sheets, and curtains, among which clothing is preferable.

As described above, according to the liquid cleaning agent of the present invention, since it contains the component (B), it has excellent detergency and exhibits the whitening effect because it contains the component (C).
In addition, since it contains the component (A), the whitening effect can be enhanced by promoting the adsorption of the component (C) to the fiber product, and the detergency of the component (B) can be improved by increasing the permeability to the dirt. Can be further enhanced.

  EXAMPLES Hereinafter, although an Example is shown and this invention is demonstrated in detail, this invention is not limited by the following description.

(Raw materials used)
<(A) Component: Compound represented by Formula (I)>
A-1: 2-ethylhexyl caprylate (2H-08), pastel 2H-08 (trade name), manufactured by Lion Corporation.
A-2: 2-ethylhexyl caprate (2H-10), synthesized by the following synthesis method.

<< Synthesis Method of A-2 >>
In a 5 L four-necked flask, 1700 g of capric acid methyl ester (product name; Pastel M10, manufactured by Lion Corporation), 1425 g of 2-ethylhexanol, and 17 g of p-toluenesulfonic acid (manufactured by Kanto Chemical Co., Inc.) were used. Preparation and nitrogen substitution were performed. Thereafter, while flowing nitrogen at a flow rate of 1 mL / second, the liquid temperature was raised to 140 ° C. to carry out an esterification reaction, and water produced by the reaction was removed by distillation. After removing water, the temperature was raised to 200 ° C. while gradually reducing the pressure to 0.6 kPa to obtain a crude product. Next, 21.5 g (1.5 parts by mass with respect to 100 parts by mass of the crude product) of Hyflo Supercell (trade name, manufactured by Nacalai Tesque Co., Ltd.) as a filter aid is added to 1500 g of the crude product and stirred for 10 minutes. And then uniformly dispersed at 80 ° C. to obtain 2-ethylhexyl caprate.

<(A ′) component: Comparative product of component (A)>
A′-1: Liquid paraffin, manufactured by Kanto Chemical Co., Inc.

<(B) component>
B-1: A coconut fatty acid methyl (a mixture of methyl laurate / methyl myristate = 8/2 by mass ratio) added with 15 mol of ethylene oxide using an alkoxylation catalyst [MEE (C12 / 14-15EO), equivalent to component (b2-1). ], Synthetic product. The synthesis was performed as follows.

≪B-1 synthesis method≫
The synthesis was carried out according to the synthesis method described in JP 2000-144179 A (corresponding to sample D).
Alumina-magnesium hydroxide (trade name: Kyoward 330, manufactured by Kyowa Chemical Industry Co., Ltd.) having a composition of 2.5 MgO.Al ₂ O ₃ .nH ₂ O is fired at 600 ° C. for 1 hour in a nitrogen atmosphere. The resulting calcined alumina / magnesium hydroxide (unmodified) catalyst (2.2 g), 0.5 N potassium hydroxide ethanol solution (2.9 mL), lauric acid methyl ester (280 g), and myristic acid methyl ester (70 g) in a 4 L autoclave. First, the catalyst was reformed in an autoclave. Subsequently, after replacing the inside of the autoclave with nitrogen, the temperature was raised, and while maintaining the temperature at 180 ° C. and the pressure at 3 × 10 ⁵ Pa, 1052 g of ethylene oxide was introduced and reacted while stirring. Further, the reaction solution was cooled to 80 ° C., 159 g of water and 5 g of activated clay and diatomaceous earth were added as filter aids, respectively, and the catalyst was filtered off to obtain MEE (C12 / 14-15EO). .

  B-2: Natural alcohol (trade name: CO-1214, manufactured by Procter & Gamble Co.) added with 15 moles of ethylene oxide [LMAO (C12 / 14-15EO)], synthetic product, (b2-1) ) Equivalent to ingredients. The synthesis was performed as follows.

<< Synthesis of B-2 >>
861.2 g of CO-1214 (trade name) and 2.0 g of 30% by mass NaOH aqueous solution were collected in a pressure-resistant reaction vessel, and the inside of the vessel was purged with nitrogen. Next, after dehydrating for 30 minutes at a temperature of 100 ° C. and a pressure of 2.0 kPa or less, the temperature was raised to 160 ° C. Next, while stirring the reaction solution, 760.6 g of ethylene oxide (gaseous) was gradually added to the reaction solution. At this time, it added, adjusting the addition rate so that reaction temperature might not exceed 180 degreeC using the blowing tube. After completion of the addition of ethylene oxide, aging was performed at a temperature of 180 ° C. and a pressure of 0.3 MPa or less for 30 minutes, and then unreacted ethylene oxide was distilled off at a temperature of 180 ° C. and a pressure of 6.0 kPa or less for 10 minutes. Next, after cooling the temperature to 100 ° C. or lower, 70% by mass p-toluenesulfonic acid was added to neutralize so that the pH of the 1% by mass aqueous solution of the reaction product was about 7, and LMAO (C12 / 14 -15EO).

  B-3: Softanol 30 (trade name), secondary alcohol having 12 to 14 carbon atoms added with 3 moles of ethylene oxide, equivalent to component (b1), manufactured by Nippon Shokubai Co., Ltd. In the table, described as AE (C12-3EO).

  B-4: Lutensol XL70 (trade name), 7 mol equivalent of ethylene oxide added to C10 alcohol obtained by subjecting pentanol to garvet reaction, equivalent to component (b1), manufactured by BASF. In the table, described as AE (C10-7EO).

<(C) component>
C-1: Tinopal-CBS-X (trade name, described as CBS in the table), manufactured by Ciba-Geigy Corporation of Japan.
C-2: Tinopal-AMS-GX (trade name, described as AMS in the table), manufactured by Ciba-Geigy Corporation of Japan.

<(D) component>
D-1: Linear alkylbenzene sulfonic acid (LAS-H), Lipon LH-200 (trade name), carbon number 10-14, average molecular weight 322, manufactured by Lion Corporation.
D-2: Phenoxyethanol, manufactured by Nippon Emulsifier Co., Ltd.
D-3: Phenyl diglycol, manufactured by Nippon Emulsifier Co., Ltd.

<Other optional components>
Paratoluenesulfonic acid (PTS): PTS acid (trade name), manufactured by Kyowa Hakko Kirin Co., Ltd.
Butyl carbitol: manufactured by Nippon Emulsifier Co., Ltd.
Polyethylene glycol: PEG1000 (trade name), manufactured by Lion Corporation.
Ethanol: Specific alcohol 95 degree synthesis (trade name), manufactured by Nippon Alcohol Sales Co., Ltd.
Monoethanolamine (MEA): manufactured by Nippon Shokubai Co., Ltd.

(Evaluation method)
<Whitening effect>
500 μL of the liquid detergent of each example was applied to a 5 cm × 5 cm polyester tropical (white, Tanigami Shoten) and left at room temperature (25 ° C.) for 5 minutes to obtain a whitening evaluation cloth. Thereafter, 1 L of water and a whitening evaluation cloth were placed in a Terg-O-meter, and the whitening evaluation cloth was rinsed at 25 ° C. for 2 minutes at 60 rpm. The whitening evaluation cloth after rinsing was taken out and dried. The dried whitening evaluation cloth was irradiated with black light, and 10 panelists evaluated according to the following evaluation criteria. Calculate the average score of 10 panelists, 3 points or more “◎”, 2.5 points or more and less than 3 points “◯”, 2 points or more and less than 2.5 points “△”, 2 points Less than “x” was used. It can be said that the higher the evaluation score is, the higher the whitening effect is (which looks white).

≪Evaluation criteria≫
4 points: It is shining well.
3 points: Shining.
2 points: Slightly shining.
1 point: Not shining.

<Detergency>
A polyester collar cloth was attached to the skin shirt, and five men were worn for three days to attach dirt to the collar cloth, and the collar cloth with the dirt attached was used as a detergency evaluation cloth. In the Terg-O-meter, 333 μL of the liquid cleaning agent of each example, 1 L of water, and a cleaning power evaluation cloth (5 cm × 5 cm) were added and stirred at 25 ° C. for 10 minutes at 120 rpm to wash the cleaning power evaluation cloth. . Next, the washed detergency evaluation cloth and 1 L of water were newly put in a Terg-O-meter and stirred at 25 ° C. for 3 minutes at 120 rpm to rinse the detergency evaluation cloth. After rinsing, the cloth for evaluating the detergency was taken out and dried (washing operation above) to obtain a cloth for evaluation.
Separately, instead of the liquid cleaning agent in each example, 12 mL of a 20% by mass aqueous solution of a standard nonionic surfactant (alcohol ethoxylate added with an average of 15 mol of ethylene oxide per 1 mol of lauryl alcohol) was used as the liquid cleaning agent. In the same manner as the washing operation described above, the detergency evaluation cloth was processed to obtain an evaluation reference cloth.
Ten panelists visually compared the obtained evaluation object cloth and the evaluation reference cloth, and evaluated according to the following evaluation reference. Calculate the average score of 10 panelists, 3 points or more “◎”, 2.5 points or more and less than 3 points “◯”, 2 points or more and less than 2.5 points “△”, 2 points Less than “x” was used.

≪Evaluation criteria≫
4 points: The evaluation target cloth is considerably whiter than the evaluation reference cloth.
3 points: The evaluation target cloth is whiter than the evaluation reference cloth.
2 points: The evaluation target cloth is slightly whiter than the evaluation reference cloth.
1 point: The evaluation object cloth and the evaluation reference cloth have the same whiteness.

(Examples 1-15, Comparative Examples 1-4)
In accordance with the composition of Tables 1 and 2, a 500 mL beaker is charged with optional components, component (D) and a portion of ion-exchanged water, stirred, and adjusted to a pH in the table (sodium hydroxide or hydrochloric acid). ) Was added. The total amount of the pH adjusting agent used for pH adjustment was 0 to 2% by mass. Subsequently, (A) component or (A ') component and (B) component were added and stirred. Separately, a 10% by mass aqueous dispersion of component (C) was prepared, and this was put into a beaker and further stirred. Then, the remainder of ion-exchange water was added so that the whole amount might be 100 mass%, and the liquid cleaning agent of each example was obtained. About the obtained liquid cleaning agent, the whitening effect and the detergency were evaluated, and the results are shown in the table.
In addition, the component whose compounding quantity is not described in the table shall not be blended.

As shown in Tables 1-2, in Examples 1 to 15 to which the present invention was applied, the whitening effect was “Δ” to “◎”, and the cleaning power was “◯” or “◎”. Among these, as the component (B), Examples 5 to 6 having both the B-1 component and the B-3 component or the B-4 component had higher detergency than the Example 1. Moreover, compared with Example 1, the whitening effect was increasing the Examples 13-15 containing (D) component.
On the other hand, Comparative Example 1 containing no component (C), Comparative Example 2 containing component (A ′) instead of component (A), and Comparative Examples 3 to 4 containing no component (A) were all whitened. The effect was “x” and the cleaning power was “Δ”.
From these results, it was found that the whitening effect can be enhanced by applying the present invention.

Claims (3)

(A) component: The compound represented by the following general formula (I), (B) component: nonionic surfactant except the said (A) component, (C) component: fluorescent whitening agent is contained. A liquid detergent for textile products characterized by the above.
R ¹ -COO-Y (I)
[In the formula (I), R ¹ is an alkyl group having 5 to 21 carbon atoms, and Y is an alkyl group having 3 to 16 carbon atoms or — (R ² O) _m —R ³ . R ² is an alkylene group having 2 to 4 carbon atoms, m is a number from 1 to 5, and R ³ is an alkyl group having 1 to 22 carbon atoms, a phenyl group, or a benzyl group. ]  Furthermore, (D) component: One or more types selected from anionic surfactant and an aromatic compound are contained, The liquid cleaning agent for textiles of Claim 1 characterized by the above-mentioned. As the component (B), the component (b1): a nonionic surfactant represented by the following general formula (II-1) and a component (B) other than the component (b1) are included. The liquid cleaning agent for textiles according to claim 1 or 2.
_{^{R 20 -X - [(EO)}} x / (PO) y] -R 21 ··· (II-1)
[In the formula (II-1), R ²⁰ represents an alkyl group or alkenyl group having 8 to 18 carbon atoms. X is O, COO or CONH. R ²¹ is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or an alkenyl group having 2 to 6 carbon atoms. x represents the average number of repetitions of EO, and is a number of 2 or more and less than 10. y represents the average number of repetitions of PO and is a number from 0 to 6. EO represents an oxyethylene group, PO represents an oxypropylene group, and EO and PO may be mixed and arranged. ]