WO2023286794A1

WO2023286794A1 - Liquid detergent

Info

Publication number: WO2023286794A1
Application number: PCT/JP2022/027501
Authority: WO
Inventors: 敦大河内; 亮太武井; 彰悟猿渡; 聡大塚
Original assignee: ライオン株式会社
Priority date: 2021-07-13
Filing date: 2022-07-13
Publication date: 2023-01-19
Also published as: JPWO2023286794A1

Abstract

This liquid detergent contains an (A) component which is a fluorescent brightening agent, a (B) component which is a surfactant, and a (C) component which is at least one substance selected from among water and water-miscible organic solvents. The liquid detergent has a pH or 9 or more at 25ºC. The liquid detergent preferably additionally contains at least one of a (D) component which is an inorganic alkaline agent and an (E) component which is a dispersant.

Description

liquid cleaning agent

The present invention relates to liquid detergents.
This application claims priority based on Japanese Patent Application No. 2021-115742 filed in Japan on July 13, 2021, the contents of which are incorporated herein.

Two types of detergents, ie, powder detergents and liquid detergents, are generally used as detergents for textile products for washing clothes and the like. Demand for liquid detergents is increasing because there is no concern that they will remain undissolved and they can be used by applying them to clothing and the like.
In liquid detergents, as with powder detergents, in addition to imparting detergency with surfactants, fluorescent whitening agents (whiteness improvement effect) are used for the purpose of pursuing whiteness in the appearance of clothes, etc. ) has become common.
For example, Patent Documents 1 and 2 disclose a liquid detergent containing a fluorescent brightener such as a stilbene type and a surfactant.

Japanese Patent Publication No. 2018-501331 JP 2019-173025 A

However, the liquid detergents described in Patent Literatures 1 and 2 do not necessarily provide sufficient detergency against yellowing caused by oxidation of sebum stains accumulated on textile products such as clothes.
An object of the present invention is to provide a liquid detergent having excellent detergency against yellowing of textile products.

The present invention has the following aspects.
[1] (A) component: a fluorescent brightening agent;
(B) component: a surfactant;
(C) component: one or more selected from water and water-miscible organic solvents;
and having a pH of 9 or higher at 25°C.
[2] Component (D): The liquid detergent of [1] above, which further contains an inorganic alkaline agent.
[3] The liquid detergent of [2], wherein at least part of the component (D) is present in a solid state in the liquid detergent.
[4] The liquid detergent of [2] or [3], wherein the component (D) contains one or more selected from the group consisting of sodium carbonate, potassium carbonate, sodium metasilicate and layered sodium silicate.
[5] The content of component (D) is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, and still more preferably 2. to the total mass of the liquid detergent. The liquid detergent according to any one of [2] to [4], which is 5 to 10% by mass.
[6] Component (E): The liquid detergent of any one of [1] to [5], further containing a dispersant.
[7] The component (E) is an alkylene oxide adduct of polyalkyleneimine, polyacrylic acid and its salts, polymaleic acid and its salts, acrylic acid-maleic acid copolymer and its salts, The liquid detergent according to [6] above, containing one or more selected from the group consisting of copolymers of hydrocarbon and maleic acid and salts thereof, acrylic acid-methacrylic acid copolymers and salts thereof.
[8] The component (E) contains an alkylene oxide adduct of the polyalkyleneimine, and the content of the alkylene oxide adduct of the polyalkyleneimine is preferably 0 relative to the total mass of the liquid detergent. 0.01 to 5% by mass, more preferably 0.1 to 4% by mass, still more preferably 1 to 3% by mass, the liquid detergent of [7].
[9] Component (F): The liquid detergent of any one of the above [1] to [8], further containing a structuring agent.
[10] The liquid detergent of [9], wherein the component (F) contains bacterial cellulose.
[11] The content of component (F) is preferably 0.02 to 2% by mass, more preferably 0.04 to 1.5% by mass, relative to the total mass of the liquid detergent. , more preferably 0.05 to 1% by mass, the liquid detergent of [9] or [10].
[12] Component (A) is 4,4′-bis(2-sulfostyryl)biphenyl disodium salt, 4,4′-bis-(4-chloro-3-sulfostyryl)-biphenyl disodium salt, 4,4′-bis((4-amino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2′-disulfonate and 4,4′-bis((4- Any of the above [1] to [11], including one or more selected from the group consisting of toluidino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2'-disulfonates some liquid detergent.
[13] The content of component (A) is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, relative to the total mass of the liquid detergent, and further The liquid detergent according to any one of the above [1] to [12], which is preferably 0.1 to 2% by mass, particularly preferably 0.1 to 1% by mass.
[14] The liquid detergent according to any one of [1] to [13], wherein the component (B) contains a nonionic surfactant and a non-soap anionic surfactant.
[15] The above [14], wherein the nonionic surfactant contains one or more selected from the group consisting of a compound represented by the following general formula (1) and a compound represented by the following general formula (2). liquid detergent.
R ¹¹ —O—[(EO) _s /(A ¹¹ O) _t ]—(EO) _u —R ¹² (1)
(In general formula (1), R ¹¹ is a straight or branched hydrocarbon group having 8 to 22 carbon atoms; R ¹² is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a is an alkenyl group, EO is an oxyethylene group, s is a number representing the average repeating number of EO from 3 to 25, and A ¹¹ O is at least one of PO (oxypropylene group) and BO (oxybutylene group); t is a number from 0 to 6 representing the average number of repetitions of A ¹¹ O. u is a number from 0 to 20 representing the average number of repetitions of EO.)
R ¹³ —X—[(EO) _p /(A ¹² O) _q ]—(EO) _r —R ¹⁴ (2)
(In general formula (2), R ¹³ is a hydrocarbon group having 7 to 21 carbon atoms; —X— is —COO— or —CONH—; R ¹⁴ is a hydrogen atom; an alkyl group or an alkenyl group having 2 to 6 carbon atoms; EO is an oxyethylene group; p is a number from 3 to 25 indicating the average number of repetitions of EO; A ¹² is PO (oxypropylene group) and BO ( oxybutylene group), q is a number from 0 to 6 representing the average number of repetitions of A ¹² O, and r is a number from 0 to 20 representing the average number of repetitions of EO.)
[16] The content of the nonionic surfactant is preferably 5 to 60% by mass, more preferably 10 to 50% by mass, and still more preferably 15 to 60% by mass, relative to the total mass of the liquid detergent. The liquid detergent of [14] or [15], which is 45% by mass, particularly preferably 20 to 40% by mass.
[17] The non-soap anionic surfactant is linear alkylbenzene sulfonic acid or its salt, α-olefin sulfonic acid or its salt, linear or branched alkyl sulfate ester or its salt, polyoxyalkylene alkyl The liquid detergent according to any one of [14] to [16] above, which contains one or more selected from the group consisting of (alkenyl) ether sulfate esters or salts thereof, and internal olefin sulfonic acids or salts thereof.
[18] The liquid detergent according to [17], wherein the non-soap anionic surfactant comprises a linear alkylbenzenesulfonic acid or a salt thereof and a polyoxyalkylenealkyl (alkenyl) ether sulfate ester or a salt thereof.
[19] The liquid detergent according to [17] or [18], wherein the polyoxyalkylene alkyl (alkenyl) ether sulfate ester or salt thereof is a compound represented by the following general formula (3).
R ¹⁵ —O—[(EO) _m /(PO) _n ]—SO ₃ Ma (3)
(In general formula (3), R ¹⁵ is a linear or branched alkyl group having 8 to 20 carbon atoms or a linear or branched alkenyl group having 8 to 20 carbon atoms. EO is is an oxyethylene group, PO is an oxypropylene group, m is a number of 0.1 or more representing the average number of repetitions of EO, and n is a number of 0 to 6 representing the average number of repetitions of PO.[ (EO) _m /(PO) _n ] indicates that there is no limitation on the arrangement order of EO and PO, and Ma is a counterion.)
[20] The content of the non-soap anionic surfactant is preferably 5 to 40% by mass, more preferably 10 to 40% by mass, and still more preferably, based on the total mass of the liquid detergent. is 10 to 30% by mass, particularly preferably 15 to 30% by mass.
[21] The mass ratio of the nonionic surfactant to the non-soap anionic surfactant is preferably from 0.1 to 3, more preferably from 0.15 to 2, and even more preferably from 0.15 to 2. 2 to 1.5, particularly preferably 0.25 to 1.3, the liquid detergent according to any one of the above [14] to [20].
[22] The liquid detergent according to any one of [1] to [21], wherein the component (C) contains water and a water-miscible organic solvent.
[23] The water-miscible organic solvent is preferably ethanol, glycerin, 3-methoxy-3-methyl-1-butanol, propylene glycol, polyethylene glycol having a molecular weight of about 200 to 1000, and diethylene glycol monobutyl ether (butyl carbitol). The liquid detergent according to any one of [1] to [22] above, which contains one or more selected from the group consisting of, more preferably one or more selected from the group consisting of ethanol, glycerin, and propylene glycol.
[24] The mass ratio of water to the mass of the water-miscible organic solvent is preferably 0.2 to 3, more preferably 0.8 to 2.5, still more preferably 1 to 2. The liquid detergent according to any one of [1] to [23].
[25] The liquid detergent according to any one of [1] to [24], further containing an antibacterial agent.
[26] The liquid detergent of [25] above, wherein the antibacterial agent is an antibacterial agent having a diphenyl structure.
[27] The liquid detergent of [26], wherein the antibacterial agent having a diphenyl structure contains at least one of diclosan and triclosan.
[28] The mass ratio of the component (A) to the mass of the antibacterial agent having a diphenyl structure is preferably 0.1 to 60, more preferably 0.25 to 60, still more preferably 1 to 30. , particularly preferably 1 to 10, most preferably 2 to 10, the liquid detergent of [26] or [27].
[29] The liquid detergent of any one of the above [1] to [28], which has a pH at 25°C of preferably 9 to 12, more preferably 9 to 11, even more preferably 9 to 10. .
[30] The liquid detergent according to any one of [1] to [29], which is for textile products.
[31] The liquid detergent according to any one of [1] to [30], which is for a washing machine equipped with an automatic detergent dispenser.
[32] The liquid detergent according to any one of [1] to [30], which is for automatic dispensers.

According to the present invention, it is possible to provide a liquid detergent that has excellent detergency against yellowing of textile products.

The present invention will be described in detail below.
The liquid detergent of the present invention is a composition containing the following components (A), (B) and (C). The liquid detergent preferably further contains one or more of the following components (D), (E) and (F). The liquid detergent may contain components (optional components) other than (A) component, (B) component, (C) component, (D) component, (E) component, (F) component and water.
In the present specification, a numerical range represented by "-" means a numerical range including numerical values before and after "-" as lower and upper limits.
Regarding the numerical ranges of the contents, various physical property values, and property values disclosed in this specification, new numerical ranges can be obtained by arbitrarily combining the lower and upper limits thereof.

<(A) Component>
Component (A) is a fluorescent brightening agent.
If the liquid detergent contains the (A) component, the (A) component adheres to the yellowing of the textile product that could not be removed by the cleaning component, thereby making the textile product look white. As a result, the yellowing of the textile product can be made difficult to see. That is, the detergency against yellowing of textile products can be improved.

Examples of component (A) include stilbene, pyrazoline, coumarin, carboxylic acid, methinecyanine, dibenzothiophene-5-dioxide, azole, and derivatives of five- and six-membered heterocyclic compounds. Particularly suitable examples include 4,4'-bis(2-sulfostyryl)biphenyl disodium salt, 4,4'-bis-(4-chloro-3-sulfostyryl)-biphenyl disodium salt, and the like. 4,4′-bis((4-amino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2′-disulfonate, 4,4 '-Bis((4-toluidino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2'-disulfonate and other stilbene type fluorescent brighteners.
(A) Component may be used individually by 1 type, and may be used in combination of 2 or more types.

Commercially available products can be used as fluorescent brighteners, for example, Sumitomo Chemical Co., Ltd. under the trade names of "Whitex SA" and "Whitex SKC"; BASF under the trade name of "Tinopal (registered trademark) AMS-GX". , "Tinopal (registered trademark) DBS-X", "Tinopal (registered trademark) CBS-X", "Tinopal (registered trademark) CBS-CL"; trade name "Lemonite CBUS-3B" manufactured by Khyati Chemicals; manufactured by ARCHROMA product name "Leucophor (registered trademark) DMA-X Conc". Among these, Tinopal (registered trademark) CBS-X, Tinopal (registered trademark) CBS-CL, Tinopal (registered trademark) AMS-GX and Leucophor (registered trademark) DMA-X Conc are preferred.

The content of component (A) is preferably 0.05 to 5% by mass, more preferably 0.1 to 3% by mass, even more preferably 0.1 to 2% by mass, relative to the total mass of the liquid detergent. 0.1 to 1% by weight is particularly preferred. If the content of the component (A) is at least the above lower limit, the yellowing of the textile product can be made less visible. If the content of component (A) is at most the above upper limit, good liquid appearance can be maintained.

<(B) Component>
(B) Component is a surfactant.
If the liquid detergent contains the (B) component, the detergency will increase.
Component (B) is not particularly limited as long as it is a surfactant used in conventional liquid detergents. Examples include nonionic surfactants, non-soap anionic surfactants, cationic surfactants, amphoteric surfactants, Semipolar surfactants and the like are included.
As component (B), one surfactant may be used, or two or more surfactants may be used in combination.
From the viewpoint of enhancing detergency, the component (B) preferably contains a nonionic surfactant and a non-soap anionic surfactant.
As component (B), a nonionic surfactant, a non-soap anionic surfactant, and one or more of a cationic surfactant, an amphoteric surfactant and a semipolar surfactant may be used in combination.

Examples of nonionic surfactants include polyoxyalkylene type nonionic surfactants, alkylphenols, alkylene oxide adducts such as fatty acids having 8 to 22 carbon atoms or amines having 8 to 22 carbon atoms, polyoxyethylene polyoxypropylene block copolymers, Fatty acid alkanolamides, polyhydric alcohol fatty acid esters or their alkylene oxide adducts, hydrogenated castor oil alkylene oxide adducts, sugar fatty acid esters, N-alkyl polyhydroxy fatty acid amides, alkyl glycosides and the like.
A nonionic surfactant may be used individually by 1 type, and may be used in combination of 2 or more types.
As the nonionic surfactant, a polyoxyalkylene type nonionic surfactant is preferable, and among them, in particular, a compound represented by the following general formula (1) (hereinafter also referred to as "compound (1)"), the following general formula A compound represented by (2) (hereinafter also referred to as “compound (2)”) is more preferred, and compound (1) is even more preferred.

R ¹¹ —O—[(EO) _s /(A ¹¹ O) _t ]—(EO) _u —R ¹² (1)
(In general formula (1), R ¹¹ is a straight or branched hydrocarbon group having 8 to 22 carbon atoms; R ¹² is a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, or a is an alkenyl group, EO is an oxyethylene group, s is a number representing the average repeating number of EO from 3 to 25, and A ¹¹ O is at least one of PO (oxypropylene group) and BO (oxybutylene group); t is a number from 0 to 6 representing the average number of repetitions of A ¹¹ O. u is a number from 0 to 20 representing the average number of repetitions of EO.)

The number of carbon atoms in the hydrocarbon group of R ¹¹ is 8-22, preferably 10-18, more preferably 12-18.
R ¹² is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably a hydrogen atom.
When u is 0, s is preferably 4-20, more preferably 5-16, even more preferably 6-10. t is preferably 0 to 4, more preferably 0 to 2, even more preferably 0.
When u is 1 or more, s is preferably 4-16, more preferably 6-12, even more preferably 8-10. t is preferably 1 to 4, more preferably 2 to 3. u is preferably 4 to 16, more preferably 6 to 12, even more preferably 8 to 10.
When t is 1 or more, in [(EO) _s /(A ¹¹ O) _t ], there is no particular limitation on the distribution (order of arrangement) of EO and PO, EO and BO, or EO, PO and BO. may be arranged in blocks or may be arranged randomly.

R ¹³ —X—[(EO) _p /(A ¹² O) _q ]—(EO) _r —R ¹⁴ (2)
(In general formula (2), R ¹³ is a hydrocarbon group having 7 to 21 carbon atoms; —X— is —COO— or —CONH—; R ¹⁴ is a hydrogen atom; an alkyl group or an alkenyl group having 2 to 6 carbon atoms; EO is an oxyethylene group; p is a number of 3 to 25 indicating the average number of repetitions of EO; A ¹² is PO (oxypropylene group) and BO ( oxybutylene group), q is a number from 0 to 6 representing the average number of repetitions of A ¹² O, and r is a number from 0 to 20 representing the average number of repetitions of EO.)

The number of carbon atoms in the hydrocarbon group of R ¹³ is 7-21, preferably 9-19, more preferably 11-17.
-X- is preferably -COO-.
R ¹⁴ is preferably a hydrogen atom or an alkyl group having 1 to 3 carbon atoms, more preferably an alkyl group having 1 to 2 carbon atoms.
When r is 0, p is preferably 6-22, more preferably 9-20, even more preferably 12-18. q is preferably 0 to 4, more preferably 0 to 2, even more preferably 0.
When r is 1 or more, p is preferably 4-16, more preferably 6-12, even more preferably 8-10. q is preferably 1 to 4, more preferably 2 to 3. r is preferably 4 to 16, more preferably 6 to 12, even more preferably 8 to 10.
When q is 1 or more, there is no particular limitation on the distribution (order of arrangement) of EO and PO, EO and BO, or EO, PO and BO in [(EO) _p /(A ¹² O) _q ]. may be arranged in blocks or may be arranged randomly.

The content of the nonionic surfactant is preferably 5 to 60% by mass, more preferably 10 to 50% by mass, still more preferably 15 to 45% by mass, and 20 to 40% by mass with respect to the total mass of the liquid detergent. Especially preferred. If the content of the nonionic surfactant is at least the above lower limit, the detergency will be enhanced. If the content of the nonionic surfactant is equal to or less than the above upper limit, liquid stability at low temperatures is improved.
The term "liquid stability" as used herein refers to the property that solidification, precipitation, and separation of components are unlikely to occur when the liquid detergent is stored.

Examples of non-soap anionic surfactants include linear alkylbenzene sulfonic acid or its salt (LAS), α-olefin sulfonic acid or its salt (AOS), linear or branched alkyl sulfate ester or its salt ( AS), polyoxyalkylene alkyl (alkenyl) ether sulfate or its salt (AES), alkanesulfonic acid having an alkyl group or its salt, α-sulfo fatty acid ester or its salt, internal olefin sulfonic acid or its salt (IOS) , alkyl ether carboxylic acid or its salt, polyoxyalkylene ether carboxylic acid or its salt, alkylamide ether carboxylic acid or its salt, alkenylamide ether carboxylic acid or its salt, acylaminocarboxylic acid or its salt, carboxylic acid type anion Surfactants; phosphoric acid ester types such as alkyl phosphates or salts thereof, polyoxyalkylene alkyl phosphates or salts thereof, polyoxyalkylene alkylphenyl phosphates or salts thereof, glycerin fatty acid ester monophosphates or salts thereof Examples include anionic surfactants.
Salt forms of non-soap anionic surfactants include, for example, alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). ) and the like.
The non-soap anionic surfactants may be used singly or in combination of two or more.
As the non-soap anionic surfactant, LAS, AOS, AS, AES, and IOS are preferable, and LAS, AES, and IOS are more preferable from the viewpoint of further increasing detergency. Preferably, the liquid detergent contains at least AES, more preferably both LAS and AES.

A polyoxyalkylene alkyl (alkenyl) ether sulfate or a salt thereof (AES) is represented by the following general formula (3).
R ¹⁵ —O—[(EO) _m /(PO) _n ]—SO ₃ Ma (3)
(In general formula (3), R ¹⁵ is a linear or branched alkyl group having 8 to 20 carbon atoms or a linear or branched alkenyl group having 8 to 20 carbon atoms. EO is is an oxyethylene group, PO is an oxypropylene group, m is a number of 0.1 or more representing the average number of repetitions of EO, and n is a number of 0 to 6 representing the average number of repetitions of PO.[ (EO) _m /(PO) _n ] indicates that there is no limitation on the arrangement order of EO and PO, and Ma is a counterion.)
Examples of Ma in formula (3) include sodium ion, potassium ion, magnesium ion, and ammonium ion. When Ma is a counterion with a valence of 2 or higher, Ma is bound to -SO ₃ by multiplying the valence by 1. For example, when Ma is a magnesium ion, the number of Ma is 1/2.

The internal olefin sulfonic acid or its salt (IOS) is represented by the following general formula (5) and the alkene sulfonic acid represented by the following general formula (4) (hereinafter also referred to as "compound (4)"): It is a mixture with hydroxyalkanesulfonic acid (hereinafter also referred to as "compound (5)"). An internal olefin represents an olefin in which a double bond exists inside from the 2-position.

R ¹⁶ —CH═CH(CH ₂ ) _x CH(SO ₃ Mb)—R ¹⁷ (4)
(In formula (4), R ¹⁶ is an alkyl group, R ¹⁷ is an alkyl group having 1 to 5 carbon atoms, the total number of carbon atoms is 8 to 24, x is a number of 0 to 4, Mb represents a counterion.)

The number of carbon atoms in compound (4) is 8 to 24, preferably 10 to 20, more preferably 12 to 18, and even more preferably 14 to 18. If the number of carbon atoms is at least the above lower limit, the lipophilicity of IOS increases, and the function as a surfactant increases. If the number of carbon atoms is equal to or less than the above upper limit, the hydrophilicity of IOS increases, and the function as a surfactant increases.

R ¹⁶ in formula (4) represents an alkyl group. The number of carbon atoms in R ¹⁶ is preferably 1-21, more preferably 3-17, even more preferably 7-15.
R ¹⁷ in formula (4) represents an alkyl group having 1 to 5 carbon atoms. The number of carbon atoms in R ¹⁷ is preferably 1-3.
x in formula (4) is 0 to 4, preferably 0 to 2. If x is more than the said lower limit, detergency will increase more. If x is below the said upper limit, liquid stability will improve more.
Examples of Mb in formula (4) include sodium ion, potassium ion, magnesium ion, and ammonium ion. When Mb is a counterion with a valence of 2 or higher, Mb is bound to -SO ₃ by multiplying the valence by 1. For example, if Mb is a magnesium ion, the number of Mb is 1/2.

R ¹⁸ —CH(OH)(CH ₂ ) _y CH(SO ₃ Mc)—R ¹⁹ (5)
(In formula (5), R ¹⁸ is an alkyl group, R ¹⁹ is an alkyl group having 1 to 5 carbon atoms, the total number of carbon atoms is 8 to 24, y is a number of 0 to 4, Mc represents a counterion.)

Compound (5) is the hydroxy form of compound (4).
The number of carbon atoms in compound (5) is 8 to 24, preferably 10 to 20, more preferably 12 to 18, and even more preferably 14 to 18. If the number of carbon atoms is at least the above lower limit, the lipophilicity of IOS increases, and the function as a surfactant increases. If the number of carbon atoms is equal to or less than the above upper limit, the hydrophilicity of IOS increases, and the function as a surfactant increases.

R ¹⁸ in formula (5) represents an alkyl group. The number of carbon atoms in R ¹⁸ is preferably 2-22, more preferably 4-18, even more preferably 8-16.
R ¹⁹ in formula (5) represents an alkyl group having 1 to 5 carbon atoms. The number of carbon atoms in R ¹⁹ is preferably 1-3.
y in formula (5) is 0 to 4, preferably 0 to 2. If y is at least the above lower limit, the detergency will be enhanced. When y is equal to or less than the above upper limit value, the liquid stability is further improved.
Examples of Mc in formula (5) include sodium ion, potassium ion, magnesium ion, and ammonium ion. In addition, when Mc is a counter ion having a valence of 2 or more, Mc is bound to -SO ₃ by a number multiplied by 1/valence. For example, when Mc is a magnesium ion, the number of Mc is 1/2.

Mass of IOS ((IO-1S) component) having sulfonic acid groups at positions 2 to 4 and IOS ((IO-2S) component) having sulfonic acid groups at positions 5 and higher among IOS The ratio ((IO-2S)/(IO-1S) ratio) is preferably 0.3-5, more preferably 1-3. When the (IO-2S)/(IO-1S) ratio is at least the above lower limit, the slipperiness of the object to be washed is further enhanced. If the (IO-2S)/(IO-1S) ratio is equal to or less than the above upper limit, the liquid stability is further enhanced.
The (IO-1S) component is an IOS in which R ¹⁷ in formula (4) and R ¹⁹ in formula (5) have 1 to 3 carbon atoms. The (IO-2S) component is an IOS in which R ¹⁷ in formula (4) and R ¹⁹ in formula (5) have 4 or more carbon atoms.

IOS is obtained by sulfonating an internal olefin. The total number of carbon atoms in the internal olefin is 8 to 24, preferably 10 to 20, more preferably 12 to 18, even more preferably 14 to 18.
Internal olefins can be obtained, for example, by isomerizing 1-olefins obtained by dehydrating 1-alcohols. When the internal olefin is sulfonated, β-sultone is generated quantitatively, and a part of β-sultone is converted to γ-sultone and olefin sulfonic acid, which are then converted into compounds ( 4) and compound (5) (eg, J. Am. Oil Chem. Soc. 69, 39 (1992)). Here, the hydroxy group of the resulting compound (5) is inside the alkane chain and the double bond of compound (4) is inside the olefin chain. In addition, the resulting product is mainly a mixture of these, and a part thereof includes a hydroxyalkanesulfonate having a hydroxy group at the end of the carbon chain, or a double bond at the end of the carbon chain. A trace amount of α-olefin sulfonate may also be contained. Each of these products and mixtures thereof are collectively referred to herein as IOS.

The mass ratio of compound (4) to the mass of compound (5) with respect to 100% by mass of IOS, that is, the mass ratio represented by compound (4)/compound (5) (compound (4)/compound (5) ratio) is preferably 1/99 to 50/50, more preferably 1/99 to 30/70, even more preferably 5/95 to 20/80, and particularly preferably 10/90 to 15/85. When the compound (4)/compound (5) ratio is at least the above lower limit, the liquid stability is further enhanced. If the compound (4)/compound (5) ratio is equal to or less than the above upper limit, the detergency will be enhanced.

The content of the non-soap anionic surfactant is preferably 5 to 40% by mass, more preferably 10 to 40% by mass, even more preferably 10 to 30% by mass, further preferably 15 to 30% by mass, relative to the total mass of the liquid detergent. % by weight is particularly preferred. If the content of the non-soap anionic surfactant is at least the above lower limit, the detergency will be enhanced. In addition, anti-soil redeposition property is improved. When the content of the non-soap anionic surfactant is not more than the above upper limit, the fluidity of the liquid detergent is excellent and the liquid stability at low temperatures is improved.

Further, the mass ratio of the nonionic surfactant to the mass of the non-soap anionic surfactant, that is, the mass ratio represented by nonionic surfactant/non-soap anionic surfactant (nonion/anion ratio) was 0.00. 1 to 3 are preferred, 0.15 to 2 are more preferred, 0.2 to 1.5 are even more preferred, and 0.25 to 1.3 are particularly preferred. If the nonion/anion ratio is within the above range, liquid stability at low temperatures is improved. In addition, the liquid detergent is less prone to gelation, and better fluidity can be maintained.
When the liquid detergent contains an enzyme, the enzyme stability may decrease if the liquid detergent contains a non-soap anionic surfactant as the component (B). Enzyme stability can be maintained well.

Examples of cationic surfactants include caprylic acid dimethylaminopropylamide, capric acid dimethylaminopropylamide, lauric acid dimethylaminopropylamide, myristate dimethylaminopropylamide, palmitate dimethylaminopropylamide, stearic acid dimethylaminopropylamide, Long-chain fatty amidoalkyl tertiary amines such as behenic acid dimethylaminopropylamide and oleic acid dimethylaminopropylamide or their salts; fatty ester alkyl tertiary amines such as palmitate ester propyl dimethylamine and stearate ester propyl dimethylamine or salts thereof; diethanolaminopropylamide palmitate, diethanolaminopropylamide stearate; tetra short chain (alkyl of 1 to 4 carbon atoms) such as tetramethylammonium salt, tetraethylammonium salt, tetrapropylammonium salt, tetrabutylammonium salt Ammonium salts; octyltrimethylammonium salt, decyltrimethylammonium salt, dodecyltrimethylammonium salt, tetradecyltrimethylammonium salt, lauryltrimethylammonium salt, cetyltrimethylammonium salt, palmityltrimethylammonium salt, stearyltrimethylammonium salt, octyldimethylethylammonium salt , decyldimethylethylammonium salt, dodecyldimethylethylammonium salt, tetradecyldimethylethylammonium salt, lauryldimethylethylammonium salt, cetyldimethylethylammonium salt, stearyldimethylethylammonium salt, octyldiethylmethylammonium salt, decyldiethylmethylammonium salt, Long-chain (alkyl having 8 to 18 carbon atoms) trishort-chain (alkyl having 1 or 2 carbon atoms) ammonium such as dodecyldiethylmethylammonium salt, tetradecyldiethylmethylammonium salt, cetyldiethylmethylammonium salt, stearyldiethylmethylammonium salt Salt; dioctyldimethylammonium salt, didecyldimethylammonium salt, N,N-didecyl-N-methyl-poly(oxyethyl)ammonium salt, didodecyldimethylammonium salt, ditetradecyldimethylammonium salt, dicetyldimethylammonium salt, di Stearyldimethylammonium salt, dioctylmethylethylammonium salt, didecylmethylethylammonium salt di-long chain (alkyl having 8 to 18 carbon atoms) di-short chain (carbon Number 1 or 2 alkyl) ammonium salts; Long-chain (C 8-18 alkyl) dishort-chain (C 1 or 2 alkyl) hydroxyalkyl (C 1 or 2) ammonium such as stearyldimethylhydroxyethylammonium Salt; dishort chain (alkyl having 1 or 2 carbon atoms) long chain (alkyl having 1 or 2 carbon atoms) having a trialkoxysilylalkyl group (4 to 10 carbon atoms) such as [3(trimethoxysilyl)]propyl(dimethyl)octadecyl ammonium salt 8-18 alkyl)ammonium salts; amine nitrates; benzyltrimethylammonium salts; benzalkonium salts;
Examples of the salt form of the cationic surfactant include alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.), and the like. mentioned.
A cationic surfactant may be used individually by 1 type, and may be used in combination of 2 or more types.

The content of the cationic surfactant is preferably 0.1-5% by mass, more preferably 0.2-3% by mass, relative to the total mass of the liquid detergent. If the content of the cationic surfactant is within the above range, it is possible to further enhance the softening, antibacterial and deodorizing effects of clothes.

Examples of amphoteric surfactants include alkylbetaine-type, alkylamidobetaine-type, imidazoline-type, alkylaminosulfone-type, alkylaminocarboxylic acid-type, alkylamidocarboxylic acid-type, amideaminoacid-type, and phosphoric acid-type amphoteric surfactants. mentioned.
An amphoteric surfactant may be used individually by 1 type, and 2 or more types may be combined and used.

Examples of semipolar surfactants include alkylamine oxides, alkylamidopropyldimethylamine oxides, and the like.
Semi-polar surfactants may be used singly or in combination of two or more.

The content of component (B) is preferably 15 to 80% by mass, more preferably 15 to 70% by mass, even more preferably 20 to 60% by mass, and 40 to 55% by mass relative to the total mass of the liquid detergent. Especially preferred. (B) If content of a component is more than the said lower limit, detergency will increase more. (B) If content of a component is below the said upper limit, a liquid cleaning agent will be hard to gelatinize, and it can maintain fluidity|liquidity more favorably.

<(C) Component>
Component (C) is one or more selected from water and water-miscible organic solvents.
If the liquid detergent contains the component (C), it will have good fluidity.
(C) Component may be used individually by 1 type, and may be used in combination of 2 or more types.

Purified water, ion-exchanged water, distilled water, tap water, and the like can be used as water.
One type of water may be used alone, or two or more types may be used in combination.

In the case of a liquid detergent with a high surfactant concentration, the water content is preferably 3 to 30% by mass, preferably 5 to 25% by mass, more preferably 5 to 23% by mass, relative to the total mass of the liquid detergent. . If the content of water is at least the above lower limit, the viscosity suitable as a liquid detergent can be favorably maintained. If the content of water is equal to or less than the above upper limit, the liquid detergent is less likely to gel, and good fluidity can be maintained.
In the case of a liquid detergent with a low surfactant concentration, the water content is preferably 60-85% by mass, more preferably 65-83% by mass, even more preferably 70-80% by mass. If the content of water is at least the above lower limit, the viscosity of the liquid cleaning agent can be lowered, thereby improving usability and making it less flammable. Furthermore, the compatibility between the components is improved, and the manufacturability and liquid stability are further enhanced. If the content of water is equal to or less than the above upper limit, the detergency and liquid stability will be enhanced.
In addition, "the surfactant concentration is high" means that the total content of the surfactant in the liquid cleaning agent is 40% by mass or more with respect to the total mass of the liquid cleaning agent. "Low surfactant concentration" means that the total content of surfactants in the liquid detergent is less than 40% by mass with respect to the total mass of the liquid detergent.

A water-miscible organic solvent refers to an organic solvent that dissolves 50 g or more in 1 L of water at 25°C.
Water-miscible organic solvents include alcohols such as ethanol, glycerin, 1-propanol, 2-propanol, 1-butanol, 3-methoxy-3-methyl-1-butanol (Solfit, trade name); propylene glycol; (PG), butylene glycol, hexylene glycol and other glycols; diethylene glycol, triethylene glycol, tetraethylene glycol, polyethylene glycol having a molecular weight of about 200 to 1000, dipropylene glycol and other polyglycols; diethylene glycol monomethyl ether, diethylene glycol monoethyl Alkyl ethers such as ether, diethylene glycol monobutyl ether (butyl carbitol), diethylene glycol dimethyl ether, and the like are included. Among these, ethanol, glycerin, 3-methoxy-3-methyl-1-butanol, propylene glycol, and a molecular weight of about 200 to 1000 are preferred from the viewpoints of low odor, availability, fluidity of liquid detergents, and the like. of polyethylene glycol and diethylene glycol monobutyl ether (butyl carbitol) are preferred, and ethanol, glycerin and propylene glycol are more preferred.
The water-miscible organic solvents may be used singly or in combination of two or more. It is preferable to use propylene glycol and ethanol in combination from the viewpoints of enzyme stability (residual activity), appearance stability, and fluidity of the liquid detergent.

The content of the water-miscible organic solvent is preferably 3-40% by mass, more preferably 5-20% by mass, and even more preferably 8-15% by mass, relative to the total mass of the liquid detergent. If the content of the water-miscible organic solvent is at least the above lower limit, the appearance stability and fluidity of the liquid detergent will be good. When the content of the water-miscible organic solvent is equal to or less than the above upper limit, the stability of the enzyme is improved when the liquid detergent contains the enzyme.

Further, the mass ratio of water to the mass of the water-miscible organic solvent, that is, the mass ratio represented by water/water-miscible organic solvent (water/organic solvent ratio) is preferably 0.2 to 3, and 0.8. ~2.5 is more preferred, and 1-2 is even more preferred. If the water/organic solvent ratio is within the above range, the fluidity of the liquid cleaning agent is further improved.

The content of component (C) is preferably 6 to 60% by mass, more preferably 10 to 50% by mass, even more preferably 20 to 45% by mass, even more preferably 30 to 40% by mass, relative to the total mass of the liquid detergent. Especially preferred. If the content of the component (C) is at least the above lower limit, the appearance stability and fluidity of the liquid detergent will be good. If the content of the component (C) is equal to or less than the above upper limit, the stability of the enzyme is improved when the liquid detergent contains the enzyme.

<(D) Component>
(D) Component is an inorganic alkaline agent.
The component (D) is a component that imparts detergency to the liquid detergent, especially detergency against sebum stains (sebum detergency).
The inorganic alkaline agent is a component that dissolves in whole or in part in water and exhibits basicity, and the pH of a 1% by mass aqueous solution at 25° C. is 8 or higher.
Specific examples of component (D) include sodium carbonate, sodium hydrogen carbonate, double salts of sodium carbonate and sodium hydrogen carbonate (sodium sesquicarbonate), potassium carbonate, carbonates such as potassium hydrogen carbonate; sodium metasilicate, layered silicon and silicates such as sodium phosphate. Among these, sodium carbonate, potassium carbonate, sodium metasilicate, and lamellar sodium silicate are preferable from the viewpoint of further increasing detergency.
(D) Component may be used individually by 1 type, and 2 or more types may be combined and used.

In the liquid detergent, all of the component (D) may be dissolved, or at least part of the component (D) may exist in a solid state. In other words, the component (D) may be dissolved in the liquid detergent or may exist in a solid state without being dissolved. may be included.
Hereinafter, of the components (D), the component (D) dissolved in the liquid detergent is also referred to as "component (D1)", and the component (D) present in the liquid detergent in a solid state is referred to as "component (D1)". Also referred to as "(D2) component".
The entire amount of component (D) may be blended in the liquid detergent as it is, or an amount not exceeding the solubility of the total amount of component (D) may be blended in the liquid detergent and dissolved. may be incorporated into the liquid detergent.

The surface of component (D2) may be modified. If the surface of the component (D2) is modified, the component (D2) does not dissolve and the particle appearance (number of particles, particle size, etc.) can be maintained well, and the appearance stability of the component (D2) is enhanced. . In addition, the component (D2) is less likely to precipitate, improving dispersion stability. Furthermore, the dissolution rate of component (D2) can be controlled.
As a method for modifying the surface of the component (D2), for example, a method of baking an inorganic alkaline agent can be used.
In this specification, the surface-modified inorganic alkaline agent is also referred to as "modified alkaline agent". In the present invention, sodium carbonate partially containing sodium bicarbonate and sodium sesquicarbonate is also regarded as a modified alkaline agent.

Moreover, the surface of the component (D2) may be coated with a coating agent. That is, a coating layer may be formed on the surface of the component (D2). If the surface of the component (D2) is coated with a coating agent, the component (D2) does not dissolve and the particle appearance (number of particles, particle size, etc.) can be maintained well, and the appearance stability of the component (D2) increases. In addition, the component (D2) is less likely to precipitate, improving dispersion stability. Furthermore, the dissolution rate of component (D2) can be controlled. However, when the liquid detergent of the present invention is used in a washing machine or an automatic dispenser equipped with an automatic detergent dispenser, the surface of component (D2) should be It is preferably not coated with a coating.
In this specification, an inorganic alkaline agent whose surface is coated with a coating agent is also referred to as a "coated alkaline agent".

As a coating agent, it is difficult to dissolve in a liquid detergent and easily adheres to an inorganic alkaline agent, but it dissolves, swells, disintegrates, or disperses easily in a washing liquid obtained by diluting a liquid detergent with water, and is easily removed from an inorganic alkaline agent. A material that can be easily separated is preferable. Coating agents include, for example, hydroxypropylmethylcellulose, hydroxypropylcellulose, methylcellulose, hydroxyethylcellulose, polyacrylic acid or salts thereof, acrylic acid-maleic acid copolymers or salts thereof, acrylic acid-maleic anhydride copolymers or salts thereof. , fatty acid or its salt, polyvinyl alcohol, pullulan, xanthan gum, starch, modified starch, sodium sulfate, calcium carbonate, aluminosilicate (zeolite, etc.), titanium oxide, and the like. Among these, hydroxypropylmethylcellulose, hydroxypropylcellulose, methylcellulose, hydroxyethylcellulose, polyacrylic acid or a salt thereof, acrylic acid-maleic acid copolymer, are used from the viewpoint of controlling the solubility in the liquid detergent and maintaining the appearance of the particles. Combined or salt thereof, acrylic acid-maleic anhydride copolymer or salt thereof, fatty acid or salt thereof, polyvinyl alcohol, pullulan, xanthan gum, starch, modified starch, sodium sulfate, calcium carbonate, hydroxypropyl methylcellulose, hydroxypropyl cellulose are preferable. , methylcellulose, polyacrylic acid or its salt, acrylic acid-maleic acid copolymer or its salt, acrylic acid-maleic anhydride copolymer or its salt, and sodium sulfate are more preferred.
A coating agent may be used individually by 1 type, and may be used in combination of 2 or more type.

The coating alkali agent is a fluidized bed granulation method in which a coating agent is sprayed while fluidizing an inorganic alkali agent to granulate and coat. agitating granulation method, immersing and agitating an inorganic alkaline agent in a coating agent, distilling off the solvent to obtain granules and coated products, adding a coating agent to an inorganic alkaline agent, and kneading Extrusion granulation method of mixing and extruding this with an extruder, rolling granulation method of granulating and coating by spraying coating agent while rotating inorganic alkaline agent, spraying slurry containing inorganic alkaline agent and coating agent It can be obtained by a spray-drying granulation method or the like.
The coating agent may be dissolved or dispersed in any solvent and used in the form of a solution.

Furthermore, a salt that makes the coating agent sensitive (sensitive salt) is added to the granules obtained by the above-described method using any machine such as a mixer, granulator, or fluidized bed, and mixed, A coated alkaline agent may be produced.
As used herein, the term "salt that sensitizes the coating material" refers to a salt that increases the viscosity of the coating material, causes gelation, or forms a film. Preferred examples of such sensitive salts include polyvalent chlorides such as calcium chloride, magnesium chloride and aluminum chloride; polyvalent sulfates such as magnesium sulfate and aluminum sulfate; polyvalent nitrates such as calcium nitrate and magnesium nitrate; polyvalent organic acid salts such as calcium acetate and calcium citrate; calcium oxide; calcium hydroxide; and sodium tetraborate.
One type of sensitive salt may be used alone, or two or more types may be used in combination.

The ratio of the coating layer to 100 parts by mass of component (D2) is preferably 1 to 60 parts by mass, more preferably 3 to 50 parts by mass, and even more preferably 5 to 40 parts by mass. If the ratio of the coating layer is at least the above lower limit, the effect of component (D2) covering the surface can be sufficiently obtained. If the ratio of the coating layer is not more than the above upper limit, the coating layer quickly dissolves, swells, disintegrates, or disperses in the washing liquid, and component (D2) can be prevented from being left undissolved. In addition, the amount of component (D2) per unit weight can be increased.

The particle size of component (D) is preferably 10 to 2000 μm, more preferably 100 to 1500 μm, even more preferably 200 to 1000 μm. When the particle size of the component (D) is at least the above lower limit, the dissolution rate can be easily controlled, and the appearance of the particles can be excellent. If the particle size of the component (D) is equal to or less than the above upper limit, the dissolution rate in water is improved.
On the other hand, when it is not necessary to control the dissolution rate of component (D), the particle size of component (D) is preferably 200 μm or less, more preferably 100 μm or less. In particular, the particle size of component (D) whose surface is not coated is preferably less than 200 µm, more preferably less than 100 µm. If the particle size of the component (D) is equal to or less than the above upper limit, the component (D2) dissolves quickly when the liquid detergent is diluted with water. In addition, the solid component (D2) is less likely to remain on the inlet of the washing machine or on the clothes after washing. Therefore, if the particle size of component (D) is 200 µm or less, it is suitable for use in washing machines and automatic dispensers equipped with an automatic detergent injection function.

The particle size of the coated alkaline agent is preferably 10 to 2000 μm, more preferably 100 to 1500 μm, even more preferably 200 to 1000 μm. When the particle diameter of the coated alkaline agent is at least the above lower limit, the dissolution rate can be easily controlled, and the appearance of the particles is excellent. If the particle size of the coated alkaline agent is equal to or less than the above upper limit, the dissolution rate in water is improved.
On the other hand, when the dissolution rate control of the coated alkaline agent is not required, the particle size of the coated alkaline agent is preferably 200 μm or less, more preferably 100 μm or less.

The particle size of the component (D) and the particle size of the coated alkaline agent are measured by a laser diffraction scattering method using a particle size distribution analyzer (for example, manufactured by Beckman Coulter, Inc., product name "LS 13 320"). This is the standard median diameter. The particle size may be measured by a dry method in which the component (D) or the coated alkaline agent is measured as it is, or by a wet method in which the component (D) or the coated alkaline agent is dispersed in a solvent and measured.

The content of component (D) is preferably 1 to 20% by mass, more preferably 2 to 15% by mass, even more preferably 2.5 to 10% by mass, relative to the total mass of the liquid detergent. (D) If content of a component is more than the said lower limit, detergency will increase more. (D) If content of a component is below the said upper limit, the fluidity|liquidity of a liquid detergent can be maintained favorably. Moreover, it is also excellent in liquid stability at low temperatures.
Further, when at least part of the component (D) exists in a solid state in the liquid detergent, the ratio of the component (D2) is 10 to 80% by mass with respect to the total mass of the component (D). Preferably, 15 to 70% by mass, and even more preferably 20 to 60% by mass. If the ratio of component (D2) to the total mass of component (D) is equal to or less than the above upper limit, fluidity of the liquid detergent and beautiful appearance of particles can be obtained.

<(E) component>
(E) Component is a dispersant.
If the liquid detergent contains the (E) component, it is possible to suppress re-adhesion of sebum stains and their decomposition products removed from the textiles during washing to the textiles. Therefore, it is possible to further suppress the occurrence of yellowing of the textile product, and the detergency against the yellowing of the textile product is further enhanced.
Examples of component (E) include alkylene oxide adducts of polyalkyleneimine, polycarboxylic acid polymers, and salts of polycarboxylic acid polymers.
(E) Component may be used individually by 1 type, and may be used in combination of 2 or more types.

The polyalkyleneimine of the alkylene oxide adduct of polyalkyleneimine (hereinafter also referred to as "(E1) component") is represented by, for example, the following general formula (6).
NH ₂ —R ²⁰ —[N(B)-R ²⁰ ] _g —NH ₂ (6)
(In general formula (6), R ²⁰ is each independently an alkylene group having 2 to 6 carbon atoms. B represents a hydrogen atom or another branched polyamine chain. g is a number of 1 or more. However, all of the above B are not hydrogen atoms.)
That is, the polyalkyleneimine represented by the general formula (6) has a branched polyamine chain in its structure.

R ²⁰ is a linear alkylene group having 2 to 6 carbon atoms or a branched alkylene group having 3 to 6 carbon atoms. R ²⁰ is preferably an alkylene group having 2 to 4 carbon atoms, more preferably an alkylene group having 2 carbon atoms.
The polyalkyleneimine is obtained by polymerizing one or more alkyleneimine having 2 to 6 carbon atoms by a conventional method. The alkyleneimine having 2 to 6 carbon atoms includes ethyleneimine, propyleneimine, 1,2-butyleneimine, 2,3-butyleneimine, 1,1-dimethylethyleneimine and the like.
As the polyalkyleneimine, polyethyleneimine (PEI) and polypropyleneimine are preferable, and PEI is more preferable. PEI is obtained by polymerizing ethyleneimine and has a branched chain structure containing primary, secondary and tertiary amine nitrogen atoms in its structure.

The weight average molecular weight of the polyalkyleneimine is preferably 200-2000, more preferably 300-1500, even more preferably 400-1000, and particularly preferably 500-800.
The polyalkyleneimine preferably has 5 to 30 active hydrogens in one molecule, more preferably 7 to 25 active hydrogens, and even more preferably 10 to 20 active hydrogens.

The (E1) component is obtained by adding an alkylene oxide to a polyalkyleneimine. As this method, for example, in the presence of a basic catalyst such as sodium hydroxide, potassium hydroxide and sodium methylate, an alkylene oxide such as ethylene oxide is added to the polyalkyleneimine starting material at 100 to 180°C. and the like.
Alkylene oxides include those having 2 to 4 carbon atoms. Examples of the alkylene oxide include ethylene oxide, propylene oxide and butylene oxide, with ethylene oxide and propylene oxide being preferred, and ethylene oxide being more preferred.

Component (E1) includes ethylene oxide adducts of polyalkyleneimine, propylene oxide adducts of polyalkyleneimine, and ethylene oxide-propylene oxide adducts of polyalkyleneimine. The ethylene oxide-propylene oxide adduct of the polyalkyleneimine is obtained by adding ethylene oxide and propylene oxide to the polyalkyleneimine. ) are optional.
Component (E1) is preferably an ethylene oxide adduct of polyalkyleneimine or an ethylene oxide-propylene oxide adduct of polyalkyleneimine, more preferably an ethylene oxide adduct of polyalkyleneimine.

The component (E1) is preferably one in which an average of 5 to 40 alkylene oxides are added to 1 atom of the active hydrogen of the raw material polyalkyleneimine, and an average of 10 to 30 alkylene oxides are added. is more preferred. That is, it is preferable that an average of 5 to 40 mol of alkylene oxide is added per 1 mol of active hydrogen of the raw material polyalkyleneimine, and that of an average of 10 to 30 mol of alkylene oxide is more preferable.

The weight average molecular weight of component (E1) is preferably from 1,000 to 80,000, more preferably from 2,000 to 50,000, even more preferably from 5,000 to 30,000, and particularly preferably from 10,000 to 20,000.
In addition, the mass average molecular weight in this specification means the value obtained by gel permeation chromatography using polyethylene glycol as a standard substance.
The (E1) component includes, for example, compounds represented by the following general formula (7).

In general formula (7), each R ²² is independently an alkylene group having 2 to 6 carbon atoms. Each h is independently a number of 1 or more.
R ²² is preferably an alkylene group having 2 or 3 carbon atoms, more preferably an alkylene group having 2 carbon atoms. h is the average repeating number of (R ²² O), each independently preferably 5-40, more preferably 10-30.

(E1) component may be used individually by 1 type, and may be used in combination of 2 or more types.
As the (E1) component, a synthetic product or a commercially available product may be used.
(E1) As a commercial product of the component, for example, trade name "Sokalan HP20" manufactured by BASF Corporation can be mentioned.

The content of component (E1) is preferably 0.01 to 5% by mass, more preferably 0.1 to 4% by mass, and even more preferably 1 to 3% by mass, relative to the total mass of the liquid detergent. (E1) If the content of the component is at least the above lower limit, the detergency against yellowing will be better. If the content of the component (E1) is equal to or less than the above upper limit value, the appearance stability is improved.

Examples of polycarboxylic acid-based polymers and salts of polycarboxylic acid-based polymers (hereinafter collectively referred to as "component (E2)") include, for example, polyacrylic acid and its salts, polymaleic acid and its salts, acrylic acid -maleic acid copolymers and salts thereof, copolymers of hydrocarbons having 4 to 12 carbon atoms and maleic acid and salts thereof, acrylic acid-methacrylic acid copolymers and salts thereof, and the like.
The (E2) component is one or more selected from acrylic acid-maleic acid copolymers and salts thereof, and one selected from copolymers of hydrocarbons having 4 to 12 carbon atoms and maleic acid and salts thereof. More than one species is preferable, and one or more species selected from copolymers of hydrocarbons having 4 to 12 carbon atoms and maleic acid and salts thereof are more preferable.
The salt may be partly or wholly, and the salt is preferably an alkali metal salt such as sodium or potassium or an organic amine salt such as alkanolamine.

The hydrocarbon having 4 to 12 carbon atoms in the component (E2) may be any one that can be copolymerized with maleic acid. Hydrocarbons of ∼10 are more preferred, hydrocarbons of 4 to 9 carbon atoms are more preferred, hydrocarbons of 5 to 9 carbon atoms are particularly preferred, and hydrocarbons of 8 carbon atoms are most preferred. Such hydrocarbons include, for example, unsaturated chain hydrocarbons having double bonds.

In the acrylic acid-maleic acid copolymer, the molar ratio of copolymerization of acrylic acid and maleic acid (acrylic acid:maleic acid) is preferably 50:50 to 80:20, more preferably 50:50 to 70:30. More preferably, 55:45 to 65:35 is even more preferable. Higher proportions of acrylic acid are more soluble in liquid detergents. In addition, the polymerizability is enhanced and the production of the copolymer is facilitated. A higher proportion of maleic acid increases the ability to break down the insolubilized modified starch-calcium complex, resulting in higher detergency.

The (E2) component may be a crosslinked polymer or a non-crosslinked polymer.
Examples of the crosslinked polymer include a crosslinked polymer crosslinked by a crosslinking agent. Examples of the cross-linking agent include allyl ether compounds. Examples of the allyl ether compound include allyl ether, allyl ether of sugar, allyl ether of sugar alcohol, and the like. Examples of the sugar include sucrose and the like. Examples of the sugar alcohol include pentaerythritol.

The weight average molecular weight of component (E2) is preferably 1,000 to 100,000, more preferably 3,000 to 100,000, even more preferably 5,000 to 80,000, and particularly preferably 5,000 to 50,000. If the mass average molecular weight of the component (E2) is at least the above lower limit, the coating and washing properties of the liquid detergent will be improved. (E2) If the mass average molecular weight of the component is at most the above upper limit, the liquid stability of the liquid detergent will be improved.
In particular, the weight average molecular weight of a copolymer of a hydrocarbon having 4 to 12 carbon atoms and maleic acid is preferably 1,000 to 100,000, more preferably 3,000 to 50,000. When the weight-average molecular weight is at least the above lower limit, it becomes easy to take out the laundry after washing from the washing machine. If the weight average molecular weight is equal to or less than the above upper limit, the liquid stability of the liquid detergent is improved.
The copolymer of acrylic acid and maleic acid preferably has a mass average molecular weight of 5,000 to 100,000, more preferably 5,000 to 50,000. When the weight-average molecular weight is at least the above lower limit, it becomes easy to take out the laundry after washing from the washing machine. If the weight average molecular weight is equal to or less than the above upper limit, the liquid stability of the liquid detergent is improved.

(E2) component may be used individually by 1 type, and may be used in combination of 2 or more types.
As the (E2) component, a synthetic product or a commercially available product may be used.
Commercially available products of component (E2) include, for example, one or more selected from copolymers of hydrocarbons having 4 to 12 carbon atoms and maleic acid and salts thereof. Flow 540 (sodium salt)", "Quinflow 542 (sodium salt)", "Quinflow 543 (ammonium salt)", "Quinflow 640 (sodium salt)"; trade name "Sokalan CP9 (sodium salt)" manufactured by BASF )” and the like.
For one or more selected from acrylic acid-maleic acid copolymers and salts thereof, trade name "Sokalan CP7 (sodium salt)" manufactured by BASF; trade name "Aqualic TL-400" manufactured by Nippon Shokubai Co., Ltd. (sodium salt)” and the like.

The content of component (E2) is preferably 0.01 to 5% by mass, more preferably 0.1 to 4% by mass, and even more preferably 1 to 3% by mass, relative to the total mass of the liquid detergent. (E2) If the content of the component is at least the above lower limit, the detergency against yellowing will be better. (E2) If the content of the component is equal to or less than the above upper limit, the fluidity of the liquid detergent will be good.

The (E) component is preferably the (E1) component from the viewpoint of particularly excellent cleaning performance against yellowing and fluidity of the liquid detergent. Among the components (E1), the ethylene oxide adduct of polyethyleneimine represented by the general formula (7) is particularly preferred.

The content of component (E) is preferably 0.02 to 10% by mass, more preferably 0.2 to 8% by mass, and even more preferably 1 to 6% by mass, relative to the total mass of the liquid detergent. (E) If the content of the component is at least the above lower limit, the detergency against yellowing will be better. (E) If content of a component is below the said upper limit, the fluidity|liquidity of a liquid cleaning agent will become favorable.

The total content of components (A) and (E) is preferably 0.07 to 15% by mass, more preferably 0.3 to 10% by mass, more preferably 1.1 to 1.1%, based on the total mass of the liquid detergent. 7% by mass is more preferred, and 2 to 5% by mass is particularly preferred. If the total content of the component (A) and the component (E) is at least the above lower limit, the detergency against yellowing will be better. If the total content of the component (A) and the component (E) is equal to or less than the above upper limit, the appearance stability of the liquid detergent will be good.

The mass ratio of component (A) to the mass of component (E), that is, the mass ratio (A/E ratio) represented by component (A)/component (E) is preferably 0.005 to 50, and 0.005 to 50. 05 to 20 are more preferred, 0.1 to 10 are more preferred, 0.1 to 5 are particularly preferred, and 0.1 to 1 are most preferred. If the A/E ratio is at least the above lower limit, the detergency against yellowing will be better. If the A/E ratio is equal to or less than the above upper limit, the fluidity of the liquid detergent will be good.

<(F) Component>
(F) Component is a structuring agent.
The liquid detergent is structured by containing the component (F). Therefore, when the liquid detergent contains insoluble particles (for example, the above-described component (D2)), the dispersion stability of the insoluble particles can be enhanced, the insoluble particles can be uniformly dispersed in the liquid detergent, and the state can be maintained satisfactorily. can.
In this specification, the term “structured” refers to a state in which the viscosity changes before and after force is applied.

Structuring agents include, for example, bacterial cellulose, non-bacterial cellulose, and the following compound (8).
A structuring agent may be used individually by 1 type, and may be used in combination of 2 or more types.

Bacterial cellulose is cellulose produced by fermentation of bacteria of the genus Acetobacter.
Examples of bacterial cellulose include so-called mesh-like bacterial cellulose, in which water-insoluble fibers are branched into a network and mesh with each other to form a network.

At least part of the bacterial cellulose may be coated or mixed with a thickening agent.
Thickeners include, for example, carboxymethylcellulose (CMC), modified CMC, xanthan products, pectin, alginates, gellan gum, welan gum, diutan gum, rhamsan gum, carrageenan, guar gum, agar, gum arabic, ghatti gum, karaya gum, tragacanth gum, Examples include tamarind gum and locust bean gum.
A thickener may be used individually by 1 type, and may be used in combination of 2 or more type.

Commercially available products can be used as the bacterial cellulose, such as CPKelco U.S.A. S. company's product name "CELLULON (registered trademark)".

Non-bacterial cellulose is cellulose obtained from vegetables, fruits, and wood, and is also called cellulose fiber.

As the non-bacterial cellulose, commercially available products can be used, for example, the trade name "Avicel (registered trademark)" manufactured by FMC, the trade name "Citri-Fi" manufactured by Fiberstar, the trade name "Betafib" manufactured by Cosun, etc. mentioned.

The compound (8) is a compound (triglyceride component) represented by the following general formula (8).

In formula (8), Z ¹ to Z ³ are each independently a hydrogen atom, a hydroxy group, or a carboxy group. Z ¹ to Z ³ may be the same or different.
In formula (8), a + b = 7 to 19, c + d = 7 to 19, and e + f = 7 to 19, preferably a + b = 11 to 15, c + d = 11 to 15, and e + f = 11 to 15, More preferably, a+b=13-15, c+d=13-15, and e+f=13-15. When each of a+b, c+d, and e+f is 7 or more, the volume of the hydrophobic group portion becomes sufficiently bulky, and the coating detergency becomes high. On the other hand, if each of a+b, c+d, and e+f is 19 or less, the risk of solidification due to bulkiness of the hydrophobic group portion is reduced.

Examples of compound (8) include compound (8-1) in which Z ¹ to Z ³ are hydroxy groups, compound (8-2) in which Z ¹ to Z ³ are hydrogen atoms, and the like.
Hydrogenated castor oil is particularly preferred as compound (8-1), and hydrogenated palm oil is particularly preferred as compound (8-2).
Hydrogenated castor oils may include glycerides, especially triglycerides, containing alkyl or alkenyl moieties with 10 to 22 carbon atoms incorporating hydroxyl groups, specifically trihydroxystearin, dihydroxystearin, and the like.
Hydrogenated castor oil is obtained by hydrogenating castor oil to convert double bonds that may be present as ricinoleyl moieties in the starting oil. Transformation of the double bond converts the ricinoleyl moiety to a saturated hydroxyalkyl moiety such as hydroxystearyl.
Hydrogenated castor oil can be processed in any suitable starting form, including, but not limited to, which can be used in the solid state, the melt state, or mixtures thereof.

As hydrogenated castor oil, commercially available products can be used, for example, Rheox, Inc.; product name "THIXCIN (registered trademark)" manufactured by NOF Corporation, and product name "Caster Wax A Flake" manufactured by NOF Corporation.
As the hardened palm oil, commercially available products can be used.

As the component (F), bacterial cellulose and non-bacterial cellulose are preferable because even a small amount thereof can sufficiently exhibit the effect of enhancing the dispersion stability of insoluble particles such as the component (D2), and a highly transparent liquid appearance can be easily obtained. , bacterial cellulose is more preferred.

The content of component (F) is preferably 0.02 to 2% by mass, more preferably 0.04 to 1.5% by mass, and further preferably 0.05 to 1% by mass, relative to the total mass of the liquid detergent. preferable.
Further, for example, when using a commercially available bacterial cellulose preparation such as "CELLULON (registered trademark)" as the component (F), the content of the component (F) is the actual content of the product. , preferably 1 to 10% by mass, more preferably 2 to 8% by mass, and even more preferably 2.5 to 7% by mass, relative to the total mass of the liquid detergent.
Here, the "content of the product as it is" means the content of the product itself, including the water contained in the product.
If the content of the component (F) is at least the above lower limit, the dispersion stability of the insoluble particles such as the component (D2) is enhanced. If the content of the component (F) is equal to or less than the above upper limit, the viscosity of the liquid detergent becomes lower, and usability and liquid stability are further enhanced.

<Optional component>
Optional components include builder components other than component (D), chelating agents, pH adjusters, viscosity reducers and solubilizers, enzymes, antibacterial agents, thickeners other than component (F), and Alkali agent, higher fatty acid or its salt, preservative, antioxidant, inorganic reducing agent, enzyme stabilizer, texture improver, dye transfer inhibitor, anti-soil redeposition agent other than component (E), coloring agent, emulsion agents, flavoring agents, anti-tarnishing agents, hydrotropic agents, bleaching agents, pearl agents, extracts of natural products, and the like.
Optional components may be used singly or in combination of two or more.

Builder components other than component (D) (hereinafter also referred to as "other builder components") include, for example, sodium chloride, potassium chloride, sodium sulfate, potassium sulfate, sodium sulfite, potassium sulfite, sodium hydrogensulfite, ammonium chloride, ammonium sulfate, sodium tetraborate, sodium pyrophosphate, sodium tripolyphosphate, sodium hydroxide, potassium hydroxide, aluminosilicates (eg, zeolite, etc.);
Other builder components may be used singly or in combination of two or more.
Other builder components may be dissolved in the liquid detergent or present in solid form.
The content of other builder components is preferably 20% by mass or less, more preferably 0.5 to 10% by mass, based on the total mass of the liquid detergent.

As the chelating agent, for example, a chelating agent having a tri- or tetravalent carboxylic acid group or a salt thereof is preferred. Specific examples include citric acid or its salts, aminocarboxylic acid-based chelating agents or its salts. Aminocarboxylic acid refers to a compound containing at least one primary to tertiary amino group and at least one carboxyl group in one molecule, and an aminocarboxylic acid-based chelating agent is a chelating agent that is an aminocarboxylic acid. say.
Aminocarboxylic acid-based chelating agents that are known in the field of detergents can be used. Specific examples include methylglycine diacetate (MGDA), methylglycine diacetate, L-glutamic acid diacetic acid (GLDA), L-glutamic acid diacetate, diethylenetriamine pentaacetic acid (DTPA), diethylenetriamine pentaacetate, and ethylenediamine succinic acid. (EDDS), ethylenediamine succinate, 3-hydroxy-2,2'-iminodisuccinic acid (HIDS), 3-hydroxy-2,2'-iminodisuccinate, L-aspartic acid-N,N-2 acetic acid (ASDA ), L-aspartic acid-N,N-2 acetate and the like. Among these, citric acid or its salts, MGDA or its salts are preferred, and trisodium methylglycine diacetate is more preferred.
A chelating agent may be used individually by 1 type, and may be used in combination of 2 or more types.
The content of the chelating agent is preferably 0.01% by mass or more, more preferably 0.05% by mass or more, relative to the total mass of the liquid detergent. 0.1% by mass or more is more preferable. If the content of the chelating agent is at least the above lower limit, the detergency improving effect, liquid stability improving effect, and discoloration preventing effect can be sufficiently obtained.

Examples of pH adjusters include alkali metal hydroxides such as sodium hydroxide and potassium hydroxide; basic amino acids such as arginine and lysine; ammonia; acid agents such as sulfuric acid, hydrochloric acid, phosphoric acid, and citric acid. . Among these, sodium hydroxide, sulfuric acid and hydrochloric acid are preferred.
The pH adjusters may be used singly or in combination of two or more.
The amount of the pH adjuster to be added may be appropriately set so as to adjust the pH of the liquid detergent to a predetermined value.

Viscosity reducers and solubilizers include, for example, aromatic sulfonic acids or salts thereof. Specific examples include toluenesulfonic acid, xylenesulfonic acid, cumenesulfonic acid, substituted or unsubstituted naphthalenesulfonic acid, and salts thereof. Salts of aromatic sulfonic acids include sodium salts, potassium salts, calcium salts, magnesium salts, ammonium salts, alkanolamine salts, and the like.
The viscosity reducers and solubilizers may be used singly or in combination of two or more.
The content of the viscosity reducer and the solubilizer is preferably 0.1 to 15% by weight with respect to the total weight of the liquid detergent.

If the liquid detergent contains an enzyme, the cleaning power against sebum stains, protein stains, and spilled food stains is enhanced.
Here, the enzyme means an enzyme preparation.
As the enzyme, a liquid enzyme preparation may be used, or a solid (granular) enzyme preparation may be used. When a solid enzyme preparation is used, it is preferred that a part or the whole of it is present in the liquid detergent in a solid state from the viewpoint of enzyme stability.

Examples of enzymes include protease, amylase, lipase, cellulase, mannanase and the like.
As the protease, trade names Savinase 16L, Savinase Ultra 16L, Savinase Ultra 16XL, Savinase Evity 16L, Everlase 16L TypeEX, Everlase Ultra 16L, Esperase 5L, Alcalase 5L, 2L, Alcalase, 2L, Alcalase, 2L, 2L, Alcalase, 16XL, Savinase Evity 16L, Savinase Ultra 16XL, Savinase Evity 16L, and Alcalase are available as protease preparations from Novozymes. Ｌｉｑｕａｎａｓｅ２．５Ｌ、ＬｉｑｕａｎａｓｅＵｌｔｒａ２．５Ｌ、ＬｉｑｕａｎａｓｅＵｌｔｒａ２．５ＸＬ、Ｃｏｒｏｎａｓｅ４８Ｌ、ＰｒｏｇｒｅｓｓＵｎｏ１００Ｌ、Ｄｅｏｚｙｍｅ、ＳａｖｉｎａｓｅＥｖｉｔｙ１２Ｔ、ＫａｎｎａｓｅＥｖｉｔｙ２４Ｔ；デュポン社から入手できる商品名ＥＦＦＥＣＴＥＮＺＰ１５０、ＥＦＦＥＣＴＥＮＺＰ１００、ＰＲＥＦＥＲＥＮＺＰ１００などis mentioned.
アミラーゼとしては、アミラーゼ製剤としてノボザイムズ社から入手できる商品名Ｔｅｒｍａｍｙｌ３００Ｌ、ＴｅｒｍａｍｙｌＵｌｔｒａ３００Ｌ、Ｄｕｒａｍｙｌ３００Ｌ、Ｓｔａｉｎｚｙｍｅ１２Ｌ、ＳｔａｉｎｚｙｍｅＰｌｕｓ１２Ｌ、Ａｍｐｌｉｆｙ１２Ｌ、ＡｍｐｌｉｆｙＰｒｉｍｅ１００Ｌ、ＳｔａｉｎｚｙｍｅＰｌｕｓ１２Ｔ；デュポン社から入手できる商品名ＥＦＦＥＣＴＥＮＺ S100; trade name pullulanase Amano available from Amano Enzyme Co.; trade name DB-250 available from Seikagaku Corporation;
Examples of lipase include Lipex 100L, Lipolase 100L, Lipex 100T (trade names) available from Novozymes as lipase preparations.
Examples of cellulase include Endolase 5000L, Celluzyme 0.4L, Carezyme 4500L and Celluclean 4500T available from Novozymes as cellulase preparations, and REVITALENTZ 2000 available from DuPont.
Examples of mannanase include Mannaway 4L, Mannaway 4.0T and the like available from Novozymes as mannanase preparations.
酵素が２種以上配合されたマルチ酵素としては、ＭｅｄｌｅｙＣｏｒｅ２１０Ｌ、ＭｅｄｌｅｙＣｏｒｅ２００Ｌ、ＭｅｄｌｅｙＢｏｏｓｔ３００Ｌ、ＭｅｄｌｅｙＡｄｖａｎｃｅ２００Ｔ、ＭｅｄｌｅｙＧｌｏｗ２００Ｌ、ＭｅｄｌｅｙＢｒｉｌｌｉａｎｔ１００Ｌ、ＭｅｄｌｅｙＥｓｓｅｎｔｉａｌ１５０Ｌ、ＭｅｄｌｅｙＣｏｒｅ２００Ｔ、ＭｅｄｌｅｙＣｌｅａｎＲ、ＭｅｄｌｅｙＥｓｓｅｎｔｉａｌ 200T, Medley SmartR, Medley Advance 200T, Medley Boost 200L, Medley Boost 200T, Medley SuperioR 100T and the like.
An enzyme may be used individually by 1 type, and may be used in combination of 2 or more types.

The content of the enzyme is preferably 0.1-5% by mass, more preferably 0.3-3% by mass, and even more preferably 0.4-2.5% by mass, relative to the total mass of the liquid detergent. If the content of the enzyme is within the above range, the detergency will be enhanced and it will be economically advantageous.

Antibacterial agents include, for example, diclosan, triclosan, isopropylmethylphenol, polylysine, polyhexamethylenebiguanide, and the like. Among these, antibacterial agents having a diphenyl structure are preferred, and diclosan and triclosan are more preferred.
One type of antibacterial agent may be used alone, or two or more types may be used in combination.
The content of the antibacterial agent is preferably 0.001 to 10% by mass, more preferably 0.01 to 3% by mass, even more preferably 0.03 to 2% by mass, relative to the total mass of the liquid detergent.

In general, if a liquid detergent contains an antibacterial agent having a diphenyl structure such as diclosan or triclosan, the liquid detergent tends to be colored when exposed to light, especially when the pH of the liquid detergent is high. tends to be
However, if the liquid detergent contains the component (A), the component (A) absorbs the light that hits the liquid detergent, thereby suppressing the reaction occurring between the phenyl groups and improving the stability against light. It is believed that the coloration of the liquid detergent when exposed to light can be suppressed.
The mass ratio of component (A) to the mass of the antibacterial agent having a diphenyl structure, that is, the mass ratio represented by component (A)/antibacterial agent having a diphenyl structure (hereinafter also referred to as "A/antibacterial agent ratio"). is preferably 0.1 to 60, more preferably 0.25 to 60, more preferably 1 to 30, particularly preferably 1 to 10, most preferably 1 to 5. If there is, the stability of the liquid detergent against light is further improved, and coloration when exposed to light can be further suppressed. If the A/antibacterial agent ratio is equal to or less than the above upper limit, a sufficient antibacterial effect is likely to be obtained.

Examples of thickeners other than component (F) (hereinafter also referred to as “other thickeners”) include acrylic polymers, xanthan gum, and galageenan.
Examples of commercially available acrylic polymers include the Carbopol (registered trademark) series manufactured by Lubrizol. The Carbopol series includes, for example, Carbopol ETD 2623, Carbopol EZ3, Carbopol EZ4, Carbopol Ultrez20, Carbopol Ultrez21, Carbopol Aqua 30 and the like.
Other thickeners may be used singly or in combination of two or more.
The content of other thickening agents is preferably 6% by mass or less, more preferably 0.2 to 4% by mass, relative to the total mass of the liquid detergent.

Examples of alkaline agents other than component (D) (hereinafter also referred to as “other alkaline agents”) include monoethanolamine, diethanolamine, triethanolamine, 2-amino-2-methyl-1-propanol, 2-amino Alkanolamine such as 2-methyl-1,3-propanediol, isopropanolamine and diisopropanolamine. Among these, monoethanolamine, diethanolamine, triethanolamine, isopropanolamine, and diisopropanolamine are preferred.
Other alkaline agents may be used singly or in combination of two or more.
The content of the other alkaline agents is preferably 3-8% by mass, more preferably 4-6% by mass, relative to the total mass of the liquid detergent.
In addition, you may use another alkaline agent as a pH adjuster.

If the liquid detergent contains a higher fatty acid or its salt, the antifoaming property will be enhanced. The term "antifoaming" refers to the property of suppressing foaming when washing with a liquid detergent, specifically when the liquid detergent is diluted with tap water or the like.
Higher fatty acids or salts thereof include single fatty acids or salts thereof such as caprylic acid, capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, isostearic acid, hydroxystearic acid, oleic acid, behenic acid; Fatty acids, mixed fatty acids such as beef tallow fatty acids, salts thereof, and the like are included.
Preferred higher fatty acids are lauric acid, myristic acid, palmitic acid and coconut oil fatty acid, and more preferred is coconut oil fatty acid.
Salt forms of higher fatty acids include, for example, alkali metal salts (sodium salts, potassium salts, etc.), alkaline earth metal salts (magnesium salts, etc.), and alkanolamine salts (monoethanolamine salts, diethanolamine salts, etc.). .
Higher fatty acids or salts thereof may be used singly or in combination of two or more.
The content of the higher fatty acid or its salt is preferably 0.5 to 10% by mass, more preferably 2 to 8% by mass, still more preferably 3 to 5% by mass, relative to the total mass of the liquid detergent. If the content of the higher fatty acid or salt thereof is at least the above lower limit, antifoaming properties are enhanced. If the content of the higher fatty acid or salt thereof is equal to or less than the above upper limit, liquid stability at low temperatures is improved.

Examples of antiseptics include 2-bromo-2-nitropropane-1,3-diol, 3-iodopropynylbutylcarbamate, zinc pyrithione, sodium pyrithione, octylisothiazolin-3-one, 1,2-benzisothiazolin-3-one. (BIT), 5-chloro-2-methylisothiazolin-3-one (CMIT), 2-methylisothiazolin-3-one (MIT), ethoxylated cocoamine, octanediol, benzyl alcohol, phenoxyethanol, sodium benzoate, and the like. be done.
The preservatives may be used singly or in combination of two or more.
The content of the preservative is preferably 0.001 to 2% by mass with respect to the total mass of the liquid detergent.

If the liquid detergent contains an antioxidant, oxygen absorption in the headspace of the container containing the liquid detergent can be suppressed. In addition, fading and discoloration due to light and heat can be suppressed.
Examples of antioxidants include monophenolic antioxidants such as dibutylhydroxytoluene and butylhydroxyanisole; bisphenolic antioxidants such as 2,2′-methylenebis(4-methyl-6-t-butylphenol; dl-α -polymeric phenolic antioxidants such as tocopherol, etc. Among these, monophenolic antioxidants and polymeric antioxidants are preferable.Among the monophenolic antioxidants, dibutylhydroxytoluene Among the polymeric phenolic antioxidants, dl-α-tocopherol is particularly preferred.
An antioxidant may be used individually by 1 type, and 2 or more types may be combined and used.
The content of the antioxidant is preferably 0.01-2% by mass with respect to the total mass of the liquid detergent.

If the liquid detergent contains an inorganic reducing agent, fading and discoloration due to light or heat can be suppressed.
Examples of the inorganic reducing agent include sulfites such as sodium sulfite and potassium sulfite; pyrosulfites such as sodium pyrosulfite and potassium pyrosulfite; and bisulfites such as sodium hydrogensulfite and potassium hydrogensulfite. Among these, sodium sulfite is preferable from the viewpoint of excellent liquid stability.
An inorganic reducing agent may be used individually by 1 type, and may be used in combination of 2 or more type.
The content of the inorganic reducing agent is preferably 0.01 to 3% by mass, more preferably 0.02 to 1% by mass, and even more preferably 0.05 to 0.5% by mass, relative to the total mass of the liquid detergent. . If the content of the inorganic reducing agent is at least the above lower limit, the effect of suppressing coloration due to light can be sufficiently obtained, and if it is at most the above upper limit, the liquid stability is enhanced.

Enzyme stabilizers include, for example, boric acid, borax, formic acid or salts thereof, lactic acid or salts thereof, calcium salts such as calcium chloride and calcium sulfate.
An enzyme stabilizer may be used individually by 1 type, and may be used in combination of 2 or more types.
The content of the enzyme stabilizer is preferably 2% by mass or less with respect to the total mass of the liquid detergent.

Examples of the texture improver include silicones such as dimethylsilicone, polyether-modified silicone and amino-modified silicone.
The texture improver may be used singly or in combination of two or more.
The content of the texture improver is preferably 5% by mass or less with respect to the total mass of the liquid detergent.

Examples of dye transfer inhibitors include polyvinylpyrrolidone, carboxymethylcellulose, and polyalkyleneamine.
The dye transfer inhibitor may be used singly or in combination of two or more.
The content of the dye transfer inhibitor is preferably 3% by mass or less with respect to the total mass of the liquid detergent.

As the anti-soil redeposition agent other than the component (E) (hereinafter also referred to as "other anti-soil redeposition agent"), for example, at least one repeating unit selected from the group consisting of alkylene terephthalate units and alkylene isophthalate units and , and at least one repeating unit selected from the group consisting of oxyalkylene units and polyoxyalkylene units. Specific examples of such water-soluble polymers include the trade name “TexCare SRN-100” (manufactured by Clariant, weight average molecular weight 2000 to 3000), the trade name “TexCare SRN-300” (manufactured by Clariant, weight average molecular weight 7000), trade name “Repel-O-Tex Crystal” (manufactured by Rhodia), trade name “Repel-O-Tex QC” (manufactured by Rhodia), and the like. Among these, TexCare SRN-100 is preferred because of its high solubility in water and excellent liquid stability. Further, from the viewpoint of excellent handleability, it is preferable to use TexCare SRN-170 (manufactured by Clariant Co., Ltd.), which is commercially available as a 70% aqueous solution of TexCare SRN-100, as another anti-soil redeposition agent.
Other anti-soil redeposition agents may be used singly or in combination of two or more.
The content of other anti-soil redeposition agents is preferably 0.01 to 5% by mass with respect to the total mass of the liquid detergent.

The coloring agent is not particularly limited, and examples thereof include dyes described in "Legal Dyes Handbook" (Japan Cosmetic Industry Association) and those chemically modified with a water-soluble polymer or the like at the end of the chromophore structure. be done. Specifically, C.I. I. Acid Red 138, C.I. I. Acid Red 260, C.I. I. Acid Red 106, Acid Yellow 203 (Yellow No. 203), Acid Blue 9, Blue No. 1, Blue No. 205, Green No. 3, Levanyl® Violet (Levanyl® Violet), Liquitint® BLUE SE (Liquitint® Blue SE), Liquitint® BLUE HP (Liquitint® Blue HP), Liquitint® BLUE MC (Liquitint® Blue MC), Liquitint® VIOLET CT (Liquitint® Violet CT), Liquitint® VIOLET LS (Liquitint® Violet LS), Liquitint® VIOLET DD (Liquitint® Violet DD), Liquitint® ) GREEN SA (Liquitint (Registered Trademark) Green SA), Liquitint (Registered Trademark) Bright Yellow (Liquitint (Registered Trademark) Bright Yellow), Liquitint (Registered Trademark) YELLOW SY (Liquitint (Registered Trademark) Yellow SY), Liquitint (Registered Trademark) Trademark) YELLOW LP (Liquitint (registered trademark) yellow LP), Liquitint (registered trademark) BRILLIANT ORANGE (Liquitint (registered trademark) brilliant orange), Liquitint (registered trademark) PINK AL (Liquitint (registered trademark) pink AL), Liquitint (registered trademark) RED ST (Liquitint® Red ST), Liquitint® RED MX (Liquitint® Red MX), C.I. I. 77007 (Pigment Blue 29, L-280 BLUE U), C.I. I. 74160 (Pigment Blue 15), C.I. I. 77346 (Pigment Blue 28), C.I. I. 77343 (Pigment Blue 36), C.I. I. 74260 (Pigment Green 7), C.I. I. 74265 (Pigment Green 36), WA-S Color Green, C.I. I. 21090 (Pigment Yellow 12, Yellow No. 205), C.I. I. 56110 (Pigment Red 254), C.I. I. general-purpose dyes and pigments such as 12490 (Pigment Red 5), Labracor 040 (F) Red, and PIGMOSOL (registered trademark); In this specification, "C.I." is an abbreviation for color index.
Colorants may be used singly or in combination of two or more.
The content of the colorant is preferably 0.00005 to 1.0% by mass, more preferably 0.00005 to 0.01% by mass, relative to the total mass of the liquid detergent. If the content of the coloring agent is at least the above lower limit value, the liquid detergent can be sufficiently colored, and if it is at most the above upper limit value, pigmentation on the object to be washed is less likely to occur, resulting in excellent dispersion stability. It becomes easy to obtain a liquid detergent.

Examples of emulsifying agents include polystyrene emulsions and polyvinyl acetate emulsions, and usually emulsions having a solid content of 30 to 50% by mass are preferably used. Specific examples include polystyrene emulsion (trade name: Saibinol (registered trademark) RPX-196 PE-3, solid content 40% by mass, manufactured by Saiden Chemical Co., Ltd.), Opulyn 301, Acusol OP 301, and the like.
The emulsifying agents may be used singly or in combination of two or more.
The content of the emulsifying agent is preferably 0.001-0.5% by mass with respect to the total mass of the liquid detergent.

As a flavoring agent, for example, Kagaku Kogyo Nippousha, 1996, Genichi Indo, "Synthetic Perfume, Chemistry and Product Knowledge"; Montclair, 1969; J. published by STEFFEN ARCTANDER, "Perfume and Flavor Chemicals". More specific examples include synthetic fragrances, natural fragrances derived from animals or plants, mixed fragrances containing natural and/or synthetic fragrances, and fragrance ingredients described in, for example, JP-A-2002-146399.
The flavoring agent may be formulated as a capsule fragrance encased in a capsule formed of a polymer compound.
Flavoring agents may be used singly or in combination of two or more.
The content of the flavoring agent is preferably 0.01 to 2% by mass with respect to the total mass of the liquid detergent.
In addition, the total amount of all components constituting the liquid detergent does not exceed 100% by mass.

<Physical properties>
(pH)
The pH of the liquid detergent at 25° C. is 9 or higher, preferably 9-12, more preferably 9-11, and even more preferably 9-10. If the pH of the liquid detergent is equal to or higher than the above lower limit, sebum stains, which are the cause of yellowing on textiles, are hydrolyzed and easily removed from the textiles, increasing the detergency against yellowing of textiles. If the pH of the liquid detergent is equal to or less than the above upper limit, damage to textile products such as clothes can be prevented.
The pH of the liquid detergent can be adjusted by adding a pH adjuster, if necessary.
The pH of the liquid detergent is a value measured with a pH meter (manufactured by Toa DKK Co., Ltd., product name "HM-30G") at 25°C.

<Manufacturing method>
The method for producing the liquid detergent is not particularly limited, and the liquid detergent can be produced according to a conventional method.
For example, the liquid detergent may contain the components (A), (B), and part of (C), and if necessary, components (D), (E), (F), and pH It can be produced by mixing one or more optional components other than the adjuster, adjusting the pH to a predetermined value using a pH adjuster as necessary, and then mixing the remaining component (C).

<How to use>
Liquid detergents can be used, for example, by putting the liquid detergent into the liquid detergent inlet of the washing machine and then running the washing machine, or by putting the liquid detergent into the water together with the object to be washed during washing. a method of immersing the object to be washed in a cleaning liquid prepared by previously dissolving a liquid detergent in water; a method of directly applying the liquid detergent to the object to be washed and leaving it for, for example, 3 minutes to 24 hours; and the like.

It is also preferable to use a washing machine equipped with an automatic detergent dispenser, which has been put into practical use in recent years. An automatic detergent dispenser is a device that automatically injects liquid detergent from a tank containing liquid detergent into the washing tub via a filter for dust removal provided at the bottom of the tank and an injection pipe. is. A metering means such as a syringe pump is provided in the middle of the loading pipe so that a fixed amount set according to the amount of laundry can be transferred from the tank to the washing tub.
Using an automatic detergent dosing device not only saves you the trouble of weighing, but also prevents the liquid detergent from sticking to your hands or spilling out and staining the washing machine and its surroundings.

It is also preferable to use an automatic dispenser that can automatically dispense a predetermined amount of liquid. Even when an automatic dispenser is used, even a small amount of the liquid detergent can be measured accurately, so it is easy to exhibit sufficient detergency and waste due to overuse can be avoided, which is preferable.
Some automatic dispensers on the market use an infrared sensor or the like to automatically dispense without touching a switch or the like. If such an automatic dispenser is used, the amount of liquid detergent can be measured simply by holding out the container held in one hand, which greatly reduces the burden on the user.

Moreover, when using an automatic dispenser, it is also preferable to receive the liquid detergent discharged into a soft container and to put the soft container into the washing machine as it is. As a result, the entire amount of the discharged liquid cleaning agent can be reliably dissolved in the cleaning liquid.
Examples of the material of the soft container that can be thrown into the washing machine as it is include silicone resin, polyvinyl chloride, elastomer, soft polyester, soft polypropylene, and polyurethane.

Examples of articles to be washed include clothing (clothes), cloths, towels, sheets, and textile products such as curtains. The material of the textile product is not particularly limited, and may be any of natural fibers such as cotton, silk and wool, and chemical fibers such as polyester and polyamide.
When the liquid detergent is used by dissolving it in water, it is preferable to dilute it, for example, 5 to 6000 times (by volume).
The bath ratio (mass of washing liquid during washing/mass of clothes), which is the amount of water per amount of clothes, is preferably 5 or more for a drum-type washing machine, and 10 or more for a vertical washing machine.
Liquid detergents are suitable as detergents for textiles. In particular, if the liquid detergent contains an uncoated component (A), and the particle size of the component (A) is less than 200 μm, preferably less than 100 μm, the washing machine or automatic washing machine equipped with an automatic detergent injection function can be used. Suitable for use in dispensers.

<Effect>
The liquid detergent of the present invention described above contains the components (A), (B) and (C), and has a pH of 9 or more at 25°C, so it has detergency against yellowing of textile products. Excellent for
In particular, when the liquid detergent contains component (E), the detergency against yellowing of textiles is further enhanced.
Moreover, if the liquid cleansing agent contains the (D) component, the detergency against sebum stains is further enhanced.

[EXAMPLES] Hereafter, although an Example is shown and this invention is demonstrated in detail, this invention is not limited by the following description.
The raw materials used in this example are as follows.

"Raw materials used"
(A) The compound shown below was used as a component.
· A-1: 4,4′-bis(2-sulfostyryl)biphenyl disodium salt (manufactured by BASF, trade name “Tinopal (registered trademark) CBS-X”).
· A-2: 4,4'-bis((4-amino-6-morpholino-1,3,5-triazinyl-2)amino)stilbene-2,2'-disulfonate (manufactured by ARCHROMA, trade name "Leucophor® DMA-X Conc").

(B) The compound shown below was used as a component.
· B-1: Polyoxyethylene alkyl ether (manufactured by Lion Specialty Chemicals Co., Ltd., trade name "Rheox CL-70", in general formula (1), R ¹¹ is a linear alkyl group having 12 carbon atoms ( C12) and a linear alkyl group having ¹⁴ carbon atoms (C14) (C12:C14 = 75:25 in mass ratio), the carbon atom of R11 bonded to the oxygen atom is a primary carbon atom, Compound (1), wherein ^R12 is a hydrogen atom, s is 7, t is 0, and u is 0).
B-2: A straight-chain alkylbenzenesulfonic acid having an alkyl group having 10 to 14 carbon atoms (manufactured by Lion Specialty Chemicals Co., Ltd., trade name “Lipon (registered trademark) LH-200”).
B-3: polyoxyalkylene alkyl ether sulfate (in the general formula (3), R ¹⁵ is a linear alkyl group having 12 carbon atoms (C12) and a linear alkyl group having 14 carbon atoms (C14) (C12:C14 = 75:25 in mass ratio), m is 1, n is 0, Ma is sodium, and the ratio of compounds with m = 0 and n = 0 to all AES is 43 % by mass of compound (3), which was synthesized by the following synthesis method).
・B-4: IOS. The content of sodium internal olefin sulfonate and hydroxy form synthesized by the following synthesis method is 85% by mass. Synthesized by the synthesis method described below.
B-5: Natural alcohol (mass ratio of primary alcohol having 12 carbon atoms/primary alcohol having 14 carbon atoms = 7/3), 8 mol ethylene oxide, 2 mol propylene oxide, 8 mol ethylene oxide A nonionic surfactant obtained by block addition in the order of
B-1 and B-5 are nonionic surfactants, and B-2 to B-4 are non-soap anionic surfactants.

(Synthesis of B-3)
In an autoclave with a capacity of 4 L, 400 g of CO1270 alcohol manufactured by Procter & Gamble Co. as a raw material alcohol (a mixture of alcohol having 12 carbon atoms and alcohol having 14 carbon atoms in a mass ratio of 75/25), and a catalyst for reaction 0.8 g of a potassium hydroxide catalyst was added as a catalyst, and after the inside of the autoclave was replaced with nitrogen, the temperature was raised while stirring.
Subsequently, while maintaining the temperature at 180° C. and the pressure at 0.3 MPa or less, 91 g of ethylene oxide was introduced and reacted to obtain an alcohol ethoxylate.
Gas chromatograph: GC-5890 manufactured by Hewlett-Packard, detector: flame ionization detector (FID), column: Ultra-1 (manufactured by HP, L25 m × φ0.2 mm × T0.11 μm), As a result of analysis using , the obtained alcohol ethoxylate had an average added mole number of ethylene oxide of 1.0. In addition, the amount of the compound to which ethylene oxide was not added (the one that finally became the component (b-0)) was 43% by mass with respect to the entire alcohol ethoxylate obtained.
Next, 237 g of the alcohol ethoxylate obtained above was placed in a 500 mL flask equipped with a stirrer and purged with nitrogen. After completion of the dropwise addition, stirring was continued for 1 hour (sulfation reaction) to obtain polyoxyethylene alkyl ether sulfuric acid. Then, this was neutralized with an aqueous sodium hydroxide solution to obtain B-3.

(Synthesis of B-4)
An internal olefin mixture containing a total of 26% by mass of double bonds at the 2-position, a cis/trans isomer mass ratio of 27/73, and a paraffin component of 2.0% by mass. used as This internal olefin consists of 3% by mass of C14 (the number after C is the same as the number of carbon atoms) or less, 33% by mass of C15, 39% by mass of C16, 24% by mass of C17, and 1% by mass of C18 or more. It is an internal olefin mixture. Using this internal olefin mixture, a glass thin-film sulfonation apparatus with an inner diameter of 6 mmφ and a length of 1.2 m was used to convert the reactor temperature to 10 with nitrogen _- diluted SO gas (SO concentration: ₅ % by volume). ° C. and a SO ₃ /internal olefin molar ratio of 1.1, a sulfonation reaction was carried out in a conventional manner to obtain an internal olefin sulfonic acid. The resulting reaction product, internal olefinsulfonic acid, was aged at 5°C for 1 hour, then added with 1.11 mol (relative to internal olefinsulfonic acid) of 15% sodium hydroxide aqueous solution, and heated at 30°C for 30 minutes. A neutralization reaction was carried out by stirring to obtain a neutralized product. The neutralized product was then heated in an autoclave at 160° C. for 40 minutes and hydrolyzed to give B-4.

(C) The compound shown below was used as a component.
· C-1: Ethanol (manufactured by Nippon Alcohol Sales Co., Ltd., trade name "specific alcohol 95 degree synthesis").
· C-2: Propylene glycol (manufactured by Dow Chemical Company, trade name “propylene glycol”).
· C-3: water (ion-exchanged water).
· C-4: glycerin (manufactured by FUJIFILM Wako Pure Chemical Industries, Ltd., trade name “glycerin”).

(D) The compound shown below was used as a component.
· D-1: Sodium carbonate (manufactured by Soda Ash Japan Co., Ltd., trade name "granular ash").

(E) The compound shown below was used as a component.
E-1: Alkylene oxide adduct of polyalkyleneimine (manufactured by BASF, trade name “Sokalan HP20”, compound in which R ²² is ethylene group and h is 20 in general formula (7)).
E-2: Copolymer sodium salt of olefin and maleic acid (manufactured by BASF, trade name "Sokalan CP9", weight average molecular weight 12000).

(F) The compound shown below was used as a component.
· F-1: Bacterial cellulose (manufactured by CPKelco US, trade name “CELLULON (registered trademark) R27”, water content 80% by mass).
The moisture content of F-1 was measured using an automatic moisture measuring device (manufactured by Hiranuma Sangyo Co., Ltd., product name "AQUACOUNTER AQV-2200").

The compounds shown below were used as optional components.
- Monoethanolamine: manufactured by Nippon Shokubai Co., Ltd., trade name "monoethanolamine".
- Coconut fatty acid: manufactured by NOF Corporation, trade name "coconut fatty acid".
· Citric acid: manufactured by Fuso Gaku Kogyo Co., Ltd., trade name "anhydrous citric acid".
Diclosan: 4,4′-dichloro-2-hydroxydiphenyl ether (manufactured by BASF, trade name “TINOSAN (registered trademark) HP100”).
- Enzyme: Mixed preparation (liquid) of protease and amylase (manufactured by Novozymes Japan, trade name "Medley Core 210L").
- Sodium sulfite: manufactured by Mitsui Chemicals, Inc., trade name "sodium sulfite".
Perfume: Perfume composition A described in Tables 11 to 18 of JP-A-2002-146399.
- Polyethyleneimine: manufactured by Nippon Shokubai Co., Ltd., trade name "Epomin").

"Measurement/evaluation method"
(Evaluation of detergency against yellowing)
A cotton knit (manufactured by Tanigashira Shoten) cut to 5 cm×5 cm was prepared as a cloth for evaluation.
Further, a mixed stain was prepared by mixing tripalmitin, palmitic acid, cholesterol, hexadecyl palmitate, and squalene as yellowing components at a ratio of 35:28:2:20:15 (mass ratio).
250 μL of a solution obtained by diluting the mixed stain 5-fold with chloroform was dropped on a cloth for evaluation, and the cloth for evaluation was dried at 80° C. for 5 days to obtain a stained cloth with yellow stain.
A Terg-O-Tometer (manufactured by UNITED STATES TESTING) was used as a cleaning tester.
The cleaning liquid was prepared by adding the liquid cleaning composition of each example to 900 mL of tap water (15° C., 3° DH) so as to make 333 ppm by mass, and stirring for 30 seconds.

Put the cleaning liquid and 10 pieces of the above-mentioned soiled cloth into a cleaning tester, and wash at 120 rpm for 10 minutes, rinse for 3 minutes, and dehydrate for 1 time according to the bath ratio (wash water/total mass of washed items) of 20 times. A minute washing operation was performed. After washing, the soiled cloth was allowed to dry naturally.
The b ^* value of the soiled cloth before washing and the b ^* value of the soiled cloth after air drying were each measured with a spectral color difference meter (manufactured by Nippon Denshoku Industries Co., Ltd., product name “SE2000”), and the following The detergency against yellowing of soiled cloth was determined by the formula (i).
Detergency against yellowing = (b ^{* value of dirty cloth before washing) - (b *} ^value of dirty cloth after natural drying) (i)

Detergency against yellowing was calculated for 10 soiled cloths, and the average value was used for evaluation based on the following evaluation criteria. ⊚, ◯, and △ were regarded as passed.
"Evaluation criteria"
A: Detergency against yellowing is 4.1 or more (no yellowing was observed).
◯: Detergency against yellowing is 4.0 or more and less than 4.1 (slight yellowing was observed).
Δ: Detergency against yellowing is 3.9 or more and less than 4.0 (clear yellowing was observed).
x: Detergency against yellowing is less than 3.9 (remarkable yellowing was observed).

"Examples 1 to 12, Comparative Examples 1 and 2"
In a 500 mL beaker, according to the formulations in Tables 1 and 2, (A) component, (B) component, C-1, C-2 and C-4, part of C-3, (E) The ingredients and optional ingredients other than the enzyme were added and sufficiently stirred with a three-one motor stirrer (manufactured by AS ONE Co., Ltd.) to obtain a mixture. For convenience, the sum of the amount of C-3 used for preparing the mixture and the amount of water contained in F-1 is indicated as the amount of C-3 (% by mass) in Tables 1 and 2. . Therefore, the input amount of C-3 here is the amount obtained by subtracting the amount of water contained in F-1 from the blending amount of C-3 described in Tables 1 and 2.
Next, the component (F) was added to the mixture and thoroughly stirred, and then the component (D) was added and thoroughly stirred. After that, the enzyme was added, and the remaining C-3 was added so that the total amount was 100% by mass to obtain a liquid detergent.
In the liquid detergents obtained in Examples 1 to 12 and Comparative Example 2, part of the component (D) existed in a solid state.
The pH of the obtained liquid detergent at 25° C. was measured using a pH meter (manufactured by Toa DKK Co., Ltd., product name “HM-30G”).
Detergency against yellowing was evaluated for the obtained liquid detergent. These results are shown in Tables 1 and 2.

In Tables 1 and 2, all compounding amounts (% by mass) of each component are percentages with respect to the total mass of the liquid cleaning agent, and represent values in terms of pure content, unless otherwise specified. The numerical value in parentheses in the compounding amount (% by mass) of F-1 is the amount as a physical form (preparation). The amount (% by mass) of C-3 also includes the amount (% by mass) of water contained in F-1. In addition, a blank for the blending amount means that the component is not blended (the blending amount is 0% by mass).
Also, the "water/organic solvent ratio" is the mass ratio of water to the mass of the water-miscible organic solvent. "Nonionic/anionic ratio" is the weight ratio of nonionic surfactant to weight of non-soap anionic surfactant. "A/E ratio" is the weight ratio of component (A) to the weight of component (E). "A+E" is the total content (% by mass) of the components (A) and (E) relative to the total mass of the liquid detergent.

As is clear from Tables 1 and 2, the liquid detergent obtained in each example was excellent in detergency against yellowing. In particular, the liquid detergents obtained in Examples 1 to 7 and 12 were excellent in detergency against yellowing.
On the other hand, the liquid detergent obtained in Comparative Example 1 having a pH of 7 and the liquid detergent obtained in Comparative Example 2 containing no component (A) were inferior in detergency against yellowing.

The liquid detergent of the present invention has excellent detergency against yellowing of textile products, and is useful as a detergent for textile products.

Claims

(A) component: a fluorescent brightener;
(B) component: a surfactant;
(C) component: one or more selected from water and water-miscible organic solvents;
and having a pH of 9 or higher at 25°C.
(D) Component: The liquid detergent according to claim 1, further comprising an inorganic alkaline agent.
(E) component: The liquid detergent according to claim 1 or 2, further comprising a dispersant.
(F) Component: The liquid detergent according to claim 1 or 2, further comprising a structuring agent.
The liquid detergent according to claim 1 or 2, which is for textile products.