JP2010241891A - Liquid detergent composition - Google Patents

Abstract

The present invention provides a liquid detergent composition capable of obtaining an excellent softening effect using a polyether-modified silicone compound having a high HLB value and excellent in compounding stability.
(A) A polyether-modified silicone compound having an HLB value of 9 to 15 and a modification rate of 0.1 to 12 mol%, (b) a specific quaternary ammonium salt and a specific tertiary amine, or a compound thereof A liquid detergent composition comprising a compound selected from salts and a surfactant other than (c) and (b).
[Selection figure] None

Description

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

  The cleaning agent for textile products is intended for removal of human-derived sebum, exogenous mud, carbon, food stains, and the like attached to the textile product. In general, the cleaning agent is mainly composed of a surfactant for lowering the interfacial tension on the fiber surface, detaching the dirt and dispersing it in the washing liquid, an alkaline agent for increasing the pH of the washing liquid and decomposing the dirt, Metal ion sequestering agent for the purpose of capturing hardness components in tap water, recontamination preventive agent that does not reattach soil dispersed in washing liquid to clothing, and other auxiliary components such as enzymes, fragrances, preservatives and colorants In the case of a liquid detergent, it is composed of an optional component and an organic solvent or water as a solvent. However, problems such as a change in texture and shrinkage such as a decrease in flexibility of the fiber product and a crease occur as the number of times of washing is increased. These problems have a great influence on the washing of clothing, especially among textile products. The causes include fuzz due to deterioration of the fiber surface, outflow of oil or the like in the fiber, or increase in hydrogen bonds between the fibers. In order to solve these problems, it is known to add a cationic surfactant or a silicone compound, which is a flexible substrate, to the cleaning agent.

  Silicone compounds require efficient adhesion to fibers, while liquid detergents require blending stability. Therefore, silicone modified with a specific organic group is often used. As the modified silicone, carboxymethyl-modified silicone, polyether-modified silicone, and amino-modified silicone are known. For example, Patent Documents 1 to 5 disclose a detergent composition containing polyether-modified silicone that prevents shrinkage of a fiber product or imparts flexibility to the fiber product.

JP 11-293297 A Japanese Patent Laid-Open No. 11-293298 JP 11-293299 A Japanese Patent Laid-Open No. 2-145862 JP 2006-225635 A

  In the above-mentioned patent documents, most of them use a low HLB silicone, and especially when blended with an aqueous liquid detergent composition, it is difficult to stabilize in the composition, and therefore the composition is limited. Often. On the other hand, when using a silicone with a high HLB value, stability in the detergent is obtained, but in the washing process with this detergent, the silicone is present in the washing liquid in the aqueous medium rather than adsorbing to the fibers. Since it is considered to be more stable, most of it flows as washing waste water, and it becomes difficult to impart sufficient silicone effects to the textile product.

  An object of the present invention is to provide a liquid detergent composition that exhibits an excellent softening effect in a liquid detergent composition using a polyether-modified silicone compound having a high HLB value.

  The present invention relates to (a) a polyether-modified silicone compound having an HLB value of 9 to 15 and a modification rate of 0.1 to 12 mol% (hereinafter referred to as component (a)), (b) (b1) nitrogen atom 1 or 2 of the groups bonded to each other is a hydrocarbon group having 6 to 30 carbon atoms which may be interrupted by ether, amide or ester, and the remaining group bonded to the nitrogen atom is 1 to 4 carbon atoms. And a quaternary ammonium salt which is a hydroxyalkyl group, and (b2) carbon atoms having 6 to 30 carbon atoms in which one or two of the groups bonded to the nitrogen atom may be interrupted by an ether, amide or ester A compound selected from tertiary amines or salts thereof which are hydrogen groups and the remaining group bonded to the nitrogen atom is a hydrocarbon group having 1 to 4 carbon atoms, or a hydroxyalkyl group [component (b) Toi ], And (c) (b) a surfactant other than the component [hereinafter relates to a liquid detergent composition containing a], that component (c).

  ADVANTAGE OF THE INVENTION According to this invention, the liquid detergent composition from which the outstanding softening effect is acquired using the polyether modified silicone compound of a high HLB value is provided. Since the liquid detergent composition of the present invention has excellent blending stability, it can be designed with a wide range of compositions.

<(A) component>
In developing a liquid detergent composition, the present inventors have studied a silicone compound that can be stably blended in a liquid detergent composition and has excellent adsorptivity to fibers. As described above, a polyether-modified silicone compound having a high HLB value is excellent in blending stability in an aqueous liquid detergent composition, but has poor adsorptivity to fibers and is difficult to achieve both. However, the present inventors have found that the adsorptivity to the fibers is improved by setting the modification rate of the polyether chain in the silicone chain within a specific range even with a high HLB value. That is, the number of oxyalkylene units constituting the polyether chain while lowering the graft ratio (recognized as the modification rate) of the polyether chain (for example, polyethylene oxide alkyl ether chain) grafted to the silicone chain. Preferably, the method of increasing the HLB value by increasing the number of moles of polyethylene oxide added to the polyethylene oxide alkyl ether chain has been found to improve the adsorptivity to the fiber, leading to the present invention.

  The component (a) is preferably a polyether-modified silicone represented by the following general formula (a-I).

[Wherein, R ^1a may be the same or different and each represents an alkyl group having 1 to 4 carbon atoms, and p and q are p: q = 1000: 1 to 7.3: 1, X ¹ And X ² may be the same or different and each represents a hydroxy group, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group. R ^2a represents a hydrogen atom or an alkyl or acyl group having 1 to 4 carbon atoms, a represents a number of 1 to 4, b represents a number of 10 to 100, and c represents a number of 0 to 50. / Indicates that each of the structural units to which p and q are attached and the structural unit to which b and c are attached may be random or block. ]

In general formula (a-I), R ^1a is preferably a methyl group. X ¹ and X ² are preferably an alkyl group having 1 to 3 carbon atoms, particularly a methyl group. R ^2a is preferably a hydrogen atom, an alkoxy group having 1 to 4 carbon atoms or an alkyloxy group having 1 to 3 carbon atoms, particularly a hydrogen atom. a is preferably a number from 1 to 3, b is preferably from 10 to 50, and c is preferably from 0 to 3.

  The range of the HLB value of the component (a) is 9 or more, preferably 9.5 or more, and 15 or less, preferably 14 or less. When the water content in the liquid detergent composition is 10% by mass or more, it is preferably 9.5 to 15. The HLB value is not less than the lower limit value from the viewpoint of blending stability of the liquid detergent composition, and is not more than the upper limit value from the viewpoint of adhesion of silicone to fibers.

The HLB value of the component (a) is determined by the following formula by titrating an ethanol solution (0.5 g / 5 ml) of a polyether-modified silicone compound with a 2% aqueous phenol solution, with the turbidity point as the end point (Surfactant Handbook, West (See Ichiro et al., Sangyo Tosho Co., Ltd., 1960, page 324). The compound of the below-mentioned Example is HLB measured by this method.
HLB value = 0.89 × phenol aqueous solution titer (ml) +1.11

The modification rate in the component (a) is a polyether modification unit in the silicone compound (for example, -Si (R ^1a ) [(CH ₂ ) _a -O [(C ₂ in the compound of the general formula (aI)). H ₄ O) _b / (C ₃ H ₆ O) _c —R ^2b ] —)). In the compound of the general formula (a-I), p and q in the formula Based on the above, the modification rate (mol%) is obtained by q / (p + q) × 100. The ratio of the polyether-modified unit to the siloxane unit (the ratio of p and q in the general formula (a-1)) was determined by diluting the polyether-modified silicone compound with deuterated chloroform and measuring ¹ H-NMR. The compounds of the examples described later have the modification rate determined by NMR measured by this method. (A) The modification | denaturation rate of a component is 0.5-12 mol%, Furthermore, 1-12 mol% is preferable. Moreover, when the water content of a liquid detergent composition is 10 mass% or more, from a viewpoint of mixing | blending stability, the modification rate is 0.5-12 mol%, Furthermore, 3-12 mol% is preferable.

(A) a kinematic viscosity of ether-modified silicone of the component, 25 ° C. at 10,000 mm ² / s or less, further 5,000mm is preferably from ² / s, the lower limit is 10 mm ² / s or more, further 20 mm ² / s or more Is preferred.

<(B) component>
(B) As a component, the compound represented by the following general formula (b-I), the compound represented by the following general formula (b-II), and the compound represented by the following general formula (b-II) One or more compounds selected from salts are preferred.

[In the formula, R ^1b is a hydrocarbon group having 8 to 36 carbon atoms, preferably 10 to 24, particularly preferably 12 to 20 carbon atoms, preferably an alkyl group, and R ^2b is 1 to 5 carbon atoms, preferably 1 carbon atom. And X is a group selected from —COO—, —CONR ^6b —, —OCO—, and —NR ^6b CO—. R ^6b is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, preferably a hydrogen atom. R ^3b and R ^4b each independently represents an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group, or R ^1b —X—R ^2b —, R ^5b represents an alkyl group having 1 to 3 carbon atoms or a hydroxyalkyl group; ^- anion is preferably a halogen ion, sulfate ion, phosphate ion, alkyl sulfate ion having 1 to 3 carbon atoms, fatty acid ion having 1 to 12 carbon atoms, particularly preferably a halogen ion, sulfate ion, carbon atoms 1 to 3 alkyl sulfate ions. ]

  The compound represented by the formula (b-I) and / or the compound represented by the general formula (b-II) can be obtained by the method described in paragraphs 0008 to 0020 of JP-A No. 05-230001. it can.

  The component (b) is preferably a compound represented by the general formula (b-II) and a salt thereof, more preferably derived from a fatty acid having 12 to 22 carbon atoms, in order to further improve the adhesion of the component (a). Fatty acid ester propyldimethylamine and fatty acid amidopropyldimethylamine. Specifically, laurylamidopropyldimethylamine, myristylamidopropyldimethylamine, palmitylamidopropyldimethylamine, stearylamidopropyldimethylamine, behenylamidopropyldimethylamine, oleylamidopropyldimethylamine, palmitylamidopropyldiethanolamine, stearylamide Aliphatic amide alkyl tertiary amines having 12 to 22 carbon atoms such as propyldiethanolamine and salts thereof, aliphatic ester alkyl tertiary amines having 12 to 22 carbon atoms such as palmitate ester propyldimethylamine and stearate ester propyldimethylamine Among them, aliphatic amidopropyldimethylamine is preferable, and myristylamidopropyldimethylamine is preferable. Palmityl amidopropyl dimethylamine, stearyl amidopropyl dimethylamine, behenyl dimethylamine, oleyl amidopropyl dimethylamine, and salts thereof preferably, particularly stearyl amidopropyl dimethylamine and salts thereof are preferred.

<(C) component>
The liquid detergent composition of the present invention contains a surfactant other than the component (b) [component (c)]. In order to improve the detergency, the component (c) is preferably a surfactant selected from anionic surfactants and nonionic surfactants as the main surfactant. Furthermore, it is preferable to use a nonionic surfactant as the main surfactant in order to increase flexibility.

  As an anionic surfactant, a linear alkylbenzene sulfonate having an alkyl chain having 10 to 18 carbon atoms, an alkyl sulfate ester salt having an alkyl chain having 10 to 18 carbon atoms, and an alkyl chain having 10 to 18 carbon atoms Alkali metal salts such as polyoxyalkylene alkyl ether sulfate salts and alpha sulfo fatty acid (carbon number 10 to 18) alkyl (for example, methyl) ester salts are preferable, and a small amount of beef tallow or palm-derived fatty acid salts may be blended.

  In addition to alkali metals such as sodium and potassium, alkaline earth metals such as magnesium and / or alkanolamines such as mono-, di-, and triethanolamine are used as counter ions for anionic surfactants. Is preferable because the liquid stability is improved. The content of the anionic surfactant in the composition is preferably 10% by mass or less, more preferably 5% by mass or less, and particularly preferably 1% by mass or less from the viewpoint of silicone adsorptivity.

As the nonionic surfactant, the following (1) to (4) can be used.
(1) It has an alkyl group derived from a linear primary alcohol or linear secondary alcohol having an average carbon number of 8 to 20, or an alkyl group or alkenyl group derived from a branched alcohol, and ethylene oxide (hereinafter referred to as EO). Polyoxyethylene alkyl or alkenyl ether added with 1 to 20 moles on average.
(2) Polyoxygen having an alkyl group or alkenyl group having an average carbon number of 8 to 20, and adding 1 to 15 mol of EO on average and 1 to 5 mol of propylene oxide (hereinafter referred to as PO) on average Alkylene alkyl or alkenyl ether. In this case, EO and PO may be either random addition or block addition.
(3) An alkyl polysaccharide surfactant represented by the following general formula (c-I).
_{^{R 1c - (OR 2c) i}} G j (c-I)
[Wherein R ^1c is a hydrocarbon group having 8 to 18 carbon atoms, preferably an alkyl group, R ^2c is an alkylene group having 2 to 4 carbon atoms, G is derived from a reducing sugar having 5 or 6 carbon atoms, preferably glucose. Residue, i is the number of average value 0-6, j shows the number of average value 1-10. ]
(4) Fatty acid alkanolamide, polyhydroxy fatty acid amide.

  In particular, it is preferable to contain the polyoxyalkylene alkyl ether of (1) and / or (2) in the liquid detergent composition of the present invention from the viewpoint of oily soil detergency.

  Further, the content of the nonionic surfactant in the composition is preferably 5 to 60% by mass, particularly preferably 10 to 50% by mass.

  As the other surfactant as component (c), an amphoteric surfactant may be blended from the viewpoint of the stability of the liquid and the ability to clean mud. As the amphoteric surfactant, alkylcarbobetaine, alkylsulfobetaine, alkylamidohydroxysulfobetaine, alkylamidoamine type betaine, alkylimidazoline type betaine and the like can be blended. When the amphoteric surfactant is blended, it is preferably contained at 10% by mass or less in the composition.

<Other ingredients>
Furthermore, the following components can be mix | blended with the liquid cleaning composition of this invention. Alkali metal hydroxides, silicates, carbonates such as sodium carbonate, and alkali agents such as alkanolamines 0.01 to 10% by mass; alcohols such as ethanol, glycols such as ethylene glycol and propylene glycol, para Toluenesulfonic acid, benzoate (also effective as a preservative) and urea and other thinning agents and solubilizers 0.01 to 30% by mass; phase adjustment of polyoxyalkylene benzyl ether, polyoxyalkylene phenyl ether, etc. Agent and detergency improver 0.01 to 10% by mass; nitrilotriacetate, ethylenediaminetetraacetate, iminodiacetate, diethylenetriaminepentaacetate, glycol etherdiaminetetraacetate, hydroxyethyliminodiacetate and triethylene Aminopolyacetates such as tetramine hexaacetate, malonic acid 0.1-20% by mass of metal ion scavenger such as succinic acid, diglycolic acid, malic acid, tartaric acid, citric acid and other salts; polyacrylic acid, polymaleic acid, carboxymethylcellulose, polyethylene glycol having an average molecular weight of 5000 or more, anhydrous Maleic acid-acrylic acid copolymer, maleic anhydride-diisobutylene copolymer, maleic anhydride-methyl vinyl ether copolymer, maleic anhydride-isobutylene copolymer, maleic anhydride-vinyl acetate copolymer, naphthalene sulfone Acid salt formalin condensate, and a recontamination preventive and dispersing agent such as a polymer described in claims 1 to 21 (page 1, column 3, line 5 to page 3, column 4, line 14) of JP-A-59-62614. 01 to 10% by mass; color transfer inhibitor such as polyvinylpyrrolidone 0.01 to 10% by mass; sodium percarbonate or Bleaching agents such as sodium borate 0.01 to 10% by mass; tetraacetylethylenediamine, general formulas (I-2), (I-3), (I-4), (I-5) of JP-A-6-316700 , (I-6), bleach activators such as bleach activators represented by (I-7) 0.01 to 10% by mass; enzymes such as amylase, protease, lipase and cellulase 0.001 to 2% by mass ; 0.001 to 2% by mass of enzyme stabilizers such as calcium chloride, calcium sulfate, formic acid, boric acid (boron compound); 0.001 to 1% by mass; silica, antifoaming agent such as silicone other than component (a) 0.01 to 2% by mass; butylhydroxytoluene, distyrenated cresol, sodium sulfite and sodium hydrogensulfite Antioxidant 0.01 to 2 wt%, such as helium, bluing agents; perfumes; antimicrobial preservative, and the like.

  The liquid detergent composition of the present invention comprises the above components (a), (b) and (c), an optional component and the remaining water. The liquid detergent composition of the present invention preferably contains 0.1 to 10% by mass, more preferably 0.1 to 5% by mass of component (a). Moreover, it is preferable to contain (b) component 0.1-10 mass%, and also 0.1-5 mass%. Moreover, it is preferable to contain (c) component 5-60 mass%, and also 10-50 mass%.

  The pH of the liquid detergent composition of the present invention is preferably 6 to 8 (20 ° C.), and the pH is preferably adjusted with an alkali agent or an acid agent. The pH is measured by the method described in JIS K3362: 1998. Alkaline agents include monoethanolamine, diethanolamine, triethanolamine, methylmonoethanolamine, dimethylethanolamine, alkanolamines such as 3-aminopropanol, sodium hydroxide, potassium hydroxide, sodium silicate, sodium carbonate, etc. Inorganic salts can be used, and at least one selected from monoethanolamine, sodium hydroxide, and potassium hydroxide is particularly preferable. As an acid agent, 1 or more types chosen from a sulfuric acid, hydrochloric acid, phosphoric acid, a C1-C12 fatty acid, and a C1-C3 alkyl sulfuric acid are preferable.

  The balance of the liquid detergent composition of the present invention is water, and the content of water is preferably 10% by mass or more, more preferably 15% by mass or more in the composition, and the upper limit is set by other components. However, it can be 80% by mass or less based on the size and amount of the container used as the final product. It is preferable to use ion-exchanged water from the viewpoint of storage stability.

  The viscosity at 20 ° C. of the liquid detergent composition of the present invention is preferably 5 to 500 mPa · s, more preferably 5 to 400 mPa · s, and still more preferably 5 to 300 mPa · s in terms of ease of handling. It is preferable to adjust so that it may become such a range with a viscosity modifier. The viscosity was measured using a B-type viscometer (manufactured by Tokyo Keiki Co., Ltd., VISCOMETER MODEL DVM-B) under the conditions of rotor number 1 or 2 and a rotational speed of 60 r / min for 60 seconds. Viscosity after a second. The liquid detergent composition of the present invention is suitable as a liquid detergent composition for textiles such as clothing.

Example 1 and Comparative Example 1
[Evaluation of softening effect]
(1) Preparation of test cloth pretreatment cloth 60 L of tap water was put into a fully automatic washing machine, and 3.0 kg of cotton knit cloth was put into this. Furthermore, 40 g of compact type powder detergent (Attack, Kao Corporation, manufactured in May 2008) was added and processed. This treatment was repeated 5 times, and further rinsed with running water in a two-tank washing machine, and then dehydrated and dried for 5 minutes. What cut the obtained dry cloth into 8 cm x 8 cm was made into the test cloth (The mass of one sheet is about 1.3g).

(2) Evaluation method 500 mL of tap water adjusted to 4 ° DH with a hardness component was placed in a tartometer and adjusted to 20 ° C. Here, 25 g of the test cloth and 0.42 mL of the liquid detergent composition shown in Table 1 were added, followed by treatment at 80 rpm for 10 minutes, and dehydration for 1 minute in a two-tank washing machine. This step was defined as one step. The obtained dehydrated cloth was naturally dried indoors to obtain a treated cloth.

(3) Judgment of softening effect Since the softening effect has a correlation with the adhesiveness of silicone, in order to obtain a quantitative result in this evaluation, it was calculated | required as the adsorption rate of silicone. That is, it was determined by the ratio (adsorption rate) of the amount of silicone adsorbed to the cotton knitted fabric out of the total amount of silicone charged into the targotometer.

Here, measurement of the amount of silicone and calculation of the adsorption rate were performed as follows. Using a high speed solvent extraction apparatus (ASE-200), the adsorbed component was extracted from the treated cloth with a mixed solvent of methanol / chloroform = 1/1. After removing the solvent from the extract with an evaporator, the obtained solid was dissolved in deuterated chloroform, the amount of silicone adsorbed on the treated cloth was determined by NMR, and the adsorption rate was calculated by the following formula.
Adsorption rate (%) = amount of silicone in the extract / amount of silicone added to the targotometer

  In addition, the liquid detergent composition described in the examples was clearly superior in flexibility as compared with the composition not containing silicone, and superiority was recognized in comparison with the comparative examples.

The components used in Table 1 are shown below. The pH was adjusted with hydrochloric acid. Table 1 shows the evaluation results. In addition, when the composition which does not mix | blend silicone is used for the liquid detergent composition of Example 1 and 2 of description as a parameter | index, equivalent detergency can be acquired.
Polyether-modified silicone compound a-1: In the general formula (aI), R ^1a , X ¹ and X ² are methyl groups, a = 3, b = 13.4, c = 0, R ^A compound in which ^2a is a methyl group, has an HLB value of 13.6, a modification rate of 4.7 mol%, and a kinematic viscosity of 1000 mm ² / s.
Polyether-modified silicone compound a-2: In general formula (a-I), R ^1a , X ¹ and X ² are methyl groups, a = 3, b = 30.3, c = 0, R ^2a is A compound which is a methyl group, has an HLB value of 13.4, a modification rate of 11.0 mol%, and a kinematic viscosity of 90 mm ² / s.
Polyether-modified silicone compound a-3: In general formula (a-I), in general formula (a-I), R ^1a , X ¹ and X ² are methyl groups, and a = 3, b = 1.11. 2, c = 0, R ^2a is a methyl group, has an HLB value of 12.7, a modification rate of 44.6 mol%, and a kinematic viscosity of 900 mm ² / s.
Polyether-modified silicone compound a-4: In general formula (a-I), in general formula (a-I), in general formula (a-I), R ^1a , X ¹ and X ² are methyl groups A = 3, b = 10.8, c = 0, R ^2a is a methyl group, HLB value 10.9, modification rate 31.5 mol%, kinematic viscosity 300 mm ² / s.
-Tertiary amine compound b-1: R ^1b in the general formula (b-II) is an alkyl group in which carbon number 17 and carbon number 15 are mixed (carbon number 17 / carbon number 15 = 60/40, molar ratio), R ^2b is a propylene group, X is a —CONH— group, R ^3b and R ^4b are each a methyl group compound / nonionic surfactant c-1: 12 moles average of EO in a linear primary alcohol having 12 carbon atoms Added

Example 2
The following composition can be mentioned as another specific embodiment of the present invention.

The components in the table are as follows.
Polyether-modified silicone: polyether-modified silicone compound a-1 or a-2 used in Example 1
・ Tertiary amine compound: Stearylamidopropyldimethylamine ・ Alkyltrimethylmethylammonium salt: Stearyltrimethylammonium chloride ・ Primary higher alcohol ethoxylate: 12 mole average of EO was added to linear primary alcohol having 12 carbon atoms・ Secondary higher alcohol ethoxylates: 12 secondary carbon alcohols with an average of 12 moles of EO added

Claims (4)

  (A) a polyether-modified silicone compound having an HLB value of 9 to 15 and a modification rate of 0.1 to 12 mol% (hereinafter referred to as component (a)), (b) (b1) a group bonded to a nitrogen atom Is a hydrocarbon group having 6 to 30 carbon atoms which may be separated by ether, amide or ester, and the remaining group bonded to the nitrogen atom is a hydrocarbon group having 1 to 4 carbon atoms Or a quaternary ammonium salt which is a hydroxyalkyl group, and (b2) one or two of the groups bonded to the nitrogen atom is a hydrocarbon group having 6 to 30 carbon atoms which may be cleaved by ether, amide or ester. And the remaining group bonded to the nitrogen atom is a hydrocarbon selected from a hydrocarbon group having 1 to 4 carbon atoms, or a tertiary amine which is a hydroxyalkyl group or a salt thereof (hereinafter referred to as component (b)), (C) (b) a surfactant other than the component [hereinafter referred to as component (c)] The liquid detergent compositions containing,. The liquid detergent composition according to claim 1, wherein the component (a) is a polyether-modified silicone compound represented by the following general formula (a-I).

[Wherein, R ^1a may be the same or different and each represents an alkyl group having 1 to 4 carbon atoms, and p and q are p: q = 1000: 1 to 7.3: 1, X ¹ And X ² may be the same or different and each represents a hydroxy group, an alkyl group having 1 to 4 carbon atoms, or an alkoxy group. R ^2a represents a hydrogen atom or an alkyl or acyl group having 1 to 4 carbon atoms, a represents a number of 1 to 4, b represents a number of 10 to 100, and c represents a number of 0 to 50. / Indicates that each of the structural units to which p and q are attached and the structural unit to which b and c are attached may be random or block. ]   The liquid detergent composition according to claim 1 or 2, wherein the component (c) is a nonionic surfactant.   The liquid cleaning composition of Claim 3 which contains 0.1-10 mass% of (a) component, 0.1-10 mass% of (b) component, and 5-60 mass% of (c) component.