JPH11279600A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a composition exhibiting marked effects in removing sebum stain on collars, sleeves and the like when applied directly by making the composition contain a nonionic surfactant, a sulfonic acid compound, a polyethylene glycol and water. SOLUTION: Twenty to 50 wt.% of a nonionic surfactant represented by the formula; R<1> O(EO)m /(PO)n H or 20-50 wt.% of a mixture of the surfactant with a nonionic surfactant represented by the formula: R<2> O(EO)x H (provided that the content, in the composition, of the nonionic surfactant of the formula: R<1> O(EO)m /(PO)n H is 10 wt.% or more), 0.1-5 wt.% of a sulfonic acid compound represented by the formula: R<3> SO3 H, 0.1-5 wt.% of a polyethylene glycol having a wt. average mol.wt. of 1,000-20,000, are made to contained, and the water content is set at 50 wt.% or less. In the formulae, R<1> is a 8-20C alkyl or alkenyl; EO is ethylene oxide; PO is propylene oxide; m is 4-16; n is 1-5; R<2> is a 8-20C linear secondary alkyl or linear secondary alkenyl; R<3> is a mono-or di-alkyl phenyl containing 1-6 alkyl carbon atoms in all.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition having a high effect of removing sebum stains such as collars and cuffs when applied directly to contaminated parts.

[0002]

2. Description of the Related Art Liquid detergents are easy to use in a washing method in which a detergent is directly applied to soiled portions of clothes or the like and washed. Since the stains on the collar and cuffs are strong, the frequency of performing partial washing is high, and the development of a liquid detergent composition excellent in detergency against collar and cuff stains has been desired. Japanese Patent Application Laid-Open No. 9-279180 discloses a liquid detergent composition for partial washing, which is mainly composed of a nonionic surfactant which is usually liquid at room temperature, has a small change in viscosity with temperature, and is excellent in usability. I have. In particular, a liquid detergent composition having excellent detergency against sebum stains such as collars and cuffs is desired.

[0003]

Means for Solving the Problems The present invention comprises the following components (a), (b) and (c) and has a water content of 50% by weight.
The present invention provides the following liquid detergent composition. (A) (ai) 20 to 50% by weight of a nonionic surfactant represented by the following general formula (I) or (a-ii) the following general formula (I)
And 50 to 50% by weight of the nonionic surfactant represented by the following general formula (II) [however, the content of the nonionic surfactant represented by the general formula (I) in the detergent composition] The amount is at least 10% by weight. R ¹ O (EO) _m / (PO) _n H (I) [R ¹ is an alkyl group or an alkenyl group having 8 to 20 carbon atoms. EO indicates ethylene oxide, and PO indicates propylene oxide. m and n are average number of moles added, m
Is 4 to 16, and n is 1 to 5. R ² O (EO) _x H (II) [R ² is a linear secondary alkyl group having 8 to 20 carbon atoms or a linear secondary alkenyl group. EO represents ethylene oxide. x is 5-15. (B) Sulfonic acid compound represented by the following general formula (III): 0.1 to 5% by weight R ³ SO ₃ H (III) [R ³ has 1 to 6 carbon atoms other than a benzene ring. Monoalkylphenyl or dialkylphenyl. (C) 0.1 to 5% by weight of polyethylene glycol having a weight average molecular weight of 1,000 to 20,000

[0004]

BEST MODE FOR CARRYING OUT THE INVENTION With respect to the component (a) blended in the present invention, the average carbon number of R ^{1 in} the general formula (I) is 12
To 18 linear alkyl groups, m is 5 to 15, n is 1 to 3
Is preferred. The order of addition of EO and PO may be, for example, random addition polymerization, or addition of EO followed by addition of PO, or vice versa.

[0005] Among those represented by the general formula (I), nonionic surfactants represented by the following general formula (IV) are particularly preferred. R ⁴ O (EO) _p (PO) _q (EO) _r H (IV) [R ⁴ represents a linear or branched alkyl or alkenyl group having an average of 10 to 18 carbon atoms, EO represents an oxyethylene group, PO represents an oxypropylene group. p, q and r represent the average number of moles added, p> 0, q = 1 to 4, r> 0
Where p + q + r = 6 to 14 and p + r = 5 to 12. Preferably, p + q + r = 7-14, and p + r =
6 to 12, and q = 1 to 2. The nonionic surfactant of the general formula (IV) is added to an alcohol having an alkyl group of R ⁴ derived from synthetic or natural fats and oils in the order of ethylene oxide and propylene oxide, and then ethylene oxide is added again. Are synthesized by

In the nonionic surfactant represented by the general formula (II), R ² has an average carbon number of 10 to 14, and x is 7-1.
Two are preferred.

[0007] The component (a) of the present invention can be used alone or in combination with a nonionic surfactant represented by the general formula (II), even if only the nonionic surfactant represented by the general formula (I) is used (ai). a-ii). However, when the nonionic surfactant represented by the general formula (I) and the nonionic surfactant represented by the general formula (II) are used in combination, the cleaning composition contains the general formula (I)
10% by weight or more of the nonionic surfactant represented by

[0008] The composition of the present invention preferably contains 20 to 40% by weight of the nonionic surfactant of the component (a).

In the component (b), R ³ in the general formula (III) is preferably a monoalkylphenyl or dialkylphenyl having an alkyl group having 1 to 2 carbon atoms at the para or meta position, and most preferably paratoluene. Sulfonic acid and meta-xylene sulfonic acid. Component (b) is formulated as an acid, but may be neutralized by an alkali in the solution to form a salt. In this case, examples of the alkali agent for forming a salt include a hydroxide of an alkali metal and an alkanolamine, and monoethanolamine is particularly preferable. The composition of the present invention contains component (b) in an amount of 0.2 to 4%.
It is preferable that the content be contained by weight.

The preferred average molecular weight of the polyethylene glycol of component (c) is from 2000 to 15,000. The average molecular weight of polyethylene glycol can be measured by gel permeation chromatography using a standard sample of polyethylene glycol having a known average molecular weight. The composition of the present invention preferably contains 0.2 to 4% by weight of the component (c).

Examples of the surfactant other than the component (a) incorporated in the present invention include linear alkylbenzene sulfonates and polyoxyethylene alkyl ether sulfates as anionic surfactants. It is preferable to use a fatty acid salt in combination for foaming. As a substance for forming a salt, in addition to an alkali metal such as sodium and potassium, an alkaline earth metal such as magnesium and / or an alkanolamine such as mono, di, and triethanolamine are used. The use of is preferred because the liquid stability is improved. The anionic surfactant may be added in an acid form and form a salt with an alkaline agent in the liquid detergent.

As the nonionic surfactant, an amine oxide or a polyoxyethylene alkyl ether other than the general formula (II) can be blended.

In order to improve the feeling, it is preferable to use a cationic surfactant such as a mono-long-chain alkyl quaternary ammonium salt in combination, but when a cationic surfactant is used, a liquid detergent is used. Care is taken not to impair the phase stability of.

The water content of the liquid detergent composition is 40% by weight.
The following is preferable in obtaining excellent detergency.

Further, the following components can be blended. Alkali agents such as hydroxides, silicates, carbonates and alkanolamines of alkali metals; alcohols such as ethanol; glycols such as ethylene glycol and propylene glycol; benzoates (also effective as preservatives)
And a phase modifier such as polyoxyalkylene benzyl ether and polyoxyalkylene phenyl ether; iminodiacetic acid, diethylenetriaminepentaacetic acid, glycoletherdiaminetetraacetic acid, hydroxyethyliminodiacetic acid, and triethylamine. Ethylene tetramine hexaacetic acid, malonic acid, succinic acid, diglycolic acid,
Sequestering agents such as malic acid, tartaric acid, citric acid, and salts thereof; polyacrylic acid, polymaleic acid, maleic acrylic acid copolymer, polyaspartic acid, carboxymethylcellulose, maleic anhydride-diisobutylene copolymer , Maleic anhydride-methyl vinyl ether copolymer, maleic anhydride-isobutylene copolymer,
Maleic anhydride-vinyl acetate copolymer, naphthalene sulfonate formalin condensate polymer, JP-A-59-62
No. 614, a re-staining inhibitor or sequestering agent such as a polymer described in JP-A-7-53993; a color transfer inhibitor such as polyvinylpyrrolidone; an enzyme such as amylase, protease, lipase, cellulase;
Enzyme stabilizers such as calcium chloride, calcium sulfate, formic acid, boric acid (boron compound); fluorescent dyes such as Tinopearl CBS (manufactured by Ciba Geigy); softening agents such as amino-modified silicone; defoaming agents such as silica and silicone. Antioxidants such as dibutylhydroxytoluene, distyrenated cresol, sodium sulfite and sodium bisulfite; and colorants, flavors, antibacterial preservatives and the like.

[0016]

[Example] <Preparation of collar soiled cloth> Cotton worn for 3 days /
Collars of 50 polyester blended shirts were cut and collected. Fifty of the cut collars were divided into five groups of collar-stained cloths according to the degree of soiling, and used for cleaning evaluation using a third group of collar-soiled soiled cloths from the most severely soiled.

<Preparation of Liquid Cleaning Composition> A liquid cleaning composition comprising the components shown in Table 1 was prepared. pH adjustment is 48
An aqueous solution of sodium hydroxide having a concentration of% by weight was used.

<Evaluation of Detergency> A two-tank type washing machine (Toshiba Galaxy 3.6) was prepared, 40 L of tap water was poured into the washing tub, and 1.4 kg of cotton underwear and 0.6 kg were put into the washing tub. Insert a cotton / polyester blend unworn shirt. Further, a compact type powder detergent is added according to the standard usage amount. 3
One piece of the cloth stained with the collar stain prepared above was sewed on a cotton cloth of 0 × 30 cm ² , and one liquid cleaning composition having the composition shown in Table 1 was applied to one piece of the cloth stained with the collar. 3mL
Apply. Five pieces of the collar-contaminated cloth thus obtained are put in a washing tub and washed for 10 minutes. After that, it is dehydrated for 1 minute, and rinsed with running water at a flow rate of 15 L / min for 8 minutes. After that, it is dehydrated for 5 minutes and air-dried indoors.

With respect to each of the collar-stained stained cloths (5 sheets for one composition) washed with each liquid detergent composition, the stain removal level was determined by observing all 5 sheets according to the following criteria. The judgment was made by a trained panelist in the laboratory. The results are shown in Table 1. ；: Sufficient level of dirt removed and satisfactory level △: Slight level of dirt remaining and unsatisfactory level ×: Level of dirt hardly removed and unsatisfactory level

[0020]

[Table 1]

<Components in Table 1> Details of the components used in the liquid detergents in Table 1 are shown below. And non-ionic surfactant (1) A: General formula R ⁴ is a linear primary alkyl 10 to 14 carbon atoms (IV), p = 5, q = 2,
r = 5. And non-ionic surfactant (1) B: Formula R ⁴ is a linear primary alkyl 10 to 14 carbon atoms (IV), p = 7, q = 2,
r = 3. Nonionic surfactant (1) C: R ^{4 in the} general formula (IV) is a linear primary alkyl having 10 to 14 carbon atoms, p = 5, q = 2,
r = 3. And non-ionic surfactant (1) D: that R ¹ in the general formula (I) is obtained by block addition linear primary alkyl 10 to 14 carbon atoms, the m = 8, n = 2 in the order of EOPO. And non-ionic surfactant (1) E: that R ¹ in the general formula (I) is obtained by random addition linear primary alkyl 10 to 14 carbon atoms, the m = 8, n = 2.

Nonionic surfactant (1) F: R ^{1 in the} general formula (I) is a linear primary alkyl having 10 to 14 carbon atoms;
A block in which m = 6 and n = 1 are added in the order of EOPO. And non-ionic surface active agent (2) G: R ² of the general formula (II) is 10 to 14 carbon atoms linear secondary alkyl, x = 8 ones. -Polyethylene glycol: average molecular weight 6000-Amine oxide: dodecyl dimethylamine oxide-LAS-S: linear alkylbenzene sulfonic acid having 9 to 14 alkyl carbon atoms-ES-S: polyoxyethylene alkyl ether sulfate (10 to 14 alkyl carbon atoms) Fatty acid: coconut oil fatty acid having 12 to 14 carbon atoms; polyacrylic acid: average molecular weight 5000; polyethylene glycol phenyl ether: polyoxyethylene monophenyl ether (addition of 3 moles of ethylene oxide on average) -Enzyme: Durazyme 16.0 L (protease, Novo Nordisk Bioindustry)

[0023]

The liquid detergent composition of the present invention has excellent detergency against stains on collars and cuffs.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C11D 3:37 1: 722)

Claims (1)

[Claims] 1. A liquid detergent composition comprising the following components (a), (b) and (c) and having a water content of 50% by weight or less. (A) (ai) 20 to 50% by weight of a nonionic surfactant represented by the following general formula (I) or (a-ii) the following general formula (I)
And 50 to 50% by weight of the nonionic surfactant represented by the following general formula (II) [however, the content of the nonionic surfactant represented by the general formula (I) in the detergent composition] The amount is at least 10% by weight. R ¹ O (EO) _m / (PO) _n H (I) [R ¹ is an alkyl group or an alkenyl group having 8 to 20 carbon atoms. EO indicates ethylene oxide, and PO indicates propylene oxide. m and n are average number of moles added, m
Is 4 to 16, and n is 1 to 5. R ² O (EO) _x H (II) [R ² is a linear secondary alkyl group or a linear secondary alkenyl group having 8 to 20 carbon atoms. EO represents ethylene oxide. x is 5-15. (B) Sulfonic acid compound represented by the following general formula (III): 0.1 to 5% by weight R ³ SO ₃ H (III) [R ³ has 1 to 6 carbon atoms other than a benzene ring. Monoalkylphenyl or dialkylphenyl. (C) 0.1 to 5% by weight of polyethylene glycol having a weight average molecular weight of 1,000 to 20,000