JP2000219894A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prepare a liquid detergent composition excellent in resistance to drying, having high washing effect and excellent in usability by including a surfactant, a specific glycol and an organic phosphonic acid. SOLUTION: This composition comprises (A) 20-80 wt.% surfactant (e.g. an alkylbenzenesulfonate, an alcohol alkoxylate, an alkylglycoside or the like), (B) 0.01-20 wt.% glycol (e.g. ethylene glycol, diethylene glycol, tetrapropylene glycol or the like) of the formula HO(CH2CH2O)n(CH2CHCH3O)mH [wherein, (n)+(m)=1-4] and (C) 0.01-10 wt.% organic phosphonic acid (e.g. ethane1,1- diphosphonic acid, pyrrolidone-5,5-diphosphonic acid or the like).

Description

DETAILED DESCRIPTION OF THE INVENTION TECHNICAL FIELD OF THE INVENTION

[0001] The present invention relates to a liquid detergent composition which is excellent in low-temperature stability, does not cause precipitation or separation of crystals during long-term storage, and does not form a film or the like due to evaporation of water by drying.

[0002]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concentrated liquid detergent composition for clothing in which the formation of a film on the composition is prevented.

[0003]

2. Description of the Related Art Liquid detergents for clothing include nonionic surfactants as a main base, nonionic surfactants and anionic surfactants in combination, and anionic surfactants as a main base. Etc. exist in a wide variety. These liquid detergents are characterized by good solubility. Further, since it is a liquid, it has an advantage that a high detergency can be exhibited by directly applying it to a strong stain. In particular,
Nonionic surfactants have high detergency against sebum stains and the like adhering to collar sleeves and are widely used in liquid detergents.

[0004] On the other hand, recently, various types of concentrated liquid detergents have been studied in order to make products more compact and to improve the application detergency. Since the concentrated liquid detergent has a higher surfactant content than before, there are many problems in formulation such as viscosity and storage stability, and various technical studies have been made. Among them, one of the most prominent in the concentration system is the problem that a film is formed at the interface between the composition and air. Film formation impairs the fluidity of the composition, and causes inconvenience in use, such as the composition adhering to the mouth of the container, and the adhering composition drying and sticking to the lid, thereby hindering opening and closing. Occurs. On the other hand, for example, JP-A-5-202381 discloses that the formation of a film containing a fatty acid polyoxyalkylene alkyl ether synthesized using a specific catalyst, an anionic surfactant and a hydrotrope agent was prevented. A liquid detergent composition is disclosed. However, this composition has not been satisfactory in an environment such as low humidity. Further, improvements in the field of containers such as containers having a dripping prevention function are being studied, but no satisfactory results have been obtained yet.

[0005]

SUMMARY OF THE INVENTION The present invention relates to a liquid detergent composition which is excellent in dryness and has a high cleaning effect and which is excellent in usability.

[0006]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventors have achieved the above object by containing a surfactant, a specific glycol and an organic phosphonic acid or a salt thereof. Was found to be extremely effective, and the present invention was completed. That is, the present invention
(A) 20 to 50% by weight of a surfactant, and (B) 0.01 to 20% by weight of a compound represented by the following formula (1).

[0007]

Embedded image HO (CH ₂ CH ₂ O) _n (CH ₂ CHCH ₃ O) _m H (1) (where n + m: 1 to 4)

(C) A liquid detergent composition for clothing, comprising 0.01 to 10% by weight of an organic phosphonic acid and / or a salt thereof. A liquid detergent composition comprising:

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail. As the surfactant used in the present invention, any of an anionic surfactant, a nonionic surfactant, a cationic surfactant, and an amphoteric surfactant, or any combination thereof can be used.

[0010] The anionic surfactants include those having 10 carbon atoms.
Alkyl benzene sulfonate having an alkyl group of from 16 to 16; alkyl ether sulfate or alkyl ether carboxylate having an alkyl or alkenyl group of 10 to 20 carbon atoms and having an ethylene oxide addition mole number of 1 to 8 mol; Examples thereof include alkyl sulfates having several tens to 20 carbon atoms, α-sulfofatty acid ester salts having 10 to 20 carbon atoms, and higher fatty acid salts having 10 to 24 carbon atoms. Among the above, preferred anionic surfactants are alkylbenzene sulfonates, alkyl ether sulfonates, alkyl ether carboxylates, and higher fatty acid salts. As higher fatty acid salts, unsaturated ones, particularly oleic acid salts, are preferred.

The nonionic surfactant is a nonionic surfactant having at least one linear or branched alkyl or alkenyl group having 8 to 24 carbon atoms, or a nonionic surfactant substituted with an alkyl group having 8 to 24 carbon atoms. Nonionic surfactant having at least one aryl group, for example, alcohol alkoxylate, alkyl glycoside, sorbitan fatty acid ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene fatty acid ester oxyethylene propylene block polymer, fatty acid monoglyceride, amine oxide And so on. Of these, alcohol alkoxylates are preferred.

Preferred nonionic surfactants are alcohol alkoxylates represented by the following formula (2).

[0013]

Embedded image R ¹ —O— (CH ₂ CH ₂ O) n _{AV. - (CH 2 CHCH 3 O)} m AV. R ² (2)

(R ¹ : a branched or straight-chain alkyl or alkenyl group having 10 to 16 carbon atoms R ² : hydrogen or an alkyl group having 1 to 3 carbon atoms n _{AV .} : 4 to 15, m _{AV .} : 0 5 wherein n _{AV. And} m _AV. Represent the average number of moles added.)

Examples of the nonionic surfactant of the above formula (2) include a primary alcohol alkoxylate and a secondary alcohol alkoxylate. Those derived from preferred primary alcohols have an average carbon number of 10 to 16,
Preferably, 12 to 14 primary alcohols have an average of 4 to 20 moles, preferably 5 to 15 moles, of ethylene oxide.
Particularly preferred is an alcohol alkoxylate to which 5 to 9 moles, and an average of 0 to 5 moles, preferably 0 to 3 moles of propylene oxide are added.

Preferred secondary alcohols are those having an average of 4 to 20 moles, preferably 5 to 15 moles, and particularly preferably 5 to 15 moles of ethylene oxide in a secondary alcohol having an average carbon number of 10 to 16, preferably 12 to 14. Is an alcohol alkoxylate to which 5 to 9 moles and propylene oxide are added on average of 0 to 5 moles, preferably 0 to 3 moles.

Among the above nonionic surfactants, those having a narrow addition molar distribution of alkylene oxide (NRE nonion) are preferred. That is, the average addition mole number of alkylene oxide n _AV. , M _AV. And n _AV. ±
2, m _AV. NRE nonions having a content in the range of ± 2 of 55% by weight or more, preferably 70% by weight or more. When these NRE nonions are used singly or as a mixture of two or more, performance superior in detergency or stability can be obtained as compared with the case of using those having a wide addition molar distribution (BRE nonions). When two or more types are mixed, they are mixed within a range that does not impair these characteristics of NRE nonions. Preferably, they are used alone or as a mixture of up to three types.

The above-mentioned preferred nonionic surfactants provide good detergency.

The method for producing the nonionic surfactant is not particularly limited, but a synthetic alcohol obtained by an oxo method such as an aliphatic alcohol (for example, Diadol (manufactured by Mitsubishi Chemical) or a natural alcohol such as Conol (manufactured by Shin Nippon Chemical Co., Ltd.) is used. To an alcohol or a mixture thereof) with an alkylene oxide in the presence of an alkoxylation catalyst. As the alkoxylation catalyst, for example, an alkoxylation catalyst described in JP-B-6-15038, that is, Al ³⁺ , Ga
³⁺ , In ³⁺ , Tl ³⁺ , Co ³⁺ , Sc ³⁺ , La
Magnesium oxide to which metal ions such as ³⁺ and Mn ²⁺ are added can be used. Also, JP-A-8-2
An Al / Mg composite oxide catalyst obtained by activating and activating aluminum hydroxide / magnesium hydroxide described in Japanese Patent No. 68919 is preferable.

According to this method, an NRE nonion having a narrow addition molar distribution of the alkylene oxide and a small amount of unreacted alcohol can be obtained.

As the cationic surfactants, those having 10 carbon atoms
From 1 to 24 alkyl or alkenyl groups,
Preferably, an amine salt having one or a quaternary compound thereof is used. The cationic surfactant is preferably contained in the composition in the range of 0 to 10% by weight.

As the amphoteric surfactant, a carbon number of 8 to 18 is used.
And alkyldimethylamine oxide having an alkyl group having 8 to 18 carbon atoms. The surfactant in the present invention accounts for 20 to 80% by weight, preferably 25 to 70% by weight, particularly preferably 30 to 80% by weight in the liquid detergent composition.
６０60% by weight. If the amount of the activator is lower than this range, it is not suitable for the purpose of compactness, and if the content is high, the liquid stability cannot be maintained.

The component (B) is a compound represented by the following formula (1).

[0024]

Embedded image HO (CH ₂ CH ₂ O) _n (CH ₂ CHCH ₃ O) _m H (1) (where n + m: 1 to 4)

Specific examples of the compound include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, propylene glycol, dipropylene glycol, tripropylene glycol, tetrapropylene glycol, or an ether compound of ethylene glycol and propylene glycol. And the like. These compounds can be used alone or as a mixture of two or more, but preferably a mixture of two or more is used.

The compound of formula (1) is present in the composition in an amount of 0.01
-20% by weight, preferably 0.1-15% by weight, particularly preferably 0.5-10% by weight.

Specific examples of the organic phosphonic acid or its salt as the component (c) include ethane 1,1-diphosphonic acid,
Ethane-1,1,2-triphosphonate, ethane-1-
Hydroxy-1,1, -diphosphonic acid and derivatives thereof,
Examples include ethanehydroxy 1,1,2-triphosphonic acid, ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, and the like, and salts thereof. By adding these chelating agents,
Precipitation of crystals during film formation is suppressed, which is more effective in suppressing film formation.

(C) The organic phosphonic acid or a salt thereof used in the present invention is an organic substance having at least one phosphonic acid group in the molecule, and preferably has two or more phosphonic acid groups. is there. Specific examples include ethane 1,1-diphosphonic acid, ethane-1,1,2
-Triphosphonic acid, ethane-1-hydroxy-1,1,
-Diphosphonic acid and its derivatives, ethanehydroxy 1,
1,2-triphosphonic acid, ethane-1,2-dicarboxy-1,2-diphosphonic acid, methanehydroxyphosphonic acid, aminotri (methylenephosphonic acid), ethylenediaminetetra (methylenephosphonic acid), 4-dimethylamino-1- Hydroxybutanediphosphonic acid, pyrrolidone-5,5-diphosphonic acid, 1-aminoethane-1,1-
Diphosphonic acid, dimethylaminomethane diphosphonic acid, N
-Carboxymethylamino-alkanediphosphonic acid or salts thereof. As the salt, an alkali metal salt such as a sodium salt and a potassium salt, and an alkanolamine salt such as a monoethanolamine salt and a diethanolamine salt are preferable.

Of these, an organic phosphonic acid or a salt thereof further having a phosphonic acid group and one or more groups selected from a hydroxyl group, an amino group and a carboxyl group is preferred. The organic phosphonic acid or a salt thereof is present in the composition in an amount of 0.01 to 10% by weight, preferably 0.05 to 10% by weight.
The content is 10% by weight, particularly preferably 0.5 to 5% by weight. If the content is less than 0.01% by weight, the effect of the present invention cannot be obtained.
If it exceeds 10% by weight, the storage stability deteriorates.

The pH of the liquid detergent of the present invention is generally adjusted to the pH of a liquid detergent for clothing, that is, 9 to 11 for a heavy detergent and 6 to 9 for a light detergent. pH
Examples of the adjusting agent, as an alkali agent, sodium hydroxide, alkali hydroxides such as potassium hydroxide, monoethanolamine, diethanolamine, alkanolamines such as triethanolamine, acids as hydrochloric acid, sulfuric acid,
Phosphoric acid, organic carboxylic acids and the like can be used.

Other optional components contained in the liquid detergent of the present invention include enzymes such as protease, lipase, cellulase, amylase, water-soluble silicone, emulsifier,
Various components, such as an anti-redeposition agent, a fragrance, and a coloring matter, which are usually blended in a liquid detergent composition, can be blended within a range that does not impair the effects of the present invention.

[0032]

EXAMPLES Hereinafter, the present invention will be described in more detail with reference to examples. 1) Evaluation of film-forming property 3 ml of the composition shown in Table 2 was weighed in a petri dish, and was weighed at 25 ° C.
The composition was left for 48 hours in a constant temperature room at a humidity of 45%, the state of the surface of the composition was visually observed, and the judgment was made based on the following judgment criteria. ◎: No change ○: Slightly viscous but fluidity and no film formation confirmed △: Slight film formation observed on surface ×: Film formed on surface and loses fluidity

2) Evaluation of Storage Stability The composition was stored under 0 ° C. storage conditions for 2 weeks, and the appearance was visually observed and evaluated based on the following criteria. ○: No change Δ: Slightly increased viscosity Despite no change in appearance ×: Loss of fluidity due to crystal precipitation or aging

[0034]

[Table 1]

[0035]

[Table 2]

[0036]

[Table 3]

Claims (1)

[Claims] (1) 20 to 80% by weight of a surfactant (A), and (B) 0.01 to 2 of a compound represented by the following formula (1).
0% by weight HO (CH ₂ CH ₂ O) _n (CH ₂ CHCH ₃ O) _m H (1) (where n + m: 1-4) (C) Organic phosphonic acid and / or salt thereof 0.01 ~
Liquid detergent composition for clothing characterized by containing 10% by weight