JP2801829B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

FIELD OF THE INVENTION This invention relates to liquid detergent compositions. More particularly, the present invention relates to concentrated liquid detergent compositions.

[0002]

2. Description of the Related Art Conventionally known detergents include solid detergents such as powder detergents and tablet detergents, and liquid detergents. Among them, the liquid detergent has the advantages that it does not have the problems of dust, moisture absorption and solidification as a solid detergent, and that it is readily dissolved in washing water, easy to measure, and can be used directly on contaminated portions of clothing.

However, liquid detergents currently sold on the market generally contain about 30 to 60% by weight of water and a solubilizing agent, and reduce the amount of water, a phase modifier and the like for concentration. In addition, there is a problem that separation, precipitation and consolidation during low-temperature storage and separation and precipitation during high-temperature storage are liable to occur. As for the formulation of the concentrated liquid detergent, for example, JP-A-4-227698 describes a liquid detergent composition containing a nonionic surfactant as a main surfactant, but the storage stability under severe storage conditions is still insufficient. I can't say that.

[0004]

Means for Solving the Problems The present inventors have prepared a nonionic surfactant, a sulfonate type or sulfate type anionic surfactant, an alkyl polysaccharide surfactant, and a phase regulator having no surfactant other than water. The present invention was completed by finding that the liquid detergent compositions containing specific ratios can solve not only the cleaning performance but also the above-mentioned problem of storage stability and further reduce the amount of use per washing. did.

That is, the present invention provides a concentrated liquid detergent composition comprising the following components (a) to (d) and having an alkali metal and / or alkaline earth metal content of 1.4% by weight or less. It provides things. (a) having an alkyl group or alkenyl group having an average carbon number of 6 to 20, and having an average ethylene oxide mole number of 1 to 2;
0, having a polyoxyalkylene alkyl or alkenyl ether having an average addition mole number of propylene oxide of 0 to 5 and / or a substituted alkyl group or alkenyl group having an average carbon number of 6 to 20; 20, polyoxyalkylene alkyl or alkenyl phenyl ether having an average number of moles of propylene oxide of 0 to 5 (b) mono- or diethanolamine salt-type sulfonate-type or sulfate-type anionic surfactant, provided that (a) +
(b) is 30 to 75% by weight, and (b) / (a) = 1 /
2 to 2/1.

(C) 5 to 20% by weight of an alkyl polysaccharide surfactant (d) 1 to 15% by weight of a phase control agent having no surfactant other than water, provided that at least 20% by weight of the total amount of the component (b) Is monoethanor
Triethanolamine salt of sulfonate-type or sulphate type Ani
An surfactant, and (d) component and water in the composition .
The total amount is 30% by weight or less.

The component (a) of the present invention has an alkyl group or an alkenyl group having an average of 6 to 20 carbon atoms, has an average ethylene oxide mole number of 1 to 20, and has an average propylene oxide mole number of 0 to 5; A polyoxyalkylene alkyl or alkenyl ether and / or a substituted alkyl group or alkenyl group having an average carbon number of 6 to 20, having an average addition mole number of ethylene oxide of 1 to 20, and an average addition mole number of propylene oxide of 0 to 5; A polyoxyalkylene alkyl or alkenyl phenyl ether, for example, one selected from the following (1) and (2):
More than types can be used.

(1) a polyoxyethylene alkyl or alkenyl ether having an alkyl or alkenyl group having an average of 10 to 20 carbon atoms and having an average addition mole number of ethylene oxide of 1 to 20; Polyoxyethylene alkyl phenyl ether having 12 substituted alkyl groups and having an average ethylene oxide addition mole number of 1 to 20 moles The compounds of (1) and (2) are ethylene oxide addition type nonionic surfactants, These may further be propylene oxide or butylene oxide. In this case, either random addition or block addition may be performed.

The component (a) of the present invention is more preferably a polyoxyethylene alkyl or alkenyl ether having an alkyl group or alkenyl group having an average of 10 to 14 carbon atoms and having 5 to 12 moles of ethylene oxide added thereto. It is.

The anionic surfactant which is the component (b) of the present invention is a sulfonate-type or sulfate-type anionic surfactant, and is, for example, one selected from the following (1) to (5):
More than types can be used. (1) Alkylbenzene sulfonate having an alkyl group having an average of 10 to 16 carbon atoms (2) having a linear or branched alkyl or alkenyl group having an average of 10 to 20 carbon atoms, and having an average of 0.5 to 8 mol per molecule (3) Alkyl or alkenyl sulfate having an alkyl group or alkenyl group having an average of 10 to 20 carbon atoms (4) Olefin sulfonate having an average of 10 to 20 carbon atoms in one molecule (5) Alkanesulfonate having an average of 10 to 20 carbon atoms in one molecule (b) As a counter ion for forming a salt of the anionic surfactant, alkali metals such as sodium and potassium, magnesium, calcium, etc. Alkanol alcohols such as alkaline earth metals, monoethanolamine, diethanolamine, and triethanolamine Each cations and mixtures thereof down and the like.

[0011] In the present invention as the anionic surfactant component (b), which has a mono or diethanolamine salt is used. And at least 20% by weight of the total amount of component (b)
Above is a monoethanolamine salt type sulfonate type or
It is a sulfate-type anionic surfactant . That is, in the present invention, if the content of the alkali metal and / or alkaline earth metal contained in the entire liquid detergent composition exceeds 1.4% by weight, the composition may become turbid or precipitate. For this reason, in the present invention, the alkali metal and / or alkaline earth metal contained in the entire liquid cleaning composition must be 1.4% by weight or less as a simple metal. Here, the alkali metal and / or alkaline earth metal in the composition refers to the alkali metal salt and / or alkaline earth metal salt of the anionic surfactant of the component (b) or the alkali metal of the optional components described below. It is derived from those which form salts and alkaline earth metal salts. Therefore, when an alkali metal salt and / or an alkaline earth metal salt is blended as the component (b), it is included in the entire liquid detergent composition by weight including that in the other components. It is necessary to mix the alkali metal and / or alkaline earth metal so that the amount of the metal alone is 1.4% by weight or less.

In the present invention, the component (a) and the component (b) are incorporated in the composition in an amount of 30 to 75% by weight in total of (a) + (b), and the component (a) and the component (b) ) The weight ratio of the components is (b) / (a) =
It is in the range of 1/2 to 2/1. If the amount of component (a) and component (b) is not within this range, sufficient detergency cannot be obtained.

Examples of the alkyl polysaccharide surfactant which is the component (c) of the present invention include alkyl glycosides represented by the following general formula (I). _{R 1 (OR 2) x G} y (I) wherein, R ₁ represents an alkyl group having 8 to 18 carbon atoms linear or branched, alkenyl or alkylphenyl group, R ₂ is C2-4 An alkylene group, G is a residue derived from a reducing sugar having 5 or 6 carbon atoms, x and y are average values, x is a number from 0 to 5, and y is a number from 1 to 10. In the formula, R ₁ preferably has 9 to 14 carbon atoms from the viewpoint of solubility, foaming properties, and detergency. Further, R ₂ preferably has 2 to 3 carbon atoms from the viewpoint of water solubility and the like. Further, the value of x affects water solubility and crystallinity, and the larger the value of x, the higher the water solubility and the lower the crystallinity.
Ranges from 0 to 2, especially 0. y is preferably in the range of 1-4. y is preferably to select in consideration of physical properties derived from the hydrophobic group R _1, for example, R ₁ is an average number of carbon atoms 9
It is preferable to select y = 1 to 1.4 in the case of 11 hydrophobic groups and to select y = 1.3 to 4 in the case of R ₁ being a hydrophobic group having an average carbon number of 12 to 14. The average degree of sugar polymerization y is the proton NM.
It can be obtained by R. The binding mode of this sugar chain is 1-
2, 1-3, 1-4 or 1-6 bond, α- or β-pyranoside bond or furanoside bond, or a combination thereof. Further, in the formula, the structure of G is determined by the raw material monosaccharide or polysaccharide. Examples of the monosaccharide include glucose, fructose, galactose, xylose, mannose, lyxose, and arabinose, and the polysaccharide includes maltose. , Xylobiose, isomaltose, cellobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose, and the like. These may be used alone or in combination of two or more. (c) The component is blended in the liquid detergent composition of the present invention in an amount of 5 to 20% by weight. If the amount of the component (c) is less than 5% by weight, the storage stability under a wide range of temperature conditions deteriorates. On the other hand, if it exceeds 20% by weight, the fluidity at low temperatures is reduced, and the storage stability is deteriorated.

The components (c) and (a) of the present invention are one kind of nonionic surfactants, but other nonionic surfactants may be used in combination as long as the effects of the present invention are not impaired. it can. Examples of nonionic surfactants that can be used in combination include higher fatty acid alkanolamides or ethylene oxide adducts thereof, and fatty acid glycerin monoester.

Examples of the phase modifier having no surface activity other than water as the component (d) include methanol, ethanol, and the like.
Lower alcohols having 4 or less carbon atoms such as isopropanol, propylene glycol, polyethylene glycols having an average molecular weight of less than 5,000, polypropylene glycols having an average molecular weight of less than 5,000, benzenesulfonate and p-
Solubilizing agents such as lower alkylbenzene sulfonates having 6 or less carbon atoms, such as toluene sulfonates, benzoates or urea, can be used alone or in combination. The component (d) is blended in the liquid detergent composition of the present invention in an amount of 1 to 15% by weight, preferably 1 to 10% by weight. If the amount of the component (d) is less than 1% by weight, the effect of lowering the viscosity at low temperatures and the effect of preventing caking cannot be sufficiently exhibited.
If the amount is more than 100% by weight, not only the separation and precipitation tend to occur at high temperatures, but also the concentration of the washing base intended in the present invention cannot be achieved.

The liquid detergent composition of the present invention contains water, but the total amount of component (d) and water is 30 or less . (d) Separate sedimentation occurs when the sum of the components and water exceeds 30 % by weight.

Other optional components include fatty acid salts having 8 to 20 carbon atoms, organic polyvalent carboxylate having a divalent metal ion-capturing ability, enzymes such as protease, amylase, lipase, and cellulase; and enzyme stable agents such as calcium chloride. Agents, fluorescent dyes, fragrances, and the like can be blended within the usual range as long as the effect is not impaired. The fatty acid salt having 8 to 20 carbon atoms may be either a saturated fatty acid salt or an unsaturated fatty acid salt, and is used alone or in combination. As organic polyvalent carboxylate having a divalent metal ion trapping ability, nitrilotriacetate, ethylenediaminetetraacetate, iminodiacetate, diethylenetriaminepentaacetate, glycol etherdiaminetetraacetate,
Aminopolyacetates such as hydroxyethyliminodiacetic acid, triethylenetetramine hexaacetate, polyacrylic acid,
Salts of polymaleic acid, malonic acid, succinic acid, diglycolic acid, malic acid, tartaric acid, citric acid and the like can be mentioned. Other having anti-redeposition ability, polyvinylpyrrolidone, polyethylene glycol having an average molecular weight of 5,000 or more, maleic anhydride-diisobutylene copolymer, maleic anhydride-methylvinyl ether copolymer, maleic anhydride-
Polymers such as isobutylene copolymer, maleic anhydride-styrene copolymer, maleic anhydride-vinyl acetate copolymer, and salts of high molecular compounds such as naphthalene sulfonate formalin condensate are also compounded within a range that does not prevent stability. can do.

The liquid detergent composition of the present invention is isotropic and all components are substantially solubilized in the system or exist in the form of micelles. Further, the liquid detergent composition of the present invention is transparent. Here, "transparent" means that the transmittance (T%) of the liquid at 660 nm is measured and T% = 80 or more is regarded as transparent.

Further, the undiluted solution of the liquid detergent composition of the present invention
The pH is from 8 to 12, more preferably from 9 to 11.

As a method for producing the liquid detergent composition of the present invention, any mixing technique suitable for the method for producing a liquid detergent composition can be used. In particular, as mentioned above, (b)
It is preferable to add and mix an alkanolamine salt in an amount of 20% by weight or more, preferably 40% by weight or more of the total amount of the components. It is possible to add an alkali metal salt, an alkaline earth metal salt, or the like as an anionic surfactant, and then add a large amount of an alkanolamine to carry out ion exchange. However, the composition may become opaque, which is not preferable.

[0021]

The concentrated liquid detergent composition of the present invention is characterized by exhibiting excellent detergency with a small amount of use and exhibiting excellent solution stability over a wide temperature range from low to high temperatures.

[0022]

EXAMPLES The present invention will be described below in detail with reference to examples, but the present invention is not limited to these examples.

Example 1 The components shown in Table 1 were mixed by a batch method to produce a liquid detergent composition having a pH of 9.3 to 9.6. The following evaluation was performed about each obtained liquid detergent composition. (1) Storage stability Place the sample in a screw tube (diameter 4 cm, height 10 cm)
C., 40.degree. C., room temperature, -5.degree. C., and -20.degree. C., and one month after each storage, the presence or absence of consolidation, separation, and precipitation was visually determined, and the following evaluation was made. Table 1 shows the results. ：: Uniform transparent liquid. X: An opaque liquid or solidification, separation or precipitation occurred.

[0024]

[Table 1]

Note) * 1: Alkyl glucoside in the general formula (I) represents the structure of R ₁ = C ₉ -C ₁₁ , x = 0, y = 1.35 G: glucose residue. * 2: Monoethanolamine is added to adjust pH. * 3: B is the balance amount to make the whole 100.

Continuation of the front page (51) Int.Cl. ⁶ Identification symbol FI C11D 1:12) (56) References JP-A-52-101212 (JP, A) JP-A-56-20098 (JP, A) 3-128999 (JP, A) (58) Fields investigated (Int. Cl. ⁶ , DB name) C11D 1/83 C11D 17/00 C11D 1:68 C11D 1:72 C11D 1:12 WPI / L (QUESTEL)

Claims (1)

(57) [Claims] 1. A liquid detergent composition comprising the following components (a) to (d) and having a content of an alkali metal and / or an alkaline earth metal of 1.4% by weight or less. (a) having an alkyl group or alkenyl group having an average carbon number of 6 to 20, and having an average ethylene oxide mole number of 1 to 2;
0, having a polyoxyalkylene alkyl or alkenyl ether having an average addition mole number of propylene oxide of 0 to 5 and / or a substituted alkyl group or alkenyl group having an average carbon number of 6 to 20; 20, polyoxyalkylene alkyl or alkenyl phenyl ether having an average number of moles of propylene oxide of 0 to 5 (b) mono- or diethanolamine salt-type sulfonate-type or sulfate-type anionic surfactant, provided that (a) +
(b) is 30 to 75% by weight, and (b) / (a) = 1 /
2 to 2/1. (c) Alkyl polysaccharide surfactant 5 to 20% by weight (d) Phase control agent having no surfactant other than water 1 to 15% by weight, provided that at least 20% by weight of the total amount of component (b) is monoethanolanol
Triethanolamine salt of sulfonate-type or sulphate type Ani
An surfactant, and (d) component and water in the composition .
The total amount is 30% by weight or less.