JP2007169438A - Liquid cleanser composition for hard surface - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a liquid cleanser composition which is excellent in oil cleansing ability, skin mildening property, and low temperature stability. <P>SOLUTION: This liquid cleanser composition is characterized by comprising (a) an anion surfactant, (b) an amphoteric surfactant and/or a semi-polar surfactant, (c) one or more nonionic surfactants selected from higher fatty acid monoethanolamide alkylene oxide adducts and alkylpolyglucosides, (d) a higher aliphatic alcohol alkylene oxide adduct, and (e) an alkaline earth metal salt, and having (f) a (a) wt.%/(d) wt.% ratio of 0.2 to 1.2, and (g) pH of 3 to 6 at 25°C. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a liquid detergent composition suitable mainly for tableware, sinks and the like, and more particularly to a hard surface liquid detergent composition excellent in oil detergency, skin mildness and low temperature stability.

Generally, the liquid detergent composition for hard surfaces used for tableware etc. contains an anionic surfactant and an amphoteric surfactant or a semipolar surfactant, and these improve the oil detergency by forming a complex. be able to. By such means as lowering the pH of the liquid detergent composition, the cationization of the amphoteric surfactant / semipolar surfactant is promoted, and the oil detergency can be further improved. For example, Patent Document 1 includes an anionic surfactant, a mono-linear alkyl tertiary amine oxide, a water-soluble inorganic salt, a water-soluble abrasive, a cleaning power, a polishing power, and a mild hand-containing abrasive. A cleaning composition is disclosed.
However, when the pH of the liquid detergent composition is lowered, the oil detergency is improved, but the low temperature stability is deteriorated.
Conventionally, an anionic surfactant, a nonionic surfactant, an amphoteric surfactant, and a hydrotrope have been used in appropriate combinations in order to improve low temperature stability. For example, in Patent Document 2, low temperature stability is improved by adding and blending polyoxyalkylene fatty acid amide, fatty acid alkanolamide, fatty acid or a salt thereof. In Patent Document 3, low temperature stability is improved by containing a polyoxyalkylene fatty acid amide and an amine oxide type surfactant.
The liquid detergent compositions and the like described in each of these documents do not always satisfy low temperature stability, skin mildness, and oil detergency simultaneously.

Sho-63-41598 Japanese Patent Laid-Open No. 2003-96490 Japanese Patent Laid-Open No. 2003-138292

  An object of this invention is to provide the liquid detergent composition excellent in oil detergency, skin mildness, and low temperature stability.

The present invention is selected from the group consisting of (a) anionic surfactants, (b) amphoteric surfactants and / or semipolar surfactants, (c) higher fatty acid monoethanolamide alkylene oxide adducts and alkyl polyglucosides. One or more nonionic surfactants, (d) a higher aliphatic alcohol alkylene oxide adduct, and (e) an alkaline earth metal salt,
(f) (a) wt% / (d) wt% ratio is 0.2 or more and less than 1.2,
(g) Provided is a liquid detergent composition having a pH of 3 or more and less than 6 at 25 ° C.

  ADVANTAGE OF THE INVENTION According to this invention, the liquid detergent composition suitable for tableware, a sink, etc. excellent in oil detergency, skin mildness, and low temperature stability can be provided. The liquid detergent composition of the present invention is also excellent in the solubility of calcium carbonate which is a scale component of the sink.

Component (a) Anionic surfactant The anionic surfactant used in the present invention includes polyoxyethylene alkyl ether sulfate, alkyl sulfate, alkane sulfonate, α-olefin sulfonate, alkyl benzene sulfone. Acid salts, alkylnaphthalene sulfonates, alkyl phosphates, polyoxyethylene alkyl ether phosphates, soaps, amide ether carboxylates and the like. These can be used alone (one kind) or in combination of two or more kinds. Preferably, from the viewpoint of detergency, polyoxyethylene alkyl ether sulfates (preferably polyoxyethylene alkyl ether sulfates having 8 to 18 carbon atoms and 0.5 to 5 average EO added moles), alkyl sulfates ( Preferably, the alkyl sulfate salt having 8 to 18 carbon atoms), alkane sulfonate (preferably alkane sulfonate having 8 to 18 carbon atoms), α-olefin sulfonate (preferably α-carbon having 8 to 18 carbon atoms). Olefin sulfonates) and alkylbenzene sulfonates (preferably alkylbenzene sulfonates having 8 to 18 carbon atoms) are desirable. Among them, polyoxyethylene alkyl ether sulfates having 10 to 16 carbon atoms and 1 to 4 average EO addition moles, alkyl sulfate esters having 10 to 16 carbon atoms, and α-olefin sulfonates having 10 to 16 carbon atoms. preferable.
The content of the component (a) in the liquid detergent composition of the present invention is preferably 2 to 30%, more preferably 3 to 20%, still more preferably 8 to 16%, based on the total mass of the composition. It is. (A) If the component content is less than 2%, oil detergency and foamability may be reduced. If it exceeds 30%, the mildness of the skin is deteriorated and the handling property may be deteriorated.

Component (b) Semipolar Surfactant Examples of the semipolar surfactant used in the present invention include, for example, alkyldimethylamine oxide (carbon number of alkyl group: 8 to 16), alkylamidopropyldimethylamine oxide (alkyl group Carbon number: 8-16), the compound etc. which are represented with the following general formula (I) or (II) are mention | raise | lifted.

[Wherein R1 is selected from an alkyl group having 8 to 16 carbon atoms, a hydroxyalkyl group, an acylamidoalkyl group and an alkylphenyl group, AO is an oxyalkylene group having 2 to 4 carbon atoms, n is 0 to 3, R2 And R3 may be the same or different and are selected from an alkyl group having 1 to 3 carbon atoms, a hydroxyalkyl group, and a polyoxyalkylene group. ]

[Wherein, R4 is a linear alkyl group or alkenyl group having 8 to 16 carbon atoms, and R6 and R7 are each independently an alkyl group or hydroxyalkyl group having 1 to 3 carbon atoms. R5 is an alkylene group having 1 to 5 carbon atoms, and X is a group selected from -COO-, -CONH-, -OCO-, -NHCO-, and -O-. ]
Of these, alkyldimethylamine oxide is particularly preferred from the viewpoint of oil detergency. More particularly, alkyldimethylamine oxide having 10-14 carbon atoms in the alkyl group and alkylamidopropyldimethylamine oxide having 10-14 carbon atoms in the alkyl group are particularly preferable.

Component (b) Amphoteric surfactant Examples of the amphoteric surfactant used in the present invention include amphoteric surfactants represented by the following general formulas (III) and (IV).

Wherein, R8 represents an alkylene group having 1 to 3 carbon atoms, Y is --SO3 ^- or -COO ^- indicates, R1, R2 and R3, the same meanings as those shown in the above general formula (I) . ]

[Wherein R4 represents the same as shown in the general formula (II), R2 and R3 represent the same as those shown in the general formula (I), and R8 and Y represent the above general formula (IV ) Is the same as shown in ]
Examples thereof include alkylbetaines, alkylhydroxysulfobetaines, alkylamidobetaines, imidazolinium betaines, N-alkylamino acids, lauric acid amidopropyldimethylaminoacetic acid betaines. Of these, particularly preferred is betaine lauryl amide dimethylaminoacetate from the viewpoint of oil detergency.
The content of the component (b) in the liquid detergent composition of the present invention is preferably 1 to 10%, more preferably 1 to 8%, still more preferably 2 to 5% based on the total mass of the composition. It is. (B) If the component content is less than 1%, the detergency may be reduced, and if it exceeds 10%, the low temperature stability may be deteriorated.
The component (b) is most preferably alkyldimethylamine oxide from the viewpoint of detergency.

Component (c) Higher fatty acid monoethanolamide alkylene oxide adduct The higher fatty acid monoethanolamide alkylene oxide adduct used in the present invention includes a compound represented by the following formula (IV).

In the formula (IV), R9 is an alkyl group or alkenyl group having 8 to 16 carbon atoms, preferably 12 to 14 carbon atoms. R9 may be linear or branched, may be saturated or unsaturated, and may optionally contain a substituent such as a hydroxyl group. AO is an alkylene oxide having 2 to 4 carbon atoms, and EO is ethylene oxide. m is the average added mole number of alkylene oxide, and n is the average added mole number of ethylene oxide. m and n are each a number of 0 to 5, and m + n is 1 to 6. It is preferable that m = 0 and n = 2-5.
Specifically, polyoxypropylene (1) lauric acid monoethanolamide, polyoxypropylene (1) polyoxyethylene (2) lauric acid monoethanolamide, polyoxyethylene (2) lauric acid monoethanolamide, polyoxyethylene (5) Myristic acid monoethanolamide, polyoxyethylene (5) coconut oil fatty acid monoethanolamide, polyoxypropylene (2) coconut oil fatty acid monoethanolamide, polyoxypropylene (2) coconut oil fatty acid monoethanolamide, etc. can give. These may be included singly or in combination of two or more.
Particularly, R9 is preferably an alkyl group having 12 carbon atoms, m is 0 to 1, and n is 1 to 3 in that the balance between low temperature stability and oil detergency is excellent. Most preferred is polyoxyethylene (2) lauric acid monoethanolamide.

(C) Component Alkyl polyglucoside The alkyl polyglucoside used in the present invention includes a compound represented by the following formula (VI).
R4- (OR5) n-Zm (VI)
[Wherein R4 and R5 are the same as those shown in the general formula (II), Z is a residue derived from a reducing sugar having 5 to 6 carbon atoms, and n is an average value of 0 to 5] , Preferably a number from 1 to 4, m represents a number whose average value is from 1 to 10, preferably from 1 to 6. ]
Preferable examples of the alkylpolyglucoside of the formula (VI) include R4 = C10-12 alkyl, n = 2, m = 1.5, R4 = C12-14 alkyl, n = 4 , M = 1.1, and the like.
The content of the component (c) in the liquid detergent composition of the present invention is preferably 1 to 15%, more preferably 3 to 10%, still more preferably 5 to 10% based on the total mass of the composition. It is. (C) If the component content is less than 1%, foaming and foam persistence may be reduced, and if it exceeds 15%, low-temperature stability may be deteriorated.
As the component (c), polyoxyethylene (2) lauric acid monoethanolamide is more preferable than C12 alkyl polyglucoside from the viewpoint of low-temperature stability.

(d) Higher aliphatic alcohol alkylene oxide adduct The higher aliphatic alcohol alkylene oxide adduct used in the present invention includes an alkylene oxide represented by the following general formula (VII).
R1-O (R2O) m- (R3O) nH (VII)
In the formula, R1 is a linear or branched alkyl or alkenyl group having 8 to 18, preferably 8 to 16, and more preferably 10 to 14 carbon atoms. R2 is a linear or branched alkyl group having 2 carbon atoms. R3 represents a linear or branched alkyl group having 3 carbon atoms.
m and n represent the average number of added moles of alkylene oxide, and are 0 to 30 (provided that m and n are not 0 simultaneously), preferably 5 to 15. When m and n are less than 5, low temperature stability may be reduced, and when the average number of added moles exceeds 30, detergency may be reduced. When m> n, the skin mildness is particularly excellent, and when m ≦ n, the oil detergency is particularly excellent.
When R2O and R3O are added, random addition or block addition may be used.
Specifically, polyoxyethylene (7) lauryl ether, polyoxyethylene (7) decyl ether, polyoxyethylene (10) lauryl ether, polyoxyethylene (10) decyl ether, polyoxyethylene (15) lauryl ether, Polyoxyethylene (15) myristyl ether, polyoxyethylene (20) lauryl ether, polyoxyethylene (20) myristyl ether, polyoxyethylene (30) lauryl ether, polyoxyethylene (3) propylene (1) lauryl ether, etc. can give.
The content of the component (d) in the liquid detergent composition of the present invention is preferably 10 to 25%, more preferably 10 to 20%, still more preferably 12 to 20%, based on the total mass of the composition. It is. When the content of the component (d) is less than 10%, the foam persistence may be lowered or the low-temperature stability may be deteriorated, and when it exceeds 25%, gelation may occur.

(e) Alkaline earth metal salt The alkaline earth metal salt used in the present invention is not particularly limited as long as it is a compound that generates an alkaline earth metal ion that is generated when dissolved in a hard surface cleaning composition. Can be used.
Specific examples include magnesium chloride, magnesium sulfate, magnesium nitrate, magnesium acetate, calcium chloride, calcium hypophosphite, calcium nitrate, and hydrates thereof. It is most preferable from the viewpoint of stability to blend as magnesium sulfate or magnesium chloride hydrate.
The content of the component (e) in the liquid detergent composition of the present invention is preferably 0.01 to 10% by mass, more preferably 0.1 to 5% by mass, and still more preferably 0.5 to 5%, based on the total mass of the composition. 2% by mass. When the content of the component (e) is less than 0.01%, the detergency may be reduced, and when it exceeds 10%, the low temperature stability may be deteriorated.

(F) (a) / (d)
(a) / (d) = 0.2 to 1.2, preferably (a) / (d) = 0.3 to 1.0, more preferably (a) / (d) component (AI weight%) a) / (d) = 0.7 to 1.0. If (a) / (d) = 0.2 or less, the oil detergency may be poor, and if (a) / (d) = 1.2 or more, the skin mildness may be inferior.

(g) pH at 25 ° C
The pH of the liquid detergent composition of the present invention at 25 ° C. is 3.0 to less than 6.0, preferably 4.0 to less than 6.0, and more preferably 5.0 to less than 6.0. If the pH is 6.0 or more, the oil detergency and calcium carbonate solubility may decrease, and if it is less than 3.0, the low-temperature stability may deteriorate.

The solvent is preferably water (purified water, distilled water, ion-exchanged water, pure water, ultrapure water, etc.), and other liquid solvents such as lower alcohols and glycols can also be used.
The liquid detergent composition of the present invention can further contain components usually used in hard surface liquid detergent compositions such as tableware. Examples of such components include nonionic surfactants other than the above (c) and (d), chelating agents such as citric acid, builders such as inorganic salts, hydrotropes such as aromatic sulfonates, and viscosity modifiers. , Coloring agents, antioxidants, preservatives, bactericides, medicinal ingredients and fragrances.
In the liquid detergent composition of the present invention, the total amount (total content) of the surfactant is preferably in the range of 30 to 50%. If the total amount is less than 30%, the oil cleaning power and foam sustainability may be reduced as a compact type liquid detergent, and if it exceeds 50%, gelation may occur.
The liquid detergent composition of the present invention can be produced by mixing the components (a) to (e) and optionally other optional components.

[Examples 1 to 9 and Comparative Examples 1 to 5]
Prepare various liquid detergent compositions with the composition shown in Table 1 below, and evaluate oil detergency, water spot detergency (evaluation based on calcium carbonate solubility), skin mildness, and low-temperature stability by the following test methods. did.
These results are shown in Table 1. In addition, the compounding quantity of Table 1 is mass% [the whole quantity is 100 mass% (the remainder is prepared with purified water), and each composition adjusts pH with 1N sodium hydroxide.

(Oil detergency evaluation method)
1 g of beef tallow was uniformly applied to a 10 cm × 15 cm tapper container to form a hydrophobic surface soil that was heavily soiled. Take 18.3cm x 7.5cm x 3cm dishwashing sponge with 38g of tap water and 2g of hard surface detergent composition and squeeze it by hand several times. Washing was done in the same way as usually done at home. After washing, it was rinsed well with tap water, and the cleaning power was evaluated based on the following evaluation criteria by the touch feeling when the contaminated surface of the tapper container was touched by hand.
Evaluation criteria:
A: When touching any part of the tapper container, there is no film due to oil, and no luster due to residual oil is felt at all.
○: When the bottom and side surfaces of the tapper container are touched, there is no film due to oil, and no luster due to residual oil is felt, but a slight luster remains at the corners.
Δ: When the bottom surface of the tapper container is touched, there is no film due to oil, and there is no feeling of sliminess due to residual oil, but there is still luster on the sides and corners.
X: It can be seen that the whole tapper container is slippery and oil remains clearly.

(Skin mildness evaluation method)
The hand was immersed to the wrist for 30 minutes a day in a bowl containing 3 liters of diluted tap water containing 1% by mass of the composition. This operation was repeated for 3 days, and the roughness of the hand on the next day was self-determined according to the following criteria.
Judgment criteria:
5 points: no rough hands 4 points: slightly rough hands 3 points: rough hands 2 points: very rough hands 1 point: very rough hands

(Low-temperature stability evaluation method)
100 g of each liquid detergent composition was sealed in a glass bottle and the change in appearance when it was allowed to stand at 50 ° C. and −5 ° C. for 1 month was evaluated according to the following evaluation criteria.
Evaluation criteria:
○: Precipitation and liquid separation do not occur. Δ: Slightly cloudy or fine precipitate is observed.
X: Precipitation or liquid separation occurs

(Calcium carbonate solubility evaluation method)
After adding 1 g of the hard surface cleaning composition to 50 ml of 0.02% calcium carbonate dispersion aqueous solution (ion exchange water) and stirring for 30 minutes, the degree of cloudiness of the solution was visually determined.
Judgment criteria:
◎: Colorless and transparent ○: Slightly white and cloudy but almost transparent △: Slightly white and cloudy ×: White and cloudy

Details of each component in Table 1 are shown below.
AES: Sodium polyoxyethylene lauryl ether sulfate (average EO addition mole number 2 mol)
AS: C12 sodium alkyl sulfate (Lion Corporation Sannol LM-1130)
AOS: alpha olefin (C14) sodium sulfonate (LION Corporation Lipolane LB-440)
LPB: lauric acid amidopropyldimethylaminoacetic acid betaine (Lion Corporation Enacol L-30B)
DDAO: Lauryl-N, N-dimethylamine oxide (Lion Akzo Alomox DM12D-W (c))
APAO: alkylamidopropyldimethylamine oxide (Kawaken Fine Chemical Co., Ltd. Softazoline LAO-C)
LME (2): Polyoxyethylene (2) Lauric acid monoethanolamide (average EO addition mole number 2 mol) (Kawaken Fine Chemical Co., Ltd. Amidette 2L-Y)
CME (5): Polyoxyethylene (5) Isopropyl fatty acid monoethanolamide (average number of added EO: 5 moles) (Kawaken Fine Chemicals Co., Ltd. Amidette 5C)
CME (0): Choshi fatty acid monoethanolamide (Amizole CME, Kawaken Fine Chemical Co., Ltd.)
APG: C12-14 alkyl polyglucoside (Dow Chemical Co. TRITON CG-110)
AE: Polyoxyethylene (15) lauryl ether (Lion Corporation Leox LC-150)
MgSO ₄ : Magnesium sulfate heptahydrate (special grade reagent grade)
CaCl ₂ : Calcium chloride dihydrate (special grade reagent grade)
CA: Citric acid (Fuso Chemical Co., Ltd. Purified citric acid (anhydrous))
PTS: p-toluenesulfonic acid (Taika Tox 300)
SB: Sodium benzoate (Fushimi Pharmaceutical Co., Ltd.)
Ethanol: (Pure Chemical Co., Ltd. reagent grade)
Gelatin: (Zelais Co., Ltd. Gelatin BLUE)

Claims (1)

(a) anionic surfactant, (b) amphoteric surfactant and / or semipolar surfactant, (c) one type selected from the group consisting of higher fatty acid monoethanolamide alkylene oxide adducts and alkylpolyglucosides Containing two or more kinds of nonionic surfactants, (d) a higher aliphatic alcohol alkylene oxide adduct, and (e) an alkaline earth metal salt,
(f) (a) wt% / (d) wt% ratio is 0.2 or more and less than 1.2,
(g) A liquid detergent composition having a pH of 3 or more and less than 6 at 25 ° C.