JPH07126689A - Detergent - Google Patents

Abstract

PURPOSE:To obtain a detergent, capable of increasing foaming power and detergency due to mutual synergistic effects. CONSTITUTION:This detergent contains (A) one or two or more sugar ester- based surfactants comprising 6-22C fatty acids and saccharides selected from disaccharides composed of dihexoses and 4-6C sugaralcohols and (B) one or two or more selected from anionic surfactants having COO<->, OSO3<-> or SO3<-> group at (1/5) to (5/1) (wt./wt.) ratio of the components (A)/(B) in the total amount of the components (A) and (B) within the range of 5-50wt.%.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a detergent excellent in basic surface activity such as foaming power, emulsifying power, solubilizing power and dispersing power.

[0002]

2. Description of the Related Art Conventionally, for laundry detergents, kitchen detergents, hair detergents, and body detergents, a detergent composition has been established according to the type of object to be washed and the type of stain, and any of these types of detergents can be used. The main ingredients of the agent are foaming power, emulsifying power,
Anionic surfactants having excellent basic surface activity such as solubilizing power and dispersing power have been mainly used. For laundry detergents, alkaline agents, chelating builders, fluorescent agents, bleaching agents,
In kitchen detergents and hair detergents such as enzymes, fatty acid alkanolamides and alcohol ethoxylate nonionic surfactants have been used together from the viewpoint of foaming power and detergency.

However, these combinations are equal to or less than the cumulative results in each performance of each component, and are not expected to have the effect of increasing the ability of the anionic surfactant as the main component.

[0004]

DISCLOSURE OF THE INVENTION The present invention relates to an anionic surfactant which is a main component of a detergent which requires basic surface activity such as foaming power, emulsifying power, solubilizing power and dispersing power. The purpose of this is to enhance the surface activity of the, and specifically to improve the foaming power and the cleaning power.

[0005]

Means for Solving the Problems As a result of intensive studies to solve the above problems, the present inventor has (A) a disaccharide consisting of a fatty acid having 6 to 22 carbon atoms and dihexose, and a sugar alcohol having 4 to 6 carbon atoms. One or more sugar ester surfactants composed of saccharides selected from (B) -COO ^- ,-
A ratio of (A) / (B) component ratio of 1/5 to 5/1 (w / w) of one or more kinds selected from anionic surfactants having an OSO ₃ ⁻ or —SO ₃ ⁻ group. It was discovered that a strong synergistic effect on foaming power and detergency is exhibited when these are combined, and the present invention has been achieved.

The sugar ester type surfactant which is the component (A) of the present invention is synthesized from a fatty acid derivative having 6 to 22 carbon atoms such as a fatty acid or a fatty acid ester, a disaccharide and a sugar alcohol.

Here, the fatty acid, whether saturated or unsaturated,
It may be straight-chain or branched. Specific examples of such fatty acids include, for example, caproic acid, caprylic acid,
Capric acid, lauric acid, myristic acid, palmitic acid, stearic acid, caproic acid, lauroic acid,
Myristoleic acid, palmitoleic acid, oleic acid, methylundecanoic acid and the like can be mentioned. Preferred fatty acid residues are sugar alcohol esters having 8 to 12 carbon atoms,
A disaccharide ester having 10 to 14 carbon atoms.

As the fatty acid derivative, a fatty acid ester of the above fatty acid and a lower alcohol is used, and examples thereof include methyl ester, ethyl ester and propyl ester of the above fatty acid.

As disaccharides composed of dihexose, reducing disaccharides such as maltose, cellobiose, lactose, isomaltose, gentiobiose, nigerose,
Sophorose and non-reducing disaccharides include sucrose and trehalose.

As the sugar alcohol, erythritol,
Examples thereof include ribitol, xylitol, allitol, sorbitol, mannitol, galactitol and the like.

In the present invention, the sugar ester type surfactant as the component (A) is preferably composed mainly of a monoester type in which one fatty acid residue is bonded in one molecule of sugar, and a polyester of triester or more is used. It is preferably 1% by weight or less.

[0012] Further, as an anionic surfactant (B) component, -COO ^- surfactant having a group (acid type), - OSO ₃ ^- surfactant having a group (sulfate salt) or - A surfactant having a SO ₃ ⁻ group (sulfonate type) is used, and the following can be mentioned as specific examples. (1) Carboxylate-based anionic surfactant-C _{10 to} C ₁₈ fatty acid salt-Ester moiety having 3 to 15 carbon atoms succinic acid monoalkyl ester salt-Ether carboxylate represented by the following chemical formula 1

[Chemical 1]

[Chemical 2] (2) Sulfate ester-based anionic surfactant-C _{10 to} C ₁₈ alkyl sulfate-Alkyl (or alkenyl) alkyl (or alkenyl) polyethoxysulfate having 10 to 18 carbon atoms (average number of moles of ethylene oxide added p = 2 to 7) (3) Sulfonic acid type anionic surfactant-C _{10 to} C ₁₈ alkane sulfonic acid type-C _{10 to} C ₁₈ olefin sulfonic acid type-Alkylbenzene having an alkyl group of C _{8 to} C ₁₈ Sulfonate-Sulfonates of fatty acid lower alkyl esters having 8 to 20 carbon atoms in the fatty acid residue (α-sulfofatty acid lower alkyl ester salts): These salts include alkali metal salts and alkaline earth metal salts. , Ammonium salts, alkanolamine salts and the like are used.

In addition, other anionic surfactants, nonionic surfactants, cationic surfactants, amphoteric surfactants, alkylamine oxides, alkanolamines, fatty acid alkanolamides, hydrotropes, ion sequestering agents, antibacterial agents. , Dyes, fragrances, etc. can be added.

According to the detergent composition of the present invention, (A) one or more sugar ester surfactants and (B)
One or more of the anionic surfactants are (A) /
(B) component ratio is 1/5 to 5/1 (w / w), and
By using together (A) + (B) in the range of 5 to 50% by weight, excellent foaming power and detergency can be obtained.

[0015]

Experimental Example 1 Preparation of octanoyl-mannitol ester and octanoyl-sorbitol ester

Mannitol 101.1 g (0.56 mo
le) and methyl octanoate 438.5 g (2.78 m)
ole) to a mixture of β-picoline 50 as a reaction solvent
0 g was added, and the mixture was stirred at 70 ° C. Immobilized lipase SP-382 derived from Candida antarctica as catalyst
(Novo) was added. Decompression (45 mmHg)
Stirring was continued while removing by-produced methanol by a partial condenser. Stop the reaction after 5 hours,
The enzyme was removed by suction filtration. About 3/4 of the reaction solvent and unreacted methyl ester were removed by vacuum distillation, and
Recrystallization was performed using twice the amount of hexane. As a result, 3%
Octanoyl-mannitol monoester containing mannitol (160 g) was obtained. The diester content in the product was less than 1%.

Mannitol and sorbitol 101.1 g
(0.56 mole), and transesterification reaction and ester purification were carried out by the same procedure. as a result,
Octanoyl-sorbitol monoester (170 g) containing 5% sorbitol was obtained. The diester content in the product was less than 1%.

[0018]

Experimental Example 2 Dodecanoyl-maltose ester and dodecanoyl-
Preparation of sucrose ester

201.8 g (0.56 m) of anhydrous maltose
ole) and dodecanoic acid 557.0 g (2.78 mol)
700 g of β-picoline as a reaction solvent in the mixture of e)
Was added and stirred at 70 ° C. As catalyst SP-38
20 g of 2 was added. Stirring was continued while removing by-product water with a partial condenser under reduced pressure (50 mmHg). The reaction was stopped after 15 hours and the enzyme was removed by suction filtration. From the obtained reaction solution, the reaction solvent was removed by ordinary vacuum distillation (90 ° C., 1 mmHg), and further 5
Recrystallization was performed using twice the amount of hexane. As a result, 1%
Dodecanoyl-maltose monoester with maltose (280 g) was obtained. The diester content in the product was below 1% (GLC analysis).

191.7 g of sucrose with maltose
(0.56 mole) was changed, and an ester was prepared by the same procedure. As a result, decanoyl-sucrose monoester containing 0.5% sucrose (270 g)
was gotten.

The present invention is demonstrated in the following examples using the various sugar ester type surfactants obtained in Experimental Examples 1 and 2.

[0022]

[Example 1] -Foaming test-Liquid lanolin 0.2 was used as a model soil for hair cleansing agents.
Collect g in an Epton tube (100 ml). Further (a) 0.
Add 10 ml of 9% sugar ester surfactant and 10 ml of (b) 0.9% anionic surfactant, and add 2 for 10 seconds at room temperature.
Shake 0 times. The foam height (ml) at the time when the interface between the aqueous solution and the foaming became clear was measured. The results are shown in Table 1.

[0023]

Examples 2 to 8 and Comparative Examples 1 to 3 Liquid detergent compositions having the compositions shown in Table 2 were prepared and the oily dirt cleaning power and butter dirt cleaning power were evaluated by the following methods. The results are also shown in Table 2.

-Determination of oily dirt-Soybean oil and beef tallow 10g each specified by the Japanese Pharmacopoeia 60m
0.1 g of oil red after dissolving in l of chloroform
Add and mix well to prepare a soil solution. A glass plate is soaked in this solution to contaminate it and air-dried at a temperature of 25 ° C. for 30 minutes or more to remove chloroform to prepare a piece of dirt (amount of dirt 20 to 23 mg / sheet). 25 pieces of 6 pieces of this dirt
250 in 700 ml of 0.15 wt% detergent solution
After washing by stirring for 3 minutes at a rotation speed of rpm, air drying was performed and the weight was measured, and the oil removal rate after washing was calculated by the following formula to obtain the washing power.

-Butter dirt cleaning power- An aqueous solution containing 0.15% by weight of the composition was prepared, and 3 liters thereof were placed in a vat having a diameter of 30 cm and a depth of 12 cm,
The operation of compressing the air-containing sponge in the liquid at a liquid temperature of 25 ° C is repeated 10 times to create a foam, and then 0.5 g of butter is applied to each side of the dish 10 times and the back side is 5 times each. The washing power was defined as the number of dishes that could be washed until the foam height reached 3 mm.

[0026]

Examples 9 to 11 and Comparative Examples 4 to 6 -Washing Experiment- Heavy powder consisting of 15% surfactant (nonionic / LAS = 1/1), 15% zeolite, 20% potassium carbonate, and 50% Ash. A detergent was prepared and a washing experiment was conducted at a concentration of 8.3 g / l.

The washing experiment was carried out under the following conditions: Terg-0
Carried out in a -meter. Temperature: 25 ° C Time: 10 minutes Water: 3 ° DH

The residual amount of fatty acid after washing was measured by Soxhlet extraction and shown in Table 3 as the amount of residual fatty acid. The fatty acid content in the cloth to be washed before washing was 2.87%.

From the results of Tables 1, 2, and 3, the detergents according to the present invention in which the sugar ester-based surfactant and the anionic surfactant are combined are capable of increasing foaming power and detergency due to their synergistic effects. Was confirmed.

[0030]

[Table-1]

[0031]

[Table-2]

[0032]

[Table-3]

Claims (1)

[Claims] 1. One or more kinds of (A) a disaccharide composed of a fatty acid having 6 to 22 carbon atoms and a dihexose, and a sugar ester surfactant composed of a sugar selected from a sugar alcohol having 4 to 6 carbon atoms. ^{If, (B) -COO -, -OSO} 3 - or -
One or two or more selected from anionic surfactants having SO ₃ ⁻ groups, the ratio of (A) / (B) components is 1/5 to 5 /
1 (w / w) and 5 to 50% by weight of (A) + (B)
A cleaning agent characterized by being contained in the range of.