JPH0665717B2 - Liquid detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention has excellent foaming power, detergency and low temperature stability,
Moreover, it relates to a liquid detergent composition having a low viscosity.

As basic performance of liquid detergents such as dishwashing detergents, it is required that they have excellent detergency, excellent foaming ability, low irritation to skin, etc., and in order to satisfy these performances at present, For example, a liquid detergent containing an anionic surfactant and a nonionic surfactant as a main component is provided. Of these nonionic surfactants, tertiary amine oxides are known to have extremely excellent effects (Japanese Examined Patent Publication Nos. 39-14979 and 38-3264).
issue).

However, when a tertiary amine oxide and an anionic surfactant are used in combination to form a liquid detergent, there are drawbacks that the low temperature stability is generally poor and the viscosity is high.
In order to prevent this drawback, blending of ethanol and paratoluene sulfonate is carried out, but a small amount of blending is not effective, and when blended in a large amount, the feeling of foam deteriorates and there is a risk of ignition. The problem of increase arises.

As a result of intensive studies to improve these problems, the present inventors have found that a liquid detergent containing an anionic surfactant and a tertiary amine oxide has a specific α-sulfo fatty acid salt (mono and / or Or a di-salt), it is found that a liquid detergent composition having excellent foaming performance and cleaning performance, good low temperature stability, and an appropriate viscosity can be obtained.
The present invention has been completed.

That is, the present invention provides the following three components, (A), (B) and (C), (A) polyoxyethylene alkyl ether sulfate,
10 to 40% by weight of one or more anionic surfactants selected from the group consisting of alkylbenzene sulfonates, α-olefin sulfonates, alkane sulfonates and ether carboxylates, (B) Formula (I), (Wherein R ₁ represents an alkyl group having 10 to 18 carbon atoms or an alkyl group, and R ₂ and R ₃ represent an alkyl group having 1 to 2 carbon atoms) 0.2 to 5% by weight of a tertiary amine oxide (C) The following formula (II) [In the formula, R ₄ represents an alkyl group or an alkenyl group having 4 to 8 carbon atoms, and X and Y each represent a hydrogen atom, an alkali metal, ammonium or a water-soluble alkanolamine (except when both are hydrogen atoms). ] A liquid detergent composition containing 0.2 to 5% by weight of an α-sulfo fatty acid salt represented by

Conventionally, some α-sulfo fatty acid derivatives have been used as one component of detergents. That is, Japanese Patent Publication No.
No. 189 describes the use of a compound in which R ₄ in the formula (II) is represented by a hydrocarbon group having 6 to 22 carbon atoms as a viscosity reducing agent for liquid or pasty fatty alcohol sulfate. There is. Further, in Japanese Examined Patent Publication No. 45-2304, a compound in which R ₄ in the formula (II) is a hydrocarbon group having 8 to 10 carbon atoms is added to a liquid or paste soap as a viscosity reducing agent, Furthermore, JP-A-53-41310 describes that a compound represented by the formula (II) in which R ₄ is a hydrocarbon group having 8 to 20 carbon atoms is used as a cleaning active main component of a cleaning agent. Has been done. However, in the above publication, there is no mention of the viscosity-reducing and low-temperature stabilizing effects when a liquid detergent containing a specific anionic surfactant and a tertiary amine oxide used in the present invention is blended with an α-sulfo fatty acid salt. It has not been.

On the other hand, JP-A-50-151905 describes the use of an α-sulfofatty acid ester salt having 6 to 24 carbon atoms as a detergent. However, these ester salts have insufficient viscosity and low temperature stabilizing effects in the system of the present invention containing a specific anionic surfactant and a tertiary amido oxide.
Moreover, the same publication describes that the α-sulfofatty acid salt of the present invention has a bad effect when incorporated into a detergent, and therefore, if it is contained as an impurity, it is preferably purified and removed.

In such a situation, if a small amount of the α-sulfo fatty acid salt represented by the formula (II) is added to a system containing a specific anionic surfactant and a tertiary amine oxide, excellent viscosity reducing and low temperature stabilizing effects can be obtained. That is a surprising new finding.

The anionic surfactant which is the component (A) of the liquid detergent composition of the present invention is a polyoxyethylene alkyl ether sulfate, an alkylbenzene sulfonate, an α-olefin sulfonate, an alkane sulfonate or an ether. Although it is a carboxylate, polyoxyethylene alkyl ether sulfate is preferable from the viewpoint of skin mildness.

Preferred polyoxyethylene alkyl ether sulfates include the following formula (III), R ₅ -OCH ₂ CH ₂ OmSO ₃ M (III) (wherein R ₅ is an alkyl group or an alkenyl group having 8 to 18 carbon atoms). , M represents an alkali metal, ammonium or an alkanolamine, and m represents a number of 1 to 5). In addition, as a preferable alkylbenzene sulfonate, the following formula (IV): (In the formula, R ₆ represents an alkyl group having 10 to 16 carbon atoms, and M ′ represents an alkali metal, ammonium or alkanolamine). Further, preferable ether carboxylates include the following formula (V), R ₇ CH ₂ CH ₂ OnCH ₂ COOM ″ (V) (wherein R ₇ is an alkyl group or an alkenyl group having 8 to 16 carbon atoms, ″ Represents sodium, potassium or alkanolamine, and n represents a number of 1 to 5).

The liquid detergent composition of the present invention contains 10 to 40% by weight (hereinafter simply referred to as%) of the anionic surfactant.

In the tertiary amine oxide (I) which is the component (B) of the liquid detergent composition of the present invention, the long-chain alkyl group or alkenyl group represented by R ₁ has a longer chain from the viewpoint of detergency. 12 carbon atoms is preferable from the viewpoint of foaming power.
In view of the fact that the one having the shortest chain is preferable from the viewpoint of low temperature stability and the like, the one having 10 to 18 carbon atoms is used. The tertiary amine oxide is blended in the liquid detergent composition of the present invention in an amount of 0.2 to 5%.

The α-sulfo fatty acid salt which is the component (C) of the liquid detergent composition of the present invention can be obtained, for example, by reacting a fatty acid having 6 to 10 carbon atoms with sulfuric anhydride to form a water-soluble salt.
Examples of the water-soluble salt include alkali metal salts, mono-, di-, or triethanolamine salts and ammonium salts. Here, the α-sulfofatty acid salt means a mono- or di-salt of α-sulfofatty acid, or a mixture thereof. The liquid detergent composition of the present invention contains 0.2 to 5% of α-sulfo fatty acid salt.

The liquid detergent composition of the present invention is prepared by dissolving the above three components in water or the like by a conventional method.

In the liquid detergent composition of the present invention, in addition to the above essential components, nonionic activators such as polyoxyalkylene alkyl (or polyoxyalkylene alkylphenyl) ethers and fatty acid alkylolamides; alkyl betaines, alkyl sulbobetaines Amphoteric active agents such as; solubilizers, hydrotrobes, clouding agents, chelating agents, preservatives, pigments, fragrances,
UV absorbers, oxidation stabilizers, thickeners, etc. can be added.

The liquid detergent composition of the present invention can be mainly used as a detergent for dishes, cooking utensils, foods, homes, clothes (light), shampoo, etc., but is not limited thereto.

The present invention will be described below with reference to examples.

Example 1 A liquid detergent composition having the following composition was prepared, and its turbidity temperature and viscosity were measured. The results are shown in Table 2.

〔composition〕

Sodium polyoxyethylene alkyl sulfate [EO = 2,
= 12 (Straight line rate 85%)] 20% Lauryl dimethylamine oxide 10 Solubilizer (Table 1) Water balance As is clear from the above results, addition of a small amount of α-sulfocapric acid / sodium salt can reduce the viscosity of the liquid detergent composition and stabilize it at low temperature.

Example 2 A liquid detergent composition having the composition shown in Table 3 was prepared, and its detergency, foaming ability and low temperature stability were examined.

〔Test method〕

(B) Detergency 0.1% of Sudan H (red pigment) was added to beef tallow as an indicator, and 5g of this was applied to a porcelain dish, 10g of detergent,
Scraped with a sponge soaked with 20 g of water and shown with the number of dishes washed until no more beef tallow is removed from the dishes.

(B) Foaming power Measure the foaming power when 0.1% of commercially available butter is added as a stain component to a detergent solution having a detergent concentration of 0.5%. The measuring method is the above detergent solution 40c in which butter is added to a glass cylinder with a diameter of 5 cm.
Add c, stir for 10 minutes, and measure the bubble height at the stop diameter.

(C) Low-temperature stability Evaluate after storing the sample in a thermostatic chamber at -5 ° C for 10 days.

Rating Content ○: No change △: Slightly cloudy ×: Separation or precipitation (In the table, B means balance.) Example 3 A liquid detergent composition having the following composition was prepared, and its detergency, foaming power and low temperature stability were examined in the same manner as in Example 2. The results are shown in Table 4.

[Composition] Sodium polyoxyethylene alkyl sulfate (EO = 2,
= 12) 20% Lauryl dimethylamine oxide 3 α-sulfo fatty acid derivative (Table 4) Water balance (In the table, composition numbers 22 to 26 are products of the present invention, and others are comparative products.) Reference Example 1 A liquid detergent composition having the following composition was prepared, and its cleaning power and foaming power were evaluated in Example 2 I examined it in the same way. The results are shown in Table 5.

〔composition〕

Sodium polyoxyethylene alkyl sulfate (EO = 2,
= 12) 20% coconut fatty acid diethanolamide 5 α-sulfo fatty acid derivative 2 water balance [Result] As is clear from the above results, the effect of the present invention is (A),
This is due to the combination of the three components of (B) and (C). If the tertiary amine oxide, which is the component (B), is replaced with another amine, the detergency and foaming power will decrease.

Claims (4)

[Claims] 1. The following three components (A), (B) and (C), (A) polyoxyethylene alkyl ether sulfate,
10 to 40% by weight of one or more anionic surfactants selected from the group consisting of alkylbenzene sulfonates, α-olefin sulfonates, alkane sulfonates and ether carboxylates, (B) Formula (I), (Wherein R ₁ represents an alkyl group having 10 to 18 carbon atoms or an alkyl group, and R ₂ and R ₃ represent an alkyl group having 1 to 2 carbon atoms) 0.2 to 5 parts by weight of tertiary amine oxide % (C) The following formula (II) [In the formula, R ₄ represents an alkyl group or an alkenyl group having 4 to 8 carbon atoms, and X and Y each represent a hydrogen atom, an alkali metal, ammonium or a water-soluble alkanolamine (except when both are hydrogen atoms). ] A liquid detergent composition containing 0.2 to 5% by weight of an α-sulfo fatty acid salt represented by: 2. A component (A) has the following general formula (III): R ₅ —OCH ₂ CH ₂ OmSO ₃ M (III) (wherein R ₅ is an alkyl group or alkenyl group having 8 to 18 carbon atoms). , M is an alkali metal, ammonium or alkanolamine, and m is a number of 1 to 5). The liquid detergent composition according to claim 1, which is a polyoxyethylene alkyl ether sulfate. 3. The component (A) has the following general formula (IV): The liquid according to claim 1, which is an alkylbenzene sulfonate represented by the formula: wherein R ₆ represents an alkyl group having 10 to 16 carbon atoms and M ′ represents an alkali metal, ammonium or alkanolamine. Cleaning composition. 4. A component (A) is represented by the following general formula (V), R ₇ CH ₂ CH ₂ OnCH ₂ COOM ″ (V) (wherein R ₇ is an alkyl group or an alkenyl group having 8 to 16 carbon atoms). , M ″ represents sodium, potassium or an alkanolamine, and n represents a number of 1 to 5). The liquid detergent composition according to claim 1.