JPS5919599B2 - cleaning composition - Google Patents

Description

[Detailed description of the invention] CLEANING COMPOSITIONS FIELD OF THE INVENTION This invention relates to cleaning compositions.

More specifically, it has excellent foaming power, cleansing power, and skin gentleness,
The present invention also relates to a liquid cleaning composition with improved heat resistance and light resistance. Liquid detergents, such as vegetable and tableware detergents, are required to have foaming power, detergency, skin gentleness, etc. as basic properties.

In order to exhibit these various performances, alkylbenzene sulfonates, alkyl ether sulfates, α-olefin sulfonates, and the like are used as surfactants in cleaning compositions.

In particular, with alkyl ether sulfate, when the number of moles of alkylene oxide (ethylene oxide or propylene oxide) added is increased, the irritation decreases, and when the number of moles added is 3 or more, the irritation becomes extremely small. It has a contradictory characteristic that the foaming power deteriorates rapidly.

Therefore, in order to further improve these various properties, an auxiliary active agent is used in addition to the surfactant as the main component.

Typical examples of these co-activators are tertiary amine oxide and fatty acid alkanolamide. Special Public Service 1977
-3264 Publication and Special Publication No. 38-17467,
It is disclosed that the combined use of tertiary amine oxide improves detergency and foaming power while suppressing skin irritation, and that higher fatty acid alkanolamide is also an excellent foaming agent and contributes to low irritation. is also well known (Japanese Patent Publication No. 38-25806, etc.).

Particularly in recent years, there has been a strong demand for cleaning agents that are less rough on hands, and
There are detergent compositions on the market that use both a grade amine oxide and a higher fatty acid alkanolamide and have excellent foaming power, cleansing power, and skin gentleness.

However, when exposed to heat or light, tertiary amine oxides and higher fatty acid alkanolamides can become colored, change their hue, sometimes even change the pH of the blended system, and even generate bad odors.

The fact that higher aliphatic alkanolamides are undesirable in terms of coloring and odor is mentioned in Japanese Patent Publication No. 14979/1983. This adverse effect is particularly noticeable in systems that use both tertiary amine oxide and higher fatty acid alkanolamide in combination. Therefore, cleaning compositions containing tertiary amine oxide or higher fatty acid alkanolamide,
In particular, a detergent composition containing both a tertiary amine oxide and a higher fatty acid alkanolamide has a high ability to prevent discoloration. The present inventors conducted intensive research to improve the heat resistance and light resistance of detergent compositions containing tertiary amine oxide or higher fatty acid alkanolamide, especially those in which the two are combined. The present invention was completed by discovering that heat resistance and light resistance can be dramatically improved by adding an acid.

That is, the present invention provides a detergent composition containing tertiary amine oxide or/and higher fatty acid alkanolamide as a co-activator, in which hydroxycarboxylic acid is blended in an amount of 5 to 50% by weight based on the co-activator. The present invention provides a cleaning composition characterized by:

More specifically, the main ingredient is anionic surfactant,
In order to improve its basic performance, 1 is selected from the group consisting of tertiary amine oxide and higher fatty acid alkanolamide.
or two or more types as a co-activator, and the remainder is water, in a detergent composition containing 5% by weight of the co-activator (h).
The object of the present invention is to provide a liquid detergent composition containing up to 50% by weight of hydroxypolycarboxylic acid, which has excellent detergency, foaming power, and skin gentleness, and has improved heat resistance and light resistance.

These co-activators can be used alone or in combination, and the preferred content is 0.5 to 10% by weight in total.
is within the range of Anionic surfactants that can be used in the present invention include alkyl (linear or branched) benzenesulfonic acids, alkyl (natural or synthetic, linear or branched) ether sulfates, α-olefin sulfonates, alkanes. Examples include sulfonates, alkyl sulfates, and alkyl phenol ether sulfates, and counter ions include alkali metals such as potassium and sodium, ammonium, and alkanolamines such as monoethanolamine, diethanolamine, and triethanolamine. .

Further, it may be partially substituted with magnesium. The content of anionic surfactant in the cleaning composition is preferably 5
-50% by weight, more preferably 10-30% by weight. The tertiary amine oxide used in the present invention is a mono-long-chain alkyl-di-short-chain alkyl amine oxide, and it does not matter whether the long-chain alkyl group is linear or branched.

The long chain alkyl group has 10 to 18 carbon atoms, preferably 12 to 15 carbon atoms. Short chain alkyl groups are methyl or ethyl groups. In addition, even a small amount of tertiary amine oxide is effective, and a large amount improves foaming power, but 5
If the amount is more than % by weight, the effect will not change, and if it is used more than that, the low-temperature stability of the composition will be deteriorated. Therefore, 0.5-5% by weight
is preferred. The higher fatty acid alkanolamide used in the present invention is a compound obtained from one or a mixture of two or more saturated or unsaturated fatty acids having 10 to 18 carbon atoms and monoethanolamine or diethanolamine.

The effect is noticeable when the amount added is 4% or more, and although there is no negative effect if it is added too much, it is economically disadvantageous.
0% by weight is preferred. Examples of the hydroxypolycarboxylic acid used in the present invention include citric acid, malic acid, and tartaric acid, among which citric acid shows the most excellent effect.

The amount added should be 5% by weight based on the co-activator; if it is more than this, the present effect will not change, but from an economical point of view, it is desirable to add 50% by weight or less. In addition to the above-mentioned components, the detergent composition of the present invention may contain other known components that are commonly added to detergent compositions.

For example, amphoteric surfactants, nonionic surfactants in amounts that do not impair the effects of the present invention, viscosity modifiers such as ethyl alcohol, glycerin, propylene glycol, inorganic salts, lower alkylbenzene sulfonates, urea, lower alkyl Hydrodrobe agents such as sulfates, fragrances, anti-redeposition agents,
Preservatives, dyes, PH adjusters, fluorescent agents, oxygen or chlorine bleaches, foaming agents, ultraviolet absorbers, antioxidants, appearance changing agents (
For example, a pearlizing agent, a clouding agent), etc. can be added as necessary. The present invention will be explained below with reference to Examples.
The scope of the present invention is not limited to these examples.

Example 1 The heat resistance and light resistance of the composition of the present invention and a comparative composition having the compositions shown in Table 1 were examined.

The results are shown in Table-1. Test method> (a) Fill a 300 ml transparent polyester bottle with the heat-resistant cleaning composition and leave it in a constant temperature room at 50° C. for 20 days.

After standing, observe the degree of coloring and hue with the naked eye. (B)
Light resistance *Create the same sample as in (a), expose it to carbon arc (using a fade meter) for 48 hours, and then observe with the naked eye.

Example 2 Heat resistance and light resistance were examined under the same conditions as for Black 5 of Example 1, except for the amounts of tertiary amine oxide and higher fatty acid diethanolamide.

The results are shown in Table-2. Example 3 The heat resistance and light resistance of the compositions shown in Table 3 were investigated.

Claims (1)

[Scope of Claims] 1 Contains an anionic surfactant as a main component and 25 to 50% by weight, and contains one or more types selected from the group consisting of tertiary amine oxide and higher fatty acid alkanolamide as an auxiliary active agent. A liquid cleaning composition comprising 0.5 to 10% by weight of hydroxypolycarboxylic acid and 5 to 50% by weight of an auxiliary active agent, the balance being water. 2 Content of tertiary amine oxide is 0.5 to 5% by weight
The cleaning composition according to claim 1. 3 Higher fatty acid alkanolamide content is 4 to 10
% by weight of the cleaning composition according to claim 1.