JPH0428796A - Liquid detergent composition - Google Patents

Abstract

PURPOSE:To provide the title stable, high-concentration composition of low viscosity, excellent in detergency and foamability, comprising a specific nonionic surfactant, terpene hydrocarbon, aliphatic lower alcohol and water at a specified proportion. CONSTITUTION:The objective composition comprising (A) 70-90wt.% of a nonionic surfactant prepared by mixing (1) an aliphatic diethanolamide and (2) an aliphatic monoethanolamide ethylene oxide adduct at a weight ratio of (8:2) to (5:5), (B) 2.5-7.5wt.% of a terpene hydrocarbon such as limonene, pinene or terpene, (C) 2.5-7.5wt.% of an aliphatic lower alcohol such as ethanol, and (D) the rest of water.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a highly concentrated liquid detergent composition with excellent detergency and foaming power. The kitchen detergent used in

Most are liquid cleaning agents. By the way, if we look at the housing situation in Japan in recent years, the reality is that it is not possible to take up a large amount of space in the kitchen, and the current situation is that dishes and other items are lined up in a very narrow area, especially in the sink area. It is. Housewives and other people who do a lot of work in the kitchen struggle with how to effectively utilize this limited space.

One solution to this problem is to make the kitchen detergents we use every day more compact. Placing a large detergent bottle in a very narrow space is extremely inefficient, and making kitchen detergents more compact has been a desired theme for some time.

The surfactants mainly used in current kitchen detergents include linear alkylbenzene sulfonates, lauryl sulfates, polyoxyethylene lauryl ether Ta salts, and α-olefin sulfonates. Typically, the surfactant concentration is between 25 and 35% by weight. Studies on increasing concentrations using these surfactants have been carried out for some time, and even with delicate combinations of various surfactants and the combined use of large amounts of solubilizers, only 40-45% by weight can be achieved. In addition, products made compact in this way have high viscosity, are difficult to use, and have poor stability at low temperatures. I haven't found anything satisfying.

[Means for Solving the Problems] As a result of intensive studies to solve the above-mentioned drawbacks, the present inventors changed the surfactant base to fatty acid jetanolamide and fatty acid monoethanolamide/ethylene oxide adduct (
A nonionic surfactant consisting of a mixture of ethylene oxide (hereinafter referred to as EO) is combined with a terpene hydrocarbon, an aliphatic lower alcohol, and water within a certain range to increase the surfactant concentration to 70%.
The present invention was completed based on the discovery that the detergency and stability can be increased by more than 1% by weight, and the viscosity can be kept low.

That is, the present invention provides a highly concentrated liquid detergent composition containing four primary components A to D.

(A) A nonionic surfactant that is a mixture of fatty acid jetanolamide and fatty acid monoethanolamide EO adduct, and the weight ratio thereof is in the range of 8=2 to 5:5.
70 to 90% by weight (B) Terpene hydrocarbon 2.5 to 7.5% by weight (C) Lower aliphatic alcohol 2.5 to 7.5% by weight (D) Water The remaining component A of the present invention is a surfactant. A mixture of fatty acid jetanolamide and fatty acid monoethanolamide/EO adduct in a specific ratio is used. The alkyl group of these fatty acid alkanolamides preferably has 10 to 14 carbon atoms; if the alkyl group has 16 or more carbon atoms, the composition will not be able to maintain a liquid state.The number of moles of EO added to the fatty acid monoethanolamide EO adduct is 1 to 15 Component A is preferably blended in an amount of 70 to 90% by weight in the composition. If it is less than 70% by weight, the purpose of increasing the concentration of the present invention cannot be achieved, and if it is more than 90% by weight, stable transparent liquefaction becomes difficult. A typical component A is coconut oil fatty acid jetanolamide.

Lauric acid jetanolamide, myristic acid jetanolamide, coconut oil fatty acid monoethanolamide (2E
O), coconut oil fatty acid monoethanolamide (5EO),
Coconut oil fatty acid monoethanolamide (IOEO), lauric acid monoethanolamide (2EO>), lauric acid monoethanolamide (5EO), lauric acid monoethanolamide (IOEO), myristic acid monoethanolamide (5E○), myristic acid monoethanolamide The terpene hydrocarbons of component B used in the present invention, such as ethanolamide (IOEO) and myristic acid monoethanolamide (15E'O), are preferably monoterpene hydrocarbons, which are synergistic with components C and D. Preferred ones that act as solubilizers include:
Limonene, pinene, and myrcene are listed. The blending amount of component B in the composition is preferably 2.5 to 7.5% by weight,
At 2.5% by weight or less, transparent liquefaction is not maintained.
If it exceeds 7.5% by weight, the odor may be too strong and unpleasant during use.

The most preferred aliphatic lower alcohol for component C is ethanol, which acts synergistically with components B and D as a solubilizer. The amount of component C in the composition is 2.5 to 7.
．． It is preferably 5% by weight; if it is less than 2.5%, it becomes difficult to maintain a transparent liquid state, and if it is more than 7.5%, the odor during use may become unpleasant.

Component C, water, is preferably used in the range of 5 to 15% by weight in the composition; if it is less than 5% by weight or more than 15% by weight, transparent liquefaction may not be maintained or stability at low temperatures may deteriorate. Another invention of the present invention is a liquid cleaning composition that further contains an inorganic acid and/or an organic acid in addition to the above components.

As the fifth component, inorganic acids and organic acids, hydrochloric acid, sulfuric acid, phosphoric acid, citric acid, tartaric acid, malic acid, oxalic acid, etc. are used, and the blending amount depends on the type of fatty acid alkanolamide that is the base. It varies depending on the amount, but from 0.1 to
5% by weight can be used. If these acids are not blended, hands will be slightly rough during use, but by blending acids, a milder, highly concentrated kitchen detergent can be made.

If necessary, solubilizing agents such as glycerin, p-toluenesulfonic acid and urea, foaming enhancers, and auxiliary agents such as perfume and colorants may be added to the highly concentrated liquid detergent of the present invention.

Furthermore, for the purpose of adjusting foaming and cleaning properties, other anionic surfactants, cationic surfactants, amphoteric surfactants, and nonionic surfactants may be added to the extent that they do not impede the purpose of the present invention. These include 1, for example fatty acid soap.

Higher alcohol sulfate ester, polyoxyethylene higher alcohol phosphate ester and its salt, polyoxy higher fatty acid phosphate ester and its salt, sulfonated higher fatty acid alcohol ester salt, higher alcohol sulfosuccinate, isethionic acid higher fatty acid ester salt, N-acyl −
N-methyl taurine salt, acyl sarcosine salt, N-acyl-N methyl-β-alanine salt, acyl glutamate, α-sulfo higher alcohol acetate, polyoxyethylene higher fatty acid monoethanolamide phosphate, amine oxide, alkyl Dimethyl betaine 2-
Examples include, but are not limited to, alkyl-N-carboxyalkyl-N-hydroxyethylimidazolinium betaine, fatty acid amidopyropyldimethylaminoacetic acid betaine, and the like.

[Example] As shown in Examples 1 to 7 in Table 1, liquid detergent compositions with different formulations were prepared, and the condition of each composition was evaluated and a dishwashing test was conducted. Table 2 shows Comparative Examples 1 to 5 carried out in the same manner.

(Evaluation of condition) O: Transparent liquid Δ: Translucent or pasty ×: Cloudy or solid (Dish washing test method) Mix soybean oil and refined beef tallow in a ratio of 6:4, 0.1% oil Artificial stain colored blue 2. Oml in a specified dish (diameter 20
Transfer the mixture to a white inner plate of ci (white inner plate) and spread it evenly on the plate with your fingertips. 1500 d of sample aqueous solution with a concentration of 0.15% (30°
After transferring C) to a tub (diameter 30 cm x depth 14 cm) to prevent bubbles from forming, 500 ml of tap water at 30°C was dropped from 50 cm above the water surface of the sample aqueous solution in the tub, causing bubbles to form on the water surface in the tub. stand up. Place the dirty plates one by one into the basin and use a cotton dish towel (30CIII).
Using a #60 X30CI+ cotton broadcloth (washed and dried), rub the front and back surfaces of the dish in a circular motion to remove dirt. At this time, be careful not to create new bubbles on the liquid surface in the tub. The washing performance of the sample is evaluated by the number of dishes that can be washed before the bubbles created at the beginning of washing the dishes disappear from the liquid level in the basin.

In addition, palmitic acid jetanolamide was used instead of coconut oil fatty acid jetanolamide in Example 1, and palmitic acid monoethanolamide (5E○) was used instead of coconut oil fatty acid monoethanolamide (5E○).
[Example 8] Coconut oil fatty acid jetanolamide 49% Lauric acid jetanolamide 4% Lauric acid monoethanolamide (IOEO) 21% d-pinene 5% Ethanol 5% Polyoxyethylene (2) Sodium Lauric Ether Sulfate
5% Sodium α-olefin sulfonate 5
% Methylparaben 01% Citric acid 1.0% Water
a9% [Example 9] Coconut oil fatty acid jetanolamide myristic acid jetanolamide coconut oil fatty acid monoethanolamide (2EO) d-limonene ethanol linear alkylbenzenesulfonate natomethylparaben hydrochloric acid water 46% 3% 21% 6% 4% 10% 0.1% 0, 2% 9.7% When the high concentration liquid detergents of Examples 8 and 9 were used in the kitchen at home, it was found that a general commercial kitchen detergent (Company A product, surfactant concentration It showed the same cleaning power with less than half the amount used (stated as 27%) and caused less roughness on hands. In addition, when citric acid and hydrochloric acid were removed from Examples 8 and 9 and Comparative Examples 6 to 7 were used in the same manner, the cleaning power was the same, but some roughness was observed.

[Effect of the invention] The liquid cleaning composition of the present invention has a surfactant concentration of 1 to 70%.
It is a high-concentration liquid detergent with very high cleaning power (more than 1% by weight) and excellent cleaning power. Therefore, compared to general kitchen detergent G, it shows the same cleaning power with half the amount used, so it can be used in a J's type bottle.It takes up less space in the kitchen and the distribution process It also saves storage space, shipping costs, etc.

Claims (1)

[Scope of Claims] 1. A liquid cleaning composition characterized by blending the following four components A to D. (A) A mixture of fatty acid diethanolamide and fatty acid monoethanolamide ethylene oxide adduct, with a weight ratio of 70 to 90% by weight of a nonionic surfactant in the range of 8:2 to 5:5. (B) Terpene-based surfactant 2.5 to 7.5% by weight of hydrocarbons (C) 2.5 to 7.5% by weight of aliphatic lower alcohol (D) 2 of water remaining, the composition according to claim 1 further contains an inorganic acid and A liquid cleaning composition characterized by containing 0.1 to 3.0% by weight of/or an organic acid.