JPH0546400B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a novel cleaning composition, more specifically, a novel cleaning composition containing an α-sulfofatty acid salt, a lower polycarboxylic acid salt and a polyethylene glycol as essential ingredients, which is a cleaning composition for cleaning oil-based stains. The present invention relates to a cleaning composition that exhibits excellent cleaning effects. In general, stain components that adhere to clothing include, for example, inorganic stains, oil stains, lipid stains, protein stains, etc. Among these, oil stains in particular are increasing as eating habits improve. It is difficult to remove oily stains that adhere to clothing.
It is desired to develop a cleaning agent that can effectively remove this. Conventionally, nonionic surfactants have been known to be effective against the above-mentioned oil-based stains, but when used as particulate detergents, these nonionic surfactants can be used during spray drying. Because it scatters,
It has the drawback that it is difficult to utilize it effectively and that its effects are not sufficient unless it is blended in a large amount. In view of these circumstances, the present inventors have conducted extensive research in order to provide a cleaning composition that can extremely effectively remove oily stains attached to clothing, etc. As a result, the present inventors have found that α-sulfofatty acid salts, certain It was discovered that a cleaning composition containing three essential components, a lower polycarboxylic acid salt and polyethylene glycol, and in a specific ratio can achieve the object, and based on this knowledge, the present invention was completed. I came to the conclusion. That is, the present invention provides (A) general formula (In the formula, R is an alkyl group or alkenyl group having 10 to 20 carbon atoms, M is an alkali metal or alkaline earth metal) 1 to 20% by weight of an α-sulfo fatty acid salt,
(B) Contains 0.5 to 5% by weight of at least one salt of a lower polyhydric carboxylic acid selected from succinic acid and citric acid, and (C) 0.5 to 5% by weight of polyethylene glycol with an average molecular weight of 1000 to 10000. and [(A)
The present invention provides a cleaning composition characterized in that the weight ratio of component + component (C)]/component (B) is 1 to 9. The α-sulfo fatty acid salt used as component (A) in the composition of the present invention has a structure represented by the above general formula (), where R is an alkyl group or an alkenyl group having 10 to 20 carbon atoms. and M is an alkali metal or an alkaline earth metal. This α-sulfo fatty acid salt is produced by sulfonating a fatty acid with a total number of 12 to 22 carbon atoms using a conventional continuous thin film sulfonation device or tank sulfonation device, and then neutralizing it, or by sulfonating a fatty acid ester. , obtained by heat treatment under strong alkali. The content of α-sulfo fatty acid salt in the composition of the present invention is in the range of 1 to 20% by weight, preferably 5 to 15% by weight, and if this content is less than 1% by weight, sufficient effects will not be exhibited. Moreover, if it exceeds 20% by weight, the solubility of the cleaning agent deteriorates, which is not preferable. The lower polycarboxylic acid salt used as component (B) in the composition of the present invention is a salt of at least one lower polycarboxylic acid selected from succinic acid and citric acid, and is the most preferred among these. The thing is sodium citrate. These lower polycarboxylic acid salts may be used alone or in a mixture of two types, and the content thereof is 0.5 to 5% by weight, preferably 1
-3% by weight. The polyethylene glycol used as component (C) in the composition of the present invention has a molecular weight in the range of 1000 to 10000, preferably 4000 to 6000, and its content is 0.5 to 5% by weight, preferably 1 to 3% by weight. is within the range of In the composition of the present invention, the α-sulfone fatty acid salt of component (A), the lower polycarboxylic acid salt of component (B), and
The polyethylene glycol of component (C) is [component (A) +
The weight ratio of component (C)]/component (B) is 1 to 9, preferably
They are mixed in a ratio of 1.5 to 4. If this weight ratio is outside the above range, effective oil stain cleaning power will not be exhibited due to the interaction, which is not preferable. In addition to the above-mentioned essential ingredients, the composition of the present invention may contain surfactants, builders, enzymes, anti-recontamination agents, fillers, fragrances, pigments, etc. that are commonly used in detergents, if necessary. can. Examples of the surfactant include anionic surfactants such as sodium α-olefin sulfonate, sodium linear alkylbenzenesulfonate, sodium alkyl sulfate, sodium polyoxyethylene alkyl ether sulfate, sodium methyl α-sulfofatty acid, or commonly used surfactants. nonionic surfactant,
Examples include amphoteric surfactants and cationic surfactants. In addition, as the builder, for example, chelate builders such as sodium tripolyphosphate, sodium pyrophosphate, NTA, and EDTA, calcium scavenging builders such as sodium aluminosilicate, and auxiliary builders such as sodium silicate and sodium carbonate can be used. For example, sodium sulfate is used. The cleaning composition of the present invention contains an α-sulfo fatty acid salt, a lower polycarboxylic acid salt, and polyethylene glycol as essential components, and
Demonstrates excellent cleaning power for oily stains on clothing, etc. Next, the present invention will be explained in more detail with reference to Examples. The oil stain cleaning power of the cleaning composition was evaluated according to the following method. Evaluation of oil stain cleaning power Add 30 g of soybean oil (manufactured by Wako Pure Chemical Industries) and 10 g of commercially available B heavy oil to benzene 1, perform ultrasonic dispersion for 5 minutes, and place a 10 x 25 cm clean cloth (for JIS dye fastness test) in this bath. Polyester cloth) is soaked, contaminated and then air-dried to obtain a contaminated cloth. This contaminated cloth was cut into 5 x 5 cm pieces and Carl-Zeiss
The reflectance was measured using Elrepho, and the reflectance was 30±2.
Items in the range of were subjected to cleaning tests. The cleaning test was performed using Terg-O- manufactured by USTesting.
Using a tometer, rotation speed 100 rpm, 25℃,
Washing was performed for 10 minutes under the conditions of 4°DH, 30 times the bath ratio, and a detergent concentration of 0.14% by weight, and the cleaning rate was calculated using the following formula. Cleaning rate (%) = (Reflectance after cleaning) - (Reflectance of dirty cloth) / (Reflectance of clean cloth) - (Reflectance of dirty cloth) x 10
0 In addition, the abbreviations in the tables in Examples represent the following compounds. α-SFMe: Methyl hydrogenated beef fatty acid-α-sodium sulfonate α-SF di-salt: Sodium α-sulfopalmitate PEG(1): Polyethylene glycol (molecular weight:
4000) PEG(2): Polyethylene glycol (molecular weight:
6000) AOS: C14-18α-olefin sodium sulfonate AS: Sodium lauryl sulfate LAS: Sodium dodecylbenzenesulfonate Examples 1-4, Comparative Examples 1-2 A cleaning composition having the component composition shown in the table was prepared. The oil stain cleaning power was evaluated. The results are shown in the table below. 【table】

Claims (1)

[Claims] 1 (A) General formula (in the formula, R is an alkyl group or alkenyl group having 10 to 20 carbon atoms, M is an alkali metal or alkaline earth metal), (B) succinic acid and Salt of at least one lower polyhydric carboxylic acid selected from citric acid 0.5-5
% by weight, and (C) 0.5 to 5% by weight of polyethylene glycol with an average molecular weight of 1,000 to 10,000, and the weight ratio of [component (A) + component (C)]/component (B) is 1 to 9. A cleaning composition characterized by: