JPH0351759B2 - - Google Patents

Description

[Detailed description of the invention]

TECHNICAL FIELD The present invention relates to cleaning compositions. Specifically, the present invention provides a cleaning composition that is highly safe and has excellent cleaning power, particularly suitable for cleaning and sterilizing freshly colored products such as milk supplement bottles, vegetables and fruits, and food manufacturing equipment. relating to things. As surfactants used in synthetic kitchen detergents, hidden ionic surfactants include alkylbenzene sulfonates, alkyl sulfates, polyoxyethylene alkyl ether sulfates, alphaolefin sulfonates, alkanesulfonates, etc. Common nonionic surfactants include polyoxyethylene alkyl ether, fatty acid alkanolamide, polyoxyethylene alkyl phenyl ether, and amine oxide. Most commercially available synthetic kitchen detergents are made by combining these surfactants and have excellent cleaning power. However, consumers are concerned about the safety of synthetic kitchen detergents, and the reality is that there are few housewives who wash fruits and vegetables with synthetic kitchen detergents without any hesitation. However, it is a fact that cleaning and sterilizing any dirt, bacteria, or concentrated medicine with a surfactant aqueous solution is more effective than washing with water. There is a demand for detergents that do not cause problems even if they are incomplete and detergent remains. Traditionally, housewives who are worried about washing food, fruits, vegetables, etc. with synthetic kitchen detergents have been using soap. Generally used soaps are preferably in liquid form from the viewpoint of ease of use, and an aqueous solution of potassium coconut fatty acid soap is used. However, soap combines with calcium and magnesium in tap water and becomes water-insoluble metal soap, resulting in dissatisfaction with its cleaning power. Also, although soap is said to be less toxic than the synthetic surfactants mentioned above, it cannot be said to be completely safe since it is not recognized as a food additive in Japan. On the other hand, some synthetic kitchen detergents containing sucrose fatty acid ester as a surfactant, which is approved as a food additive that can be used without restriction in Japan, are used in some areas, but their cleaning power is weak and they are not available on the market. The reality is that it is not highly rated. The inventors of the present invention have worked hard to develop a cleaning agent that has excellent cleaning power, is highly safe, and can safely clean and sterilize milk supplement bottles, fresh foods such as vegetables and fruits, and food manufacturing equipment. As a result, they discovered that a cleaning agent containing a specific polyglycerol fatty acid ester and sucrose fatty acid ester in a certain ratio exhibits excellent cleaning power that was previously unimaginable, and completed the present invention. That is, the cleaning composition of the present invention contains (1) a monoester of polyglycerin and lauric acid with a degree of polymerization of 5 to 10, and (2) a monoester of sucrose and lauric acid in a weight ratio of essential components. is contained in a range of (1):(2)=4:1 to 2:3. Even if polyglycerol fatty acid esters other than those specifically used in the present invention are used as the polyglycerol fatty acid esters, the expected detergency will not be achieved. Similarly, sucrose fatty acid esters other than sucrose monolaurate cannot provide the expected detergency. On the other hand, detergency containing polyglycerin fatty acid monolaurate and sucrose fatty acid monolaurate with a degree of polymerization of 5 to 10 at a blending ratio outside the above range also has weak detergency and is inappropriate for the purpose of the present invention. be. Both the polyglycerol fatty acid ester and sucrose fatty acid ester used in the present invention are surfactants that can be used without limit in Japan, and by combining them, a detergent with excellent and highly safe cleaning power has been achieved. is groundbreaking. In addition to the above-mentioned essential ingredients, the cleaning composition of the present invention includes solubilizing agents such as ethanol, propylene glycol, and glycerin, citric acid, gluconic acid, succinic acid, malic acid, tartaric acid, fumaric acid, and ethylenediaminetetratetraacetic acid. It goes without saying that anti-settling agents such as salts, preservatives such as sodium benzoate, methyl hydroxybenzoate, dehydroacetic acid, ethyl paraoxybenzoate, and salicylic acid, fragrances, coloring agents, water, and the like may be appropriately incorporated. The cleaning composition preferably has the following composition in weight percent: (1) + (2) 5-80% solubilizer 0-50% anti-settling agent preservative fragrance 0-10% colorant water balance . Below, Examples 1 to 7 and Comparative Examples 1 to 7 in the present invention when the total amount of surfactant is 20% by weight.
23, but it goes without saying that the present invention is not limited to the scope of this example. Examples 1 to 7, Comparative Examples 1 to 23 [Cleaning power test-1] A detergent power test was conducted by the Shell method. Specifically, the following procedure was used. 1. Preparation of dishes with "dirt" on them 900g of cooking oil, 150g of egg yolk powder, 900g of water
were mixed in a mixer at 40°C to create a "stain", 2.0 g of this dirt was pipetted and dropped onto a plate, and spread over a fixed area with fingers to adhere the "stain" to 20 plates. 2 Preparation of cleaning composition aqueous solution Prepare the manufactured cleaning composition in a tub, and
A 0.75% by weight aqueous solution (water temperature 25°C) of the cleaning composition was prepared by dropping water into a tub through the device shown in the figure. 3. Cleaning power test The dish from 1 above was washed with 0.75% of the detergent composition from 2 above.
Soak it in a %wt aqueous solution and completely remove dirt by rotating the brush 5 times on both the front and back sides. Continue this operation until the foam covering the liquid surface is half the area of the tub, and record the number of dishes washed so far. This was repeated twice. The results of the detergency test under the above conditions are shown in Tables 1 and 2. [Cleaning Power Test-2] The hopper of a soft-serve ice cream freezer soiled with soft-serve ice cream mixture was tested using the cleaning compositions of Examples 1 to 7 and Comparative Examples 1 to 23 having the formulations shown in Tables 1 and 2. After applying a 0.6wt% aqueous solution and brushing with a brush with a handle, the hoppers washed with the compositions of Examples 1 to 7 did not repel water, but the hoppers of Comparative Examples 1 to 23 did not repel water. Hoppers cleaned with the composition repelled water, indicating that the stain had not been removed. The soft serve ice cream freezer was a Mitsubishi SF-3WG. [Cleaning power test-3] Powdered milk dissolved in hot water at the ratio specified by the manufacturer was poured into a glass supplementary milk bottle, discarded, and left for one hour. Examples 1 to 7 and Comparative Examples 1 to 23
After washing with a 0.6wt% aqueous solution of the cleaning composition of Example 1 to
The milk supplement bottles washed with the composition No. 7 did not repel water, but the milk supplement bottles washed with the compositions of Comparative Examples 1 to 23 repelled water, indicating that the stains were not removed. The powdered milk used was manufactured by Nippon Weiss.

[Table] In Tables 1 and 2, the unit of blending amount of each component is % by weight, and the parentheses indicate the degree of polymerization of polyglycerin.

【table】 [Brief explanation of drawings]

FIG. 1 is a diagram showing the equipment used in the detergency test (Siel method). 1... Roto, 2... Oke.

Claims (1)

[Claims] 1 (1) A monoester of polyglycerin and lauric acid with a degree of polymerization of 5 to 10, and (2) a monoester of sucrose and lauric acid in a weight ratio of (1):(2)=4: A cleaning composition characterized in that the content is in the range of 1 to 2:3.