JP2022073812A - Composition of functional detergent using soybean fatty acid and method for producing the same - Google Patents

Abstract

To solve the problem of the conventional functional detergent using soybean fatty acid in which: in Patent Application 2020-501112, a method for producing a nanoemulsion by irradiating ultrasonic waves in 3 stages was proposed; however, this ultrasonic irradiation process took more than 8 hours for one process, and it was necessary to carry out the irradiation process for a whole day in order to carry out the irradiation for three stages; therefore, actual industrialization was difficult; in order to improve this problem, the present invention has been improved so as to enable manufacture by performing 2 processes of ultrasonic irradiation for about 10 minutes.SOLUTION: In the present invention, a forced emulsion was formed by mixing purified water and soybean fatty acid using an ultrasonic generator with an electric power of 200 w or more and prior stirring, setting the horn of the ultrasonic generator at about 5 mm from the liquid level, and irradiating the ultrasonic wave. By fixing a horn near the liquid surface and directly irradiating the soybean fatty acid near the liquid surface with ultrasonic waves, the oil droplets of the soybean fatty acid were made fine and the nanoemulsion with purified water was successfully produced. Ultrasound at 20 kHz to 40 kHz was optimal for refining oil droplets, and a mixture of purified water and soybean fatty acids became cloudy in a few seconds of ultrasonic irradiation. Even with the mixed liquid of about 4 L, the first process was completed in about 30 to 60 minutes, and further refinement of the oil droplets was advanced by the ultrasonic irradiation of 1.6 MHz in the second process.

Description

Detailed description of the invention

The present invention relates to a composition and a production method of a functional detergent produced by ultrasonic treatment using soybean fatty acid and a stirring step.

Technical background

Infectious diseases of the new coronavirus have become a hot topic in recent years. Sodium hypochlorite, rubbing alcohol, etc. are used because they are effective against viruses, but there are many problems due to rough hands and points to be noted in use. In addition, household detergents are often used because of their bactericidal effect, but they have a problem of biodegradability, and an environmentally friendly cleaning agent has been required.

The present invention has focused on a functional detergent that is excellent in detergency and effective against viruses or bacteria, and as a result, can be expected to have a deodorizing effect and is also excellent in environmental friendliness.

Those having conventional sterilization and virus removal functions were characterized by immediate effect. That is, when sprayed or applied, the effect was exhibited almost at the same time. In a sense, it can be said that it has an element that causes some damage to the human body. In the present invention, we have developed a functional detergent that has no effect on the human body and is effective for a long period of time.

JP-A-2018-135403
Patent No. 6067114 Special Table 2000-504344
Patent application 2009-182706
Registration No. 3224587 Patent Application 2020-50112

Problems to solve the invention

A method for producing a nanoemulsion was proposed by irradiating a three-step ultrasonic wave in patent application 2020-501112. However, this ultrasonic irradiation step takes 8 hours or more in one step, and in order to perform the three-step irradiation, it is necessary to carry out the irradiation step for a whole day. Therefore, it was difficult to actually industrialize it. In order to improve this point, the present invention has been improved so that it can be manufactured by performing two steps of ultrasonic irradiation for about 10 minutes.

Means to solve problems

In the present invention, a forced emulsion is formed by mixing purified water and soybean fatty acid and pre-stirring using an ultrasonic generator with a power of 200 w or more, and the horn of the ultrasonic generator is about 5 mm from the liquid surface. It was set in and irradiated with ultrasonic waves. By fixing the horn near the liquid surface and irradiating the soybean fatty acid near the liquid surface with ultrasonic waves directly, we succeeded in making the oil droplets of the soybean fatty acid finer and creating a nanoemulsion with purified water. Ultrasonic waves from 20 kHz to 40 kHz were optimal for making oil droplets finer, and the mixed solution of purified water and soybean fatty acid became cloudy within a few seconds of ultrasonic irradiation. Even with a mixed solution of about 4 L, the first step was completed in about 30 to 60 minutes, and the 1.6 MHz ultrasonic irradiation in the second step further refined the oil droplets.

In the present invention, a saponification step was performed. At this time, the mixed solution did not become transparent unless it was added in an amount larger than the amount of potassium hydroxide obtained from the saponification value of soybean fatty acid 192. When the calculated potassium hydroxide was added, the PH value was 9.5 to 10, and when it was added in excess, the PH value was 11.5 to 12.

表１は黄色ブドウ球菌と緑膿菌に対して効果試験を示したものである。倍率は大豆脂肪酸３％の混合液からの生成物を希釈した倍率である。時間が経過するに従い効果がみられた。８時間後でも効果が継続するといえる。これは従来までの除菌剤にはみられない効果である。表２はウイルスに対しての効果である。３０秒以内ですべてのウイルスが９０％以上死滅している。また、希釈倍率から考えたとき、３％の混合物からの生成物を１０００倍に希釈しても効果が認められたといえる。When the concentration of soybean fatty acid exceeded 10%, the mixed solution became a slurry when the PH value became 12 or more, and solidified when further added. The product in the present invention is considered to have the properties of soap, has a small skin irritation, and has the property of keeping the skin clean without adversely affecting the skin even when used for a long time. The test results shown below are for viruses and fungi.

Table 1 shows the effect tests against Staphylococcus aureus and Pseudomonas aeruginosa. The ratio is the ratio obtained by diluting the product from the mixed solution of 3% soybean fatty acid. The effect was seen as time passed. It can be said that the effect continues even after 8 hours. This is an effect not found in conventional disinfectants. Table 2 shows the effects against viruses. Within 30 seconds, more than 90% of all viruses are killed. Further, considering the dilution ratio, it can be said that the effect was recognized even if the product from the 3% mixture was diluted 1000 times.

Demonstration example 1

900 g of purified water was added to 100 g of soybean fatty acid, and after high-speed stirring, ultrasonic waves of 20 kHz were irradiated for 30 minutes with a 200 W ultrasonic generator. Further, the ultrasonic wave of 1.6 MHz was irradiated for 30 minutes. 9 g, 9 g and 5 g of potassium hydroxide were added and saponified. The PH value was 11.5. The product became a yellowish, viscous solution. Using this product, the results shown in Tables 1 and 2 were obtained.

The invention's effect

Soap is a detergent that uses fatty acids and is widely used as a solid or liquid by saponifying. It is soft to the touch and is familiar without causing rough hands. The present invention has focused on the production of nanoemulsions obtained by making particles finer by using ultrasonic waves. It has a lower fatty acid content than soap and is highly biodegradable. Soap is made of colloidal particles, and in recent years, detergents using colloidal particles have been developed. However, water and fatty acids are difficult to mix, and many synthetic surfactants have been added to create products. Originally, detergents using colloidal particles pursued biodegradability, and the addition of synthetic surfactants, on the contrary, caused environmental pollution. The present invention has been developed with the idea of having an element as a solution to environmental pollution. Even if the amount of fatty acid added is small, it has a great effect on bacteria or viruses, and by suppressing these, a deodorizing effect was also produced. It is considered that the product of the present invention can make a great contribution to society even for marine pollution, which has become a social problem.

FIG. 1 is an ultrasonic generator. A container (E) containing a mixture of soybeans and purified water is placed on the stage (F), and the horn (D) is fixed at about 5 mm from the water surface. When the ultrasonic generator is operated, the horn (D) vibrates up and down to irradiate the mixture with ultrasonic waves. The horn (D) is fixed to the stand (A) by an arm (B) and a support (C) of the horn (D). FIG. 2 is a 1.6 MHz ultrasonic generator. The 1.6 MHz oscillator (I) is fixed to the dish (H) and is brought into contact with the water surface of the container (J) containing the mixture by lowering it in the direction of ⇒ by the support (G). FIG. 3 is a stirrer. The container (M) containing the solution transmits the rotation of the servomotor (K) to the container (M) containing the solution through the fixed body (L).

(A) is a stand.
(B) is an arm.
(C) is support.
(D) is a horn.
(E) is a container containing the mixture.
(F) is a stage.
(G) is a support.
(H) is a plate.
(I) is a 1.6 MHz oscillator.
(J) is a container containing the mixture.
(K) is a servo motor.
(L) is a fixed body.
(M) is a container containing the solution.

Claims (3)

A process of irradiating a solution of a mixture of 3 to 20 parts by weight of sodium fatty acid and 80 to 97 parts by weight of purified water with an ultrasonic generator of 20 KHz to 40 KHz for 10 minutes or more and an ultrasonic generator of 1.6 MHz or more. A functional detergent obtained from the step of adding potassium hydroxide or sodium hydroxide to the product of the step of irradiating for 10 minutes or more and saponifying. The functional detergent according to claim 1, wherein the amount of potassium hydroxide or sodium hydroxide added during saponification is 0.1 mol or more per 100 g of soybean fatty acid. The manufacturing step of the functionally cleaned product according to claim 1, wherein high-speed stirring is performed as a pretreatment step, and stirring is performed at the same time as ultrasonic treatment.

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