KR20180127146A - Eco-friendly detergent composition - Google Patents

Abstract

The present invention relates to an environmentally friendly detergent composition comprising: cooking oil; purified water; sodium hydroxide; sodium hydrogen carbonate; flour; and starch. According to one aspect, use of the environmentally friendly detergent composition according to the present invention enables easy removal of contaminants, particularly grease.

Description

[0001] Eco-friendly detergent composition [

The present invention relates to an eco-friendly detergent composition having excellent detergency without containing a surfactant.

Currently, various types of detergents are being marketed. Among them, synthetic detergents having high cleaning power are widely used. Most synthetic detergents are prepared by adding a surfactant as a main raw material and adding phosphate, a colorant, a bleaching agent, an enzyme, and the like as an auxiliary agent in order to increase the detergency. Since the surfactant and the auxiliary agent are difficult to be decomposed by microorganisms, , Especially water pollution problems.

As the interest in environmental pollution has been increasing worldwide, the development of a natural detergent that does not cause water pollution by decomposing easily by microorganisms after washing has been continued. Korean Patent No. 1714761 discloses a method for producing soap by adding caustic soda and baking soda to waste cooking oil as a natural detergent, Korean Patent Laid-Open Publication No. 2016-0099349 discloses a method for preparing soap by mixing cinnamon powder, baking soda and sodium citrate Natural detergents have been proposed. Such natural detergents have the advantage of not causing environmental pollution as environmentally friendly detergents, but they still have a disadvantage that they have less detergency than conventional detergents.

Accordingly, there is a need for an environmentally friendly natural detergent composition that exhibits detergency comparable to the detergency of conventional synthetic detergents, without causing environmental pollution.

One aspect is to provide an environmentally friendly natural detergent composition having excellent detergency without inducing environmental pollution and a method for manufacturing the same.

According to one aspect,

cooking oil; Purified water; Sodium hydroxide; Sodium hydrogencarbonate; flour; And 25 to 40 parts by weight of sodium hydroxide, 5 to 20 parts by weight of sodium hydrogencarbonate, 1 to 15 parts of wheat flour, and 1 part of 1 part by weight of wheat flour based on 100 parts by weight of the cooking oil. To < RTI ID = 0.0 > 15, < / RTI >

According to another aspect,

a) preparing sodium hydroxide aqueous solution by adding sodium hydroxide to purified water; b) performing a first saponification reaction to add edible oil to the sodium hydroxide solution; And c) adding a mixture of flour and starch to the first saponification composition obtained by the first saponification reaction; And d) after the step c), a second saponification reaction is carried out by adding an aqueous solution of sodium hydrogencarbonate.

According to one aspect, the use of the eco-friendly detergent composition according to the present invention can easily remove contaminants, particularly grease.

Hereinafter, an eco-friendly detergent composition according to exemplary embodiments and a manufacturing method thereof will be described in detail.

The eco-friendly detergent composition according to one embodiment includes cooking oil; Purified water; Sodium hydroxide; Sodium hydrogencarbonate; flour; About 25 to about 40 parts by weight of sodium hydroxide, about 5 to about 20 parts by weight of sodium hydrogencarbonate, about 1 to about 15 parts by weight of water, based on 100 parts by weight of the vegetable oil, about 70 to about 80 parts by weight of purified water, about 25 to about 40 parts by weight of sodium hydroxide, Part wheat flour, and about 1 to about 15 parts starch.

The environmentally friendly detergent composition does not include a surfactant which is the main component of the synthetic detergent.

Surfactants are known to be biodegradable at about 13%, and their degree of degradation is very low. Therefore, a surfactant having a low biodegradability is hardly decomposed by the microorganisms that reproduce in the wastewater, promotes foaming of the river, and hinders oxygen absorption in the air, thereby inhibiting the natural purification of the river.

Surfactants also generate a lot of foam, which requires a large amount of water to remove the foam. Therefore, when the detergent containing a surfactant is used, the discharge amount of domestic wastewater is increased and the cost of the purification treatment of water is increased.

In contrast, the environmentally friendly detergent composition of the present invention does not contain a surfactant, so that the amount of washing water is reduced and it is economically advantageous. In addition, since no surfactant is used, water pollution can be prevented.

In addition, although the environmentally friendly detergent composition of the present invention does not contain the surfactant used in conventional synthetic detergents, the detergent composition of the present invention exhibits excellent detergency by blending the above components in a specific amount.

Edible oils generally refer to edible vegetable oils that are fully liquid at 15 ° C. Examples of edible oils include, but are not limited to, coconut oil, corn oil, cottonseed oil, olive oil, palm oil, peanut oil, sunflower oil, rapeseed oil, camellia oil or soybean oil.

Further, the edible oil may be waste cooking oil collected after use.

Waste cooking oil is a substance that needs to be disposed of separately in order to prevent environmental pollution, and the cost for disposal is considerable. However, if waste cooking oil is used as a raw material for an environmentally friendly detergent composition, disposal cost can be saved, which is economically advantageous.

Sodium hydroxide is the main raw material of caustic soda, white translucent solid and strong in the air. It is also excellent in water solubility and emits heat through water and exothermic reaction. Since sodium hydroxide is alkaline when dissolved in water, it can then proceed with saponification with fatty acids. In addition, sodium hydroxide has strong adsorption and penetration ability, so it penetrates deep into the contaminants and decomposes the pollutants, thereby improving cleaning power and sterilizing power.

According to one embodiment, the content of sodium hydroxide in the eco-friendly detergent composition may be about 25 to about 40 parts by weight based on 100 parts by weight of the cooking oil, but the present invention is not limited thereto. The range of improving the detergency and sterilizing power of the eco- Lt; / RTI > For example, the content of sodium hydroxide in the eco-detergent composition may be about 30 to about 40 parts by weight based on 100 parts by weight of the cooking oil. For example, the content of sodium hydroxide in the eco-detergent composition may be about 35 to about 40 parts by weight based on 100 parts by weight of the cooking oil. If the content of the sodium hydroxide is less than 25 parts by weight, the contaminants are not sufficiently decomposed and the detergency is lowered.

Sodium bicarbonate is a main raw material for baking soda, and is a white powder and has high solubility in water. Also, sodium bicarbonate is excellent in adsorbability and can be adsorbed by contaminants, thereby effectively removing contaminants.

According to one embodiment, the content of sodium hydrogencarbonate in the environmentally friendly detergent composition may be about 5 to about 20 parts by weight based on 100 parts by weight of the cooking oil, but is not limited thereto and may be within a range that can improve the detergency of the environmentally friendly detergent composition Lt; / RTI > For example, the content of sodium hydrogencarbonate in the eco-detergent composition may range from about 5 to about 18 parts by weight. For example, the content of sodium hydrogencarbonate in the eco-detergent composition may be from about 5 to about 15 parts by weight. When the content of sodium hydrogencarbonate falls within the above range, no sediment is formed in the environmentally friendly detergent composition, and no residue remains on the object after washing. When the content of sodium hydrogencarbonate falls within the above range, sufficient washing power can be obtained.

According to one embodiment, the content of sodium hydroxide in the eco-detergent composition may be higher than the content of sodium hydrogencarbonate. For example, the content ratio of sodium hydroxide and sodium bicarbonate in the eco-detergent composition may be about 4: 1 to 2: 1. For example, the content ratio of sodium hydroxide and sodium bicarbonate may be about 4: 1 to 3: 1. When sodium hydroxide and sodium hydrogencarbonate are compounded in the above-mentioned content ratio, precipitates are not generated and excellent detergency and sterilizing power are obtained.

Flour is not a surfactant having both a lipophilic group and a hydrophilic group, but the flour has a cleaning ability through an adsorption process due to the porous property of the flour. Since the starch and protein in the wheat flour serve as a mineral oil, which is a kind of hydrocarbon material, the adsorbed oil sticks to the wheat flour more effectively.

According to one embodiment, the amount of flour in the eco-detergent composition may range from about 1 to about 15 parts by weight based on 100 parts by weight of the cooking oil, but is not limited thereto. For example, the content of flour in the eco-detergent composition may be from about 1 to about 13 parts by weight based on 100 parts by weight of vegetable oil. For example, the amount of flour in the eco-detergent composition may be from about 1 to about 10 parts by weight based on 100 parts by weight of the cooking oil. When the eco-friendly detergent composition contains the flour of the above content range, an excellent cleaning effect against grease can be exhibited.

Starch is composed of amylopectin and amylose, and is extracted from plants. Examples of the starch include, but are not limited to, corn starch, potato starch, sweet potato starch, tapioca starch, rice starch, wheat starch, and at least one selected from modified starches thereof.

Starch particles consist of a regular micelle structure due to strong intermolecular interactions. On the other hand, when water is added to the starch and heated, water molecules are impregnated in the micellar structure, the distance between the starch particles is gradually distanced and expanded, and the micellar structure is disturbed. That is, the swelling of the detergent is improved by expanding the surface area that can contact the contaminant due to the expansion of the starch. In addition, due to the adsorbability of fine starch particles, bacteria such as fungi can be easily removed.

According to one embodiment, the amount of starch in the eco-detergent composition may range from about 1 to about 15 parts by weight based on 100 parts by weight of vegetable oil, but is not limited thereto. For example, the amount of starch in the eco-detergent composition may range from about 1 to about 13 parts by weight based on 100 parts by weight of the cooking oil. For example, the amount of starch in the eco-detergent composition may range from about 1 to about 10 parts by weight based on 100 parts by weight of the cooking oil. When the content of the starch in the environmentally friendly detergent composition is within the above range, the cleaning effect due to the starch can be maximized. When the amount exceeds the above range, formation of the composition becomes difficult due to excessive foaming, In the case of underflow, the bubbles are not sufficiently formed and the cleaning effect can not be improved.

The use of flour and starch as natural detergents simultaneously increases the contact area with contaminants such as grease due to the expansion of starch and the oil is adsorbed by the porous nature of the wheat flour so that only one of wheat flour or starch is used The washing power could be remarkably improved.

According to one embodiment, the ratio of flour and starch content in the eco-detergent composition may be 1: 1. In such a content ratio, flour and starch are well mixed with each other, and a sufficient amount of foam is formed due to sufficient expansion, whereby excellent washing power can be exhibited.

In addition, the use of wheat flour and starch improves the contact area with the contaminants and the ability to adsorb, thus bringing synergy to the detergency achieved by sodium hydroxide and sodium bicarbonate.

Conventional natural detergents were sodium hydroxide or sodium hydrogencarbonate based detergents or most were flour or starch based detergents. This is because sodium hydroxide and aqueous sodium hydrogencarbonate solution are not easily mixed with wheat flour or starch, and flour or starch degrades the cleaning ability of sodium hydroxide or sodium hydrogencarbonate.

However, after intensive research, the present inventors have been able to easily mix wheat flour and starch by mixing wheat flour and starch with water, heating it and then adding it to a mixture of aqueous sodium hydroxide solution and oil.

According to one embodiment, the eco-friendly detergent composition of the present invention may further comprise a plant-derived oil in addition to the above-mentioned components. The plant-derived oil may be an aroma oil.

The plant-derived oil may be lavender oil or marjoram oil. For example, the plant-derived oil may be lavender oil.

These plant-derived oils have their own fragrance, through which lavender oil helps reduce stress and emotional stress, and marjoram oil helps calms the mind. In addition, the inherent fragrance emitted from the plant-derived oil can remove the odor of the environmentally-friendly detergent composition.

The plant-derived oil may be contained in such an amount as to remove odor. For example, about 0.1 part by weight or less, for example, about 0.01 to about 0.05 part by weight, based on 100 parts by weight of the vegetable oil.

According to one embodiment, the environmentally friendly detergent composition of the present invention may further include a humectant in addition to the above-mentioned components.

The humectant may be at least one selected from the group consisting of glycerin, glycerol, propanetriol, and polyhydric alcohol. The moisturizing agent can soften and smooth the skin.

The humectant may be used within a range that does not impair the detergency of the environmentally friendly detergent composition. For example, about 0.1 part by weight or less, for example, about 0.01 to 0.05 part by weight, based on 100 parts by weight of the cooking oil.

The eco-friendly detergent composition may be prepared sequentially through the following steps a) to d):

a) preparing sodium hydroxide aqueous solution by adding sodium hydroxide to purified water;

b) performing a first saponification reaction to add edible oil to the sodium hydroxide solution; And

c) adding a mixture of flour and starch to the first saponification composition obtained by the first saponification reaction; And

d) after the step c), a second saponification reaction is carried out by adding an aqueous solution of sodium hydrogencarbonate.

In the step b), when the cooking oil is added to the sodium hydroxide solution, the fatty acid and the alkali of the cooking oil are bonded to form a fatty acid salt, and the reaction is called a saponification reaction.

The production process is carried out at room temperature and in an aqueous solution. Specifically, sodium hydroxide is added to purified water to prepare an aqueous sodium hydroxide solution, followed by the addition of cooking oil, whereby the saponification reaction proceeds in the aqueous solution.

The step c) comprises mixing wheat flour and starch with water and heating to prepare a mixture of wheat flour and starch. Flour and starch were mixed with water and then heated to be added as a mixture in the form of a paste to be blended with the first saponification composition.

The step d) includes dissolving sodium hydrogencarbonate in water to prepare an aqueous solution of sodium hydrogencarbonate. The aqueous solution of sodium hydrogen carbonate is an eco-friendly additive that adsorbs, deodorizes, neutralizes, and softens, and is completely decomposed after use, without any toxicity. Therefore, the cleaning ability can be improved by the addition of the sodium hydrogencarbonate solution. Further, since sodium hydrogencarbonate is added in the form of an aqueous solution, it can be uniformly mixed in the composition.

After the step d), the step of adding the plant-derived oil may further include the step of adding the plant-derived oil.

After the step d), a step of adding a humectant may be further included.

Hereinafter, the present invention will be described in more detail with reference to the following examples, but the present invention is not limited thereto.

Production Example 1

6 kg of sodium hydroxide (caustic soda) was mixed with 12 kg of purified water and stirred to prepare an aqueous solution of sodium hydroxide. 18 L of oil (density: 0.93 kg / L) was added to an aqueous solution of sodium hydroxide and stirred to obtain a first saponified liquid composition. 1.8 kg of flour and 1.8 kg of starch were mixed with water and heated with stirring to add flour and starch-dissolved mixture to the first saponified liquid composition. Thereafter, an aqueous solution of sodium hydrogencarbonate in which 3 kg of sodium hydrogencarbonate (baking soda) was dissolved in water was added and stirred to obtain an eco-friendly detergent composition.

Production Example 2

An environmentally friendly detergent composition was prepared in the same manner as in Preparation Example 1, but without starch.

Production Example 3

An eco-friendly detergent composition was prepared in the same manner as in Preparation Example 1, but not containing both wheat flour and starch.

Production Example 4

An eco-friendly detergent composition containing 3 kg of sodium hydroxide was prepared.

Production Example 5

6 kg of sodium hydroxide (caustic soda) was mixed with 12 kg of purified water and stirred to prepare an aqueous solution of sodium hydroxide. 18 L of oil (density: 0.93 kg / L) was added to an aqueous solution of sodium hydroxide and stirred to obtain a first saponified liquid composition. 0.5 kg of flour and 0.5 kg of starch were mixed with water and heated with stirring to add flour and starch-dissolved mixture to the first saponified liquid composition. Thereafter, an aqueous sodium hydrogencarbonate solution in which 1.5 kg of sodium hydrogen carbonate (baking soda) was dissolved in water was added and stirred to obtain an environmentally friendly detergent composition.

Production Example 6

An environmentally friendly detergent composition was prepared in the same manner as in Preparation Example 1, but without starch.

Production Example 7

An eco-friendly detergent composition was prepared in the same manner as in Preparation Example 1, but not containing both wheat flour and starch.

Production Example 8

An eco-friendly detergent composition containing 1.0 kg of sodium hydroxide was prepared.

Experimental Example (Sensory Evaluation of Detergent Composition)

Ten applicants (5 males and 5 females) were supported and the sensory evaluation was conducted through the naked eye.

Eight pieces of 10 cm x 10 cm cotton fiber and eight 1000 ml beakers were prepared. The cotton fiber was coated with cooking oil and then dried. Thereafter, 400 ml of water and 10 g of the composition prepared in Production Examples 1 to 8 were added to a 1000 ml beaker, followed by sufficient stirring. Each of the beakers was immersed in cotton fibers for 1 minute, recovered and dried. The degree of oil stain was visually confirmed. The results are shown in the following table.

The case where the oil level was not visually confirmed was evaluated as 10 points, and the case where the same degree of oil level as that before the washing was confirmed was evaluated as 0 point.

The following scores are the average of the results of the applicants' evaluation after three identical trials.

Detergent composition Visual evaluation Example 1 Production Example 1 9.25 points Example 2 Production Example 2 6.55 points Example 3 Production Example 3 5.80 points Example 4 Production Example 4 3.50 points Example 5 Production Example 5 9.15 points Example 6 Production Example 6 6.25 points Example 7 Production Example 7 5.80 points Example 8 Production Example 8 3.15 points

As shown in the above table, Examples 1 and 5 using the detergent compositions blended at the composition ratios of the present invention, Examples 2, 3, 6, and 7 using a detergent composition containing no one component, Compared to Examples 4 and 8 using different detergent compositions.

It is believed that the detergent composition of the present invention combines the cleaning effect of sodium hydroxide and sodium hydrogencarbonate, and the effect of oil adsorption on the porous space of wheat flour and starch, thereby exhibiting a synergistic effect on cleaning power.

In addition, by adding a small amount of lavender natural oil to the detergent composition blended at the composition ratio of the present invention, it was possible to remove the odor of the detergent composition and anticipate the stress relief effect by the flavor of Raven.

In addition, a small amount of a moisturizing agent was further added to the detergent composition blended with the composition ratio of the present invention, so that smooth skin could be maintained even after use of the detergent.

Claims (10)

cooking oil; Purified water; Sodium hydroxide; Sodium hydrogencarbonate; flour; And an antioxidant detergent composition comprising starch,
Wherein the composition comprises 70 to 80 parts by weight of purified water, 25 to 40 parts by weight of sodium hydroxide, 5 to 20 parts by weight of sodium hydrogencarbonate, 1 to 15 parts by weight of wheat flour, and 1 to 15 parts by weight of starch, based on 100 parts by weight of the cooking oil. Eco-detergent composition. The method according to claim 1,
Wherein said environmentally friendly detergent composition further comprises a plant-derived oil. 3. The method of claim 2,
Wherein the plant-derived oil is lavender oil or marjoram oil. The method according to claim 1,
Wherein the cooking oil is a waste cooking oil. The method according to claim 1,
Wherein the content of the sodium hydroxide is 30 to 40 parts by weight. The method according to claim 1,
Wherein the content of the sodium hydrogencarbonate is 5 to 18 parts by weight. The method according to claim 1,
Wherein the starch is potato or corn-derived starch. A process for preparing an eco-friendly detergent composition according to claim 1,
a) preparing sodium hydroxide aqueous solution by adding sodium hydroxide to purified water;
b) performing a first saponification reaction to add edible oil to the sodium hydroxide solution; And
c) adding a mixture of flour and starch to the first saponification composition obtained by the first saponification reaction; And
d) after the step c), a second saponification reaction is performed by adding an aqueous solution of sodium hydrogencarbonate;
≪ / RTI > 9. The method of claim 8,
Wherein said step (c) comprises mixing wheat flour and starch with water and then heating to prepare a mixture of wheat flour and starch. 9. The method of claim 8,
Further comprising the step of adding the plant-derived oil after the step d).