KR20190095241A - Eco-friendly detergent composition - Google Patents

Abstract

The present invention relates to an eco-friendly detergent composition, which comprises: cooking oil; purified water; sodium hydroxide; sodium bicarbonate; flour; and starch and has excellent cleaning power without causing environmental pollution.

Description

Eco-friendly detergent composition

The present invention relates to an environment-friendly detergent composition having excellent cleaning power without including a surfactant.

Currently, various types of detergents are sold in the market. Among them, synthetic detergents having high cleaning power are widely used. Most synthetic detergents contain surfactant as a main raw material, and are prepared by adding phosphate, colorant, bleach, enzyme, etc. as an auxiliary agent to increase cleaning power, and the surfactant and the auxiliary agent are difficult to be decomposed by microorganisms, thereby causing environmental pollution. , Especially water pollution.

As interest in environmental pollution is increasing around the world, the development of natural-derived detergents, which are easily degraded by microorganisms after washing, does not cause pollution of water, continues. As a natural-derived detergent, Korean Patent No. 1714761 discloses a method of preparing soap by adding caustic soda and baking soda to waste cooking oil, and Korean Patent Laid-Open Patent 2016-0099349 combines cinnamon powder, baking soda, and citric acid. Natural detergents are presented. Such a detergent derived from nature has the advantage of not causing environmental pollution as an environmentally friendly detergent, but still has a disadvantage of poor cleaning power compared to conventional synthetic detergents.

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

One aspect is to provide an environmentally friendly natural detergent composition and a method for producing the same that have excellent cleaning power without causing environmental pollution.

According to one aspect,

cooking oil; Purified water; Sodium hydroxide; Sodium bicarbonate; flour; And environmentally friendly detergent composition comprising starch, based on 100 parts by weight of the cooking oil, 70 to 80 parts by weight of purified water, 25 to 40 parts by weight sodium hydroxide, 5 to 20 parts by weight sodium hydrogencarbonate, 1 to 15 flour, and 1 There is provided an environmentally friendly detergent composition comprising from 15 to starch.

According to the other side,

a) adding sodium hydroxide to purified water to prepare an aqueous sodium hydroxide solution; b) performing a first saponification reaction of adding cooking 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 step c), performing a second saponification reaction by adding an aqueous sodium hydrogen carbonate solution.

According to one aspect, it is possible to easily remove contaminants, in particular grease by using the environment-friendly detergent composition according to the invention.

Hereinafter, an eco-friendly detergent composition and a method of preparing the same according to exemplary embodiments will be described in detail.

Eco-friendly detergent composition according to one embodiment the cooking oil; Purified water; Sodium hydroxide; Sodium bicarbonate; flour; And starch, based on 100 parts by weight of the cooking oil, about 70 to about 80 parts by weight of purified water, 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 weights Part wheat flour, and about 1 to about 15 parts by weight starch.

The eco-friendly detergent composition does not include a surfactant that is the main component of the synthetic detergent.

Surfactants are known to have a biodegradability of about 13%, with a very low degree of natural degradation. Therefore, the low biodegradable surfactant is difficult to be decomposed by microorganisms inhabiting waste water, and promotes the foaming of river water, and also inhibits oxygen absorption from the air and inhibits the natural purification action of rivers.

In addition, surfactants produce a lot of foam, which requires a large amount of water for defoaming. Therefore, when using a detergent containing a surfactant, the discharge of domestic sewage is increased, thereby causing a problem that the burden of water purification treatment costs increase.

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

In addition, although the eco-friendly detergent composition of the present invention does not include a surfactant used in the conventional synthetic detergent, by combining the above components in a specific content, it exhibited excellent cleaning power.

Cooking oil generally refers to edible vegetable oils which are completely in liquid form at 15 ° C. Examples of edible oils include, but are not limited to, coco oil, corn oil, cottonseed oil, olive oil, palm oil, peanut oil, sunflower oil, rapeseed oil, camellia oil or soybean oil.

In addition, the cooking oil may be waste cooking oil collected after use.

Waste cooking oil is a material that needs to be disposed of separately to prevent environmental pollution, and the cost for disposal is considerable. However, if the waste cooking oil is used as a raw material of the environmentally friendly detergent composition, it will be economically advantageous because it will save the disposal cost.

Sodium hydroxide is the main raw material of caustic soda, white translucent solid and strongly deliquescent in air. In addition, it has excellent solubility in water and dissipates heat through exothermic reactions with water. Sodium hydroxide is alkaline when it is dissolved in water, so that you can proceed to saponification with fatty acids. In addition, since sodium hydroxide has good penetrability because of good adsorption, it penetrates deep into the contaminant to decompose the contaminant, thereby improving cleaning 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 edible oil, but is not limited thereto, the range that can improve the cleaning and sterilization power of the eco-friendly detergent composition It may be in the content. For example, the content of sodium hydroxide in the environmentally friendly detergent composition may be about 30 to about 40 parts by weight based on 100 parts by weight of cooking oil. For example, the content of sodium hydroxide in the environmentally friendly detergent composition may be about 35 to about 40 parts by weight based on 100 parts by weight of cooking oil. When the content of the sodium hydroxide is less than 25 parts by weight, contaminants are not sufficiently decomposed, and the cleaning power is lowered.

Sodium hydrogen carbonate is a main raw material of baking soda, and is a white powder having high solubility in water. In addition, sodium bicarbonate has good adsorption property, so that it can be adsorbed on contaminants to effectively remove contaminants.

According to one embodiment, the content of sodium hydrogen carbonate in the eco-friendly detergent composition may be about 5 to about 20 parts by weight based on 100 parts by weight of edible oil, but is not limited thereto, within the range to improve the cleaning power of the eco-friendly detergent composition. Content. For example, the content of sodium bicarbonate in the environmentally friendly detergent composition may be about 5 to about 18 parts by weight. For example, the content of sodium bicarbonate in the environmentally friendly detergent composition may be about 5 to about 15 parts by weight. When the content of sodium hydrogen carbonate falls within the above range, no precipitate is formed in the environment-friendly detergent composition, and no residue remains on the object after washing. In addition, when the content of sodium bicarbonate falls within the above range, sufficient washing power can be obtained.

According to one embodiment, the content of sodium hydroxide in the environment-friendly detergent composition may be higher than the content of sodium hydrogen carbonate. For example, the content ratio of sodium hydroxide and sodium bicarbonate in the environmentally friendly 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 hydrogen carbonate are combined in the above content ratios, excellent washing power and sterilizing power are obtained without generating a precipitate.

Although flour is not a surfactant having a lipophilic group and a hydrophilic group at the same time, it has a washing ability through the adsorption process due to the porous nature of the flour. Since starch and protein in the wheat flour act as a lipophile made of a kind of hydrocarbon material, the adsorbed oil adheres well to the wheat flour, thereby enabling a more effective washing.

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

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

Starch particles have a regular micelle structure due to strong bonding between molecules. On the other hand, when water is added to the starch and heated, water molecules infiltrate into the micelle structure, the distance between the starch particles gradually increases, expands, and gelatinization of the micelle structure is disturbed. In other words, due to the expansion of the starch, the surface area which can come into contact with the contaminants is widened, thereby improving the detergent cleaning power. In addition, due to the adsorption of fine starch particles, bacteria such as molds can be easily removed.

According to one embodiment, the content of starch in the environment-friendly detergent composition may be about 1 to about 15 parts by weight based on 100 parts by weight of cooking oil, but is not limited thereto. For example, the content of starch in the environment-friendly detergent composition may be about 1 to about 13 parts by weight based on 100 parts by weight of cooking oil. For example, the content of starch in the environment-friendly detergent composition may be about 1 to about 10 parts by weight based on 100 parts by weight of cooking oil. When the starch content in the eco-friendly detergent composition is included in the above range, it is possible to maximize the cleaning effect due to the starch, when the content exceeds the content range is difficult to form the composition due to the formation of excessive foam, the content range If it is less than sufficient, the foam is not formed sufficiently and the effect of improving the cleaning power cannot be obtained.

By using flour and starch at the same time as natural detergent, the contact area with contaminants such as oils is increased by the expansion of starch, and the oil is adsorbed by the porous nature of the flour, so that either flour or starch is used. Compared to the case, the cleaning power could be remarkably improved.

According to one embodiment, the content ratio of flour and starch in the environmentally friendly detergent composition may be 1: 1. In such a content ratio, flour and starch are mixed well with each other, and due to sufficient expansion, a lot of bubbles are formed, thereby exhibiting excellent cleaning power.

In addition, the use of flour and starch has improved the contact area and adsorption capacity with contaminants, resulting in a synergistic effect on the cleaning power achieved by sodium hydroxide and sodium hydrogencarbonate.

Conventional natural detergents have been based on sodium hydroxide or sodium bicarbonate, or flour or starch based detergents. The reason is that the sodium hydroxide and sodium hydrogencarbonate aqueous solutions do not easily mix with flour or starch, and thus the flour or starch lowers the washing ability of sodium hydroxide or sodium hydrogencarbonate.

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

According to one embodiment, the environment-friendly detergent composition of the present invention may further include a plant-derived oil, in addition to the aforementioned components. The plant derived oil may be an aromatic 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 a unique scent, which helps lavender oils reduce tension and emotional stress, while marjoram oil helps calm the mind. In addition, the inherent fragrance emanating from the plant-derived oil can eliminate off-flavor of the environment-friendly detergent composition.

Plant-derived oils may be included in amounts to remove odors. 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 cooking oil.

According to one embodiment, the eco-friendly detergent composition of the present invention may further include a moisturizing agent, in addition to the above-described components.

The moisturizing agent may be one or more selected from the group consisting of glycerin, glycerol, propane triol or polyhydric alcohols. The moisturizer can make the skin soft and smooth.

Moisturizers can be used within a range that does not impair the cleaning power of the environment-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 cooking oil.

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

a) adding sodium hydroxide to purified water to prepare an aqueous sodium hydroxide solution;

b) performing a first saponification reaction of adding cooking 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), adding a sodium bicarbonate aqueous solution to perform a second saponification reaction.

In the step b), when cooking oil is added to the sodium hydroxide solution, a reaction is performed in which a fatty acid of the cooking oil and an alkali cation combine to form a fatty acid salt, and this reaction is called a saponification reaction.

The preparation method is carried out at room temperature and in aqueous solution. Specifically, after adding sodium hydroxide to purified water to prepare an aqueous sodium hydroxide solution, the saponification reaction proceeds in an aqueous solution by adding cooking oil.

Step c) comprises mixing the flour and starch with water and then heating to prepare a mixture of flour and starch. Flour and starch could be mixed with the first saponification composition by mixing with water and then heating to add to the mixture in the form of a pool.

The step d) includes dissolving sodium hydrogen carbonate in water to prepare an aqueous sodium hydrogen carbonate solution. Sodium bicarbonate aqueous solution is an eco-friendly additive that absorbs, deodorizes, neutralizes, and softens, and is completely decomposed after use. Therefore, the cleaning power can be improved due to the addition of the sodium bicarbonate solution. In addition, since sodium hydrogen carbonate is added in the form of an aqueous solution, it may be uniformly mixed in the composition.

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

After the step d), it may further comprise the step of adding a moisturizer.

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

Preparation Example 1

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

Preparation Example 2

Prepared in the same manner as in Preparation Example 1, to prepare an environment-friendly detergent composition containing no starch.

Preparation Example 3

Prepared in the same manner as in Preparation Example 1, to prepare an environment-friendly detergent composition containing no flour and starch.

Preparation Example 4

Prepared in the same manner as in Preparation Example 1, to prepare an environmentally friendly detergent composition containing a sodium hydroxide content of 3 kg.

Preparation Example 5

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

Preparation Example 6

Prepared in the same manner as in Preparation Example 5, to prepare an environment-friendly detergent composition containing no starch.

Preparation Example 7

Prepared in the same manner as in Preparation Example 5, to prepare an environment-friendly detergent composition containing no flour and starch.

Preparation Example 8

Prepared in the same manner as in Preparation Example 5, to prepare an environmentally friendly detergent composition containing a sodium hydroxide content of 1.0 kg.

Experimental Example (Sensory Evaluation of Detergent Composition)

Ten volunteers (five males and five females) were supported, and the sensory evaluation was performed through the naked eye.

Eight pieces of 10 cm × 10 cm cotton fibers and eight 1000 ml beakers were prepared. Edible oil was applied to cotton fibers and dried. Thereafter, 400 ml of water and 10 g of the composition prepared in Preparation Examples 1 to 8 were added to a 1000 ml beaker, followed by sufficient stirring. After immersing cotton fibers in the beaker for 1 minute, and then collecting and drying the cotton fibers, the degree of staining of grease was visually confirmed, and the results are shown in the following table as scores.

The case where the grease was not visible to the naked eye was evaluated by 10 points, and the case where the grease was about the same level as before the washing was evaluated by 0 points.

The score below is the average value of the results evaluated by the volunteers after the same experiment was performed three times.

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

As shown in the above table, Example 1 and Example 5 using the detergent composition blended with the composition ratio of the present invention is Example 2, 3, 6, and 7, the compounding ratio using the detergent composition does not contain any component The oil-decomposed cleaning effect was superior to Examples 4 and 8 using different detergent compositions. In addition to the cleaning effects of sodium hydroxide and sodium hydrogen carbonate, the detergent composition of the present invention has the effect of adsorbing oil to the porous space of flour and starch. It is thought to have shown a synergistic effect on the cleaning power in combination.

In addition, by adding a small amount of lavender natural oil to the detergent composition blended in the composition ratio of the present invention, the off-flavor of the detergent composition was removed, and the stress relieving effect was also expected by the lavender flavor.

In addition, a small amount of the humectant was further added to the detergent composition blended in the composition ratio of the present invention, thereby maintaining smooth skin even after using the detergent.

Claims (10)

cooking oil; Purified water; Sodium hydroxide; Sodium bicarbonate; flour; And an environmentally friendly detergent composition comprising starch,
Based on 100 parts by weight of the cooking oil, 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 bicarbonate, 1 to 15 parts by weight of flour, and 1 to 15 parts by weight of starch,
The content ratio of sodium hydroxide and sodium bicarbonate in the environmentally friendly detergent composition is 4: 1 to 2: 1, environmentally friendly detergent composition. The method of claim 1,
The eco-friendly detergent composition further comprises a plant-derived oil, eco-friendly detergent composition. The method of claim 2,
The plant-derived oil is lavender oil or marjoram oil, eco-friendly detergent composition. The method of claim 1,
The cooking oil is waste cooking oil, eco-friendly detergent composition. The method of claim 1,
The content of the sodium hydroxide is 30 to 40 parts by weight, environmentally friendly detergent composition. The method of claim 1,
The content of the sodium bicarbonate is 5 to 18 parts by weight, environmentally friendly detergent composition. The method of claim 1,
The starch is potato or corn derived starch, environmentally friendly detergent composition. A method of preparing an environment-friendly detergent composition according to claim 1, wherein the method
a) adding sodium hydroxide to purified water to prepare an aqueous sodium hydroxide solution;
b) performing a first saponification reaction of adding cooking 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 step c), adding a sodium bicarbonate aqueous solution to perform a second saponification reaction;
Including,
The content ratio of sodium hydroxide and sodium bicarbonate in the environmentally friendly detergent composition is 4: 1 to 2: 1,
Process for preparing eco-friendly detergent composition. The method of claim 8,
Wherein c) step of mixing flour and starch with water and then heating, to prepare a mixture of flour and starch, manufacturing method of environmentally friendly detergent composition. The method of claim 8,
After the step d), further comprising the step of adding a plant-derived oil, manufacturing method of environmentally friendly detergent composition.