KR19980084289A - Solid kitchen detergent composition - Google Patents

Abstract

The present invention contains higher alkyl ether sulfates and higher alcohol sulfates as anionic detergent active materials in detergent activity, and contains fatty acid ethanol amides and polyoxyethylene alkyl ethers as nonionic detergent active materials, wherein the anionic detergent actives The weight ratio of the mild detergent active substance is in the range of 1: 4 to 4: 1, and relates to a solid kitchen detergent composition characterized by containing polyethylene glycol as a phase stabilizer and dissolution aid.

Description

[Name of invention]

Solid kitchen detergent composition

Detailed description of the invention

[Purpose of invention]

The present invention relates to a solid dishwashing composition, particularly solid dishwashing composition suitable for washing dishes, ceramics, knives, cutting boards and pots by hand, and other household utensils.

[Technical field to which the invention belongs and the prior art in that field]

Conventionally, in order to wash the dishes generated after three meals a day, they are washed in a flowing stream or diluted with ashed water and used for dish washing, or synthetic soaps are prepared using oil and caustic soda. Washed.

In recent years, due to the development of scientific civilization and the development of the surfactant industry, dishwashing detergents have been liquefied and liquid dishwashing detergents having 10% -50% of its active component have been widely used. The present invention relates to a solid kitchen detergent having a high detergency and a high foaming power as a higher active ingredient, overcoming the limitations of the characteristics of the raw materials and solubilization technology used in the kitchen detergent as a household kitchen detergent.

Solid kitchen detergents currently on the market are classified into two general types. The first form uses alkyl benzene sulfonate (ABS) as the main active ingredient. The solid dishwashing detergent is a surfactant raw material extracted from petroleum by alkyl benzene sulfonate (ABS), which is used as a main component thereof, which has a good detergency and foaming ability but low biodegradability and severe skin irritation.

The second type is soap which neutralizes waste cooking oil with caustic soda, or soap which simply neutralizes fatty acid with caustic soda, which alleviates the problem of biodegradability and skin irritation to some extent, but the washing function and the main function of kitchen detergent Poor air bubbles have drawbacks that have a limit to attract consumers' attention.

Dishwashing detergent is a general form of liquid type is the mainstream, the liquid type is a general-purpose form that has been used since the beginning of the dishwashing detergent has the advantage of easy handling and easy to use, but the content of its active ingredient is about 10-50 If the amount is limited to about 50% or more, the solubilization of the surfactant becomes difficult, and the physical properties of the detergent itself are relatively low or it is difficult to maintain the liquid form. Solid kitchen detergents may contain more than about 50% of their active ingredients, thus exhibiting a strong cleaning effect against severe oil contamination or poorly cleaned soil when the same amount is used.

[Technical problem to be achieved]

Therefore, the present invention is to solve the problem of the solid kitchen detergent of the alkyl benzene sulfonate (ABS), which is a petroleum surfactant having a bad effect on the environment and the skin in the conventional solid kitchen detergent while deteriorating the function of cleaning power and foaming power An object of the present invention is to improve the soap-based existing solid kitchen detergent.

[Configuration and Function of Invention]

The present invention contains a higher alkyl ether sulfate of the following structural formula (1) and a higher alcohol sulfate of the following structural formula (2) as an anionic detergent active substance in detergent activity, and a fatty acid ethanol of the following structural formula (3) as a nonionic detergent active substance Amide and polyoxyethylene alkyl ether of formula (4), wherein the weight ratio of the anionic detergent active to the nonionic detergent active is in the range of 1: 4 to 4: 1 and is also used as a phase stabilizer and dissolution aid. It is related with the solid kitchen detergent composition characterized by containing the polyethyleneglycol of (5).

(1) RO ₁ (EO) _x Na (wherein R ₁ : 8-22, X: 1-5)

(2) RO ₂ SO ₃ Na (wherein R ₂ : 8-22)

(3) R ₃ CON (CH ₂ CH ₂ OH) _x (wherein R ₃ : 8-22, X: 1-2)

(4) R ₄ -O- (CH ₂ CH ₂ O) _x -R ₅ (wherein R ₄ : 8-22, X: 10-80)

(5) HO- (CH ₂ CH ₂ O) _x -H (wherein Mw: 400-9,000)

The solid kitchen detergent composition according to the present invention contains a detergent active material, which is composed of a synthetic anionic detergent active material and a nonionic detergent active material.

Synthetic anionic detergent actives according to the invention are suitable reaction products containing mixtures of alkyl groups having 8-22 carbon atoms in the molecular structure and groups selected from sulfonic acid or sulfuric acid ester groups and mixtures thereof.

In addition, water-soluble synthetic anionic detergent active compound compounds include ammonium salts (e.g. mono, di, triethanolamine), alkali metal salts (e.g. sodium, Potassium) and alkaline earth metal salts (eg calcium, magnesium) are preferred. Particularly preferred mixtures of anionic detergent actives are higher alkyl ether sulfates (2-8 in EO numbers) and higher alcohol sulfates.

The amount of the anionic detergent active substance used in the dish detergent composition of the present invention is usually 2 to 70 parts by weight, preferably 2 to 50 parts by weight, particularly preferably 5 to 40 parts by weight.

The amount of the higher alkyl ether sulfate used particularly preferably as the anionic detergent active substance is 1 to 70 parts by weight, preferably 2 to 50 parts by weight, more preferably 5 to 30 parts by weight. When the content of the higher alkyl ether sulfate is 5 parts by weight or less, the effect of the cleaning power is weakened, and when it is 30 parts by weight or more, difficulty in manufacturing due to high viscosity in the mixing process occurs. Here, the higher alkyl ether sulfate is used as the higher alkyl ether sulfate having 8 to 22 carbon atoms of the alkyl group as shown in the following structural formula.

Structural Formula: R ₁ O (EO) _x Na (wherein R ₁ : 8-22, X: 1-5)

The amount of the higher alcohol sulfate which is an anionic detergent used in the detergent composition of the present invention is 1 to 70 parts by weight, preferably 2 to 50 parts by weight, more preferably 5 to 30 parts by weight. Here, less than 2 parts by weight, the synergistic effect of the cleaning power and foaming power is weak, and more than 50 parts by weight causes a viscosity increase in the mixing process, such as higher alkyl ether sulfate, a manufacturing problem occurs. The higher alcohol sulfate used here is a higher alcohol sulfate having 8 to 22 carbon atoms of an alkyl group as in the following structural formula.

Structural formula: R ₂ OSO ₃ Na (wherein R ₂ : 8-22)

Suitable nonionic detergent active materials are compounds which can be broadly referred to as compounds produced by the condensation of certain hydrophilic alkylene oxides with aliphatic or alkyl aromatic organic hydrophobic compounds in nature.

Specific examples of the nonionic detergent active substance include products in which linear or branched C8-2 aliphatic alcohols and ethylene oxide are condensed.

In particular, the dish detergent composition of the present invention may use one or more mixtures of nonionic detergent active materials. Preferred mixtures of nonionic detergent active substances are fatty acid ethanol amides and poly oxyethylene alkyl ethers.

Fatty acid ethanol amide, which is a nonionic detergent, has one or two ethanol amides as shown in the following structural formula, and an alkyl group of fatty acid ethanol amida is 8 to 22.

Structural Formula: R ₃ CON (CH ₂ CH ₂ OH) _x (wherein R ₂ : 8-22, X: 1-2)

The amount of fatty acid ethanol amide is 1 to 70 parts by weight, preferably 2 to 50 parts by weight, more preferably 5 to 30 parts by weight. Herein, less than 2 parts by weight showed a weakening role of the increasing agent of washing and bubble generation, and more than 50 parts by weight of the foam and the stability of the rinsing by the bubble stability to reduce the rinsing function in the kitchen detergent.

In addition, as the nonionic active material, an alkyl group may use 8 to 22 linear alkyl groups, branched alkyl groups, and nonyl / phenyl groups as shown in the following structural formula, and an addition mole number of EO is 10 mol to 80 mol.

Structural Formula: R ₄ -O (CH ₂ CH ₂ O) _x -R (wherein R ₄ : 8-22, X: 10-80)

1 to 70 parts by weight of polyoxyethylene alkyl ether is preferably 2 to 50 parts by weight, more preferably 5 to 30 parts by weight or more. If the content of polyoxyethylene alkyl ether is less than 2 parts by weight, the role of the auxiliary increasing agent for washing and foaming is weak, and the amount of the nonionic surfactant is relatively increased at 50 parts by weight or more, so the role of the anionic surfactant is relatively high. As a result, the cleaning power and the bubble power are somewhat reduced.

When the anionic and nonionic detergent active materials are used together in the detergent composition of the present invention, the weight ratio of the anionic detergent active material to the nonionic detergent active material may vary, but is preferably 1: 9 to 9: 1, In particular in the range from 1: 4 to 4: 1.

The detergent composition of the present invention also preferably uses at least one water-soluble substance which acts as a phase forming and phase stabilizer and dissolution aid.

The phase stabilizer and dissolution aid in the detergent composition of the present invention uses polyethylene glycol having the following structural formula, which has a molecular weight of 200 to 10000, preferably 400 to 9000, more preferably 800 to 8000.

Structural Formula: HO- (CH ₂ CH ₂ O) _x -H Mw: 400 = 9,000

The amount of polyethylene glycol is 1 to 70 parts by weight, preferably 2 to 50 parts by weight, more preferably 5 to 35 parts by weight. If the amount of polyethylene glycol is less than 5 parts by weight of the solid form is not made well, and more than 35 parts by weight of the amount of the surfactant decreases due to the relative increase in proportion, the main function of the kitchen detergent is reduced.

The detergent composition of the present invention also contains a filler, which may act as a metal ion sequestrant. Fillers generally employ mainly soluble inorganic or inorganic salts, for example they may contain water-soluble inorganic or organic salts of lithium, magnesium, sodium, potassium and calcium. Preferred examples thereof include sodium sulfate, sodium oxalate, sodium succinate, sodium adiphate, sodium glutarate and sodium citrate.

Particularly preferably the filler used is sodium sulfate to sodium citrate and its amount is used in excess of detergent actives and phase stabilizers and is generally 30 to 98 parts by weight of the composition.

The detergent composition according to the present invention uses a raw material having a high melting point in order to maintain a solid state, and is prepared by heating it to a temperature above the melting point, mixing the mixture, and then cooling it.

First fatty acid ethanol amide, polyethylene glycol, polyoxyethylene alkyl ether is placed in a heat resistant container and blended and mixed while heating to about 70-90 ° C. At this time, the blending speed to be mixed should be blended at a slow speed of about 1000rpm or less. If the speed is too high, bubbles are contained when cooling to the final product due to foaming, thereby decreasing the hardness of the product. Add a composition such as higher alcohol sulfate and higher alkyl ether sulfate, and continue blending, and when it is thoroughly mixed, slowly add fillers such as sodium sulfate and sodium citrate. At this time, if the addition speed of the filler is added to the existing composition as it is a phenomenon that agglomeration occurs itself should be added slowly. Once the filler is fully dispersed, pour it slowly into the prepared container and cool it to produce a solid kitchen detergent.

Since the detergent composition of the present invention is in a solid state at room temperature, the mixture is cooled in a container capable of having a solid form at a high temperature state after mixing in manufacturing, and then cooled to form a solid shape in a desired container shape.

The detergent composition of the present invention is the same as the detergent used in kitchens and is suitable for hand washing of utensils, knives, cutting boards, pots and other household appliances commonly found in home kitchens and bathrooms.

The detergent composition of the present invention can be used as it is without dilution, and is suitable for wiping by using a surface that is stained directly with a cloth, brush, scrubber or sponge for easy application. After use, rinse any residual detergent residues and contaminants on the surface with clean water.

Hereinafter, the present invention will be described in detail with reference to Examples, but the technical scope of the present invention is not limited thereto.

[Comparative Example Kitchen Detergent Sample]

Two domestic commercial dish detergents were used in the experiment of the present invention.

A Dishwashing Detergent: Solid Dishwashing Detergent More Than 50% Alkylbenzene Hoalate

B dishwashing detergent: Solid dishwashing detergent containing more than 50% of soap (fatty acid or waste cooking oil as the main ingredient)

Each detergent sample was prepared, dried for 24 hours, and the hardness of each sample was measured with a rheometer.

Evaluation criteria: ○: Completely solid phase (hardness: 10 or more)

△: slightly bite image (hardness: 5-7)

X: Wavy image (hardness: 3 or less)

[Cleaning power]

Based on KS M 2716 method

Evaluation criteria: ◎ 90 or more ○ 85-89 △ 80-84 × 75-79

[Biodegradability]

Based on KS M 2714 method

[Bubble force]

Roth Miles (ROSS-MILES) method basis (amount of sample: 1 g per 11 water)

Measures the amount of bubbles generated by freely dropping 200 ml dish detergent solution into a 50 ml dish detergent solution at a height of 90 cm.

Evaluation standard: ○ Rich bubble (more than 400 ml)

△ Normal bubble (330-380 ml)

× poor foam (300ml or less)

[Skin Hypoallergenic Test]

The skin irritation test was carried out in the following manner.

① Test for irritation with closed cloth test

② 20 healthy men and women in their 20s and 30s

③ Dilute the dish detergent containing each extract to 1%

④ Dip each dilution solution into the skin irritation test chamber.

⑤ Apply each chamber to the inner part of the subject's arm

⑥ Determination of skin irritation with naked eye after 48 hours

Visual judgment criteria

TABLE 1

As shown in Comparative Examples 1 to 2 of Table 1, Comparative Example 1, which is a commercially available solid detergent for kitchen, uses alkylbenzene sulfonate (ABS) as the main active ingredient, and shows excellent cleaning and foaming power. B Biodegradability is very low and skin irritation is severely measured. In addition, the soap-type solid kitchen detergent of B-kitchen detergent was shown to be better in environment and skin than Comparative Example 1, as in Comparative Example 2, but the effect was poor in the cleaning and foaming power, which are the main functions of the kitchen detergent.

Comparative Example 3-7 and Example 1-7

The detergent compositions of Comparative Examples 3-7 and Example 1-7 were prepared according to the composition components and ratios shown in Tables 2 and 3 below, and the cleaning power, foaming power, comfort level, rinsability, biodegradability, and skin irritation were evaluated. .

TABLE 2

TABLE 3

The test results of Table 2 and Table 3 shows that the effect on the performance of each component in the solid kitchen detergent composition of the present invention is greatly shown. Higher alkyl ether sulfates and higher alcohol sulfates are the main roles of the anionic detergent active ingredients, and if they are small or not used, they have a detrimental effect on detergency and foaming. In the following, the role of an increasing agent of washing and foaming was weak, and at 30 parts by weight or more, rinsing property was deteriorated due to excessive bubbles and bubble stability, thereby degrading rinsing function in kitchen detergent. In addition, polyoxyethylene alkyl ether, which is another cleaning component, had a weak role as an auxiliary increasing agent for cleaning and foaming at 5 parts by weight or less, as in fatty acid ethanol amide, and a nonionic surfactant content was relatively high at 30 parts by weight or more. Increasingly, the role of the anionic surfactant is relatively reduced, indicating a phenomenon in which the detergency is somewhat reduced. Both biodegradability and skin irritation were excellent.

In addition, polyethylene glycol, a phase stabilizer, was not well formed in the solid form at 5 parts by weight or less, and at 35 parts by weight or more, the content of the surfactant decreased due to a relative increase in proportion, resulting in a decrease in the main function of the dish detergent.

Claims (6)

The fatty acid ethanol amide of the following structural formula (3) is used as the nonionic detergent active substance, using the higher alkyl ether sulfate of the following structural formula (1) and the higher alcohol sulfate of the following structural formula (2) as the anionic detergent active substance in the detergent activity. The polyoxyethylene alkyl ether of the formula (4) is used, and the weight ratio of the anionic detergent active material to the nonionic detergent active material is in the range of 1: 4 to 4: 1, and is also used as a phase stabilizer and a dissolution aid. A solid kitchen detergent composition comprising polyethylene glycol). (1) RO ₁ (EO) _x NaR ₁ : 8-22, X: 1-5 (2) RO ₂ SO ₃ NaR ₂ : 8-22 (3) R ₃ CON (CH ₂ CH ₂ OH) _x R ₃ : 8-22, X: 1-2 (4) R ₄ -O (CH ₂ CH ₂ O) _x -R ₅ R ₄ : 8-22, X: 10-80 (5) HO- (CH ₂ CH ₂ O) _x -HMw: 400-9,000 2. The solid dishwashing detergent composition of claim 1, wherein the anionic detergent active material is a water soluble anionic sulfated or sulfonated group containing an alkyl group having from 8 to 22 carbon atoms per molecule. The solid dishwashing detergent composition of claim 1, wherein the nonionic detergent active material is a water-soluble nonionic material comprising an alkyl group having 8 to 22 carbon atoms per molecule. The solid kitchen detergent composition according to claim 1, wherein the phase stability and the molecular weight of the dissolution aid material are 800 to 8,000. The solid kitchen detergent composition according to claim 1, further comprising a filler. 6. The solid dishwashing detergent composition according to claim 5, wherein the filler is sodium sulfate or sodium citrate.