KR20110019921A - Liquid detergent composition - Google Patents

Abstract

PURPOSE: A liquid detergent composition is provided to ensure excellent detergency while not damaging local physical damage to a washing material by adding a hydrogen peroxide stabilizer to a thickening composition by blending non-ionic surfactants. CONSTITUTION: A liquid detergent composition containing stable hydrogen peroxide comprises, based on the whole composition, (a) 0.1-10 weight% of hydrogen peroxide, (b) 0.1-40 weight% of non-ionic surfactants, (c) 0.1-10 weight% of a compound selected from boric acid, borax, borate and their mixture, (d) 0.1-20 weight% of a polyol compound, (e) 0.1-10 weight% of organic acids, (f) 0.1-5 weight% of water-soluble polymer, (g) 0.1-10 weight% of pH adjusting agent, and (h) 5-95 weight% of water.

Description

Liquid detergent composition {LIQUID DETERGENT COMPOSITION}

The present invention relates to a liquid detergent composition containing hydrogen peroxide, stable and excellent in bleaching performance. Specifically, the present invention relates to a liquid detergent composition which exhibits excellent cleaning power by adding a hydrogen peroxide stabilizer to a thickening composition by blending a nonionic surfactant, without causing local physical damage to the object to be washed when diluted.

The liquid detergent composition containing hydrogen peroxide can be used for textile products such as clothing, and also has the advantage of being directly applied to contaminated parts and washed.

However, liquid detergent compositions containing hydrogen peroxide, due to the problem of the stability of hydrogen peroxide, it is common to keep the overall pH of the composition acidic, and thus a decrease in bleaching power could not be avoided. Therefore, in order to alleviate these disadvantages, methods of increasing the pH at the time of dilution by combining borate and polyol have been studied (Japanese Patent Laid-Open Nos. 6-100888, 7-53994 and 7-70593). No. 10-17895).

On the other hand, when the liquid detergent composition is used for an absorbent article such as a textile product, an attempt to increase the viscosity of the liquid detergent composition is made so that the liquid detergent composition remains on the surface and exerts sufficient cleaning power against contamination. Has been made.

In general, a method of increasing the viscosity of an aqueous solution may include a polymeric thickener such as acrylic polymer, xanthan gum, or polyvinyl alcohol, or a clay material such as smectite. Although the method of the said method is used, stability is inferior in the liquid detergent composition containing hydrogen peroxide, Furthermore, it is difficult to obtain a sufficient thickening effect because of an apparent turbidity problem. Therefore, in order to solve this problem, methods of blending specific nonionic surfactants have been examined (Japanese Patent Laid-Open Nos. 2005-170995, 2002-80895, 10-130693, 9-188895, 11-1193283). No. 2001-181695 and 2001-288497).

However, as described above, when the thickening composition by blending a nonionic surfactant is used for an absorbent cleansing material such as a textile product, local high concentration and high pH conditions are caused at the site of application during dilution. Abnormal activity of hydrogen peroxide is likely to cause physical damage to the objects to be cleaned.

Therefore, the present inventors add a hydrogen peroxide stabilizer to the thickening composition by the combination of non-ionic surfactants to solve the above problems, thereby having excellent cleaning power without causing local physical damage to the object to be cleaned when diluted. An attempt was made to provide a liquid detergent composition.

An object of the present invention is to provide a liquid detergent composition having excellent cleaning power by adding a hydrogen peroxide stabilizer to a thickening composition by blending a nonionic surfactant, without causing local physical damage to the object to be washed when diluted. .

An object of the present invention is a liquid detergent composition comprising a compound selected from hydrogen peroxide, nonionic surfactant, boric acid, borax, boric acid and mixtures thereof as a bleach, a polyol compound, an organic acid, a water-soluble polymer, a pH adjuster and water, wherein the composition Is maintained at 4 to 7, it is achieved by providing a liquid detergent composition having excellent bleaching power by increasing the activity of hydrogen peroxide by increasing the pH upon dilution.

Specifically, the liquid detergent composition of the present invention for achieving the above object, (a) 0.1 to 10% by weight of hydrogen peroxide, (b) 0.1 to 40% by weight of nonionic surfactant, (c) boric acid, borax 0.1 to 10% by weight of a compound selected from borate and a mixture thereof, (d) 0.1 to 20% by weight of a polyol compound, (e) 0.1 to 10% by weight of an organic acid, (f) 0.1 to 5% by weight of a water-soluble polymer, (g a) a pH adjusting agent of 0.1 to 10% by weight, and (h) 5 to 95% by weight of water, wherein the pH at 20 ° C is 4 to 7.

In addition, the liquid detergent composition of the present invention is characterized in that, when diluted with water of 1000 vol.

The liquid detergent composition of the present invention is selected from (a) 0.1 to 10 wt% hydrogen peroxide, (b) 0.1 to 40 wt% nonionic surfactant, (c) boric acid, borax, borate and mixtures thereof based on the entire composition 0.1 to 10% by weight of the compound, (d) 0.1 to 20% by weight of the polyol compound, (e) 0.1 to 10% by weight of the organic acid, (f) 0.1 to 5% by weight of the water-soluble polymer, (g) 0.1 to 10% by weight of the pH adjuster And, and (h) 5 to 95% by weight of water, characterized in that the pH at 20 ℃ 4-7.

If the hydrogen peroxide component in the cleaning composition of the present invention is less than 0.1% by weight, the cleaning power is not sufficient, when more than 10% by weight hydrogen peroxide unstable phenomenon appears.

Nonionic surfactants that can be used in the present invention are nonionic surfactants having an oxyalkylene group, preferably a compound of formula (I), but are not limited to these compounds:

R ¹ -O-(C ₂ H ₄ O) _n -H ------- (1)

here,

R ¹ represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, preferably an alkyl group or alkenyl group having 12 to 14 carbon atoms,

n is an integer of the number average added mole number 0-20, Preferably it is an integer of 6-15, More preferably, it is an integer of 7-12.

If the nonionic surfactant component in the detergent composition of the present invention is less than 0.1% by weight, the cleaning power is insufficient, and if it exceeds 40% by weight, the high viscosity may cause local physical damage to the object to be cleaned when diluted.

Boron compounds usable in the present invention may be selected from compounds containing boron in the molecule, such as boric acid, sodium borate, potassium borate, ammonium borate, sodium tetraborate, potassium tetraborate, ammonium tetraborate and mixtures thereof It is not limited to compounds. In particular, the preferred boron compound in the present invention is boric acid.

When the boric acid-based component in the cleaning composition of the present invention is less than 0.1% by weight, the pH jumping efficiency is lowered, and when it exceeds 10% by weight, solubility is poor.

Polyol compounds that can be used in the present invention are glucose (glucose), mannose (galoseose), galactose (galactose), fructose (fructose), ribose (ribose), maltose (lactose), saccharose (saccharose), Sugars or sugar derivatives such as sorbitol and mannitol, butanediol, hexanediol, octanediol, decanediol and other alkyl diols and ethylene glycol ( Diol compounds such as ethylene glycol, propylene glycol, xylene glycol, and the like and mixtures thereof may be selected, but are not limited to these compounds. In particular, preferred polyol compounds in the present invention are sorbitol and mannitol.

When the polyol compound component in the cleaning composition of the present invention is less than 0.1% by weight, the pH jumping efficacy is not sufficient, and when it exceeds 20% by weight, the phase stability is lowered.

Organic acids that can be used as stabilizers of hydrogen peroxide in the present invention are monocarboxylic acids such as methane acid (HCOOH), ethanic acid (CH ₃ COOH), propanoic acid (CH ₃ CH ₂ COOH); Dicarboxylic acids such as oxalic acid (HOOC-COOH), malonic acid (HOOCCH ₂ COOH), and succinic acid (HOOC (CH ₂ ) ₂ COOH); Aliphatic such as palmitic acid (CH ₃ (CH ₂ ) ₁₄ COOH), stearyl acid (CH ₃ (CH ₂ ) ₁₆ COOH), oleic acid (CH ₃ (CH ₂ ) ₇ CH = CH (CH ₂ ) ₇ COOH) Carboxylic acid; Aromatic carboxylic acids such as benzoic acid (C ₆ H ₅ -COOH) and salicylic acid (C ₆ H ₅ (OH) COOH); Glycolic acid (HOCH ₂ COOH), citric acid (C ₃ H ₄ OH (COOH) ₃ ), lactic acid (CH ₃ CH (OH) COOH), pyruvic acid (CH ₃ COCOOH), malic acid (HOOCCH ₂ CH (OH) COOH ), Oxycarboxylic acids such as tartaric acid (HOOCCH (OH) CH (OH) COOH); Amino acids such as glutamic acid, aspartic acid, and mixtures thereof, but is not limited to these compounds.

In particular, preferred organic acids in the present invention are glycolic acid, citric acid, malic acid, oxalic acid, malonic acid and succinic acid, more preferably citric acid, oxalic acid and malonic acid.

When the organic acid component in the cleaning composition of the present invention is less than 0.1% by weight, hydrogen peroxide stabilization does not sufficiently occur, and when it exceeds 10% by weight, solubility is poor.

In the present invention, a water-soluble polymer that can be used as a stabilizer of hydrogen peroxide is a polymer that is soluble in water at room temperature. Such water-soluble polymers include gum arabic, dextrin, pectin, water-soluble soy polysaccharides, carboxy methyl cellulose, methyl cellulose, polyvinyl alcohol, Polyvinylpyrrolidone and mixtures thereof are preferred, but are not limited to these compounds. Particularly preferred water-soluble polymers in the present invention are polyvinylpyrrolidone.

When the water-soluble polymer component in the detergent composition of the present invention is less than 0.1% by weight, hydrogen peroxide stabilization does not sufficiently occur, and when it exceeds 5% by weight, solubility is poor.

As a pH adjusting agent that can be used in the present invention, monoethanolamine, diethanolamine, triethanolamine, triethanolamine, sodium hydroxide, potassium hydroxide, and mixtures thereof are preferred. It is not limited to these compounds. Particularly preferred pH adjusting agents in the present invention are diethanolamine, sodium hydroxide.

In the cleaning composition of the present invention, the hydrogen peroxide becomes unstable when the pH adjuster component is less than 0.1% by weight and more than 10% by weight.

In an embodiment of the present invention, the liquid detergent composition of the present invention consists of an oil-in-water type in which aqueous droplets contain a surfactant. Further, in an embodiment of the present invention, the viscosity (mPa.s) of the liquid detergent composition of the present invention in the oil-in-water type is 30 or more and less than 400.

The liquid detergent composition of the present invention has an effect of exhibiting excellent cleaning power by adding a hydrogen peroxide stabilizer to a thickening composition by blending a nonionic surfactant, without causing local physical damage to the object to be cleaned when diluted.

Hereinafter, the present invention will be described in more detail with reference to Examples and Comparative Examples. The following examples are merely illustrative of the present invention, but the present invention is not limited thereto.

Example 1-9 and Comparative Example 1-5

Table 1 shows the liquid detergent compositions having the components and contents shown in Table 1 below, and the pH of each stock solution (20 ° C.), and the pH of the liquid detergent after 1000 volume dilution with 20 ° C. water.

In order to evaluate the bleaching activation ability of the liquid detergent composition of the present invention, bleaching power was measured using tea, coffee, curry, and sugar beet contaminants.

(1) bleaching force measurement

A liquid detergent (1 g) was added to 1 liter of water at 25 ° C, and each contaminated cloth was added and measured using a Terg-O-Tometer for 10 minutes (120 rpm) at a hardness of 90 ppm (as CaCO ₃ ). It was. The evaluation was carried out by measuring the whiteness of the contaminated cloth before and after washing with a white scale, and converted to a value when the degree of washing in Comparative Example 1 was viewed as 100, and the evaluation results are shown in Table 1 below.

(2) hydrogen peroxide stability (50 ℃, hydrogen peroxide content after 1 month)

(2-1) Measuring method

1. Weigh about 10 g of liquid detergent composition.

2. The composition was dissolved using 25 ml of distilled water and 20 ml of reagent ethanol, and then 5 ml of 1:15 sulfuric acid solution and 10 ml of 10% KI solution were added and sealed, and left in a cool dark place for 1 hour.

3. 5 ml of starch reagent was added to the solution, and titrated with 0.1 N sodium thiosulfate solution having a known correction factor (the end point was changed from yellow to transparent color).

(2-2) Formula

Hydrogen peroxide content (%) = {(0.001701 × consumption ml × F) × 100} ÷ amount of sample

<Compound Component>

As each component in a table | surface, the following are used.

a-1; Hydrogen peroxide

b-1; Polyoxyethylene lauryl ether (ethylene oxide average added mole number 7)

c-1; Boric acid

d-1; Glucose

d-2; Sorbitol

d-3; Propylene glycol

e-1; Ethane acid

e-2; Oxalic acid

e-3; Citric acid

f-1; dextrin

f-2; Carboxyl Methyl Cellulose

f-3; Polyvinylpyrrolidone

g-1; Diethanolamine

h-1; Ion exchange water

TABLE 1

Example Comparative Example One 2 3 4 5 6 7 8 9 One 2 3 4 5




Liquid cleaners









*
Ingredient


a-1 2.5 5 10 5 5 5 5 5 5 0 5 5 5 5 b-1 20 20 20 20 20 20 20 20 20 20 20 20 20 20 c-1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 d-1 10 d-2 10 10 10 10 10 10 10 10 10 10 10 d-3 10 e-1 One e-2 One One One One One One One One One One e-3 One f-1 0.5 f-2 0.5 f-3 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.5 g-1 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 1.5 h-1 Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Balance Sum 100 100 100 100 100 100 100 100 100 100 100 100 100 100 (CD)
% By weight 15 15 15 15 15 15 15 15 15 15 15 15 15 15 PH of stock solution
(20 ℃) 5.3 5.2 5 5.5 5.4 5.2 5.2 5.2 5.3 5.1 5.1 5 5 4.9 PH after 1000 volumetric vessels
(20 ℃) 8.4 8.3 8 8.5 8.3 8 8.1 7.8 7.5 8.2 8.2 8 8.1 6.4 Hydrogen peroxide
Residual content (%) ** 95 96 81 79 80 89 88 85 84 0 70 80 38 76 Bleaching power
(%) 112 123 140 115 118 115 114 112 112 100 105 107 102 97

* Unit: weight%

** Determination of hydrogen peroxide content after 1 month at 50 ℃

As can be seen in Table 1, it can be seen that Examples 1 to 9 containing hydrogen peroxide have superior bleaching power than Comparative Example 1 containing no hydrogen peroxide.

In addition, Examples 1 to 9 have a higher hydrogen peroxide residual content and excellent bleaching power than Comparative Example 2, which does not include an organic acid as a hydrogen peroxide stabilizer. Meanwhile, Examples 4 and 5 show that there may be a difference in stabilization of hydrogen peroxide according to the type of organic acid.

In Comparative Example 3, which did not contain a water-soluble polymer, stabilization of hydrogen peroxide did not significantly decrease, but the bleaching power was lowered compared to Examples 1 to 9.

In addition, Examples 1 to 9 including the organic acid and the water-soluble polymer which is a hydrogen peroxide stabilizer as a composition of the present invention have a higher hydrogen peroxide residual content than the comparative example 4, and shows excellent bleaching power. Therefore, it can be seen that the organic acid and the water-soluble polymer which are the hydrogen peroxide stabilizer of the present invention increase the stability of hydrogen peroxide to increase its residual content, and thus the difference in the hydrogen peroxide residual content has a direct correlation with the bleaching power.

Comparative Example 5, which does not include the polyol compound, appears to have a lower bleaching power compared to Examples 1 to 9, which include the polyol compound, which indicates that the pH of the stock solution of Comparative Example 5 and the pH after 1000 vol. Therefore, it appears that the activity of hydrogen peroxide in these solutions is lowered.

Claims (5)

0.1 to 10 weight percent of a compound selected from (a) 0.1 to 10 weight percent hydrogen peroxide, (b) 0.1 to 40 weight percent nonionic surfactant, (c) boric acid, borax, borate and mixtures thereof, based on the entire composition, (d) 0.1 to 20% by weight of polyol compound, (e) 0.1 to 10% by weight of organic acid, (f) 0.1 to 5% by weight of water-soluble polymer, (g) 0.1 to 10% by weight of pH adjuster, and (h) 5 to water. 95% by weight, the hydrogen peroxide stable liquid detergent composition, characterized in that the pH at 20 ℃ 4-7. The liquid detergent composition according to claim 1, wherein the nonionic surfactant is a polyoxyalkylene ether-based nonionic surfactant having an oxyethylene group. The liquid detergent composition according to claim 1 or 2, wherein the pH of the dilution diluted with 1000 volume water is 7.5 or more and less than 9 at 20 ° C. A liquid detergent composition containing hydrogen peroxide according to claim 1, wherein the liquid detergent composition is an oil-in-water type containing a surfactant. The liquid detergent composition according to claim 4, wherein the viscosity (mPa.s) is 30 or more and less than 400.