KR20040033379A - Liquid detergent composition - Google Patents

Abstract

PURPOSE: A liquid detergent composition is provided, to improve a cleansing effect, a softening effect and an antistatic property and to reduce stimulus to the skin. CONSTITUTION: The liquid detergent composition comprises a polyoxyethylene lauryl ether-based nonionic surfactant and a cationic surfactant containing a quaternary ammonium salt having two alkyl groups in the ratio of 0.3:0.7 to 0.8:0.2 by mol. Preferably the content of the cationic surfactant is 1-20 wt% in the composition. Preferably the composition comprises further 5-40 parts by weight of an amphiphilic surfactant based on 100 parts by weight of the cationic surfactant.

Description

Liquid Detergent Composition {LIQUID DETERGENT COMPOSITION}

The present invention relates to a liquid detergent composition, and more particularly, to a liquid detergent composition which is excellent in washing effect, softening effect, antistatic property, and skin irritation resistance, and at the same time washes high-quality clothing.

In order to improve the detergency of the liquid detergent composition and lower the foamability, liquid detergent compositions comprising a nonionic surfactant added with ethylene oxide are already known and commercialized and widely applied.

In addition, a liquid detergent composition containing a cationic surfactant having low self-solubility, low foaming ability, excellent antimicrobial activity, wettability and fiber flexibility, and which does not precipitate at low temperatures is known.

In addition, various known liquid detergent compositions prepared by applying cationic surfactants. Specifically, a granular detergent composition comprising a water-soluble cationic surfactant and an anionic polymer in an anionic surfactant, a detergent composition in which an alkylamine oxide is used as an amphoteric surfactant, and an alkylamido propyl betaine as an amphoteric surfactant Detergent compositions, detergent compositions comprising alkylhydroxysulfobethane as amphoteric surfactants, detergent compositions containing imidazoline betaine as amphoteric surfactants and the like are known.

In order to solve the above problems, the present invention is not only excellent in the cleaning effect, softening effect, antistatic properties and skin irritation resistance, but also aims at a liquid detergent composition capable of washing high-quality clothing at the same time.

In order to achieve the above object, the present invention is a liquid comprising a polyoxyethylene lauryl ether-based nonionic surfactant and a cationic surfactant containing a quaternary ammonium salt having two alkyl groups in a molar ratio of 0.3: 0.7 to 0.8: 0.2 It provides a detergent composition.

Hereinafter, the present invention will be described in detail.

The present inventors have studied a liquid detergent composition which is superior in cleaning and softening effect to a conventional liquid detergent composition, and has a cationic interface containing a polyoxyethylene lauryl ether-based nonionic surfactant and a quaternary ammonium salt having two alkyl groups. As a result of preparing a liquid detergent composition by adjusting the activator at a specific ratio, it was confirmed that not only the washing effect, the softening effect, the antistatic property, and the skin irritation were excellent, but also the washing of high-quality clothing was possible at the same time. The invention was completed.

The liquid detergent composition of the present invention is characterized in that it comprises a polyoxyethylene lauryl ether-based nonionic surfactant and a cationic surfactant containing a quaternary ammonium salt having two alkyl groups in a molar ratio of 0.3: 0.7 to 0.8: 0.2. . In addition, the detergent composition of the present invention further comprises a cationic surfactant, and contains a residual amount of water.

Cationic surfactant containing the quaternary ammonium salt having two alkyl groups used in the present invention is preferably included in 1 to 20% by weight, more preferably 1 to 10% by weight relative to the detergent composition. . If the content is less than 1% by weight, the softness of the fiber may be reduced after washing, and if the content exceeds 20% by weight, the viscosity may be too high, which may lower the stability of the product.

In the present invention, the cationic surfactant containing the quaternary ammonium salt having two alkyl groups may be used alone or in combination with a conventional cationic surfactant. At this time, the quaternary ammonium salt is preferably included in 10 to 100% by weight of the total amount of the cationic surfactant, more preferably 50 to 100% by weight.

The molecular weight of the quaternary ammonium is preferably 1,000 to 50,000, in particular, dialkyl dimethyl ammonium chloride represented by the following formula (1), dialkyl imidazolynium salt represented by the following formula (2) ), Dialkylamido quaternary ammonium salts represented by the following formula (3), or ester quat type (ester quat type) is preferably used.

[Formula 1]

[Formula 2]

[Formula 3]

In the formula of Formula 1 to 3,

R is independently an alkyl group or alkenyl group having 8 to 20 carbon atoms, preferably an alkyl group or alkenyl group having 12 to 18 carbon atoms.

The polyoxyethylene lauryl ether-based nonionic surfactant used in the present invention is preferably included in a molar ratio of 0.3: 0.7 to 0.8: 0.2 with a cationic surfactant containing a quaternary ammonium salt having two alkyl groups.

In addition, the liquid detergent composition of the present invention may further include an amphoteric surfactant for reducing skin irritation.

The amphoteric surfactant is preferably contained in an amount of 5 to 40 parts by weight based on 100 parts by weight of a cationic surfactant containing a quaternary ammonium salt having two alkyl groups. If the content is less than 5 parts by weight, there is a problem that the emulsion stability of the product is poor over time, and if it exceeds 40 parts by weight, not only the stability of the product, but also the problem of inhibiting the softening effect by impeding the adsorption of the cationic surfactant with clothing. There is this.

The amphoteric surfactant is alkyl dimethyl betaine having 8 to 22 carbon atoms, alkyl dimethyl hydroxy ethyl having 8 to 22 carbon atoms, alkyl dimethyl hydroxy alkylamine oxide having 8 to 22 carbon atoms, alkyl dimethyl hydroxypropyl betaine, lecithin, Or mixtures thereof.

In addition, the liquid detergent composition of the present invention may further include at least one component selected from the group consisting of an inorganic polymer, a viscosity modifier, and a solubilizer.

The inorganic polymer acts to prevent the desalting or desalting of the fibers.

The solubilizer serves to ensure the transparent appearance and low temperature stability of the liquid detergent composition, for example, ethanol, ethylene glycol, propylene glycol, polyethylene glycol and the like.

In addition, the liquid detergent composition of the present invention may further include additives such as perfumes, preservatives, fungicides, optical brighteners, pigments, antioxidants, pH adjusters, antifoaming agents up to 0.3% by weight.

Liquid detergent composition of the present invention containing the above components can significantly improve the softness of the fiber after washing, compared to the conventional liquid detergent, less skin irritation, mild bubbles and excellent cleaning effect, antistatic properties, etc. It works.

Hereinafter, preferred examples are provided to help understanding of the present invention, but the following examples are merely to illustrate the present invention, and the scope of the present invention is not limited to the following examples.

EXAMPLE

Examples 1-4

As shown in Table 1, imidazolinone quaternary ammonium salt as a cationic surfactant, polyoxyethylene lauryl ether as a nonionic surfactant, alkylamine oxide as an amphoteric surfactant, an inorganic polymer, a viscosity modifier, polyethylene glycol as a solubilizer A liquid detergent composition was prepared, comprising the additive, and the balance of water.

Comparative Examples 1 and 2

To prepare a liquid detergent composition according to the composition shown in Table 1.

Classification (wt%) Example Comparative example One 2 3 4 One 2 Imidazolinone quaternary ammonium salt One 3 6 10 - 10 Polyoxyethylene lauryl ether One 5 10 20 One - Alkylamine oxide .3 0.3 0.3 0.3 - One Inorganic polymers One One One One - 20 Viscosity Modifier 0.5 0.5 0.5 0.5 0.5 0.5 Polyethylene glycol 5 5 5 5 5 5 additive A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount A reasonable amount water Remaining balance Remaining balance Remaining balance Remaining balance Remaining balance Remaining balance

Experimental Example Performance evaluation

Using the liquid detergent composition prepared in Examples 1 to 4 and Comparative Examples 1 or 2, the cleaning effect, the softening effect, the antistatic effect, and the skin irritation (wrapping test) were measured according to the following method, and the The results are shown in Table 6 below.

(Cleaning effect)

The cotton and wool fabrics are evenly coated with tallow and soybean oil, and then cut into two pieces of 8 cm x 12 cm, respectively, and the colorimeters (Japan testing Co.) , INC.) Was used to measure the whiteness. Subsequently, the liquid detergent compositions of Examples 1 to 4 and Comparative Examples 1 or 2 were added to a stirred mixed cleaning power tester (Tergotometer, United Sates Testing Co., Inc.) and washed at 100 rpm for 10 minutes. After completely drying it, the whiteness was again measured by the color limiter, and the decontamination rate before and after washing was determined according to the evaluation criteria shown in Table 2 below.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Whiteness (%) More than 75% 70-75% 65-70% Less than 65%

(Flexibility effect)

Commercially available 100% cotton towels were repeatedly washed five times with a washing machine using the liquid detergent composition of Examples 1 to 4 and Comparative Examples 1 or 2 as a standard laundry detergent, and dehydrated at 20 ° C. and relative humidity. Conditioned for 24 hours at 65% conditions. Then, the sensory evaluation was performed for the experienced subjects by the degree of sensation on the cotton towels washed with the liquid detergent compositions of Examples 1 to 4 and Comparative Examples 1 or 2, respectively. The softness point for the touch was given from the lowest 1 point to the highest 5 points, and this was repeated three or more times to measure the softening effect with the average value. Evaluation criteria are shown in Table 3 below.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Softening effect 4.5 or more 3.5 to 4.5 2.5 to 3.5 Less than 2.5

(Antistatic effect (friction stand voltage measurement method))

KS K-0950's dyeing fastness test white cotton cloth, back polyester cloth and nylon cloth (each manufactured by Korea Apparel Testing Institute) were cut into 4cm × 6cm size, respectively, and casted in the same manner as in the above softening test. Then dehydrated and conditioned for 24 hours at 20 ° C. and 40% relative humidity. Then, the specimen was subjected to a rotary static tester (Rotary static tester, Daie Kagaku Co., Ltd.) to measure the generated large voltage by rotating friction at 600 rpm for 60 seconds according to the KS K-0555B test method. . The measurement test procedure was repeated three or more times, and the antistatic property was evaluated by the average value. Evaluation criteria are shown in Table 4 below.

Evaluation results Very good (◎) Excellent (○) Normal (△) Bad (×) Cotton cloth Less than 100 V 100-300 V 300-500 V 500 V or more Back polyester cloth Less than 800 V 800-1200 V 1200-1800 V 1800 V or more Nylon cloth Less than 800 V 800-1200 V 1200-1800 V 1800 V or more

(Skin irritation (closure test))

Each of the patch samples of the 2% solution of the liquid detergent composition of Examples 1 to 4 and Comparative Examples 1 or 2 was attached to the upper arm of 15 test subjects, and then removed after 48 hours. The degree of erythema after 4 hours of removing the patch sample was visually determined, and evaluated according to the evaluation criteria of Table 5 below.

Score 0 One 2 3 Visual judgment No erythema Weak erythema in the form of red spots Irregular erythema (medium) Strong erythema

division Example Comparative example One 2 3 4 One 2 water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Performance Cleaning effect ◎ ◎ ◎ ◎ × ○ Softening effect ◎ ◎ ◎ ◎ × ○ Antistatic effect ◎ ◎ ◎ ◎ × ○ Skin irritation 0 0 0 0 2 0

Through the above Table 6, the liquid detergent composition of Examples 1 to 4 prepared according to the present invention is superior to the detergent composition of Comparative Example 1 or 2, the cleaning effect, softening effect, and antistatic effect, the skin irritation surface You can also check the safety of the human body.

The liquid detergent composition according to the present invention has an excellent cleaning effect, softening effect, and antistatic property. In addition, it contains an amphoteric surfactant and low irritation to the human skin, there is an effect that can be used in high-end garment washing, such as silk, wool, knit, etc. that can be washed with water.

Claims (4)

A liquid detergent composition comprising a polyoxyethylene lauryl ether-based nonionic surfactant and a cationic surfactant containing a quaternary ammonium salt having two alkyl groups in a molar ratio of 0.3: 0.7 to 0.8: 0.2. The method of claim 1, A liquid detergent composition comprising a polyoxyethylene lauryl ether-based nonionic surfactant and a cationic surfactant containing a quaternary ammonium salt having two alkyl groups in a molar ratio of 0.3: 0.7 to 0.8: 0.2. The method of claim 1, Cationic surfactant containing a quaternary ammonium salt having two alkyl groups is a liquid detergent composition containing 1 to 20% by weight relative to the detergent composition. The method of claim 1, The liquid detergent composition further comprises 5 to 40 parts by weight of amphoteric surfactant per 100 parts by weight of a cationic surfactant containing a quaternary ammonium salt having two alkyl groups.