KR20030023393A - Liquid detergent composition - Google Patents

Abstract

PURPOSE: A liquid detergent composition is provided, which shows the improved stability due to a small change of viscosity irrespective of temperature and no phase separation and exhibits the improved cleansing power. CONSTITUTION: The liquid detergent composition comprises an anionic polymer represented by the formula 1; a surfactant; and a solvent, wherein m and n are independent each other and are an integer of 0-100; m+n is 20-70, preferably 30-50; and X is H, Na, K or an ammonium ion. Preferably the liquid detergent composition comprises 1-10 wt% of an anionic polymer represented by the formula 1; 5-40 wt% of at least one anionic surfactant selected from the group consisting of an alkyl benzenesulfonate, an α-olefin sulfonate, an alkanesulfonate, an alkyl sulfate and an α-sulfo fatty acid ester; 5-30 wt% of a nonionic surfactant; and 1-20 wt% of a solvent. Preferably the anionic polymer has a molecular weight of 500-6,000.

Description

Liquid detergent composition {LIQUID DETERGENT COMPOSITION}

The present invention relates to a liquid detergent composition, and more particularly, by including an anionic polymer having a function of dispersant, flocculant, thickener as well as metal ion chelate action can improve the cleaning of conventional liquid detergent products and various pollution It relates to a liquid detergent composition having an excellent cleaning performance for.

There are many liquid detergent compositions used as laundry detergents, among which liquid detergent compositions for adjusting the viscosity depending on the presence or absence of polymers are mainly used. Among them, the polymer applied to the conventional liquid detergent composition was used as a thickener and some recontamination preventing agent, and in the case of a non-viscous liquid detergent, an organic chelate builder was used without using a polymer material for cleaning.

However, most of them have the disadvantage of poor solubility in water or insufficient biodegradability.

In addition, although there is a liquid detergent composition using an insoluble zeolite, the method has a problem in that the stability of the composition is poor and is deposited on rivers or attached to clothes after washing.

Accordingly, an object of the present invention is to provide a liquid detergent composition which is stable in view of the problems of the prior art as described above, has little viscosity change and does not occur in phase separation, and has excellent cleaning power.

In order to achieve the above object, the present invention is a liquid detergent composition comprising a surfactant and a solvent,

It provides a liquid detergent composition comprising an anionic polymer represented by the following formula (1).

[Formula 1]

In Formula 1, m and n are each independently an integer of 0 to 100, m + n is preferably 20 to 70, more preferably 30 to 50; X is a hydrogen atom or a metal ion selected from sodium, potassium and ammonium ions.

In addition, the present invention is 5 to 40% by weight of an anionic surfactant selected from the group consisting of alkylbenzene sulfonate, alpha olefin sulfonate, alkanesulfonate, alkyl sulfate, and alpha sulfo fatty acid ester salt; b) 5 to 30% by weight of nonionic surfactant; 1 to 10% by weight of the anionic polymer represented by Formula 1; Solvent 1-20 wt%; And it provides a liquid detergent composition comprising the remaining water.

Hereinafter, the present invention will be described in detail.

The present inventors found that the selective cleaning performance of the anionic polymer having a specific molecular weight is significantly improved, and particularly, when the pH range is adjusted to 7 to 13, the cleaning improvement effect of the polymer is most excellent. It became.

Liquid detergent composition of the present invention comprises the anionic polymer of the formula (1). The anionic polymer of Formula 1 serves to improve the stability of the detergent composition and excellent cleaning power.

The anionic polymer of Chemical Formula 1 used in the present invention has an amino acid group composed of peptide bonds. These anionic polymers have good solubility in water and show high biodegradability and excellent chelate action. That is, the anionic polymer of Chemical Formula 1 is included in the liquid crystal cleaner composition, and functions as a dispersant, a flocculant, a thickener, as well as a metal ion chelate, thereby improving cleaning of conventional liquid detergent products, and excellent cleaning for various contaminants. It has a role to have performance.

It is preferable that the molecular weight of the anionic polymer of the said Formula (1) is 500-6,000, More preferably, it is 3,000-5,000.

In the liquid detergent composition of the present invention, the anionic polymer of Chemical Formula 1 is preferably contained in 0.5 to 10% by weight. If the anionic polymer is used in less than 0.5% by weight, the cleaning function is weak due to lack of chelating force, when used in excess of 10% by weight is uneconomical and does not appear to further improve the cleaning function. Therefore, the anionic polymer is improved in viscosity and washing function appropriate when used within the above range.

The liquid detergent composition of the present invention includes a conventional surfactant. Such surfactants include anionic surfactants and nonionic surfactants.

The anionic surfactant shows an excellent cleaning effect, the content is preferably used in 5 to 40% by weight, more preferably 15 to 30% by weight. Specific examples of the anionic surfactant include at least one selected from the group consisting of alkylbenzene sulfonates, alpha olefin sulfonates, alkanesulfonates, alkyl sulfates, and alpha sulfo fatty acid ester salts.

In addition, the nonionic surfactant is preferably used in 5 to 30% by weight, more preferably 8 to 20% by weight. Specific examples thereof include alkyl polyoxyethylene ether, alkyldimethylamine oxide, fatty acid diethanolamide, and of these, alkyl polyoxyethylene ether is preferred. The alkyl polyoxyethylene ether has excellent low temperature stability when the EO addition mole number is 12 or more, preferably 12 to 30, and low temperature stability when the addition mole number is less than 12 or more than 30.

The liquid detergent composition of the present invention is prepared by adding the above components to a suitable solvent. The amount of the solvent used is preferably 1 to 20% by weight, more preferably 3 to 10% by weight. When the content of the solvent is less than 1% by weight or more than 20% by weight, the liquid detergent composition becomes unstable, which is not preferable. The solvent is an organic solvent, for example, ethanol, ethylene glycol, propylene glycol, polyethylene glycol, and the like, of which propylene glycol is preferable.

In addition, the liquid detergent composition of the present invention includes one or more additives selected from bactericides, flavors, antifoaming agents and dyes as necessary. It is preferable that the usage-amount of such an additive is 0.1 to 3 weight%.

In addition, the liquid detergent composition of the present invention contains water as the remaining components in addition to the above components.

In a preferred embodiment of the present invention, the liquid detergent composition is an anionic surfactant selected from the group consisting of a) alkylbenzene sulfonates, alpha olefin sulfonates, alkanesulfonates, alkyl sulfates, and alpha sulfo fatty acid ester salts. 15 to 30 weight percent; b) 8 to 20% by weight of nonionic surfactant; c) 0.5 to 10 wt% of the anionic polymer represented by Formula 1; d) 3 to 10 weight percent of a solvent; e) 0.1 to 3% by weight of at least one additive selected from the group consisting of fungicides, flavors, dyes, and antifoaming agents; And f) water as remainder.

In addition, in the liquid detergent composition of the present invention, when the pH is 7 to 13, since the washing effect of the polymer is the best, it is preferable to adjust the pH within the above range. The pH adjustment is controlled using an acid or a base commonly used, and sodium hydroxide or citric acid may be preferably used.

As described above, the liquid detergent composition of the present invention includes the anionic polymer of the formula (1), including various surfactants and fungicides can be effective cleaning when applied as a laundry detergent.

Hereinafter, the present invention will be described in more detail based on the following examples. However, the following examples are provided to help the understanding of the present invention, and the scope of the present invention is not limited thereto.

[Examples 1-2 and Comparative Examples 1-4]

The liquid detergent compositions of Examples 1 to 2 and Comparative Examples 1 to 4 were prepared in the component ratios shown in Table 1 below.

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Ingredients (% by weight) AES ¹ 5 10 5 10 5 10 AS ² 8 3 8 3 8 3 Nonionic Surfactants (EO 10) ³ - - 12 12 12 12 Nonionic Surfactants (EO 15) ⁴ 12 12 - - - - PG ⁵ 6 6 6 6 6 6 Anionic Polymer ⁶ 2 2 - - - - EDTA ⁷ - - 2 2 - - Additive ⁸ 0.5 0.5 0.5 0.5 0.5 0.5 water Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount Remaining amount

week)

1.AES: polyoxyethylene ether sulfate ester salt (EO 3 or 5)

2. AS: Sulfate ester salt of higher alcohol

3. Nonionic surfactant (EO 10): Alkyl polyoxyethylene ether with 10 addition of EO

4. Nonionic surfactant (EO 15): Alkyl polyoxyethylene ether with 15 EO added

5. PG: Propylene Glycol

6. Anionic Polymer: Polymer of Formula 1a (Molecular Weight: 3,600)

[Formula 1a]

Wherein m is 20 and n is 10.

EDTA: ethylenediaminetetraacetic acid

8. Additives: Mixture of fungicides, fragrances, defoamers

Experimental Example

The liquid detergent compositions of Examples 1 to 2 and Comparative Examples 1 to 4 were subjected to the stability and detergency test in the following manner.

Stability experiment

The pH of the liquid detergent compositions of Examples 1 to 2 and Comparative Examples 1 to 4 was adjusted to 7 (error 0.2) using NaOH and citric acid, and then placed in a 100 ml flask at low temperature (-4 ° C) and room temperature ( 25 ° C.), and stability after 7 days storage at high temperature (40 ° C.) was evaluated. These stability evaluations are divided into three states as follows, and the results are shown in Table 2 below.

○: Stable state with little change in viscosity and no phase separation

△: Viscosity rises rapidly and is slurried or suspended

×: completely solidified or in which phase separation occurs

Cleaning power test

Experimental method is a washing machine with a washing temperature of room temperature (25 ℃), detergent concentration 1 g / 1L washing water, put the EMPA-104 (JIS contaminated cloth) as a contaminated cloth in the washing machine model TERG-OTOMETER, washed for 10 minutes And rinsed twice for 3 minutes and then rinsing power was evaluated. Washing power evaluation method is evaluated in three steps as follows and the results are shown in Table 2 below.

◎: superior to commercial liquid detergent

○: equivalent to commercial liquid detergents

×: falling compared to commercially available liquid detergents

division Example 1 Example 2 Comparative Example 1 Comparative Example 2 Comparative Example 3 Comparative Example 4 Stability Low temperature (-4 ℃) ○ ○ × × △ ○ Room temperature (25 ℃) ○ ○ ○ ○ ○ ○ High temperature (40 ℃) ○ ○ ○ ○ ○ ○ Cleaning power ◎ ◎ ○ ○ × ×

As can be seen in Table 2, Examples 1 to 2 containing the anionic polymer of Formula 1a was found to be equal or more than the product stability compared to Comparative Examples 1 and 2. In particular, it was shown that the stability of Examples 1 to 2 added with the anionic polymer of the present invention is superior to Comparative Examples 1 and 2 to which EDTA was added. When the EO addition mole number of the polyoxyethylene ether is 15 mol or more, it can be seen that the stability at low temperature is improved compared to Comparative Examples 1 to 4.

In addition, when the anionic polymer is included in the cleaning power as in Examples 1 and 2, the cleaning power is superior to the non-use of Comparative Examples 1 and 4, and it is also superior to Comparative Examples 1 and 2 to which EDTA is added. have.

As described above, the liquid detergent composition of the present invention has an effect of excellent stability and excellent cleaning function because there is little change in viscosity and no phase separation occurs at low temperature, room temperature and high temperature regardless of temperature.

Claims (7)

In a liquid detergent composition comprising a surfactant and a solvent, Liquid detergent composition comprising an anionic polymer represented by the following formula (1): [Formula 1] In Formula 1, m and n are each independently an integer of 0 to 100, m + n is preferably 20 to 70, more preferably 30 to 50; X is a hydrogen atom or a metal ion selected from sodium, potassium and ammonium ions. The method of claim 1, Liquid detergent composition having a molecular weight of 500 to 6,000 of the anionic polymer. The method according to claim 1 or 2, Liquid detergent composition is an amount of the anionic polymer is 0.5 to 10% by weight. 5 to 40% by weight of an anionic surfactant selected from the group consisting of alkylbenzene sulfonates, alpha olefin sulfonates, alkanesulfonates, alkyl sulfates, and alpha sulfo fatty acid ester salts; 5 to 30% by weight of nonionic surfactant; 1 to 10% by weight of the anionic polymer represented by Formula 1; Solvent 1-20 wt%; And, as remainder, water, liquid detergent compositions: [Formula 1] In Formula 1, m and n are each independently an integer of 0 to 100, m + n is preferably 20 to 70, more preferably 30 to 50; X is a hydrogen atom or a metal ion selected from sodium, potassium and ammonium ions. The method of claim 4, wherein The liquid detergent composition further comprises 0.1 to 3% by weight of at least one additive selected from the group consisting of fungicides, flavors, dyes, and antifoaming agents. The method of claim 4, wherein The nonionic surfactant is a liquid detergent composition of the alkyl polyoxyethylene ether to which 15 to 30 ethylene oxide (EO) is added. The method according to claim 1 or 4, Liquid detergent composition pH 7 of the liquid detergent composition.