JP2000008099A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition capable of expressing excellent color stability and useful as a detergent, etc., of clothes, dishes and hard surfaces by composing a specific aminopolycarboxylic acid and a specific soap and restricting a pH in a specific range. SOLUTION: This liquid detergent composition has a 7-11 pH and contains 0.2-5 wt.% of (A) a compound expressed by the formula [R is H, OH or a 1-3C alkyl; M is H, an alkaline (earth) metal, ammonium or a basic amino; A is H, OH or a group of the formula: COOM; is 0-5], [e.g. N,N-bis(carboxymethyl)serine 3 sodium salt] and 0.01-5 wt.% of (B) a soap consisting of an 8-22C fatty acid.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a liquid detergent composition which has a small change in hue even when stored for a long period of time, and is preferably used for clothing.

[0002]

2. Description of the Related Art One of the problems of liquid detergents is to improve aesthetics including transparency of the liquid. Liquid detergents are desirable to have attractive hues because the aesthetics of the composition are the key to consumer acceptance. Various dyes and turbidity agents have been used to enhance the attractiveness of products. Even when a dye is not used, it is required to be colorless and transparent. Although the appearance of the liquid detergent is important, problems often arise such as the color of the product changing over long periods of storage.

[0003]

As a method of suppressing these hue changes, the use of a reducing agent such as sodium sulfite is known, but the effect is not sufficient, and a liquid detergent composition having more excellent hue stabilization is known. Things are desired.

[0004]

The present invention relates to (a) a compound represented by the following general formula (I): 0.2 to 5% by weight;
A liquid detergent composition containing 0.01 to 5% by weight of a soap comprising a fatty acid having 8 to 22 carbon atoms and having a pH of 7 to 11 in the composition.

[0005]

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Wherein R is a hydrogen atom, a hydroxyl group or an alkyl group having 1 to 3 carbon atoms. n is 0 to 5, and A is a hydrogen atom, a hydroxyl group or COOM. However, R and A do not simultaneously become hydroxyl groups. M represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium or a basic amino group, and a plurality of Ms may be the same or different. ]

[0007]

BEST MODE FOR CARRYING OUT THE INVENTION The component (a) of the present invention is represented by the above general formula (I).
N, N-bis (carboxymethyl) serine salt represented by a), N, N-bis (carboxymethyl) glutamate represented by the following general formula (Ib), and the following general formula (Ic) N, N-bis (carboxymethyl) aspartate represented by the following formula: Especially in terms of performance (I
-A) and (Ib), among which (Ib) is preferable.

[0008]

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[0009]

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[0010]

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[In the formulas (Ia) to (Ic), M is the same as in the general formula (I). The component (a) is contained in the detergent composition in an amount of from 0.2 to 5% by weight, preferably from 0.
5 to 3% by weight is blended.

The soap of the component (b) used in the present invention comprises:
It is composed of a fatty acid having 8 to 22, preferably 12 to 20 carbon atoms, and two or more fatty acids may be mixed. The component (b) is contained in the detergent composition in an amount of 0.01 to 5 in terms of washing effect and hue stability.
%, Preferably 0.05 to 3% by weight.

The liquid detergent composition of the present invention can contain a non-soap surfactant, a builder, water and other components.

The non-soap surfactant is selected from anionic surfactants, nonionic surfactants, amphoteric surfactants, cationic surfactants and mixtures thereof.

Anionic surfactants include sulfates of alcohols, sulfates of ethoxylated alcohols, alkyl sulfates, alkyl benzene sulfonates, paraffin sulfonates, α-olefin sulfonates, α-sulfo sulfonates. Fatty acid salts, α-sulfofatty acid alkyl ester salts or fatty acid salts are preferred. In particular, a linear alkylbenzene sulfonate having 12 to 14 carbon atoms,
12-18 alkyl sulfates are preferred, alkali metal salts,
Alkanolamine salts are preferred.

Nonionic surfactants include polyoxyalkylene alkyl ether, polyoxyalkylene alkyl phenyl ether, polyoxyalkylene sorbitan fatty acid ester, polyoxyalkylene glycol fatty acid ester, polyoxyethylene polyoxypropylene block polymer, fatty acid alkanolamide, Alkyl polyglycosides are preferred. Particularly, HL obtained by adding 4 to 20 moles of an alkylene oxide to an alcohol having 10 to 18 carbon atoms.
B value (calculated by the Griffin method) of 10.5-15.0, preferably
Polyoxyalkylene alkyl ethers of 11.0 to 14.5 are preferred.

The amphoteric surfactant includes an amino acid type surfactant, an N-acyl amino acid type surfactant and the like, and the cationic surfactant includes a quaternary ammonium salt and the like.

The non-soap surfactant preferably comprises an anionic surfactant and / or a nonionic surfactant as a main surfactant. The non-soap surfactant is incorporated in the liquid detergent composition in an amount of 5 to 60% by weight, preferably 10 to 50% by weight.

As builders, sequestering agents such as citric acid, diglycolic acid, phosphoric acid or salts thereof, alkali agents such as alkali carbonates, alkali metal silicates or alkanoamines, polyethylene glycol, carboxymethylcellulose, acrylic acid, Examples include maleic acid homopolymers and polycarboxylic acid polymers such as copolymers. In the present invention, alkanolamines are preferably blended, and these can improve the liquid stability of the anionic surfactant. The builder is incorporated in the liquid detergent composition in an amount of 0.5 to 20% by weight.

[0020] The liquid detergent composition of the present invention comprises 5 to 90 parts of water.
%, Particularly preferably 20 to 80% by weight.

The liquid detergent composition of the present invention is preferably blended with a fragrance for masking the odor derived from the base and imparting a suitable fragrance after washing the clothes. The fragrance is preferably incorporated in an amount of 0.01 to 2.0% by weight.

Other optional components include enzymes such as proteases, cellulases, lipases and amylases, enzyme stabilizers such as sugars, polysaccharides, boron compounds such as calcium chloride, formic acid and boric acid, and defoamers such as silicone / silica. , Alcohols such as ethanol, benzenesulfonate, p-
Lower alkylbenzene sulfonates such as toluenesulfonic acid, glycols such as propylene glycol and polypropylene glycol, benzoic acid (also effective as a preservative), solubilizing agents such as urea, butylhydroxytoluene, distyrenated cresol, and other fluorescent materials Dyes, bluing agents, antibacterial preservatives, pigments and the like can be mentioned.

The pH of the liquid detergent composition of the present invention is 7 to 1
1, preferably 8-10.

The liquid detergent composition of the present invention can be used as a detergent for clothes, a detergent for dishes, and a detergent for hard surfaces.

[0025]

Examples 1 to 4 and Comparative Examples 1 to 4 The liquid detergent compositions shown in Table 1 were placed in glass (colorless and transparent) storage bottles and sealed. After storage at 50 ° C for 2 weeks, the sample before storage (immediately after preparation) and the sample after storage were analyzed using a colorimeter (ND (F) -300A, manufactured by Nippon Denshoku Industries Co., Ltd.)
The value was measured, and the Δb value was determined by the following equation. Table 1 shows the results. Δb value = (b value of sample after storage) − (b value of sample before storage) If Δb value is less than 1.5, it is possible to obtain a liquid detergent composition having a small change in hue even after long-term storage. it can.

[0026]

[Table 1]

(Note) SDA: N, N-bis (carboxymethyl) serine trisodium salt GDA: N, N-bis (carboxymethyl) glutamic acid tetrasodium salt ASDA: N, N-bis (carboxymethyl) Tetrasodium aspartate ・ AE: Polyoxyethylene dodecyl ether (HLB =
10.2) ES: Polyoxyethylene (average number of moles of EO added: 3) dodecyl ether sulfate sodium salt MEA: Monoethanolamine B: Balance amount to make the whole 100%

 ────────────────────────────────────────────────── ─── Continuing from the front page (72) Inventor Hideji Takata 1334 Minato, Wakayama-shi, Wakayama Prefecture F-term (reference) 4H003 AB03 AB31 AC08 BA12 DA01 DA05 DA17 EB13 EB14 ED02 FA14 FA16 FA28

Claims (4)

[Claims] 1. A composition comprising (a) 0.2 to 5% by weight of a compound represented by the following general formula (I) and (b) 0.01 to 5% by weight of a soap comprising a fatty acid having 8 to 22 carbon atoms. pH 7
Liquid detergent composition which is ~ 11. Embedded image [Wherein, R 1 is a hydrogen atom, a hydroxyl group, or an alkyl group having 1 to 3 carbon atoms. n is 0 to 5, and A is a hydrogen atom, a hydroxyl group or COOM. However, R and A do not simultaneously become hydroxyl groups. M represents a hydrogen atom, an alkali metal, an alkaline earth metal, ammonium or a basic amino group;
M may be the same or different. ] 2. The liquid detergent composition according to claim 1, wherein the component (a) is an N, N-bis (carboxymethyl) serine salt represented by the following general formula (Ia). Embedded image [Wherein, M is the same as in the above general formula (I). ] 3. The liquid detergent composition according to claim 1, wherein the component (a) is N, N-bis (carboxymethyl) glutamate represented by the following general formula (Ib). Embedded image [Wherein, M is the same as in the above general formula (Ia). ] 4. The liquid detergent composition according to claim 1, wherein the component (a) is N, N-bis (carboxymethyl) aspartate represented by the following general formula (Ic). Embedded image [Wherein, M is the same as in the above general formula (Ia). ]