JP2000129288A - Liquid detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a detergent composition which has excellent standing pearly properties and is excellent in the dispersion stability of glycol fatty acid ester pearly particles by incorporating a glycol fatty acid ester and a linear cationic high polymer containing α-1,6'-glucoside linkages in a specified ratio into the same. SOLUTION: This composition contains (A) a glycol fatty acid ester of which the number of carbon atoms of a fatty acid residue is 14 or higher and (B) a linear cationic high polymer containing α-1,6'-glucoside linkages in a wt. ratio of A/B of 30 or lower. A monoester or disester of a 14-22C fatty acid and ethylene glycol is preferable as ingredient A, since it gives an excellent pearly appearance. Preferably, 0.01-20 wt.% (based on the detergent composition) ingredient A is incorporated and dispersed as particles in the composition. Ingredient B is preferably prepared by using dextran or pullulan as the starting material and is incorporated preferably in an amount of 0.01-5 wt.% of the composition.

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 such as a shampoo, a body soap and a kitchen detergent.
More specifically, the present invention relates to a liquid detergent composition provided with a pearl-like appearance by a glycol fatty acid ester.

[0002]

2. Description of the Related Art
In liquid detergent compositions such as shampoos, body soaps and kitchen detergents, the appearance of the liquid has been made pearl-like for the purpose of enhancing the commercial value, and in order to impart such a pearl-like appearance In addition, conventionally, a glycol fatty acid ester is blended and crystallized to form fine particles,
A method of dispersing in a composition has been adopted.

However, in order to achieve a pearl-like appearance, in a liquid detergent composition in which a suitable amount of glycol fatty acid ester is dispersed, the glycol fatty acid ester particles are not allowed to elapse over time when stored for a long time at a high temperature of 40 ° C. or more. Have a tendency to aggregate and separate, resulting in poor dispersion stability. Agglomeration and separation of glycol fatty acid ester particles under such high-temperature storage or long-term storage state cause the user to feel uncomfortable, and there is a problem in quality. Therefore, improvement of this point has been demanded. .

Conventionally, various methods have been proposed to meet this demand, for example, a method of blending a propylene glycol condensate with a glycol fatty acid ester (Japanese Patent Application Laid-Open No. 60-38308), (Japanese Patent Application Laid-Open No. 57-51)
799), a method for improving the fatty acid composition (Japanese Unexamined Patent Publication No.
No. 6-133400) and the like. However, none of these methods is sufficient to stably disperse glycol fatty acid ester particles (pearl particles), and therefore, a technique for improving the dispersion stability and securing the standing pearl property has been established. Was desired.

The present invention solves the above-mentioned problems of the conventional liquid detergent composition, has excellent standing pearl properties,
An object of the present invention is to provide a liquid detergent composition containing glyceryl fatty acid ester as pearl particles, which has excellent dispersion stability of pearl particles.

[0006]

Means for Solving the Problems and Embodiments of the Invention The present inventors have conducted intensive studies to achieve the above object, and as a result, a liquid obtained by blending glycol fatty acid ester particles to give a pearl-like liquid appearance. In the cleaning composition, α-
By blending a linear, unbranched cationic polymer substance having a 1,6′-glucoside bond at a specific blending ratio and using it together with glycol fatty acid ester particles,
Improves the static pearl properties and the dispersion stability of glycol fatty acid ester pearl particles becomes very good, maintains a good dispersion state even in static storage and high temperature storage, and maintains a good pearl-like liquid appearance. The present inventors have found that a liquid detergent composition excellent in feeling of use can be obtained over a long period of time, and have accomplished the present invention.

That is, the present invention relates to (a) a glycol fatty acid ester in which the fatty acid residue has 14 or more carbon atoms;
1,6′-glucosidic bond-containing linear cationic polymer material, and the compounding ratio thereof is (a) / (b) ≦ 30.
(Weight ratio).

Hereinafter, the present invention will be described in more detail.
In the liquid detergent composition of the present invention, a glycol fatty acid ester having a fatty acid residue having 14 or more carbon atoms is used as the dispersoid pearl particles in order to impart pearl luster. Examples of the glycol fatty acid ester include a monoester or diester of a fatty acid having 14 to 22 carbon atoms and ethylene glycol, and a monoester or diester of a fatty acid having 14 to 22 carbon atoms and triethylene glycol. , Ethylene glycol monostearate, ethylene glycol distearate, ethylene glycol palmitate and the like. Among them, monoesters and diesters of a fatty acid having 14 to 22 carbon atoms and ethylene glycol are particularly preferable because they give an excellent pearl-like appearance. In the diester, the fatty acid to be bonded may have either a symmetric structure or an asymmetric structure. In addition, the glycol fatty acid esters can be used alone or in combination of two or more, and the mixing ratio in the case of using a mixture of a monoester and a diester can be appropriately set, for example, ethylene glycol monoester. Stearates and ethylene glycol distearate can also be mixed and used in a 5/5 weight ratio.

In the present invention, the glycol fatty acid ester, which is present in the form of fine particles in the liquid detergent composition, gives the composition a pearly color luster and gloss. Is to add a glycol fatty acid ester to a liquid mixture or an appropriate compound, heat the glycol fatty acid ester to a temperature equal to or higher than the melting point of the glycol fatty acid ester, temporarily dissolve or melt the mixture, and then cool the whole to obtain one of the glycol fatty acid ester fine particles. There is a method of precipitating crystals of about 50 μm.

The amount of the glycol fatty acid ester is 0.01 to 2 parts by weight of the total amount of the liquid detergent composition as the amount of dispersed particles.
0% (% by weight, hereinafter the same), more preferably 0.1 to 1%
0%. Even if the blending amount is further increased, the obtained pearl-like appearance is almost constant, and if it is too small, the composition cannot have a sufficient pearl-like appearance.

In the liquid detergent composition of the present invention containing the above-mentioned glycol fatty acid ester pearl particles, the standing pearl property is improved, and the pearl particles are stably and continuously introduced into the liquid detergent composition system. For the purpose of dispersing and stabilizing the dispersion, a linear, unbranched cationic polymer substance having an α-1,6′-glucoside bond is blended. Here, the cationic polymer substance is α-1,6 ′
Having a glucoside bond at the position, and having a linear structure, that is, not having a branched structure, thereby dramatically improving the dispersion stability of the above-mentioned glycol fatty acid ester particles. The liquid detergent composition can maintain excellent pearl appearance and feeling of use. Therefore, for example, cationized cellulose (Polyguaternium-10), which is a linear cationic polymer having an α-1,4′-glucoside bond,
Even if cationized guar gum or the like which is a cationic polymer substance having a -1,6'-glucoside bond but having a branched structure is not blended, the effect of the excellent dispersion stability intended by the present invention is not exhibited.

As the α-1,6′-glucosidic bond-containing linear cationic high molecular substance of the present invention, those starting from dextran or pullulan are preferably used. Dextran as a starting material includes, for example, dextran and its derivatives represented by the following formula (1).

[0013]

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This polymer substance is prepared by using dextran as a starting material and a cationizing agent such as glycidyl trialkyl ammonium salt or 3-halo-2-hydroxypropyl tri lower alkyl ammonium and a hydroxy lower alkylating agent in any order. It is obtained by reacting. Specific examples include 0- [2-hydroxy-3- (trimethylammonio) propyl] dextran chloride.

Further, as a material using pullulan as a starting material, a material represented by the following formula (3) is exemplified.

[0016]

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As in the case of the above-mentioned dextran, this polymer substance is prepared by using pullulan as a starting material and adding a cationizing agent such as glycidyltrialkylammonium salt or 3-halo-2-hydroxytrialkylammonium halide and a hydroxy lower alkyl. It is obtained by reacting with an agent in any order. Specifically, chloride 0-
[2-hydroxy-3- (trimethylammonio) propyl] pullulan and the like.

The above alkyl groups R ₂ , R ₃ ,
R ₄ , R ₆ , R ₇ and R _{8 each} have 1 to 18 carbon atoms, particularly 1 to 18 carbon atoms.
A value of 3 is preferred.

The α-1,6′-glucosidic bond-containing linear cationic high molecular substance of the present invention can be used alone or in combination of two or more as appropriate. It is 0.01-5% of the whole agent composition, More preferably, it is 0.05-2%. If the amount is too large, the polymer substance may not be stably dispersed or solubilized in the composition, and if the amount is too small, the dispersion stability of the glycol fatty acid ester may decrease.

In the present invention, the blending ratio of the above two components is such that glycol fatty acid ester / α-1,6′-glucoside bond-containing linear cationic polymer substance ≦ 30 (weight ratio), preferably 0.002 -30, more preferably 0.05-30. This ratio is 30
If the ratio exceeds the above, the dispersion stability of the glycol fatty acid ester may decrease, and the pearl appearance may not be able to be maintained well.

The liquid detergent composition of the present invention can be prepared and applied as a body soap, a liquid hand soap, a liquid facial cleanser, a hair shampoo, a kitchen detergent, etc. In the purpose of use of the product, other components according to the use form and intended performance, for example, anionic surfactants, amphoteric surfactants, nonionic surfactants, surfactants such as cationic surfactants,
Thickeners, thickeners, oils, solvents, preservatives, dandruff, bactericides, antioxidants, tonics, coloring agents, fragrances, ultraviolet absorbers, high molecular compounds such as silicone derivatives, hydrotropes, wetting Agents, pH adjusters and the like can be blended within a range that does not impair the effects of the present invention. In addition, other pearling agents, a cationic polymer substance other than the above-described cationic polymer substance, a nonionic polymer substance, an amphoteric polymer substance, and the like can be blended as long as there is no problem.

The method for producing the liquid detergent composition of the present invention is not particularly limited. For example, after all (or a part) of the components except for the glycol fatty acid ester are mixed and heated, the glycol fatty acid ester is added. Once melted and then cooled, the composition is cooled to precipitate glycol fatty acid ester fine particles, or a method in which glycol fatty acid ester is heated in advance in a suitable compound and then cooled to precipitate fine particles. A pearl premix is prepared in advance, and the pearl premix is added to a mixed solution composed of other components and stirred to produce a pearl premix. Here, compounds used for producing the pearl premix include various surfactants and the α-1,6′- of the present invention.
A high molecular compound such as a linear cationic high molecular substance containing a glucoside bond is preferably used. In the above-mentioned production method, the mixing order, addition position, addition method, temperature condition and the like of each component may be appropriately set, and finally the glycol fatty acid ester fine particles and the α-1,6′-glucoside bond-containing linear What is necessary is just to be in the form which coexists with the cationic polymer substance.

[0023]

EXAMPLES The present invention will be described below in detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

[Examples 1 to 11 and Comparative Examples 1 to 3] Each component was mixed in the composition shown in Tables 1 and 2 and heated (80 ° C.) with stirring. This was dissolved, and then the entire composition was cooled to precipitate glycol fatty acid ester fine particles, thereby producing a liquid detergent composition. In addition, the compounding quantity of each component in a table | surface is all weight%, and each symbol shows the following components.

A-1: Sodium polyoxyethylene alkyl ether sulfate (average number of moles of added EO: 3) (trade name: SANNOL DL1430, manufactured by Lion Corporation) A-2: Sodium polyoxyethylene lauryl ether acetate (average EO added) Number of moles: 3) (trade name Enazicol EC-30, manufactured by Lion Corporation) A-3: N-lauroyl-N-methyl-β-alanine sodium (brand name Enazicol L-30AN, manufactured by Lion Corporation) B -1: Amidopropyl betaine laurate (trade name)
B-2: 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine (trade name: Enazicol C-40H, manufactured by Lion Corporation) B-3: Enazicol L-30B, manufactured by Lion Corporation Lauryl dimethylamine oxide (trade name Aromox DM12D-W, manufactured by Lion Corporation) B-4: lauryl aminopropionic acid (trade name Levon APL, manufactured by Sanyo Chemical Industry Co., Ltd.) C-1: coconut oil fatty acid diethanolamide ( Brand name Home Lead CD, manufactured by Lion Corporation) C-2: Polyoxyethylene dioleic acid methyl glucoside (average number of moles of added EO: 120) (brand name: glucamate DOE-120, manufactured by Amacol Corporation) D-1 : Ethylene glycol distearate D-2: Ethylene glycol difatty acid ester dispersion (25% solution) (trade name Aruporu PA, manufactured by Lion (Ltd.)) E-1: cationic cellulose (trade name Reogado G
E-2: 0- [2-hydroxy-3- (trimethylammonio) propyl] guagum E-3: 0- [2-hydroxy-3- (trimethylammonio) propyl chloride E-4: 0- [2-hydroxy-3- (trimethylammonio) propyl] dextran chloride (raw material dextran molecular weight about 100,000, nitrogen content) E-5: 0- [2-hydroxy-3- (trimethylammonio) propyl] dextran chloride (raw material dextran molecular weight: about 1,000,000, nitrogen content: about 2.5%) E-6: 0 chloride -[2-Hydroxy-3- (trimethylammonio) propyl] pullulane (raw material pullulan molecular weight: about 200,000, nitrogen content: about 2.6%) E-7: 0- [2-HCl Proxy-3- (trimethylammonio) propyl] Pullulan (raw pullulan molecular weight of about 200,000, about 1.5% nitrogen content)

The following evaluation was performed on the obtained liquid detergent composition. (1) Pearl appearance properties (static pearl properties) Put the obtained liquid detergent composition into a transparent glass bottle,
A sample that had been allowed to stand at 5 ° C. for one month and a control sample of the liquid detergent composition immediately after the preparation were prepared, and both were visually observed under a box-shaped solar lamp. The sample after standing was evaluated according to the following criteria. ：: Shows the same pearl luster as the control sample. Δ: Pearl gloss slightly inferior to control sample. X: Pearlescent luster was considerably inferior to the control sample. (2) Dispersion Stability of Pearl Particles The obtained liquid detergent composition was filled in a transparent plastic container, and left standing at 45 ° C. and room temperature for 3 months, respectively. Evaluation was based on criteria. ：: No shark skin, scum, or separation was observed. ：: Either shark skin or soot is observed, but no separation is observed. Δ: Both shark skin and soot are observed, but no separation is observed. ×: Separation (3) Centrifugation resistance The obtained liquid detergent composition was put into a centrifuge tube, and 10,000
Centrifugation was performed at × g for 30 minutes. After completion of the centrifugation, the centrifuge tube was taken out gently, the appearance was visually observed, and evaluated according to the following criteria. A: No separation is observed. ：: Very slight separation is observed. Δ: Separation was slightly observed. X: Separation is remarkably observed.

[0027]

[Table 1] * Citric acid monohydrate or sodium hydroxide

[0028]

[Table 2] * Citric acid monohydrate or sodium hydroxide

[0029]

As is clear from Tables 1 and 2, the liquid detergent composition of the present invention comprises a glycol fatty acid ester and an α-1,6′-glucoside bond-containing linear cationic polymer. As a result, the glycol fatty acid ester particles can be maintained in a well-dispersed state, and the pearl appearance can be maintained well, even after the composition has been stored for a long period of time and stored at a high temperature. can do.

Claims (1)

[Claims] 1. A composition comprising (a) a glycol fatty acid ester having a fatty acid residue having 14 or more carbon atoms and (b) a linear cationic polymer material containing an α-1,6′-glucoside bond. A liquid detergent composition having a ratio of (a) / (b) ≦ 30 (weight ratio).