JPH10204493A - Detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the subject composition excellent in foaming properties, stability with time, handleability of aqueous solution and low in skin irritation by formulating a specific amide ether carboxylic acid (salt) with an alkanolamide, a higher fatty acid (salt) and a hydroxy acid (salt). SOLUTION: This composition is obtained by formulating (A) 70-97wt.% of a compound of formula I [R<1> is a 6-24C higher fatty acid residue; R<2> is H or a 1-4C alkyl; A is a 2-4C alkylene; M is H, an alkaline (earth) metal ion, an ammonium cation, a lower alkanolamine cation or a basic amino acid cation; (n) is 0-20] with (B) 2.5-15wt.% of a compound of formula II, (C) 0.1-10wt.% of a compound of the formula R<1> COOM and (D) 0.005-5wt.% of a hydroxy acid (salt). The composition is preferably used for a skin detergent, a hair detergent, a dish washing detergent, a detergent for clothing, etc.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an amide ether carboxylate type hypoallergenic detergent composition which is excellent in foaming property and stability over time at low and high temperatures.

[0002]

2. Description of the Related Art Japanese Unexamined Patent Publication (Kokai) No. 1-211521 discloses a conventional shampoo, body shampoo and the like using an amide ether carboxylate.

[0003]

However, the amide ether carboxylate conventionally used has not been sufficient as a cleaning agent due to the following problems. Foaming properties, especially when the pH is 8 or less, rapidly deteriorated, and there was a problem in use in a weakly acidic to neutral range. When left at a low temperature (5 ° C. or less) for a long time, appearance will be blurred, while when left at a high temperature (about 50 ° C.) for a long time, coloring and odor deterioration will occur. When used as an aqueous solution, the viscosity of the aqueous solution is increased in the range of 5 to 50% by weight, and the handleability is poor.

[0004]

SUMMARY OF THE INVENTION The present inventors have improved foaming properties (especially foaming properties from weakly acidic to neutral), aging at low and high temperatures, and improved handling of aqueous solutions. As a result of intensive studies to obtain an amide ether carboxylate type mild cleaning agent, the present invention has been achieved.

That is, the present invention provides a compound represented by the general formula (Wherein, R ¹ is a higher fatty acid residue having 6 to 24 carbon atoms, R ² is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A is an alkylene group having 2 to 4 carbon atoms, and n is 0 to 20 An integer, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion,
Represents an ammonium cation, a lower alkanolamine cation or a basic amino acid cation. Amide ether carboxylate (A) represented by the formula: (Wherein R ¹ , R ² , A, and n are the same as those in the general formula (1)). 2.5 to 15% by weight of a polyoxyalkylene higher fatty acid alkanolamide (B) represented by the general formula R ¹ COOM (3) (wherein R ¹ and M are the same as those in the general formula (1)) 0.1 to 10% by weight of the higher fatty acid salt (C), and oxyacid and / or 0.005 to salt (D)
A cleaning composition comprising 5% by weight (hereinafter referred to as an amide ether carboxylate according to the present invention).

In the general formulas (1), (2) and (3), the higher fatty acid residue having 6 to 24 carbon atoms represented by R ¹ includes caproic acid residue, enanthic acid residue and caprylic acid residue. , Pelargonic acid residue, capric acid residue, undecylic acid residue, lauric acid residue, tridecylic acid residue, myristic acid residue, pentadecylic acid residue, palmitic acid residue, margaric acid residue, stearic acid residue , Nonadecyl acid residue, behenic acid residue, oleic acid residue, renoleic acid residue, renolenic acid residue and the like. Further, a coconut oil fatty acid residue, a palm oil fatty acid residue,
Tallow fatty acid residues can also be used. Preferred are capric acid residue, lauric acid residue, myristic acid residue, coconut oil fatty acid residue and palm oil fatty acid residue. R
Examples of the alkyl group having ² to 1 to 4 carbon atoms include a methyl group, an ethyl group, a propyl group, and a butyl group. R ² is preferably a hydrogen atom and a methyl group. Examples of the alkylene group having 2 to 4 carbon atoms represented by A include an ethylene group, a propylene group, and a 1,2- or 1,4-butylene group. In the general formulas (1) and (2),
(AO) _n is an alkylene oxide having 2 to 4 carbon atoms, n
It indicates that moles are added. The alkylene oxide may be used in combination of two or more (random addition or block addition). Preferably, it is ethylene oxide.
N is an integer of 0 to 20, preferably 0 to 1;
It is an integer of 0.

A hydrogen atom represented by M, an alkali metal ion, an alkaline earth metal ion, an ammonium cation,
Among the lower alkanolamine cations or basic amino acid cations, alkali metal ions include ions such as lithium, potassium, and sodium; alkaline earth metal ions include ions such as calcium and magnesium; and lower alkanolamine cations include Cations such as triethanolamine, diethanolamine, and monoethanolamine; and basic amino acid cations include cations such as lysine and arginine. Preferably, an alkali metal ion,
Particularly preferred are potassium ion and sodium ion.

[0008] The oxyacid and / or its salt means a compound having a carboxyl group and a hydroxyl group in the molecule. Oxy acids and / or salts thereof that can be used include glycolic acid and / or salts thereof, lactic acid and / or salts thereof, malic acid and / or salts thereof, tartaric acid and / or salts thereof, citric acid and / or salts thereof, and the like. Is mentioned. These can be used alone or as a mixture of two or more. Of these, glycolic acid and / or a salt thereof, and citric acid and / or a salt thereof are preferred. As the salt, a salt similar to M in the general formula (1) (expressed as an ion in the general formula (1)) can be used. Preferred are alkali metal salts, particularly preferred are potassium and sodium salts.

In the present invention, the content of the compound (A) represented by the general formula (1) is 70 to 97% by weight. Preferably, it is 80 to 93% by weight. If the amount is less than 70% by weight, the foaming property is reduced. It need not contain more than 97% by weight. The content of the compound (B) represented by the general formula (2) is 2.5 to 15% by weight, preferably 5 to 10%.
% By weight. When the content is more than 15% by weight, the foaming property sharply decreases, the stability at low temperatures deteriorates, the viscosity of the aqueous solution sharply increases, and the skin irritation increases. If it is less than 2.5%, the foam quality is not creamy and the usability is poor. The content of the compound (C) represented by the general formula (3) is
It is 0.1 to 10% by weight, preferably 0.5 to 5% by weight. When contained in an amount of more than 10% by weight, foaming properties,
In particular, the foaming property in a weakly acidic to neutral region having a pH of 8 or less sharply decreases. The content of the oxyacid and / or its salt (compound (D)) is 0.005 to 5% by weight, preferably 2 to 4% by weight. If the amount is less than 0.005% by weight, coloring and odor deterioration will occur when stored at a high temperature (50 ° C.) for a long time, and the viscosity of the aqueous solution will sharply increase. If the content is more than 5% by weight, the foam quality becomes poor.

These contents are expressed in terms of the weight percent of each compound relative to the total weight of compounds (A) to (D).
It was expressed by.

An example of the amide ether carboxylate according to the present invention is shown in Table 1.

[0012]

[Table 1]

Explanation of symbols LA; lauric acid residue CO; coconut oil fatty acid residue TD; tridecylic acid residue MY; myristic acid residue ST; stearic acid residue H; hydrogen atom M; methyl group E; ethylene group P Propylene group EP; Ethylene group / propylene group = 50% / 50% random mixed group NA; Sodium K; Potassium MG; Magnesium TEA; Triethanolamine cation CN; Sodium citrate CT; Triethanolamine citrate CK; Potassium phosphate GN; Sodium glycolate MN; Sodium malate LM; Magnesium lactate

The method for producing the polyoxyalkylene higher fatty acid alkanolamide represented by the general formula (2) is not particularly limited, but it can be usually produced by amidating a higher fatty acid with an alkanolamine and then adding an alkylene oxide. . The method for producing the amide ether carboxylate represented by the general formula (1) is not particularly limited, but usually, the polyoxyalkylene higher fatty acid alkanolamide represented by the general formula (2) is converted to a monohaloacetic acid or a salt thereof with an alkali. It can be produced by carboxymethylation in the presence.

The amount of the amide ether carboxylate according to the present invention in the detergent composition of the present invention is not particularly limited, but is preferably 5 to 50% by weight. The pH of the detergent composition is not particularly limited, but is preferably neutral to weakly acidic from the viewpoint of safety for the human body. Although the use of the cleaning composition of the present invention is not particularly limited, a body shampoo,
It is useful as a skin cleanser such as a facial cleanser, a hair cleanser such as a shampoo, a dishwashing detergent, and a household detergent such as a clothing detergent.

The detergent composition of the present invention may contain an anionic surfactant, a nonionic surfactant, a cationic surfactant, or an amphoteric surfactant in an amount that does not impair the effects of the present invention.

Examples of anionic surfactants include sodium lauryl sulfate, sodium polyoxyethylene lauryl sulfate, triethanolamine polyoxyethylene lauryl sulfate, sodium polyoxyethylene lauryl ether acetate, sodium polyoxyethylene coconut fatty acid monoethanolamide sulfate, Disodium polyoxyethylene lauryl sulfosuccinate, disodium polyoxyethylene lauroyl ethanolamide sulfosuccinate,
Sodium coconut oil methyltaurine, magnesium coconut fatty acid methyltaurine, sodium coconut fatty acid sarcosine, coconut fatty acid sarcosine triethanolamine, N-coconut fatty acid acyl-L-glutamate, N-coconut fatty acid acyl-L-glutamic acid Triethanolamine, sodium lauroylmethyl-β-alanine, N-lauroyl-N-methyl-β-alaninetriethanolamine, sodium lauryl phosphate and the like can be mentioned. The compounding amount is 5 to 5 with respect to the composition.
0% by weight.

The amphoteric surfactants include coconut oil fatty acid amidopropyldimethylaminoacetate betaine, lauryldimethylaminoacetate betaine, 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, laurylhydroxysulfobetaine, lauroyl Examples include sodium amidoethyl hydroxyethylcarboxymethylbetaine hydroxypropyl phosphate and sodium β-laurylaminopropionate. The amount is 5 to 50% by weight based on the composition.

Examples of the nonionic surfactant include 1: 1 coconut oil fatty acid diethanolamide, lauryl dimethylamine oxide, glyceryl monostearate, ethylene glycol monostearate, polyethylene glycol monostearate, polyethylene glycol distearate, and monolauric acid. Sorbitan, polyoxyethylene sorbitan monolaurate, polyoxyethylene dioleate methyl glucoside, polyoxyethylene tallow alkyl hydroxy myristylene ether, ethylene glycol monostearate, ethylene glycol distearate
And the like. The compounding amount is 1 to the composition.
３０30% by weight.

Examples of the cationic surfactant include stearyltrimethylammonium chloride, behenyltrimethylammonium chloride, distearyldimethylammonium chloride, aminopropylethyldimethylammonium ethyl lanolin sulfate fatty acid, and lactate of diethylaminoethylethylamide stearate. As the compounding amount,
It is 0.1 to 5% by weight based on the composition.

Further, as humectants, such as glycerin and sodium pyrrolidonecarboxylate, and as high molecular compounds,
Cationized cellulose, cationized guar gum, polyethylene glycol, sodium polyacrylate, hydroxyethylcellulose, protein derivatives, etc., as silicone, dimethylpolysiloxane, modified silicone in which various organic groups are introduced into a part of the methyl group of dimethylpolysiloxane, Cyclic dimethyl siloxane, chelating agents such as sodium ethylenediaminetetraacetate, sodium 1-hydroxyethane-1,1-diphosphonate, etc., lower alcohols such as ethanol, propylene glycol, dipropylene glycol, fragrances, coloring agents, preservatives , An ultraviolet absorber, water and the like can also be used in combination.

The form of the composition of the present invention is not particularly limited, such as a liquid, a paste, a solid, and a powder, but a liquid and a paste are preferable because they are easy to use. In the case of liquid and paste shampoo compositions, the amide ether carboxylate according to the present invention usually has 5 to 30% by weight and the total amount of surfactants is 5 to 50% by weight, preferably 10 to 10% by weight.
30% by weight, 0 to 5% of polymer compound and silicon
% By weight, 0 to 10% by weight of a humectant, a chelating agent and a lower alcohol, and 35 to 95% by weight of water.

[0023]

EXAMPLES Hereinafter, the present invention will be further described with reference to Examples, but the present invention is not limited thereto. Examples 1 to 20 and Comparative Examples 1 to 7 The amide ether carboxylate according to the present invention described in Table 1 and the amide ether carboxylate described in Table 2 were prepared in Table 3
To 8 (parts by weight) and water (remainder)
To make a total of 100 parts, thereby preparing the cleaning composition of the present invention and the cleaning composition of the comparative example. The foaming property, the aging stability at low and high temperatures, the viscosity of the aqueous solution, Sex and skin irritation were tested. Tables 3 to 8 show the results.
Shown in

Surfactants used in Examples and Comparative Examples,
Other additives and test methods are as follows. Activator A; Polyoxyethylene (2 mol) sodium lauryl sulfate Activator B; Polyoxyethylene (4 mol) triethanolamine lauryl sulfate Activator C; Polyoxyethylene (3 mol) sodium lauryl ether acetate Activator D; Poly Oxyethylene (3 mol) coconut oil fatty acid sodium monoethanolamide sulfate activator E; polyoxyethylene (2 mol) lauryl sulfosuccinate disodium activator F; polyoxyethylene sulfosuccinate (5 mol) lauroyl ethanolamide disodium activator G: coconut oil fatty acid methyltaurine sodium activator H; coconut oil fatty acid sarcosine sodium activator I; N-coconut oil fatty acid acyl-L-sodium glutamate activator J; lauroylmethyl-β-alanine sodium activator K: coconut oil Amidopropyldimethylaminoacetate betaine activator L; lauryldimethylaminoacetate betaine activator M; 2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine activator N; laurylhydroxysulfobetaine activator O; 1 1 type coconut oil fatty acid diethanolamide activator P; lauryl dimethylamine oxide activator Q; ethylene glycol monostearate activator R; polyoxyethylene (120 mol) methyl gluconate dioleate activator S; stearyltrimethylammonium chloride activator T; lanolin ethyl sulfate fatty acid aminopropylethyl dimethyl ammonium

Humectant A; Glycerin Humectant B; Sodium pyrrolidonecarboxylate Polymer A; Cationic cellulose Polymer B; Cationic guar gum Polymer C; Polyethylene glycol 1500 Polymer D; Dimethylpolysiloxane Polymer E; Protein ink rate A; Sodium ethylenediaminetetraacetate chelate B; 1-hydroxyethane-1,1-diphosphonic acid sodium alcohol A; Propylene glycol alcohol B; Dipropylene glycol

Test Method <Foamability> 200 ml of a 0.3% (effective) aqueous solution of a detergent composition was prepared using 15 ppm of hard water in terms of CaO, and stirred for 30 seconds with a juicer mixer (MX-390GX manufactured by Toshiba). The foaming property was evaluated based on the foam height (mm) at that time. <Stability over time; appearance> The detergent composition was placed in a 100 ml glass bottle, left in a thermostat at 0 ° C., 25 ° C., and 50 ° C. for 30 days. It was compared with the appearance and evaluated according to the following criteria. Evaluation criteria ；: no change △: slight turbidity / slight separation tendency ×: remarkable turbidity / separation <Stability over time; hue> Put the detergent composition in a 100 ml glass bottle, 0 ° C, 25 ° C And after leaving in a 50 ° C. thermostat for 30 days, visually observe the degree of coloring,
The degree of coloring immediately after the preparation was compared with the degree of coloring, and evaluated according to the following criteria. Evaluation criteria ○: no coloring △: slightly colored ×: markedly colored <day stability; odor> The detergent composition was placed in a 100 ml glass bottle and placed in a thermostat at 0 ° C, 25 ° C and 50 ° C for 30 days. After standing, perform a sensory test for the degree of odor,
It was compared with the odor immediately after the preparation and evaluated according to the following criteria. Evaluation criteria ○: no change △: slight odor ×: marked odor

<Viscosity of Detergent Composition> The viscosity of the detergent composition was measured at 25 ° C. using a BL type viscometer. <Usability> The usability was evaluated by shampooing a panel of 10 men and women using the cleaning composition shown in Table 3, and evaluating the “foaming”, “foaming quality” and “feel” during use according to the following criteria. did. Evaluation criteria "foaming" and "texture"○; good △; normal ×; poor “foam quality” ○; creamy △; normal ×; rough

<Skin irritation> 1.0 of the composition shown in Table 3
% (Effective) aqueous solution was adjusted, and a human patch test (closed, 48 hours, inside the upper arm) was performed by five men and women, and evaluated based on the following criteria and expressed as a total score. Evaluation criteria 0; no reaction (erythema) 1: very mild erythema 2; clear erythema 3; strong erythema

[0029]

[Table 2]

[0030]

[Table 3]

[0031]

[Table 4]

[0032]

[Table 5]

[0033]

[Table 6]

[0034]

[Table 7]

[0035]

[Table 8]

From these results, it can be seen that the cleaning composition of the present invention
It can be seen that good foaming properties in a neutral to weakly acidic pH range, good day-to-day stability at low and high temperatures, ease of use in aqueous solutions, usability, and safety for humans are good.

[0037]

The amide ether carboxylate conventionally used has a foaming property in a neutral to weakly acidic pH range,
There was a problem in the long-term stability at low and high temperatures and the handling of aqueous solutions. However, the composition of the present invention can not only solve these problems but also provide a cleaning composition satisfying human safety.

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI C07C 233/20 C07C 233/20

Claims (1)

[Claims] 1. The general formula (Wherein, R ¹ is a higher fatty acid residue having 6 to 24 carbon atoms, R ² is a hydrogen atom or an alkyl group having 1 to 4 carbon atoms, A is an alkylene group having 2 to 4 carbon atoms, and n is 0 to 20 An integer, M is a hydrogen atom, an alkali metal ion, an alkaline earth metal ion,
Represents an ammonium cation, a lower alkanolamine cation or a basic amino acid cation. Amide ether carboxylate (A) represented by the formula: (Wherein R ¹ , R ² , A, and n are the same as those in the general formula (1)). 2.5 to 15% by weight of a polyoxyalkylene higher fatty acid alkanolamide (B) represented by the general formula R ¹ COOM (3) (wherein R ¹ and M are the same as those in the general formula (1)) 0.1 to 10% by weight of the higher fatty acid salt (C), and oxyacid and / or 0.005 to salt (D)
A cleaning composition comprising 5% by weight.