JPH03172397A - Cleanser composition - Google Patents

Abstract

PURPOSE:To provide a cleanser composition reduced in the irritation thereof to skins and hairs and having excellent foamability by compounding a mixture of alpha-, beta- and gamma-cyclodextrins. CONSTITUTION:The objective composition is compounded with a mixture of preferably (A) 50-80wt.% of alpha-dextrin, (B) 15-45wt.% of beta-dextrin and (C) 5-20wt.% of gamma-dextrin. The composition is employed as a kitchen cleanser, detergent for clothes, cleanser for households, etc., and may be compounded with components such as a surfactant in response to the kind of the composition.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a detergent composition containing a mixture of α-1β- and γ-cyclodextrin to suppress irritation to the skin.

Conventional technology and its challenges Conventional household cleaning compositions such as kitchen detergents have
Products containing β-cyclodextrin to suppress skin irritation are known (see Japanese Patent No. 1402779 and Japanese Patent Application Laid-Open No. 62-267218). however,
β-Cyclodextrin has low solubility in detergents (and its irritation-alleviating effect was not sufficient). It has also been proposed to use methylated cyclodextrin in detergents (Japanese Patent Application Laid-Open No. 1983-1989-1). No. 62897) is very expensive because it involves chemical modification.

The inventors of the present invention have repeatedly investigated these problems and found that a mixture of α, β, and γ-dextrins (mixed dextrin) can be dissolved in a cleaning agent at a higher concentration than β-dextrin alone. The present invention was completed based on this knowledge.

Means for Solving the Problems The present invention provides a cleaning composition characterized in that it contains α-1β- and γ-cyclodextrin.

The mixed cyclodextrin used in the present invention is 6-
It is a non-reducing maltooligosaccharide in which eight glucose molecules are connected in a ring through α-1,4-glucosidic bonds, and it is a cyclodextrin-forming enzyme (Cy) produced by microorganisms of the genus Bacillus.
cloamylosGlucanotransfera
se) on starch. The mixed cyclodextrin includes 50 to 80% by weight of α-cyclodextrin and 15 to 45% by weight of β-cyclodextrin.
Particularly preferred are those containing 5 to 20% by weight of γ-cyclodextrin. Such a mixed dextrin has significantly higher solubility in detergents than conventionally commonly used β-cyclodextrin, and the irritation of detergents to the skin is greatly suppressed. If the blending ratio of α-1β-1γ-dextrins in the mixed cyclodextrin is outside the above range, the solubility in detergents will be low and the effect of suppressing skin irritation will be reduced.

FIG. 1 shows the results of examining the solubility of cyclodextrin used in the present invention in water. As is clear from Figure 1, α-cyclodextrin (α-CD), β-cyclodextrin (β-CD), and γ-cyclodextrin (γ-CD)
The solubility of each cyclodextrin alone was higher than that of mixed dextrin (mixed CD: α: 60%, β: 30%, 1710
%) solubility is much higher.

β-cyclodextrin has low water solubility, and although benzene rings are stably included, it is unstable when fatty acids are included. However, by combining α, β, and γ-cyclodextrins, the solubility is synergistically improved compared to when they are used alone, and as a result, it is now possible to include a wider range of stimulants. It is estimated that the stimulus suppression effect was significantly improved.

The detergent composition of the present invention is used as a kitchen detergent, a laundry detergent, a household detergent, etc., and surfactants and other components are added depending on the type of the detergent composition.

For example, anionic surfactants such as sulfate ester salts, alkylaryl sulfonates, acyl methyl sulfonates, α-olefin sulfonates, alkanesulfonates, acylamino acid salts, alkyl sulfosuccinates, and alkyl ether carboxylates. : Sitasaccharide fatty acid ester, alkanolamide, polyoxyethylene alkylamine,
Polyoxyethylene fatty acid amide, alkyl ether activator, alkyl allyl ether activator, polyoxyethylene fatty acid ester, phenyl ether activator,
Nonionic surfactants such as polyoxyalkylene polymers and tetronic type surfactants; Cationic surfactants such as mono-long chain alkyl trimethyl ammonium salts and di-long chain alkyl dimethyl ammonium salts; imidacillin surfactants,
Amphoteric surfactants such as monoalkyl dimethyl acetate betaine, monoalkylamidopropyl dimethyl acetate betaine;
Amine oxide type surfactants, higher fatty acids such as palmitic acid, myristic acid, oleic acid, stearic acid, behenic acid, coconut oil fatty acid, beef tallow fatty acid; silicone derivatives; protein hydrolysates, cationized water-soluble polymers,
Nonionic water-soluble polymers such as polyvinylpyrrolidone and its derivatives and cellulose derivatives, anionic water-soluble polymers such as methyl vinyl ether butyl maleate copolymer and xanthan gum, and amphoteric water-soluble polymers such as acrylic acid methacrylate copolymer. Polymers such as polymers;
UV absorbers such as oxybenzone, cinnamic acid ester derivatives; tripolyphosphate, metaphosphate, pyrophosphate,
Builders such as orthophosphates, silicates, zeolites, carbonates, sulfates, perborate; polyhydric alcohols such as propylene glycol, 13-butylene glycol, sorbitol, polypropylene glycol, glycerin; ethanol, isopropanol , alcohols such as methanol; propellants such as fluorocarbons, LPG, and DME; other pH 11] regulators, humectants, fragrances, chelating agents, pigments, animal and plant extracts, cooling agents, bactericidal agents, preservatives, and antioxidants. Known optional components such as antistatic agents, antistatic agents, brighteners, and enzymes can be appropriately blended.

The cleaning composition of the present invention can be made into a conventional form such as a kitchen detergent, a laundry detergent, a household detergent, etc. by a conventional method.

[Examples] Next, the present invention will be described in more detail based on Examples and Comparative Examples. The cleaning compositions obtained in Examples and Comparative Examples were evaluated by the following method.

(Transparency) After being left in a constant temperature room at 5° C. for one week, the appearance was visually checked and the presence or absence of precipitation and cloudiness was observed.

(Skin irritation) A 5% aqueous solution of the test detergent was applied to the upper arms of 30 healthy people for 2 hours.
A 4-hour closed patch test was performed. After removing the test solution 1
The condition of the skin over time was evaluated using a magnifying glass, and those with a clear reaction were considered positive. If 5 or more out of 30 people tested positive, it was considered poor, and if less than 5 people tested positive, it was considered good.

Example 1 (dish detergent) A kitchen detergent was prepared according to the following recipe according to a conventional method.

Sodium sulfate coconut oil fatty acid jetanolamide mixed cyclodextrin (α: 60%, β: 30%, γ: 10%) Flavored water Example 2 (dish detergent) Sodium ether sulfate (B, 0.3 mol) Secondary Sodium alkanesulfonate Coconut oil fatty acid jetanolamide mixed cyclodextrin (α: 60%, β: 30%, γ: 10%) Perfumery Example 3 (Dish detergent) Mess-1111 α-olefin sulfonic acid Sodium lauryl dimethylamine oxide 5.0 0.4 0.2 Remainder 5.0 5.0 0.5 0.2 Remainder weight% 10.0 5.0 Coconut oil fatty acid jetanolamide 5.0 Mixed cyclodextrin (α : 80%, β: 15%, γ: 5%) 0.2 Fragrance 0.2 Water remainder Example 4 (dish detergent) Bottom - 1111 Coconut oil fatty acid amidoprobyl dimethylaminoacetic acid betaine Weight % 5 .0 Sodium polyoxyethylene lauryl ether sulfate (E, 0.3 mol) lOoo Lauric acid-myristic acid monoethanolamide 5.0 Mixed cyclodextrin (α: 50%, β: 30%, 7220%) 0.1 Flavor 0.2 Water Remaining Example 5 (Clothing Detergent) A laundry detergent was prepared according to a conventional method using the following formulation.

Ingredients Coconut oil fatty acid sodium polyoxyethylene (E, 0.7 mol) Alkyl (C+
s C+s) Ether Monoisopropanolamine Methyl Alcohol Coconut Oil Fatty Acid Jetanolamide Hydroxyethane Diphosphonic Acid Mixed Cyclodextrin (α: 60%, β: 30%, γ: Perfume Water Implementation - Example 6 (Laundry Detergent) Alkyl (C1o C14) Ether LAS Jetanolamine Salt Coconut Oil Fatty Acid Jetanolamide Alkaline Phosphatase Lipase 10%) Weight % 13.0 22.0 3.0 IOlo 2.0 0.2 0.2 0.1 Balance 60.0 21. 0 0.3 0.2 Hard water (100ppI11) Balance mixed cyclodextrin 0.5 (
α: 60%, β: 30%, 7710%) Fragrance 0.2 Example 7 (Carpet Shampoo) A carpet shampoo was prepared according to a conventional method using the following formulation. It should be diluted 40 times before use.

Ingredients Weight%
Sodium lauryl sulfate 6.0 Magnesium lauryl sulfate 6.0 Sodium lauroyl sarcosine 1000 Mixed cyclodextrin 0.1 (α: 6
0%, β: 30%, 7710%) Antistatic agent
Trace fragrance 0
．． 05 Water Remaining Comparative Examples 1 to 3 Each of the mixed cyclodextrins in Example 2 was α-1
A kitchen detergent was prepared with the same composition except that the composition was changed to 100% β-1γ-cyclodextrin. When evaluated using the above evaluation method, it became cloudy when left at -5°C.
A precipitate was formed, and the evaluation of skin irritation was also poor.

[Effects of the Invention] The cleaning composition of the present invention is less irritating to the skin and hair, and has excellent foaming power.

[Brief explanation of the drawing]

FIG. 1 is a graph showing the solubility of cyclodextrin.

Claims (2)

[Claims] (1) A cleaning composition characterized by containing α-, β-, and γ-cyclodextrin. (2) α-cyclodextrin 50-80% by weight, β-
The cleaning composition according to claim 1, which contains 15 to 45% by weight of cyclodextrin and 5 to 20% by weight of γ-cyclodextrin.