JPH0684510B2 - Cleaning composition - Google Patents

Description

TECHNICAL FIELD The present invention relates to a detergent composition. More specifically, it relates to a detergent composition which is less irritating to the skin and is excellent in detergency and foaming power.

The detergent composition of the present invention has versatile uses, but is particularly advantageous when used as a shampoo composition.

[Conventional technology]

Conventionally, detergent compositions include anionic surfactants such as alkyl sulfate ester salts and alpha-olefin sulfonates, nonionic surfactants such as fatty acid alkylolamides, and amphoteric ions such as alkyl betaines and alkyl amine oxides. Surfactants have been used.

[Problems to be solved by the invention]

In the case of anionic surfactants, these surfactants alone have strong detergency and foaming power, but they have strong irritation to the skin, and nonionic surfactants In the case of agents and zwitterionic surfactants, they are surfactants that are less irritating to the skin, but their detergency and foaming power are insufficient for terribly oily soil.

The present inventors have focused their attention on the above points, and as a result of earnest studies, as a result, a surfactant having a strong protein denaturing power or a surfactant composition has a strong skin irritation and a small protein denaturing power. It has been found that the skin irritation is significantly reduced in the case of the surfactant composition.

When a specific anionic surfactant and a specific nonionic surfactant are combined, the protein denaturation rate is synergistically reduced and the skin irritation is significantly reduced as compared with the case where each is used alone. I found it. The present invention is based on this finding.

[Means for solving problems]

That is, the present invention has the general formula (Wherein R ₁ represents an alkyl group or an alkenyl group having an average carbon number of 7 to 19, R ₂ represents a lower alkyl group having an average carbon number of 1 to 3, and M represents an alkali metal or an organic amine). The present invention provides a detergent composition comprising an alkyloylalkyl taurine salt type anionic surfactant as described above and a nonionic surfactant having an HLB of 10 to 16.

A particularly preferable blending ratio of the active ingredient is 9: 1 to a weight ratio of the alkyloylalkyl taurine salt type anionic surfactant represented by the general formula (A) and the nonionic surfactant having an HLB of 10 to 16. It is in the range of 1: 1 and the total amount of both is in the range of about 10 to 50 parts by weight.

The present inventors have found that an HLB of 10 to 16 with an alloylalkyl taurine type surfactant represented by the general formula (A).
When the nonionic surfactants of are mixed in an appropriate mixing ratio,
The surface-active ability such as foamability and detergency is not inferior to that of the anionic surfactant represented by the general formula (A) alone, and at the same time, the protein denaturing power, that is, skin irritation is
It was discovered that the nonionic surfactant alone is significantly reduced to the extent that it is not inferior to that of the nonionic surfactant alone. It was presumed that the phenomenon in which this synergistic effect was exhibited was due to the formation of mixed micelles when considered by measuring the critical micelle concentration and the like. If the nonionic surfactant used has an HLB of less than 10, the protein denaturing power will decrease, but the nonionic surfactant may act as an oil due to the low HLB, causing foaming / Detergency is extremely poor.

Further, when a nonionic surfactant having an HLB of 16 or more is used, the protein degrading performance is not significantly lowered and the foaming property is also poor. Non-ionic surfactant HLB as described above
10 to 16 are preferred, and 11 to 14 are preferred HLBs that exhibit such effects.

In the present invention, the alkyloylalkyl taurine salt type anionic surfactant represented by the general formula (A) is, for example,
Alkyloyl groups R ₁ CO− include C ₁₁ H ₂₃ CO−, C ₁₃ H ₂₇ CO
_{-, C 15 H 31 CO-,} C 17 H 35 CO-, C 17 H 33 CO-, mixed alkyloyl group having 8 -C derived from coconut oil fatty acids 20 or the like, the alkyl group R _2, CH ₃ −C ₂ H ₅ −, C ₃ H ₇ −
However, examples of the counter ion M include -Li, -K, -Na, monoethanolamine, diethanolamine, triethanolamine and the like.

The nonionic surfactant used in the present invention is HLB10.
To 16, preferably 11 to 14, nonionic surfactants such as polyoxyethylene hydrogenated castor oil type and particularly preferably polyoxyethylene alkyl ether type nonionic surfactants.

HLB is the balance of hydrophilic and lipophilic properties (Hydrophilic
-Lypophilic Balance), and in the present invention, a value calculated using the formula by Oda / Teramura et al. Is used.

The cleaning composition of the present invention may contain known cleaning composition components in addition to the above essential components. For example, amphoteric surfactants, cationic surfactants, higher alcohols, lanolin derivatives, protein derivatives, and oily components such as fatty acid esters of polyethylene glycol, propylene glycol, glycerin, polyethylene glycol, etc., which do not impair the effects of the present invention. Moisturizer components such as, botanical extracts such as crude drugs,
Cationic, anionic, nonionic, etc. water-soluble polymer substances, sequestering agents, preservatives, bactericide pH modifiers, UV absorbers, antioxidants, pigments and fragrances are added as needed. I can.

Particularly, a cationic polymer substance, which is blended for the purpose of improving usability in a shampoo composition, such as a cation-modified cellulose ether derivative (polymer JR (UCC), etc.),
Polyvinylpyrrolidone derivative quaternary ammonium (Gafcoat (GAF) etc.), polymer of diallyldimethylammonium chloride (Merk) etc., Polyacrylic acid derivative quaternary ammonium (Cartex (National Starc
h) etc.), polyamide derivative quaternary ammonium (Sandoz
Etc., the amount adsorbed on the hair is increased by blending it with the detergent composition of the present invention, and the usability can be far improved over blending with other bases.

〔The invention's effect〕

The present invention will be specifically described below with reference to experimental examples. The test methods examined in the examples are as follows.

Foaming test method CaCO ₃ 70 ppm artificial hard water was used to prepare 400 ml of a 1% sample concentration solution, and the foaming amount was measured using a cylindrical cylinder equipped with a stirrer at a temperature of 40 ° C.

◎ ... Very good foaming 2500ml or more ○ ... Slightly good foaming 2000ml to less than 2500ml △ ... Normal foaming 1500ml to less than 2000ml × ... Poor foaming less than 1500ml Detergency test method CaO / MgO = 3/1, A 5% DH artificial hard water was used to prepare a 1% sample concentration solution, and the artificial sebum-contaminated cloth using a wool surge was washed.

Washing was performed under a temperature of 40 ° using a tergotometer (JIS K-3371), and the washing efficiency was obtained from the reflectance before and after washing.

Ro: Reflectivity of original cloth (wool surge) Rs: Reflectivity of contaminated cloth Rw: Reflectivity of contaminated cloth after cleaning ◎… Extremely good cleaning efficiency Cleaning efficiency 90% or more ○… Slightly good cleaning efficiency 80% or more Cleaning efficiency Less than 90% △… Washability Normal Washing efficiency 60% or more but less than 80% ×… Washing efficiency Less than 60% Washing efficiency Protein denaturation measurement method Using aqueous high performance liquid chromatography, ovalbumin pH7 buffer solution, sample concentration 1 The rate of denaturation of ovalbumin when the sample was added so as to be% was measured using a 200 nm absorption peak.

Ho: 220 nm absorption peak height of ovalbumin Hs: 220 nm absorption peak height when a sample is added to ovalbumin buffer ◎… Ovalbumin denaturation rate less than 30% ○… Ovalbumin denaturation rate 30% or more 60% Less than △… Ovalbumin denaturation rate of 60% or more and less than 80% ×… Ovalbumin denaturation rate of 80% or more Skin irritation test method Prepare a 10% sample concentration solution with ion-exchanged water and soak the guinea pig in this test solution for 4 hours daily Then repeat this for 3 days. After the immersion for 12 hours, the reaction appears for 2 days. The reaction was judged according to the five items of erythema, edema, relaxation, desquamation, and cracks.

◎: Almost no irritation (Erythema develops) ○: Mild irritation (Erythema / relaxation develops) ×… Strong irritation (erythema / edema / relaxation / exfoliation develops) ×… Super Strong irritancy (Erythema erythema, edema, relaxation, desquamation, cracks appear) Experimental Example 1 A shampoo having the composition shown in Table 1 below was prepared, and its foamability, detergency, and protein denaturation rate were adjusted.・ Skin irritation was examined.

Experimental Example 2 A shampoo having a blending composition shown in Table 2 below was prepared, and its foamability, detergency, protein denaturation rate, and skin irritation were examined.

Example 1 A shampoo having the following composition was prepared.

Lauroymethyl taurine-Na 17 Polyoxyethylene (EO average 12 mol) 5 Lauryl ether [HLB13.0] Diethanolamide laurate 3 Glycerin 2 Cationized cellulose 0.5 (Polymer JR-400 (UCC)) Fragrance 0.2 Water Residual shampoo The same performance evaluation test as in Example 1 was performed, and the results of foamability ◯, detergency ◯, protein denaturation rate ◎, and guinea pig skin irritation ◎ were obtained. In addition, the influence on the usability of cationized cellulose is particularly dependent on the case of polyoxyethylene (EO average 12 mol) lauryl ether,
It was more prominent.

Example 2 A kitchen detergent having the following composition was prepared.

Cocoyl methyl taurine-Na 10 polyoxyethylene (EO average 12 moles) 10 branched lauryl ether [HLB13.0] coconut oil fatty acid diethanolamide 7 polyoxyethylene (EO average 3 moles) 2 lauryl sulphate-Na ethyl alcohol 5 fragrance 0.2 Water Residue This kitchen detergent was subjected to the same performance evaluation test as in Example 1, and the results of foamability ◯, detergency ◯, protein denaturation rate ◎, and guinea pig skin irritation ◎ were obtained.

Example 3 A face wash having the following composition was prepared.

Cocoyl methyl taurine-Na 5 Polyoxyethylene (EO average 30 mol) 5 Hydrogenated castor oil [HLB10.7] Potassium myristate 15 Stearic acid 1 Myristic acid 1 Glycerin 20 Glycerin monooleate 2 Perfume 0.3 Water Residual wash The same performance evaluation test as in Example 1 was carried out, and the results of foamability ◯, detergency ◯, protein denaturation rate ⊚, and guinea pig skin irritation ⊚ were obtained.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location C11D 1:72 1:74) (72) Inventor Hiroshi Tanaka 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Share company Shiseido Research Institute (72) Inventor Yoshihiro Ohata 1050 Shinba-cho, Kohoku-ku, Yokohama-shi, Kanagawa Stock Company Shiseido Research Institute (72) Inventor Masataka Ogawa 1050 Shinba-cho, Kohoku-ku, Yokohama-shi Kanagawa Shiseido Research Institute (56) Reference JP-A-57-83598 (JP, A) JP-A-58-117291 (JP, A) JP-A-59-100198 (JP, A) SOAP CHEMICAL SPEC IALIES for November, 1967 P. 176 SOAP / COSMETICS / CHE MICAL SPECIALTIES for DECEMBER, 1973 P.M. 151 Household Personal Products Industry, Novemer, 1978 P. 28 NIKKOL N-3-8, Apr, 1979.

Claims (2)

[Claims] 1. A general formula (Wherein R ₁ represents an alkyl group or an alkenyl group having an average carbon number of 7 to 19, R ₂ represents a lower alkyl group having an average carbon number of 1 to 3, and M represents an alkali metal or an organic amine). Characterized by containing an alkyloylalkyl taurine salt type anionic surfactant and a polyoxyethylene alkyl ether type and / or polyoxyethylene hydrogenated castor oil type nonionic surfactant having an HLB of 10 to 16. A cleaning composition. 2. The weight of the ankyloylalkyl taurine salt type anionic surfactant and the polyoxyethylene alkyl ether type and / or polyoxyethylene hydrogenated castor oil type nonionic surfactant having an HLB of 10 to 16. Ratio is
The cleaning composition according to claim 1, characterized in that it is in the range of 9: 1 to 1: 1.