JP2566816B2 - Detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a detergent composition, and more specifically, it has significantly reduced irritation and damage to skin and hair, and has excellent foaming and detergency. In addition, the present invention relates to a cleaning composition having good rinsing properties and good hand feel during use.

[Problems to be Solved by Prior Art and Invention]

Nowadays, people are becoming more and more aware of the safety of the human body, and detergents that often come into contact with human skin such as laundry detergents, kitchen detergents, household detergents, hair detergents and body detergents. Various attempts have been made in order to moderate the action on the skin, for example, by adjusting the pH of the composition to 5 to 6 (weakly acidic), and bringing it close to the pH of human skin, Methods such as making the action mild and using a mild stimulant as the main washing base have been adopted. As such a mild detergent base, an amino acid-based surfactant or an alkylphosphoric acid-based surfactant is used (Japanese Examined Patent Publication No. 40-40125, Japanese Examined Publication No. 51-426023, Japanese Examined Patent Publication No. 55-55). -9033, Japanese Examined Patent Publication 58-2731
No. 9). However, although these surfactants are hypoallergenic, they have drawbacks such as not being able to exhibit sufficient foaming power and detergency alone and poor solubility. In addition, sodium alkylbenzene sulfonate has been widely used as a base material with excellent cleaning performance in kitchen detergents, but it has the disadvantage that it has a strong degreasing power from the skin and easily causes rough hands. ing.

For this reason, kitchen detergents based on sodium alkylethoxysulfate, which is less irritating to the skin, as the main washing base have recently become the mainstream, and further, tertiary amine oxides and higher fatty acids By using a co-surfactant such as diethanolamide together, various performances are further improved, and at the same time, the action on the skin has become milder.

However, although the action of various detergents on the skin has become milder than in the past, the present situation is that it has not yet reached a sufficiently satisfactory level.

Alkyl glycosides, which are sugar derivative surfactants, on the other hand, are low-irritant surfactants and, despite being non-ionic surfactants, not only produce stable foams themselves, but also have other negative effects. It is known to act as a foam stabilizer for ionic surfactants, and has been receiving attention in recent years. For example, JP-A-58-104625 discloses a foaming surfactant composition containing an alkyl glycoside and an anionic surfactant, and JP-A 62-74999 discloses an alkyl glycoside and an anionic surfactant. A liquid detergent composition for dishwashing, which contains an activator and a fatty acid alkanolamide, is mild and has excellent foaming and detergency. However, although the performances of these detergent compositions are superior to those of conventional detergents based on polyoxyethylene alkyl ether, they are still insufficient, and they are particularly inferior in rinsability after washing and hand feel. Have a problem.

[Means for solving the problem]

In such an actual situation, the inventors of the present invention have conducted extensive studies to maximize the properties of the alkyl glycoside, and as a result, if a sulfate ester salt and / or a phosphate ester salt of a polyalkylene oxide adduct of a polyhydric alcohol were used in combination. The inventors have found that the irritation to the skin of a cleansing agent is further alleviated, the detergency and foaming power are enhanced, and the rinsability and the hand feel are also improved, and the present invention has been completed.

That is, the present invention provides the following components (a) and (b) (a) Alkyl glycoside (b) Sulfate ester salt and / or phosphate ester of polyalkylene oxide adduct of polyhydric alcohol having an average molecular weight of 400 to 10,000. A detergent composition comprising a salt and having a weight ratio of (b) / (a) in the range of 1/300 to 1/2.

In the present invention, the alkyl glycoside of the component (a) is used as a main surfactant, and has the following general formula (I) R ₁ (OR ₂ ) _x G _y (I) wherein R ₁ is A chain or branched alkyl group having 8 to 18 carbon atoms, an alkenyl group or an alkylphenyl group,
R ₂ represents an alkylene group having 2 to 4 carbon atoms;
And x is a number whose average value is 0 to 5, and y is a number whose average value is 1 to 10].

In the above formula, R ₁ is a straight-chain or branched-chain alkyl group having 8 to 18 carbon atoms, alkenyl group or alkylphenyl group. ~
14 is preferable.

R ₂ is an alkylene group having 2 to 4 carbon atoms, and particularly preferably has 2 to 3 carbon atoms from the viewpoint of solubility in water.

G is a residue derived from a reducing sugar having 5 to 6 carbon atoms, and its structure is determined by a monosaccharide or two or more sugars used as a raw material. As a raw material for this G,
Monosaccharides include glucose, galactose, xylose, mannose, lyxose, arabinose and mixtures thereof, and disaccharides and more include maltose, xylobiose, isomaltose, cellobiose, gentibiose,
Lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose, and mixtures thereof. Of these, monosaccharide raw materials include glucose, because of their availability and low cost.
Fructose is preferred, and maltose and sucrose are preferred for disaccharides or more.

x represents a number whose average value is 0 to 5, and a particularly preferred average value is 0 to 2. This value adjusts the water solubility and crystallinity of the component (a). That is, the larger the value of x, the higher the water solubility and the lower the crystallinity.

In addition, y is a number whose average value is 1 to 10, and a particularly preferable average value is about 1.0 to 3.0. This is a preferable value in order to obtain a sufficient foaming effect when the content of the component (b) described below, which is a foaming agent, is smaller.

Further, when the average of y is greater than 1, that is, when y contains an alkyl glycoside represented by the general formula (I) having a sugar group of two or more sugar chains as a hydrophilic group, the binding mode of the sugar chain is 1
It is possible to include -2, 1-3, 1-4, 1-6 linkages, or any mixture that is an α-, β-pyranoside, or furanoside linkage and a mixed mode of these.

The component (a) is preferably incorporated in the composition of the present invention in an amount of 1 to 60% by weight (hereinafter simply referred to as%), particularly 10 to 40%.

The component (b) in the composition of the present invention is a sulfate ester salt and / or phosphate ester salt of a polyalkylene oxide adduct of a polyhydric alcohol.

Examples of the polyhydric alcohol as a raw material of the component (b) include dihydric alcohols such as ethylene glycol, propylene glycol and neopentyl glycol; trihydric or higher alcohols such as glycerin, polyglycerin, trimethylolpropane, pentaerythritol and sorbitol. It can be mentioned as a suitable one. Polyalkylene oxide is
Ethylene oxide (EO) or propylene oxide (PO)
Those obtained by addition-polymerizing any one or two of the above are preferable, and when the PO and EO are addition-polymerized, the addition state may be block or random. Polyalkylene oxide adduct of polyhydric alcohol has an average molecular weight of 400 to 1
It is 0,000. If it deviates from this range, the effect of the present invention cannot be exhibited.

The sulfuric acid ester salt and / or phosphoric acid ester salt of the polyalkylene oxide adduct of this polyhydric alcohol is produced by a conventional method (for example, JP-A-57-5796). The salt is a water-soluble salt, and as the salt, alkali metal salts, alkaline earth metal salts, alkanolamine salts, ammonium salts and the like are preferable, and among them, alkali metal salts and alkaline earth metal salts are particularly preferable. These (b) components are
They can be used alone or in combination of two or more. It should be noted that the sulfate ester salt and / or phosphate ester salt can introduce a number of sulfate groups and / or phosphate groups corresponding to the valence of the polyhydric alcohol, but the desired effect is sufficiently obtained. It is preferable that the number of sulfuric acid groups and / or phosphoric acid groups in one molecule is 4 or less in order to exert the effect.

The component (b) is contained in the composition of the present invention in an amount of 0.1 to 10%, especially 1 to 10%.
It is preferable to add 5%. If the blending amount is less than 0.1%, the effect of the present invention is not exhibited, while if it exceeds 10%, the stability of the composition is deteriorated, which is not preferable.

In the cleaning composition of the present invention, in addition to the above-mentioned essential components, a known activator for a liquid cleaning agent may be appropriately added and blended for the purpose of improving cleaning power and foaming power. . Examples of such activators include polyoxyethylene (average addition mole number 4 to 20) alkyl (C _{7 to} C ₁₈ linear or branched) ether, C _{3 to} C ₂₂ higher fatty acid mono- or dialkanol (C ₂ -C ₃₎ amide, a tertiary alkyl (C ₈ ~
C ₁₈ linear or branched) nonionic surfactant such as amine oxide; α-olefin (C _{8 to} C ₂₀ ) sulfonate [Na, K, Mg, triethanolamine, NH ₄ ], polyoxyethylene (linear or branched C ₈ -C ₁₈₎ sulfuric acid ester salt (average addition mole number 2 to 8) alkyl [Na, K, Mg, triethanolamine, NH _4], alpha-sulfo fatty acid ester salt ( _{R 5: C 8 ~C 18,} R 6: C 1 ~C 4, M: alkali metal), N- acyl (C ₈ ~C ₁₈₎ glutamate [Na, K, TEA], monoalkyl (C ₈ ~ C ₁₈₎ phosphate [Na, K, TEA, arginine], linear alkyl (C ₁₀ ~C ₁₈₎ benzenesulfonate [Na, K, M
g] and the like; and amphoteric activators such as alkyl betaine and alkyl sulfo betaine.

Further, other optional components can be added to the detergent composition of the present invention within a range that does not impair the separation stability, cleaning performance and foaming performance of the composition. For example, lower aliphatic alcohols such as ethyl alcohol, solubilizers such as sodium and potassium salts of toluenesulfonic acid and xylenesulfonic acid and urea, viscosity modifiers such as clay minerals and water-soluble polymer substances, calcite, silica stone Water-insoluble abrasives such as calcium phosphate, zeolite, polyethylene, nylon, and polystyrene; humectants such as glycerin and sorbitol; feel-improving agents such as cationized cellulose; and other enzymes, fragrances, pigments, antiseptic / antifungal agents, etc. be able to.

The pH range of the stock solution of the cleaning composition of the present invention is preferably from 4 to 10, and particularly preferably from 5 to 8.

〔The invention's effect〕

The detergent composition of the present invention has excellent detergency and rich foaming power, has a mild action on the skin and hair and has little rough skin, and is also excellent in rinsing properties and hand feel during use. It has high intellectual value.

〔Example〕

Next, the present invention will be described in more detail with reference to Examples.
The present invention is not limited to these examples.

The tests and evaluations in the examples were carried out as follows.

Test method and evaluation criteria (1) Foaming power test The foaming power is measured when 0.1% of commercially available butter is added as a stain component to a detergent solution having a detergent concentration of 0.5%. The measurement method was as follows: a detergent solution 4 containing butter in a glass cylinder 5 cm in diameter.
Add 0 ml, stir for 10 minutes, and measure the foam height immediately after stopping.

(2) Detergency test 0.1% of Sudan III (red dye) was added to beef tallow as an indicator, and 2.5 g of this was applied to a porcelain dish (25 cm in diameter). 3 g of detergent, water (water for use; hardness: 3.5 ゜ DH) Rub-wash at 20 ° C. using a sponge impregnated with 27 g of water) and indicate the number of washed dishes until no tallow can be removed from the dishes anymore.

(3) Rinseability The sample solution 3 with a concentration of 0.25% placed in a 30 cm diameter and 12 cm high bath is stirred for 10 minutes by rotation, and the cock attached to the bottom of the whipping bubble is opened to discharge only the liquid. Next, tap water 3 is added, and similarly, rotation stirring is performed for 10 minutes to drain the liquid. This operation is repeated by changing tap water until no bubbles are observed in the bat, and the number of tap water changes is evaluated.

(4) Hand feel during and after use Prepare two types of detergents A and B, each with 4
Prepare a 10% by weight detergent solution at 0 ° C. The feels of the aqueous solutions of the detergents A and B are compared by a sensory test as follows.

Feel of the liquid Immerse the left and right hands separately in the aqueous solution of detergent A and B up to the wrist.
The feel of the liquid after one minute of immersion is adopted based on the following evaluation points based on the detergent A.

Feeling after use After sufficient rinsing, the hand feeling after wiping hands with a dry towel is scored based on the following evaluation points based on detergent A.

The above test is conducted on 10 test subjects, and the feeling of use of detergent B is evaluated by the sum of the scores obtained for each item.

(5) Hand roughness test A detergent solution of 5% by weight of the detergent composition was prepared, and the solution temperature was adjusted to 30%.
Keep the temperature at ℃, soak your hands for 20 minutes every day, and wash well with water.
This operation is repeated for 3 days. Change the hand condition of 5 subjects to 4
After one day, the results were visually judged according to the following criteria, and indicated by an average score. The evaluation criteria at this time are as follows.

In this test, it is desirable that the average score is 4 or more.

5 points: Almost no rough hands 4 points: Only slightly rough hands 3 points: Some rough hands 2 points: Very rough hands 1 point: Significantly rough hands Example 1 Table 1 , A liquid detergent composition containing a sulfuric acid ester salt or a phosphoric acid ester salt of an ethylene oxide (EO) adduct or a propylene oxide (PO) adduct of various alkyl glycosides and various polyhydric alcohols, and detergency of each of them. The foaming power, rinsing property, hand feel and hand roughness were evaluated. Table 1 shows the results.

The comparative detergent used for the test of the feel of the hand before and after use was detergent A (15 in Table 1).
Comparative tests were conducted on (1 to 14 in Table 1).

The abbreviations of the components in the table are as follows. For example
GLY-EO-DS (Na) (1000) represents a disulfate salt (sodium salt) of an EO adduct of glycerin (average molecular weight 1000).

Abbreviation of polyhydric alcohol EGL: Ethylene glycol PGL: Propylene glycol GLY: Glycerin TMP: Trimethylolpropane PET: Pentaerythritol SOR: Sorbitol NPG: Neopentyl glycol Alkylene oxide abbreviation EO: Ethylene oxide adduct PO: Propylene oxide adduct Abbreviation MS: Monosulfate DS: Disulfate TS: Trisulfate DP: Diphosphate TP: Triphosphate Abbreviation of salt Na: Sodium salt K: Potassium salt TEA: Triethanolamine salt Example 2 Propylene oxide / ethylene oxide (PO / E) of various alkyl glycosides and various polyhydric alcohols shown in Table 2
O) A liquid detergent composition containing a sulfate ester salt or a phosphate ester salt of an adduct was prepared, and the cleaning power, foaming power, rinsing property, hand feel and rough hand property were evaluated for each. The results are shown in Table 2.

The comparative detergent used for the test of the feel of the hand before and after use was detergent A (9 in Table 1).
Comparative tests were conducted on (16 to 28 in Table 2).

The abbreviations in the table are the same as in Example 1, but PO / EO
The additional material is abbreviated as PE.

For example, GLY-PE [0.5 / 0.5] -TS (Na) (200) represents the trisulfate salt (sodium salt) of PO / EO adduct of glycerin (average molecular weight 200). However, the value in [] after PE indicates the molar ratio of PO / EO.

Example 3 A shampoo (for hair or body) having the following composition was prepared.

(%) Alkyl glycoside ^{* 1} 20 Thickener (hydroxyethyl cellulose) 0.2 GLY-PO-MS (1,500) ^{* 2} 2 Coconut oil fatty acid diethanolamide 0.5 Ethanol 3 Fragrance trace water balance (pH adjusted to 7.0) 100 * 1 General formula (I) x = 1, y = 1.5 R ₁ : C _{10 to} C ₁₃ R ₂ : C ₂ G: glucose residue * 2 The abbreviations are the same as in Example 1 Example 4 For a bathroom having the following composition A detergent was prepared.

(%) Alkyl glycoside ^{* 3} 5 PET-EO-MP (2,000) ^{* 4} 3 Citric acid 4 Perfume Trace color element Trace water remaining (pH adjusted to 5.0) 100 * 3 General formula (I) x = 0, y = 2.3 R ₁ : C _{10 to} C ₁₄ (branched) G: glucose residue * 4 The abbreviations are the same as in Example 1 Example 5 A liquid cleanser having the following composition was prepared.

(%) Alkyl glycoside ^{* 5} 4 SOR-PE [0.5 / 0.5] -DS (2,000) ^{* 6} 3 Abrasive (silica) 40 Perfume Trace antibacterial trace water Remainder (pH adjusted to 7.5) 100 * 5 General Formula (I) x = 2, y = 1.1 R ₁ : C _{9 to} C ₁₁ R ₂ : C ₂ G: glucose residue * 6 The abbreviations are the same as in Example 1 and Example 2.

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI technical display area C11D 1:29 1:34) (56) References JP-A-62-74999 (JP, A) Special features JP-A-57-5796 (JP, A) JP-A-1-168613 (JP, A) JP-B 39-19556 (JP, B1) US Patent 3219656 (US, A)

Claims (3)

(57) [Claims] 1. The following components (a) and (b) (a) Alkyl glycoside (b) Sulfate ester salt and / or phosphate ester of polyalkylene oxide adduct of polyhydric alcohol having an average molecular weight of 400 to 10,000. A detergent composition comprising a salt and having a ratio (b) / (a) of 1/300 to 1/2 by weight. 2. Component (a) is a compound represented by the following general formula (I): R ₁ (OR ₂ ) _x G _y (I) wherein R ₁ is a linear or branched alkyl group having 8 to 18 carbon atoms. Represents an alkenyl group or an alkylphenyl group,
R ₂ represents an alkylene group having 2 to 4 carbon atoms;
And x is a number whose average value is 0 to 5, and y is a number whose average value is 1 to 10]. Cleaning composition. 3. The detergent composition according to claim 1, wherein the component (b) is a sulfate ester salt and / or phosphate ester salt of a polyalkylene oxide adduct of ethylene glycol or glycerin.