JPH0631402B2 - Hard surface cleaning composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is a hard surface which is remarkably relieved of irritation and damage to the skin, and has excellent foaming and washing power, and also has good rinsability and hand feel. Regarding cleaning agents.

[Conventional technology]

The current hard surface cleaning agents for tableware and the like are usually mainly aimed at removing greasy stains, and in most cases, the user often removes greasy stains by foaming with a hand or a sponge when using the cleansing agent. The function of the foam at this time is to relieve the force required to scrape off the dirt, and in many cases, the amount of foaming is often a measure of the cleaning property of grease stains. Therefore, in such a detergent, its high foaming power is an important factor, and conventional hard surface detergents have alkylbenzene sulfonate, α-olefin sulfonate, alkyl sulphate, paraffin sulfonate as main surfactants, Anionic surfactants such as ethoxylated alkyl ether sulphates have been used. Among them, sodium alkylbenzene sulfonate has been widely used as a base having excellent cleaning performance, but it has a strong degreasing power from the skin and has a drawback that it easily causes rough hands. Therefore, recently, by using polyoxyethylene alkyl ether sulfate ester salt, which is less irritating to the skin, as the main washing base, and by using auxiliary surfactants such as alkyl tertiary amine oxide and higher fatty acid diethanolamide, Cleaning agents having a milder action on the skin while improving the foaming power and foaming power have become mainstream.

However, although the action of the detergent containing the anionic surfactant as the main ingredient on the skin has become milder than the conventional one, it does not yet reach a sufficiently satisfactory level under the present circumstances. is there.

Since anionic surfactants have dissociative groups, they are essentially easily adsorbed on the skin, and there is a limit to improving skin irritation.
Therefore, non-ionic surfactants with low adsorptivity to the skin,
For example, when a nonionic surfactant having an alkylene oxide as a hydrophilic group represented by polyoxyethylene alkyl ether etc. as a main agent is used as the main ingredient, the adsorbability to the skin is certainly low, but the foaming power is anionic. Since it is significantly inferior to a detergent composition containing an activator as a main component, it cannot satisfy the requirements as a detergent.

On the other hand, alkyl glycosides, which are sugar derivative surfactants, are not only mild surfactants, and even though they are nonionic surfactants, they not only generate stable foams themselves, but also other surfactants. It is known to act as a foam stabilizer for ionic surfactants, and has been attracting 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 dishwashing liquid detergent composition containing an activator and a fatty acid alkanolamide and having low irritation and excellent foaming power and detergency is described. However, although the performances of these compositions are superior to conventional polyoxyethylene alkyl ether-based detergents, they are still insufficient. In particular, it is inferior in rinsability after washing and hand feel.

[Means for Solving the Problems]

The inventors of the present invention have conducted intensive studies to maximize the properties of alkyl glycosides, and as a result, H
It has been found that the combined use of a nonionic surfactant having an LB of less than 5 further reduces the irritation to the skin, enhances the cleaning power and the foaming power, and improves the rinsing property and the feel of the hand. The present invention has been completed.

That is, the present invention contains (a) an alkyl glycoside surfactant, (b) a nonionic compound having an HLB of less than 5, and (c) a monohydric alcohol or a polyhydric alcohol having 1 to 3 carbon atoms, ) / (A) is in the range of 1/200 to 1/2 by weight, and a hard surface cleaning composition is provided.

In the present invention, the component (a) used as the main surfactant is represented by the following general formula (I).

R ₁ (OR ₁ ) _x G _y (I) (In the above formula, R ₁ is a straight-chain or branched-chain carbon atom having 8 to 18 carbon atoms.
Represents an alkyl group, an alkenyl group or an alkylphenyl group, R ₂ represents an alkylene group having 2 to 4 carbon atoms, G is a residue derived from a reducing sugar having 5 to 6 carbon atoms, and x is the average thereof. The value is 0-5. The average value of y is 1 to 10. ) X has an average value of 0 to 5, and this value adjusts water solubility and crystallinity. That is, the higher x, the higher the water solubility and the lower the crystallinity. The preferred value of x is 0
~ 2. Then y is the average of which is greater than 1,
That is, when the surfactant represented by the general formula (I) having a sugar chain of two or more sugars as a hydrophilic group is contained, the sugar chain has a binding mode of 1-2, 1-3, 1-4, 1-6. Bond, further α-, β-
It is possible to include pyranoside, or furanoside linkages and any mixture thereof with mixed binding modes. Further, y is 1 to 10, but a preferable average value is about 1.
0 to 3.0. This is a preferable value in order to obtain a sufficient foaming effect with a smaller content of the nonionic surfactant which is a foaming agent described later. R ₁ is a linear or branched alkyl group having 8 to 18 carbon atoms, an alkenyl group, or an alkylphenyl group, and preferably has 10 to 14 carbon atoms because of its solubility, foaming property, and detergency. is there. Further, R ₂ is an alkylene group having 2 to 4 carbon atoms, but a preferable value is 2 to 3 from the viewpoint of water solubility. Further, the structure of G is determined by a monosaccharide or a raw material of two or more sugars. As the raw material of G, monosaccharides include glucose, galactose, xylose, mannose, lyxose, arabinose and the like, and a mixture thereof. Examples of two or more sugars include maltose, xylobiose, isomaltose, cellobiose, gentibiose, lactose, sucrose, nigerose, turanose, raffinose, gentianose, melezitose, and the like, and mixtures thereof. Among these, preferred monosaccharide raw materials are glucose and fructose because of their availability and low cost, and maltose and sucrose for two or more sugars.

The component (a) is usually 1 to 50% by weight in the composition, preferably 10
~ 35 wt% is compounded.

The nonionic compound which is the component (b) of the present invention is, for example, a compound exemplified below.

Higher alcohol, alkylphenol, fatty acid, fatty acid amide, higher alkylamine, glycerol, pentaerythritol, sorbitol, fatty acid ester of polyhydric alcohol such as sorbitan, alkyl phenyl ether,
And alkylene oxide adducts of these compounds, alkyl ethers of polyhydric alcohols represented by glyceryl ether and the like. Among them, preferable nonionic compounds include nonionic surfactants of the type represented by the following general formula (II) having glycerin as a hydrophilic group.

R ₃ (CO) _s (OR ₄ ) _z L _w (II) (In the above formula, when R ₃ is 1, saturated or unsaturated, straight chain or branched chain fatty acid residue having 8 to 18 carbon atoms. Represents a group,
When s is 0, it represents a linear or branched alkyl group, alkenyl group or alkylphenyl group having 8 to 18, R ₄ represents an alkylene group having 2 to ₄ carbon atoms, and L represents a residue derived from glycerin. A group, z is 0 to 5, and w is 1 to 5
Is. ) Here, the average value of z is 0 to 5, but this value is 5
If it exceeds, HLB becomes high and the desired composition cannot be obtained. The preferred value of z is 0-2. Then w has an average of 1
In some cases, that is, it may have a glycerin skeleton of a di-form or more as a hydrophilic group, and the binding mode between the alkyl group and the glycerin skeleton may be an ester compound or an ether compound.

Examples of the esterified product include monoglyceride, diglycerin fatty acid monoester, triglycerin fatty acid monoester and the like.

An example of the etherified product is an etherified product of glycerol or polyglycerol and alcohol, that is, an alkyl glyceryl ether compound.

Among these nonionic compounds, those which can be used in the present invention are compounds having an HLB value calculated by the following method of less than 5, preferably less than 4.

* Definition of HLB JTDavies and EKRideal, Interfacial Phenomena,
Academic Press, New York 1963, pp.371-383 by H
It was determined as LB = 7 + Σ (number of hydrophilic group) −Σ (number of hydrophobic group).

The number of groups in each atomic group is as follows.

Number of atomic groups Hydrophilic group Ester (sorbitan ring) 6.8 Ester (free) 2.4 -COOH 2.1 OH (free) 1.3 -O- 0.5 OH (sorbitan ring) 0.5 Lipophilic group Derivative group Conventionally, the nonionic compounds often used in hard surface cleaners have an HLB of 5 or more, usually about 6-15. When these nonionic surfactants are used in combination with an alkyl glycoside, the foaming property is rather suppressed. Nonionic compounds with HLB less than 5 are 1/200 to 1 with respect to alkyl glycosides
When used together in a weight ratio of / 2, preferably in the range of 1/5 to 1/30, a remarkable foam increasing action is exhibited.

Generally, all nonionic compounds having an HLB of less than 5 have a high melting point and are poorly soluble in water. However, in a mixed system of the component (a) and a monohydric alcohol or a polyhydric alcohol having 1 to 3 carbon atoms, a stable state suitable as a detergent composition for the present purpose is obtained because it easily and uniformly dissolves transparently. You can

The monohydric alcohol or polyhydric alcohol having 1 to 3 carbon atoms which is the component (c) of the present invention includes ethanol, ethylene glycol, glycerin, etc.
%, Preferably 2 to 7% by weight.

The composition of the present invention contains other optional components used in ordinary liquid detergent compositions such as anionic surfactants, amphoteric surfactants and other nonionic surfactants within a range that does not impair the desired performance. Surfactants, fragrances, dyes, preservatives, fungicides and the like can be added as desired.

〔Example〕

Next, the present invention will be described in more detail with reference to Examples.
The invention is not limited by these examples. First, the foaming power, detergency, hand roughening property, rinsing property, and hand feel test used in the examples will be described.

(1) Foaming power test Commercially available butter is used as a stain component in a cleaning solution having a detergent composition concentration of 0.5% by weight (water: water having a hardness of 3.5 ° DH) of 0.1% by weight.
The foaming power when added is measured. The measuring method is as follows. Put 40 m of the above detergent solution containing butter into a glass cylinder having a diameter of 5 cm, rotate and stir at 20 ° C. for 15 minutes, and measure the foam height immediately after stopping.

(2) Evaluation of detergency Sudan III (red pigment) 0.1% was added to beef tallow, 2.5 g of this was applied to a porcelain dish (diameter 25 cm), 3 g of detergent, water (water; hardness 3.5 °) DH water) Scrub with a sponge soaked with 27g at 20 ℃, wash the number of dishes until the beef tallow can no longer be removed from the dishes (the number of effective washing), and until no bubbles are formed. Both the number of dishes (designated as the foam end point) is shown.

(3) Hand roughness test A 5% by weight detergent composition detergent solution was prepared and the liquid temperature was 30 ° C.
Keep it for 20 minutes, soak your hands for 20 minutes, and then wash it thoroughly with water. This operation is repeated for 3 days. The condition of the hands of the five test subjects was visually judged after 4 days according to the following criteria, and shown as an average point. The evaluation criteria at this time are as follows.

In this test, the average score is preferably 4 or more.

5 points: Almost no rough surface is observed 4 points: Only a slight amount of rough surface is recognized 3 points: A little rough surface is recognized 2 points: A large amount of rough surface is recognized 1 point: A large amount of rough surface is recognized (4) Rinseability, use Hand feel after and after use Two kinds of detergents A and B are prepared and placed in 2 beakers each
Prepare a 10% by weight detergent solution at 40 ° C. The feelings of the aqueous solutions of detergents A and B are compared by a sensory test in the following manner.

Feeling of liquid Dip it into the aqueous solutions of detergents A and B separately up to the right and left wrists.
The feeling of the liquid after 1 minute of immersion is adopted at the following evaluation points based on the detergent A.

Rinseability of hands Rinse the dipped hands one by one with running water at 40 ° C, and use the ease of rinsing with detergent A at the following evaluation points.

Feeling after use After rinsing thoroughly, wipe the hands with a dry towel and score the feel of the hands with detergent A at the following evaluation points.

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.

Example 1 The compositions shown in Table 1 below were prepared, and the detergency, foaming ability, rinsability, and feel of the hand during and after use were evaluated by the above evaluation methods. The results are shown in Table 1.

In addition, the comparative detergent used for the test of rinsing property, the feel of the hand during use and after use was detergent A (17 in Table 1), and the comparative test was conducted for this and detergent B (1 to 16 in Table 1). It was

Claims (1)

[Claims] 1. A method comprising (a) an alkyl glycoside surfactant, (b) a nonionic compound having an HLB of less than 5, and (c) a monohydric alcohol or a polyhydric alcohol having 1 to 3 carbon atoms, ) / (A) is in the range of 1/200 to 1/2 in weight ratio, The hard surface cleaning composition characterized by the above-mentioned.