JPH0575039B2 - - Google Patents

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a liquid detergent composition that can be widely used as a laundry detergent, a dishwashing detergent, a household detergent, a hair detergent, a human body detergent, etc., and in particular a liquid detergent composition with improved rinsability. The present invention relates to a drug composition. [Prior Art and Problems] Conventionally, liquid detergents, such as dishwashing detergents and hair detergents, have been developed based on detergent surfactants from the viewpoint of detergency, foaming power, skin gentleness, storage stability, etc. Various agents have been selected. Usually, anionic, nonionic and amphoteric surfactants are used alone or in combination of two or more.
In general, anionic surfactants have superior detergency and foaming power compared to nonionic surfactants and amphoteric surfactants, but on the other hand, they tend to be more irritating to the skin and have poor rinsing properties, so they are not satisfactory. It wasn't something I could do. On the other hand, nonionic surfactants and amphoteric surfactants each have advantages and disadvantages, such as low skin irritation but insufficient cleaning power, foaming power, and rinsing ability. In order to improve these drawbacks, various methods of combining anionic surfactants and nonionic surfactants, or anionic surfactants and amphoteric surfactants, etc., have been investigated. For example, Japanese Patent Publication No. 38-3264 and Japanese Patent Publication No. 38-38-38 disclose a method in which higher alcohol ether sulfate is used in combination with tertiary amine oxide to improve detergency and foaming power while suppressing skin irritation.
It is disclosed in Publication No. 17464. However, liquid detergents containing dodecyldimethylamine oxide, which has conventionally been commonly used as a tertiary amine oxide, are not fully satisfactory in terms of foam palatability and feel on hands, and have poor rinsability after washing. The drawback was that it got worse. Furthermore, a straight chain alkyl group with 14 carbon atoms
Combining the use of tertiary amine oxide containing 50% or more, higher fatty acid alkanolamide, and secondary alcohol ethoxylate as co-activators for higher alcohol ether sulfate (Japanese Patent Application Laid-Open No. 1987-1999)
112999), and the combination of a tertiary amine oxide with a linear chain ratio of 40 to 70% and a specific alkyl chain distribution and a higher fatty acid alkanolamide as a co-activator for higher alcohol ether sulfate (especially Publication No. 56-141400)
was proposed. However, in either case, the problem of poor rinsing performance after washing cannot be avoided. [Means for Solving the Problems] Under these circumstances, the present inventors conducted intensive research to overcome the above problems, and as a result, found that anionic surfactants, nonionic surfactants, and amphoteric interfaces By blending a specific dicarboxylic acid surfactant and a terpene hydrocarbon with at least one non-synthetic synthetic surfactant selected from active agents, it has excellent cleaning power and foaming power. The present invention was completed based on the discovery that it is possible to obtain a liquid detergent composition that has good rinsability and less roughness on hands. That is, the present invention provides at least one component selected from the following components (A), (B), and (C) (A) anionic surfactants, nonionic surfactants, and amphoteric surfactants.
5-60% by weight of non-synthetic synthetic surfactants (B) Following general formulas (), () and ()

【formula】

【formula】

〔Effect of the invention〕

The liquid detergent composition of the present invention can be used in laundry detergents, dishwashing detergents, household detergents, hair detergents, human body detergents, etc. without impairing the original functions, that is, cleaning power and foaming power. This liquid detergent composition has excellent rinsability and is less likely to cause rough hands, making it of high practical value. [Examples] Next, the present invention will be explained in more detail with reference to Examples, but the present invention is not limited to these Examples. Test method and evaluation criteria (1) Foaming power test The foaming power is measured when 0.1% by weight of commercially available butter is added as a staining ingredient to a detergent solution with a detergent concentration of 0.5% by weight. The measurement method is to put 40 ml of the above detergent solution containing butter into a glass cylinder with a diameter of 5 cm, rotate and stir for 10 minutes, and measure the foam height immediately after stopping. (2) Cleaning power test Sudan (red pigment) was added to beef tallow as an indicator.
0.1% by weight was added, and 3 g of this was placed in a porcelain dish ((diameter 25
cm) is rubbed with a sponge soaked in 10 g of detergent and 20 g of water, and the number of plates washed until the tallow can no longer be removed from the plates is shown. (3) Rinseability: Concentration 0.25 in a vat with a diameter of 30 cm and a height of 12 cm.
% sample solution 3 for 10 minutes, then open the pot attached to the bottom of the vat to drain only the liquid. Next, add tap water 3 and perform similar rotational stirring for 10 minutes to drain the liquid. This operation is repeated by changing the tap water until no bubbles are observed in the vat, and evaluation is made based on the number of times the tap water is replaced. (4) Colorability Fill a 300ml transparent polyester bottle with the cleaning composition and leave it in a constant temperature room at 50°C for 20 days.
After standing, the degree of coloring is observed with the naked eye. (Evaluation criteria) 0: Not colored 1: Slightly colored 2: Significantly colored 3: Significantly colored 4: Very significantly colored (5) Low temperature stability The cleaning composition was filled into a 300ml transparent polyester bottle. , and leave it in a constant temperature room at -5℃ for 10 days.
After standing, visually observe the condition of the liquid inside. (Evaluation criteria) A: No change at all B: Slightly cloudy C: Significantly cloudy Example 1 The liquid cleaning composition shown in Table 1 was prepared, and the cleaning power, foaming power, coloring property, rinsability, and low temperature stability were evaluated. We conducted an evaluation. The results are shown in Table 1.

【table】

[Blend composition]

Blending ratio (wt%) Polyoxyethylene (=4) Sodium lauryl sulfate 20 Sodium alkane ( _C14 ) sulfonate 5 Softanol 30 ⁽ Note ¹⁾ 3 Dicarboxylic acid surfactant (see Table 2) 0-5 L-limonene 1 Ethanol 3 Sodium paratoluenesulfonate 2 Water Balance amount Note 1: Ethylene oxide adduct of secondary alcohol [manufactured by Nippon Shokubai Co., Ltd.]

[Blend composition]

Blending ratio (wt%) Sodium laurylbenzenesulfonate 15 Polyoxyethylene (=2) Sodium lauryl sulfate 5 Softazoline CH ⁽ Note ¹⁾ 3 Monopotassium octenylsuccinate 1 Plant aromatic oil (terpene hydrocarbon; see Table 3)
0.005-10 Ethanol 5 Water Balance amount Note 1: Alkylimidazoline type amphoteric surfactant [manufactured by Kawaken Fine Chemical Co., Ltd.]

[Table] Example 4 A hand roughening test was conducted on Composition No. 16 (inventive product) and Composition No. 23 (comparative product) shown in Example 3 by the following method. The results are shown in Table 4. <Rough hands test method> Dip the left and right palms in a detergent solution and perform a pair ratio. Test personnel: 10 people for the detergent to be compared Immersion period: 30 minutes a day for 2 consecutive days and judgment the next morning Immersion concentration: 12% detergent solution Immersion concentration: 40℃ Evaluation method: The right hand is the standard, and changes in the left hand are observed. to grade. +2 Very good +1 Good 0 No difference -1 Bad -2 Significantly bad Judgment is made by summing the evaluated scores.

[Table] From the results in Table 4, it can be seen that the product of the present invention (No. 16) has superior skin mildness compared to the comparative product (No. 23).

Claims (1)

[Claims] 1. At least one of the following components (A), (B) and (C) (A) selected from anionic surfactants, nonionic surfactants and amphoteric surfactants;
Non-synthetic synthetic surfactant 5-60% by weight (B) The following general formulas (), () and () [Formula] [Formula] [Formula] [In the formula, R ₁ is a carbon number of 8-16 Represents a linear or branched alkyl group or alkenyl group,
R ₂ and R ₃ may have a branched chain -(CH ₂ -CH ₂
-O) _o -(CH ₂ ) _n group (m = 1 to 5, n = 0 to 5)
and M ₁ and M ₂ represent hydrogen, alkali metals, alkaline earth metals, or alkanolamines] One or more dicarboxylic acid surfactants selected from the compounds represented by 0.05 to 5% by weight (C) A liquid detergent composition containing 0.01 to 3% by weight of a terpene hydrocarbon selected from monoterpenes and sesquiterpenes, and having a pH of 4 to 9. 2 (B) component has the following general formula () [Formula] [In the formula, R ₁ represents a straight-chain or branched alkyl group or alkenyl group having 8 to 16 carbon atoms, and M ₁
and _M2 represents hydrogen, an alkali metal, an alkaline earth metal, or an alkanolamine.] The liquid cleaning composition according to claim 1, which is a dicarboxylic acid surfactant represented by the following formula.