JP2018109125A - Liquid detergent composition for clothing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a liquid detergent composition which shows excellent detergency to sebum soils adhered to a clothing with an extremely decreased use amount than the conventional condensation-type liquid detergent and also shows excellent stability as a composition.SOLUTION: The liquid detergent composition contains three kinds of nonionic surfactants of specified structures (polyoxyalkylene alkylamines, polyoxyethylene alkyl ethers, polyoxyalkylene alkyl ethers) blended at a specified ratio, thereby having excellent detergency with an extremely small use amount and also having excellent stability in appearance.SELECTED DRAWING: None

Description

  The present invention relates to a liquid detergent composition for clothing, and more particularly, to a liquid detergent composition for clothing having excellent detergency even with a small amount of a surfactant and excellent in stability of the composition. Is.

  There are two types of cleaning agents for clothing: powder cleaners and liquid cleaners. In recent years, the amount of cleaning agent used is small and there is no undissolved residue, which leads to water saving and time saving. Has become the mainstream.

  There are two types of liquid detergents: general-purpose liquid detergents and concentrated liquid detergents. The general usage amount of the general-purpose liquid detergent is about 20 to 25 g with respect to 1.5 kg of laundry. On the other hand, the general usage amount of the concentrated liquid cleaning agent is about 10 g per 1.5 kg of the laundry.

  In this way, the concentrated liquid cleaning agent has less usage for the same amount of laundry than the general-purpose liquid cleaning agent, so resources and labor can be reduced in the manufacturing and transportation process by making the product form compact, In addition, since the concentration of the surfactant contained in the waste water when washing is kept low, there is an advantage that the burden on the environment is small.

JP 2003-138297 A

  Although the amount of the conventional concentrated liquid detergent composition used for 1.5 kg of laundry is reduced compared to the general-purpose liquid detergent, it is not always sufficient. Furthermore, further improvement has been demanded from the viewpoint of detergency.

  The present invention has been made in view of the above problems, and has an excellent detergency against dirt adhered to clothing, particularly sebum dirt, even when used in a much smaller amount than conventional concentrated liquid detergent compositions. In addition, the present invention provides a liquid detergent composition having excellent stability as a composition.

  As a result of diligent research to solve the above-mentioned problems, the present inventors blended three kinds of nonionic surfactants having a specific structure at a specific ratio, so that sebum stains can be obtained even in a very small amount of use. As a result of further research, the present invention has been completed.

（式（１）中、Ｒ^１は炭素数８〜２４の直鎖状又は分岐鎖状のアルキル基又はアルキレン基を表し、Ａ^１Ｏ及びＡ^２Ｏは各々独立に炭素数２〜４のオキシアルキレン基を表し、ｍ及びｎはオキシアルキレン基の平均繰返し数を表し、各々独立に０以上の数であり、ｍ＋ｎは３〜６０の整数である。）と、
（Ｂ）下記一般式（２）で表されるポリオキシエチレンアルキルエーテル
（式（２）中、Ｒ^２は炭素数１０〜１８のアルキル基又はアルケニル基を表し、Ａ^３Ｏはオキシエチレン基を表し、ａは平均付加モル数を表し、３〜１２の整数である。）と、
（Ｃ）前記（Ｂ）成分を除く、下記一般式（２）で表されるポリオキシアルキレンアルキルエーテル
（式（２）中、Ｒ^２は炭素数１０〜１８のアルキル基又はアルケニル基を表し、Ａ^３Ｏは炭素数２〜４のオキシアルキレン基を表し、ａは平均付加モル数を表し、３〜３５の整数である。）と、

を含有し、前記（Ａ）成分の含有率が２０〜３５重量％、前記（Ｂ）成分の含有率が１〜２５重量％、前記（Ｃ）成分の含有率が１〜３０重量％であり、前記（Ａ）〜（Ｃ）成分の合計含有率が２２〜６０重量％であることを特徴とする衣料用液体洗浄剤組成物である。 That is, the present invention
(A) Polyoxyalkylene alkylamine represented by the following general formula (1)

(In Formula (1), R ¹ represents a linear or branched alkyl group or alkylene group having 8 to 24 carbon atoms, and A ¹ O and A ² O are each independently an oxy group having 2 to 4 carbon atoms. Represents an alkylene group, m and n represent the average number of repetitions of the oxyalkylene group, each independently a number of 0 or more, and m + n is an integer of 3 to 60).
(B) A polyoxyethylene alkyl ether represented by the following general formula (2) (in the formula (2), R ² represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, and A ³ O represents an oxyethylene group. And a represents the average number of moles added and is an integer from 3 to 12.)
(C) A polyoxyalkylene alkyl ether represented by the following general formula (2) excluding the component (B) (in the formula (2), R ² represents an alkyl group or an alkenyl group having 10 to 18 carbon atoms, A ³ O represents an oxyalkylene group having 2 to 4 carbon atoms, a represents an average added mole number, and is an integer of 3 to 35).

The content of the component (A) is 20 to 35% by weight, the content of the component (B) is 1 to 25% by weight, and the content of the component (C) is 1 to 30% by weight. The liquid detergent composition for clothes, wherein the total content of the components (A) to (C) is 22 to 60% by weight.

In addition to the above features, the present invention provides the component (B), wherein the average added mole number represented by a in the general formula (2) is 7 to 9 mol, and represents the component (C). The liquid cleaning composition for clothing, wherein the alkyl group or alkenyl group represented by R ² in the general formula (2) has 12 to 14 carbon atoms.

  Furthermore, the present invention provides the liquid washing for clothing, wherein the total content of the component (A), the component (B) and the component (C) is 25 to 55% by weight in addition to the features described above. Agent composition.

  In addition to the above features, the present invention provides a liquid washing for clothing, wherein the total content of the component (A), the component (B) and the component (C) is 40 to 55% by weight. Agent composition.

  Furthermore, in addition to the above characteristics, the present invention provides a total amount of the nonionic surfactants (A) to (C) in the range of 2.0 to 4.0 g in a standard usage amount for laundry of 1.5 kg. This is a liquid detergent composition for clothing.

  According to the present invention, it is possible to provide a liquid detergent composition for clothing that has an excellent detergency against sebum soil even with a small amount of use, and also has excellent stability as a composition. Is possible.

  Hereinafter, the liquid cleaning composition for clothes according to the present invention will be described in detail. In addition, about the structure, the component, the manufacturing method, and the like that are not described, the same or substantially the same as those known to those skilled in the art can be used.

  The liquid detergent composition for clothing according to the present invention is characterized by containing three different types of nonionic (nonionic) surfactants (A) to (C). Nonionic surfactants are not easily affected by electrolytes and pH values in water, and can be used in combination with other types of surfactants, and have advantages such as excellent permeability, emulsification / dispersibility, and detergency. Yes.

The component (A) is a polyoxyalkylene alkylamine represented by the general formula (1). In the formula (1), R ¹ represents a linear or branched alkyl group or alkylene group having 8 to 24 carbon atoms, preferably 10 to 18 carbon atoms. When the carbon number is small, the detergency is insufficient, and when the carbon number is large, the composition tends to be unstable. If the carbon number is in the above range, sufficient detergency and high stability can be obtained.

A ¹ O and A ² O each independently represent an oxyalkylene group having 2 to 4 carbon atoms.
Furthermore, m and n represent the average repeating number of an oxyalkylene group, are each independently a number of 0 or more, and m + n is an integer of 3-60. When m + n is small, it is unstable, and when m + n is large, the detergency is insufficient. Therefore, m + n is preferably 10-30.

The component (B) is a polyoxyethylene alkyl ether represented by the general formula (2). R ² in the formula (2) represents a linear or branched alkyl group or alkylene group having 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms. When the carbon number is small, the detergency is insufficient, and when the carbon number is large, the composition tends to be unstable. If the carbon number is in the above range, sufficient detergency and high stability can be obtained.

A ³ O represents an oxyethylene group, a represents an average added mole number, and is an integer of 3 to 12. When the average added mole number is small, it is unstable, and when it is large, the detergency is insufficient. Therefore, an integer of 7 to 9 is preferable.

The component (C) is a polyoxyalkylene alkyl ether represented by the general formula (2) excluding the component (B). In the formula (2), R ² represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, preferably 12 to 14 carbon atoms. When the carbon number is small, the detergency is insufficient, and when the carbon number is large, the composition tends to be unstable. If the carbon number is in the above range, sufficient detergency and high stability can be obtained.

A ³ O represents an oxyalkylene group having 2 to 4 carbon atoms, a represents an average added mole number, and is an integer of 3 to 35. When the average added mole number is small, it is unstable, and when it is large, the detergency is insufficient, so an integer of 10 to 20 is preferable.

  Here, the liquid cleaning composition for clothing according to the present invention is also characterized in that it contains the components (A) to (C) in a specific ratio.

  (A) Content of a component is 20 to 35 weight%. (A) Even if there is little or more content of a component, cleaning power is inadequate.

  The content of the component (B) is 1 to 25% by weight. When the content of the component (B) is small, the detergency is insufficient, and when it is large, the component is unstable.

  The content of the component (C) is 1 to 30% by weight. (C) Even if there is little or more content of a component, cleaning power is inadequate.

  The total content of the components (A) to (C) is 22 to 60% by weight. When the total content is small, the detergency is insufficient. When the total content is large, the detergency is unstable. Therefore, the total content is preferably 25 to 55% by weight, and more preferably 40 to 55% by weight.

  Furthermore, in the liquid cleaning composition for clothing according to the present invention, the total amount of the components (A) to (C) is set in the range of 2.0 to 4.0 g in the standard usage amount for 1.5 kg of laundry. You may do it. When the standard use amount is small, the detergency is insufficient, and when the standard use amount is large, the rinsing property is lowered. Therefore, the range of 2.5 to 3.5 g is more preferable.

  In addition, the liquid detergent composition for clothes according to the present invention includes viscosity modifiers such as sodium chloride, magnesium chloride, and sodium acetate, and pH modifiers such as hydrochloric acid, citric acid, and sodium hydroxide, as long as the characteristics are not impaired. A cationic surfactant, an anionic surfactant, an amphoteric surfactant, a solvent, an antiseptic, an antibacterial agent, a deodorant, a fragrance and the like can be blended as necessary.

  Moreover, the manufacturing method of the liquid cleaning composition for clothes concerning this invention is not specifically limited, A well-known normal method can be used suitably. For example, it can be produced by blending each of the above components and sufficiently stirring and mixing them while heating as necessary to dissolve or disperse each component and cooling to an appropriate temperature. Examples of the stirring device include a blade type stirring device that has a shearing force and can uniformly mix the whole.

  Hereinafter, the examples of the liquid detergent composition for clothes according to the present invention and the comparative examples not belonging to the liquid detergent composition for clothes according to the present invention were evaluated from the viewpoint of detergency and appearance stability. Will be described. In addition, this invention is not limited to these Examples, A various change is possible in the range which does not deviate from the technical idea of this invention.

[Examples 1 to 10]
Table 1 shows Examples 1 to 10 of the liquid detergent composition for clothing according to the present invention. Examples 1 to 10 are all liquid detergent compositions containing 50% by weight of surfactant based on the total weight.

  Moreover, viscosity and pH were adjusted by blending appropriate amounts of a viscosity modifier and a pH adjuster. Further, a balance amount of water was blended so that the total amount of the composition was 100% by weight. As the water, ion-exchanged water adjusted to have a calcium chloride concentration of 90 ppm was used. These components were sufficiently stirred and mixed with a stirrer at room temperature to prepare liquid cleaning compositions for clothes of Examples 1 to 10.

[Comparative Examples 1 to 16]
Tables 2 and 3 show Comparative Examples 1 to 16 that do not belong to the liquid cleaning composition for clothing according to the present invention. Comparative Examples 1 to 16 are liquid detergent compositions for clothing containing 50% by weight of surfactant with respect to the total weight, as in the above Examples.
The adjustment conditions are the same as in the example.

[Detergency]
Detergency was evaluated according to JIS K3371. As a cleaning agent, 0.18 g of each sample of Examples 1 to 10 and Comparative Examples 1 to 16 was used. The water used was 0.9 L of ion-exchanged water adjusted so that the calcium chloride concentration was 90 ppm. As the contaminated cloth, five wet artificially contaminated cloths (manufactured by Laundry Science Association) were used and adjusted to 45 g using a bath ratio adjusting cloth. Cotton knitted fabric (cut to 5 cm × 5 cm; Tanigami Shoten) was used as the bath ratio adjusting fabric.

  The test machine used was a stirring type detergency tester designated by JIS K3371 (manufactured by Daiei Kagaku Seiki Seisakusho, Model TM-4). Washing was performed under conditions of a washing temperature of 30 ° C., a rotation speed of 120 ppm, and a washing time of 10 minutes. Subsequently, it was rinsed once for 3 minutes with the same ion exchange water as the water used. After dehydration and drying, the degree of soil removal with respect to the index cleaning agent for determining cleaning power prepared according to JIS K3362 was determined by visual observation by three persons.

The criteria for cleaning power are as follows.
・ If you clearly win, ◎
・ If you win a little, "○"
・ If there is almost no difference-Slightly inferior, "△"
・ If clearly inferior, “×”
The evaluation results regarding the cleaning power of the examples are shown in Table 1, and the evaluation results regarding the cleaning power of the comparative examples are shown in Tables 2 and 3, respectively.

[Appearance stability]
(1) High-temperature cloud point 5 ml of each sample of Examples 1 to 10 and Comparative Examples 1 to 16 was put in a test tube and placed in the inner tube of a low-temperature thermostatic bath, and the temperature was raised from room temperature at a heating rate of 30 ° C./min. I let you. After the sample temperature was raised to 50 ° C., the test tube was taken out every time the sample temperature was raised by 1 ° C., and the sample was visually checked for the presence or absence of cloudiness.

The criteria for determining the hot cloud point are as follows.
・ When maintaining colorless and transparent at 60 ℃ or higher, "◎"
・ When maintaining colorless and transparent at 55 ℃ or more and less than 60 ℃, "○"
・ When maintaining colorless and transparent at 50 ℃ or more and less than 55 ℃, "△"
・ When maintaining colorless and transparent at less than 50 ℃, “×”

(2) Low temperature cloud point The temperature is the same as the high temperature cloud point except that the temperature is lowered from room temperature at a rate of 5 ° C./minute, the sample temperature is lowered to 0 ° C., and the presence or absence of cloudiness is confirmed every time the temperature falls by 1 ° C. evaluated.
The criteria for determining the low temperature cloud point are as follows.
・ When maintaining colorless and transparent at -5 ℃, "◎"
・ When maintaining colorless and transparent at 0 ° C to -4.9 ° C, "○"
・ When maintaining colorless and transparent at less than 0 ℃, “×”
The evaluation results regarding the appearance stability of the examples are shown in Table 1, and the evaluation results regarding the appearance stability of the comparative examples are shown in Tables 2 and 3, respectively.

  As shown to Tables 1-3, it turns out that Examples 1-10 are excellent in the detergency compared with Comparative Examples 1-16. Moreover, in Examples 1-10, phase separation is not recognized in the temperature range of 60 degreeC or more, and it turns out that the external appearance stability as a composition is high.

  Furthermore, when converted from the test conditions for detergency, in Examples 1 to 10, the total amount of components (A) to (C) with respect to 1.5 kg of laundry is 3.0 g. In the conventional concentrated liquid cleaning agent, the amount of the surfactant with respect to 1.5 kg of the laundry is 5.0 to 7.5 g, and the cleaning agent of the present invention has about half the amount of the surfactant but is excellent in cleaning. It can be seen that it has power.

Claims (6)

(A) Polyoxyalkylene alkylamine represented by the following general formula (1)

(In Formula (1), R ¹ represents a linear or branched alkyl group or alkylene group having 8 to 24 carbon atoms, and A ¹ O and A ² O are each independently an oxy group having 2 to 4 carbon atoms. Represents an alkylene group, m and n represent the average number of repetitions of the oxyalkylene group, each independently a number of 0 or more, and m + n is an integer of 3 to 60).
(B) A polyoxyethylene alkyl ether represented by the following general formula (2) (in the formula (2), R ² represents an alkyl group or alkenyl group having 10 to 18 carbon atoms, and A ³ O represents an oxyethylene group. And a represents the average number of moles added and is an integer from 3 to 12.)
(C) A polyoxyalkylene alkyl ether represented by the following general formula (2) excluding the component (B) (in the formula (2), R ² represents an alkyl group or an alkenyl group having 10 to 18 carbon atoms, A ³ O represents an oxyalkylene group having 2 to 4 carbon atoms, a represents an average added mole number, and is an integer of 3 to 35).

The content of the component (A) is 20 to 35% by weight, the content of the component (B) is 1 to 25% by weight, and the content of the component (C) is 1 to 30% by weight. The liquid detergent composition for clothes whose total content of said (A)-(C) component is 22 to 60 weight%. The average added mole number represented by a in the general formula (2) representing the component (B) is 7 to 9 moles,
The liquid cleaning agent for clothes according to claim 1, wherein the alkyl group or alkenyl group represented by R ² in the general formula (2) representing the component (C) has 12 to 14 carbon atoms. Composition. The liquid cleaning composition for clothing according to claim 1 or 2, wherein a total content of the component (A), the component (B), and the component (C) is 25 to 55% by weight.   The liquid for clothing according to any one of claims 1 to 3, wherein a total amount of the components (A) to (C) is in a range of 2.0 to 4.0 g in a standard usage amount for 1.5 kg of laundry. Cleaning composition.   The liquid for clothing according to any one of claims 1 to 3, wherein a total amount of the components (A) to (C) is in a range of 2.5 to 3.5 g in a standard usage amount for 1.5 kg of laundry. Cleaning composition. The liquid cleaning composition for clothing according to any one of claims 1 to 5, wherein a total content of the component (A), the component (B), and the component (C) is 40 to 55% by weight.