JP2017088555A - Detergent composition for pump foamer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a detergent composition for a pump foamer that further improves foam quality and low temperature stability and is also excellent in detergency.SOLUTION: The present invention relates to the detergent composition discharged with a former container, containing (a) lauryldimethylaminoacetic acid betaine, and (b) 4 to 15 mass% of a higher fatty acid soap formed from C5-25 fatty acid, wherein the C5-25 fatty acid contains (b-1) 30 to 80 mass% of lauric acid, based on the total amount of the fatty acid, (b-2) 5 to 30 mass% of myristic acid, and (b-3) 5 to 35 mass% of at least one selected from palmitic acid and stearic acid, and the ratio [(a)/(b)] between the compounding amount of (a) the lauryldimethylaminoacetic acid betaine and the compounding amount of (b) the higher fatty acid soap is in the range of 0.4 to 1.5.SELECTED DRAWING: None

Description

  The present invention relates to a cleaning composition that is accommodated in a non-gas type foam discharge container having a porous film such as a pump former, and is discharged in the form of foam through the porous film at the time of use. More specifically, the present invention relates to a cleaning composition for a pump former that is excellent in foam persistence and foam elasticity, has good low-temperature stability, and does not cause clogging.

  There is known a liquid detergent composition that is contained in a non-gas type foam discharge container such as a pump former and discharged from the container in a foam state when used. This type of cleaning composition is mixed with air and discharged in the form of foam when passing through the porous membrane provided in the container. However, although higher fatty acid soaps that are widely used as cleaning components are excellent in foaming properties and detergency, long chain higher fatty acid salts having more than 12 carbon atoms cause crystal precipitation at a low temperature, and the porous film of the pump former There was a problem of causing clogging.

  Patent Document 1 does not contain a higher fatty acid soap as a cleaning component, and contains (a) a short chain length acyltaurine salt, (b) an amphoteric surfactant, and (c) a cationized starch. There is disclosed a liquid detergent composition for a pump former that is free from clogging, stably obtains a creamy foam quality even at a low temperature, and has a conditioning effect.

  In the example using the higher fatty acid soap as the cleaning component, the blending amount of the ionic surfactant (90% by mass of the higher fatty acid soap) is suppressed to 2 to 5% by mass, and the polyvalent amount of 20 to 60% by mass is controlled. There is a cleaning composition for pump formers containing alcohol (including propylene glycol of less than 20% by mass) (Patent Document 2). The cleaning composition of Patent Document 2 is characterized by not only excellent foam quality and low-temperature stability, but also can be easily washed away with a small amount of water.

JP 2009-292969 A JP 2014-210720 A

  The present invention further improves the above-described conventional technology, exhibits a sufficient cleaning effect without suppressing the blending amount of the higher fatty acid soap, and has stability that does not cause clogging due to crystal precipitation even when stored at a low temperature. It is an object of the present invention to provide a cleaning composition for a pump former that can obtain a foam having excellent durability and elasticity.

  In order to solve the above-mentioned problems, the present inventors have conducted intensive research, and as a result, blended high-grade fatty acid soaps having different chain lengths in a predetermined ratio so as to have a foam quality excellent in sustainability and elasticity. The inventors have found that it is possible to obtain a cleaning composition that does not clog even at low temperatures, and have completed the present invention.

That is, the present invention
(A) lauryldimethylaminoacetic acid betaine;
(B) 4 to 15% by mass of a higher fatty acid soap formed from a fatty acid having 5 to 25 carbon atoms;
A cleaning composition discharged in a former container containing
The fatty acid having 5 to 25 carbon atoms is
(B-1) 30 to 80% by mass of lauric acid based on the total weight of fatty acids forming the higher fatty acid soap,
(B-2) 5-30 mass% of myristic acid with respect to the total weight of fatty acids forming the higher fatty acid soap, and (b-3) 5-35 mass% with respect to the total weight of fatty acids forming the higher fatty acid soap. Including at least one selected from palmitic acid and stearic acid,
The ratio [(a) / (b)] of the blending amount of the (a) lauryldimethylaminoacetic acid betaine and the blending amount of the (b) higher fatty acid soap is in the range of 0.4 to 1.5. A cleaning composition is provided.

The cleaning composition of the present invention has good foam quality with excellent foam persistence, high foam elasticity, excellent low-temperature stability, and causes clogging of the pump former even when stored at low temperatures. Absent.
As used herein, “foam persistence” means the property that the foam of the detergent discharged from the former container maintains the foam shape without being immediately crushed when applied to the skin and acclimatized. The term “foam elasticity” means that the foam of the cleaning agent discharged from the former container has a moist feeling with an appropriate elasticity.

Hereinafter, the present invention will be described in detail.
(A) Lauryldimethylaminoacetic acid betaine Lauryldimethylaminoacetic acid betaine (also referred to as N-lauryldimethylaminoacetic acid betaine) used in the present invention is a compound having a structure represented by the following formula (1).
^{_{C 12 H 25 -N + (CH}} 3) 2 -CH 2 COO - ... (1)

  The blending amount of lauryldimethylaminoacetic acid betaine in the cleaning composition of the present invention is determined based on the blending amount of the higher fatty acid soap described later, but is usually 2 to 20% by mass, preferably 2.5 to 18% by mass. %, More preferably 3 to 15% by mass, but not limited thereto, the range included in the above range, for example, 2 to 9% by mass, 3 to 8% by mass, or 4 to 7% by mass, etc. It can also be.

(B) Higher fatty acid soap The cleaning composition of the present invention contains a higher fatty acid soap as a cleaning component. The higher fatty acid soap in the present invention is formed from a salt of a fatty acid anion having 5 to 25 carbon atoms and a counter cation.
The fatty acid having 5 to 25 carbon atoms is a carboxylic acid having a structure in which a carboxyl group is bonded to a linear or branched saturated or unsaturated monovalent hydrocarbon group such as an alkyl group or an alkylene group, The hydrocarbon group may be optionally substituted with a hydroxyl group or the like.

  Examples of fatty acids having 5 to 25 carbon atoms include caproic acid, heptanoic acid, caprylic acid, pelargonic acid, capric acid, undecanoic acid, lauric acid, caproleic acid, undecylenic acid, lauroleic acid, 2-ethylbutanoic acid, isopentanoic acid, 2-ethylpentanoic acid, 2-ethylhexanoic acid, isononanoic acid, 3,5,5-trimethylhexanoic acid, tridecanoic acid, tetramethylnonanoic acid, myristic acid, pentadecanoic acid, palmitic acid, stearic acid, arachidic acid, behenic acid , Lignoceric acid, serotic acid, myristic acid, palmitoleic acid, oleic acid, elaidic acid, gondoic acid, erucic acid, cerakoleic acid, linoleic acid, linoelaidic acid, linolenic acid, arachidonic acid, 2-hexyldecanoic acid, isostearic acid, 12-hydroxy steari Acid, coconut oil fatty acid, hardened coconut oil fatty acid, palm oil fatty acid, hydrogenated palm oil fatty acids, palm kernel oil fatty acid, hardened palm kernel oil fatty acid, tallow fatty acid, hardened tallow fatty acid, and the like.

  In the present invention, among fatty acids having 5 to 25 carbon atoms, higher fatty acids formed from linear saturated fatty acids having 8 to 20 carbon atoms or 12 to 18 carbon atoms are preferably used. That is, the fatty acid soap used in the present invention includes an embodiment that does not include a fatty acid soap formed from a branched chain fatty acid or an unsaturated fatty acid.

  The detergent composition of the present invention comprises (b-1) lauric acid and (b-2) myristic acid and (b-3) a linear saturated fatty acid containing at least one selected from palmitic acid and stearic acid. Contains higher fatty acid soaps that are formed.

(B-1) Lauric acid The higher fatty acid soap in the present invention contains a fatty acid soap formed from lauric acid in an amount of 30 to 80% by mass based on the total weight of fatty acids forming the higher fatty acid soap.
(B-2) Myristic acid The higher fatty acid soap in this invention contains 5-30 mass% of fatty acid soap formed from lauric acid with respect to the total weight of fatty acids forming the higher fatty acid soap.

(B-3) Palmitic acid and stearic acid The higher fatty acid soap in the present invention is a fatty acid soap formed of at least one selected from palmitic acid and stearic acid, and is 5 relative to the total weight of fatty acids forming the higher fatty acid soap. Contains ~ 35% by mass. If the total amount of palmitic acid and stearic acid exceeds 35% by mass, sufficient low temperature stability may not be obtained. When used in an environment where low temperature stability is particularly required, such as in cold regions in winter, the blending amount of palmitic acid and / or stearic acid is preferably 5 to 30% by mass, more preferably 5 to 25% by mass. %, More preferably 5 to 20% by mass.

  The at least one selected from palmitic acid and stearic acid includes an embodiment containing only one of palmitic acid or stearic acid and an embodiment containing both palmitic acid and stearic acid. In an embodiment containing both palmitic acid and stearic acid, the blending ratio of palmitic acid and stearic acid [palmitic acid / stearic acid] is preferably in the range of 0.4 to 2.5. This numerical range includes an arbitrary range included in 0.4 to 2.5 (for example, 0.4 to 2.0 or 1.0 to 2.0) and all numerical values included in the range.

In addition to lauric acid (carbon number 12) and myristic acid (carbon number 14), the detergent composition of the present invention contains palmitic acid (carbon number 16) and / or stearic acid (carbon number 18). In addition, a foam having good sustainability can be obtained and the low temperature stability is also excellent.
In general, in view of the fact that crystallization is likely to occur when the chain length (carbon number) of higher fatty acids increases, palmitic acid having a large number of carbons in addition to lauric acid and myristic acid that have been conventionally used and The improvement in low-temperature stability by adding stearic acid is an effect that cannot be predicted by those skilled in the art.

  The counter cation for neutralizing the higher fatty acid anion is preferably an alkali metal cation, particularly a potassium cation. The (a) higher fatty acid soap in the present invention does not contain fatty acid arginine salts and methyl taurine salts.

  The blending amount of (b) higher fatty acid soap in the cleaning composition of the present invention is 4 to 15% by mass, preferably 5 to 12% by mass, more preferably 5 to 10% by mass, and further preferably 6 to 8% by mass. %. Here, the compounding quantity of a higher fatty acid soap means the total compounding quantity of a higher fatty acid and a neutralizing agent (for example, potassium hydroxide).

  In the cleaning composition of the present invention, the ratio [(a) / (b)] of (a) the blending amount of lauryldimethylaminoacetic acid betaine and (b) the blending amount of higher fatty acid soap is 0.4 to 1. The blending ratio is more preferably within the range of 0.5 to 1.2. When the blending ratio is less than 0.4, sufficient low temperature stability cannot be obtained.

(C) Polyhydric alcohol The detergent composition of the present invention preferably contains a polyhydric alcohol in addition to the essential components (a) lauryldimethylaminoacetic acid betaine and (b) higher fatty acid soap.
The polyhydric alcohol that can be blended can be selected from those usually blended in cosmetics and the like, such as glycerin, propylene glycol, dipropylene glycol, 1,3-butylene glycol, ethylene glycol, polyethylene glycol, sorbitol, and the like. Is mentioned.

  Although the compounding quantity of a polyhydric alcohol is not specifically limited, Usually, 10-50 mass%, Preferably it is 20-50 mass%, More preferably, it is 25-40 mass%.

  Among polyhydric alcohols, blending polyhydric alcohols with IOB = 3 to 4 is preferable because the elasticity of bubbles discharged from the former can be improved. Examples of the polyhydric alcohol with IOB = 3 to 4 include diglycerin and propylene glycol.

  The blending amount of the polyhydric alcohol with IOB = 3 to 4 is usually 0.1 to 10% by mass, preferably 0.5 to 8% by mass, more preferably 1 to 5% by mass with respect to the total weight of the composition. is there.

  The cleaning composition of the present invention may contain other optional components usually used in the liquid cleaning composition within a range that does not impair the effects of the present invention. Oils, silicones, lower or higher alcohols, lanolin derivatives, protein derivatives, various drugs, bactericides, preservatives, pH adjusters, antioxidants, sequestering agents, chelating agents, animal and plant extracts or their derivatives, pigments Fragrances, pigments, organic or inorganic powders, clay minerals and the like. These 1 type (s) or 2 or more types can be selected arbitrarily and can be mix | blended.

  The cleaning composition of the present invention is not limited. For example, the viscosity measured at a temperature of 30 ° C. using a B-type rotational viscometer is 40 mPa · s or less, preferably 30 mPa · s or less, more preferably 20 mPa · s. Provided as a low viscosity liquid to the extent.

  The cleaning composition of the present invention can be produced according to a conventional method using the essential components and optional components described above.

  The prepared cleaning composition of the present invention is accommodated in a non-gas type foam discharge container having a porous film. The non-gas type foam discharge container used in the present invention is of any known type as long as a certain amount of liquid detergent composition is mixed with a certain amount of air and discharged from the container at the time of use as a foam state. But you can. Specifically, for example, a squeeze foamer that is used by pressing the torso of a soft container with fingers, a pump former that is used by pressing the head of a cap equipped with a pump mechanism with fingers, and the like. . In use, the liquid detergent composition in the container is discharged from the container discharge port as a foam by passing a mixture obtained by mixing the liquid detergent composition with air through the porous membrane (one to a plurality of sheets). It is like that.

  Examples of the porous film of the pump former container include a sponge, a sintered body, and a net, but a thin net is preferable from the viewpoint of usability. A coarseness of about 30 to 400 mesh is preferably used. In the cleaning composition of the present invention, it is preferable to use a container having two porous membranes. Even if one porous membrane is 200 mesh and the other porous membrane is 305 mesh, it is clogged. And good foam quality can be obtained.

  The cleaning composition of the present invention is suitably provided in the form of a facial cleanser, body soap, hand soap, shampoo and the like as a cleaning agent for hair and skin contained in a pump former container.

Hereinafter, the present invention will be described in more detail with reference to specific examples, but these do not limit the technical scope of the present invention.
In addition, the compounding quantity in a following example etc. is the mass% unless it mentions specially.

A detergent was prepared according to a conventional method with the composition described in each example of the following table.
About the cleaning agent obtained in each case, the following items were evaluated according to the following criteria.
(1) Stability at low temperature After the prepared detergent composition is filled in a vial of hard glass and stored in an evaluation room maintained at each temperature (-10 to 5 ° C) for 24 hours and one week, the detergent The low temperature stability of the composition was visually observed and evaluated according to the following evaluation criteria.
○: Good (no deposits / precipitates, no change in appearance, no possibility of clogging)
×: Defect (There are deposits and deposits, which causes quality problems. Clogging may occur)
If it is a normal use environment, if it is evaluated as “◯” at the end of storage for at least −5 ° C. to + 5 ° C. for 24 hours and + 5 ° C. for 1 week, it has sufficient characteristics that can be provided as a product. Yes.

(2) Usability test Foam quality (foam durability, foam elasticity, when the detergent composition of each example contained in a pump former container (mesh 200 × 305) is discharged in the form of foam and actually used. ) Was evaluated by the expert panel. Evaluation was performed according to the following criteria.
[Evaluation criteria]
A: Very good B: Excellent C: Inferior In addition, the thing whose evaluation result is A or B is equipped with the characteristic sufficient to provide as goods.

(3) Viscosity measurement About the detergent composition prepared in each example, the viscosity at 30 ° C. was measured using a B-type viscometer (rotor No. 1, 60 rpm). The measurement results are shown in each table.

  From the results shown in Tables 1 to 4 above, the present invention contains higher fatty acids containing lauric acid and myristic acid, and palmitic acid and / or stearic acid at a predetermined ratio of the present invention, and N-lauryldimethylaminoacetic acid betaine. The cleaning compositions of Examples contained at a predetermined ratio are excellent in low-temperature stability and do not cause clogging of the former container, and are excellent in the sustainability of the generated foam. On the other hand, Comparative Example 1 containing neither palmitic acid nor stearic acid has poor foam persistence. The blending ratio of the fatty acid does not satisfy the requirements of the present invention (the total blending amount of palmitic acid and stearic acid exceeds 35% by mass) and Comparative Examples 2 to 4, and blending of N-lauryldimethylaminoacetic acid betaine and higher fatty acid soap In Comparative Example 5 in which the amount ratio is out of the range (0.4 to 1.5) of the present invention, sufficient low temperature stability was not obtained.

  (B) Comparative Example 6 in which the blending amount of the higher fatty acid soap is less than 4% by mass is inferior in the persistence of the foam as in Comparative Example 1, and Comparative Example 7 in which the viscosity of the composition exceeds 30 mPa · s is It was difficult to discharge with a mer. Further, Comparative Example 8 in which N-lauryldimethylaminoacetic acid betaine was substituted with cocamidopropyl betaine (coconut oil fatty acid amidopropyl betaine) was inferior in low-temperature stability. Moreover, when compared with Example 9 containing 30% by mass or more of palmitic acid and stearic acid as the fatty acids forming the higher fatty acid soap, Examples 4 and 6-8 having a blending amount of 20-30% by mass, In Examples 2, 3 and 5 which are 20% by mass or less, it was confirmed that precipitation or the like did not occur even under severer low temperature conditions, and that it was particularly suitable for use in cold regions in winter.

  According to the results shown in Table 5, diglycerin (IOB = 3.50), which is a polyhydric alcohol with IOB = 3 to 4, is not essential for obtaining the effects of the present invention (Example 12). It was confirmed that the blending of polyhydric alcohols with IOB = 3-4 improves the elasticity of the foam discharged from the former (Examples 13 and 14).

Claims (6)

(A) lauryldimethylaminoacetic acid betaine;
(B) 4 to 15% by mass of a higher fatty acid soap formed from a fatty acid having 5 to 25 carbon atoms;
A cleaning composition discharged in a former container containing
The fatty acid having 5 to 25 carbon atoms is
(B-1) 30 to 80% by mass of lauric acid based on the total weight of fatty acids forming the higher fatty acid soap,
(B-2) 5-30 mass% of myristic acid with respect to the total weight of fatty acids forming the higher fatty acid soap, and (b-3) 5-35 mass% with respect to the total weight of fatty acids forming the higher fatty acid soap. Including at least one selected from palmitic acid and stearic acid,
The ratio [(a) / (b)] of the blending amount of the (a) lauryldimethylaminoacetic acid betaine and the blending amount of the (b) higher fatty acid soap is in the range of 0.4 to 1.5. A cleaning composition. The cleaning composition according to claim 1, wherein (b-3) contains both palmitic acid and stearic acid. The cleaning composition according to claim 2, wherein the blending amount ratio of palmitic acid and stearic acid [palmitic acid / stearic acid] is within a range of 0.4 to 2.5. (C) The cleaning composition according to any one of claims 1 to 3, further comprising a polyhydric alcohol. The cleaning composition according to claim 4, wherein the (c) polyhydric alcohol includes a polyhydric alcohol having IOB = 3 to 4. The cleaning composition according to claim 5, wherein the polyhydric alcohol having IOB = 3 to 4 is diglycerin.