JP2010150319A - Liquid detergent composition for drainage pipe - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a detergent composition for a drainage pipe which has high viscosity suitable to be applied to a water supply pipe, is excellent in a stability at low-temperature storage, and further is low in cobwebbing property. <P>SOLUTION: The liquid detergent composition for the drainage pipe contains (a) hypochlorous acid alkaline metal salt, (b) alkaline metal hydroxide, (c) alkyldimethylamine oxide, (d) fatty acid alkaline metal salt and (e) alkylbenzene sulfonate. Total amount of surfactants is 1.5 mass% or more. As a (c) component, (c-1) dodecyldimethylamine oxide and (c-2) tetradecyldimethyl amine oxide are contained, total amount of (c-1) and (c-2) in the (c) component is 80 mass% or more and a mass ratio of (d)/(c-2) is 0.5 to 2. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a liquid detergent composition for drainage pipes.

  Conventionally, many bleaching detergent compositions based on alkali metal hypochlorite have been known to remove stains adhering to hard surfaces such as bathrooms, bathtubs, washstands, kitchens, and their drains. It is widely used for the purpose. Since the bleaching detergent composition as described above is applied to various surfaces such as inclined surfaces and vertical surfaces as well as a hard surface, in order to exhibit excellent bleaching cleaning performance when applied to any surface. In addition, adhesion and staying property to the target dirt is required.

In order to meet such demands, attempts have been made to improve adhesion retention by imparting viscosity to the composition. For example, Patent Document 1 discloses bleaching using a mixture of a saturated C _{8 to} C ₁₈ fatty acid or an alkali metal salt of C _{10 to} C ₁₈ alkyl sarcosine and a specific trialkylamine oxide, and a synthetic detergent of sulfate or sulfonate type. A liquid composition is disclosed. Patent Document 2 uses an alkali metal salt of a fatty acid containing an unsaturated fatty acid having 8 to 20 carbon atoms, a tertiary amine oxide, and a linear alkylbenzene sulfonate having 8 to 20 carbon atoms in the alkyl group portion. A bleach composition was disclosed. Furthermore, Patent Document 3 discloses a drainage pipe cleaning composition containing alkali metal hypochlorite, an alkaline agent and a surfactant and having a specific electrical conductivity. And a combination of palm dimethylamine oxide and sodium alkylbenzene sulfonate.
JP-B 63-33800 JP 2001-107087 A JP 2003-113398 A

  As a method for improving the adhesion retention of the composition, a means for spraying in a foam form with a trigger sprayer is known. However, when cleaning the inside of an elongated drain pipe, a large amount must be sprayed, which is unsuitable. . In addition, attempts have been made to improve adhesion retention by imparting viscosity to the composition, and as a method for imparting viscosity to the composition, a means of blending a polymer-based or inorganic mineral-based thickener is known. However, it is not preferable from the viewpoints of decomposition of hypochlorite and stability of the compounding system at low temperature storage, and it is not practically used at present. Further, as a method for imparting viscosity to the composition, means for blending various surfactants are known, and from the viewpoints of decomposition of hypochlorite and stability of the blending system at low temperature storage, usable interfaces are known. While the types of active agents are limited, efforts have been made to efficiently impart high viscosity with a small amount. However, in these compositions, the container containing the composition is tilted, the composition is poured into the drain pipe, and then the thread is wound when the container is awakened. There existed a subject that it might adhere and have a chemical | medical wound and decoloring.

  Although the bleaching liquid composition described in Patent Document 1 is a thickening system, it has a viscosity at 25 ° C. of 10 to 200 mPa · s, is inferior in adhesion retention, and is filled with a container because of stringiness. When used, the liquid runs out when discharged. Since the bleaching composition described in Patent Document 2 is also sprayed mainly using a dispenser, it has a relatively low viscosity (the viscosity at 25 ° C is preferably 30 to 200 mPa · s) and is sufficient for use in a water distribution pipe. Viscosity is hard to say. Further, Patent Document 2 does not mention anything about the stringiness. Furthermore, the drainage pipe cleaning composition described in Patent Document 3 shows excellent adhesion retention and is said to have a small viscosity change accompanying a temperature change, but at the same time, there is no mention of stringing properties. 0016 describes that when the viscosity exceeds 300 mPa · s, the stability of the system deteriorates, suggesting that a high viscosity is not compatible with quality. In addition, some hypochlorous acid products that are marketed as cleaning compositions for water distribution pipes are said to be thickened, but their ease of use is not necessarily good due to their stringiness. I can't say that.

  An object of the present invention is to provide a cleaning composition for a drain pipe having a high viscosity suitable for application to a water distribution pipe, excellent stability at low temperature storage, and low stringiness.

The present invention
(A) alkali metal hypochlorite [hereinafter referred to as (a) component],
(B) alkali metal hydroxide (hereinafter referred to as component (b)),
(C) alkyldimethylamine oxide (hereinafter referred to as component (c)),
(D) fatty acid or alkali metal salt thereof (hereinafter referred to as (d) component),
(E) containing an alkylbenzene sulfonate (hereinafter referred to as component (e)),
The total amount of the surfactant is 1.5% by mass or more,
(C) As a component,
(C-1) dodecyldimethylamine oxide (hereinafter referred to as component (c-1)) and
(C-2) containing tetradecyldimethylamine oxide (hereinafter referred to as (c-2) component),
The total amount of the component (c-1) and the component (c-2) is 80% by mass or more in the component (c),
The mass ratio of the component (c-2) and the component (d) is (d) / (c-2) = 0.5-2.
The present invention relates to a liquid cleaning composition for drain pipes.

  ADVANTAGE OF THE INVENTION According to this invention, it has the high viscosity suitable for applying to a water pipe, is excellent in stability at the time of low-temperature storage, and also provides the detergent composition for drainage pipes with low stringiness. That is, according to the present invention, it has excellent adhesion and retention on the target surface and stability during low-temperature storage. Further, the container is tilted and the composition is injected into the drain pipe. A liquid detergent composition for drainage pipes with good drainage can be obtained.

  In the present invention, by combining the specific surfactants of the components (c) to (e) at a specific ratio, a high viscosity and excellent stability during low-temperature storage, which are unprecedented remarkable effects, are obtained. In addition, after tilting the container containing the composition and injecting the composition into the drain pipe, a safe liquid detergent composition for the drain pipe can be obtained without draining the thread when the container is raised. It is done.

  Examples of the alkali metal hypochlorite (a) include sodium hypochlorite and potassium hypochlorite, with sodium hypochlorite being particularly preferred. Sodium hypochlorite is mixed with sodium hypochlorite and equimolar sodium chloride in production, but sodium hypochlorite containing a large amount of sodium chloride may impair storage stability. It is preferable to use one with reduced sodium. Specifically, a sodium chloride content of 10 to 60 mol%, preferably 10 to 40 mol% with respect to sodium hypochlorite is suitable. Such sodium hypochlorite with reduced sodium chloride is commercially available as low dietary sodium hypochlorite. 0.5-5 mass% is preferable, as for content of (a) component in the liquid cleaning composition for drainage pipes of this invention, 1-5 mass% is more preferable, and 2-4 mass% is more preferable. From the viewpoint of obtaining a good detergency when the content of the component (a) is 0.5% by mass or more and obtaining a good stability of the alkali metal hypochlorite at 5% by mass or less.

  The component (b) alkali metal hydroxide is a combination of an alkali metal ion and a hydroxy ion present in the liquid detergent composition for drainage pipes, that is, a free alkali and in the case of a combination with another counter ion. Does not apply to this. Examples of the component (b) include sodium hydroxide and potassium hydroxide, and sodium hydroxide is particularly preferable. The liquid detergent composition for drainage pipes of the present invention contains the component (b) as a component for improving the stability of the alkali metal hypochlorite, and the content thereof is 0.6 to 3% by mass. Is preferable, 0.6-2 mass% is more preferable, and 0.8-1.5 mass% is further more preferable. When the content of the component (b) is 0.6% by mass or more, good alkali metal hypochlorite stability is obtained, and when it is 3% by mass or less, the metal material is preferable from the viewpoint of good damage.

  Examples of the alkyl group of the alkyldimethylamine oxide as the component (c) in the liquid detergent composition for drainage pipes of the present invention include those having 8 to 18 carbon atoms, and are preferably linear.

  In the present invention, as component (c), docyldimethylamine oxide as component (c-1) and tetradecyldimethylamine oxide as component (c-2) are contained, and component (c-1) and (c- 2) The total amount of components is 80% by mass or more in component (c), preferably 85% by mass or more, more preferably 90% by mass or more, and still more preferably 95% by mass or more. In addition, like the dimethyl dimethylamine oxide currently used in the Example of patent document 3, the alkyl dimethylamine oxide which has an alkyl composition derived from a coconut oil fatty acid is (c-1) component, and (c-2) normally The total amount of the components is about 60 to 70% by mass and does not satisfy the requirements of the present invention for the component (c). Moreover, even if the usage-amount of palm dimethylamine oxide is increased and the total amount of the (c-1) component of this invention and the (c-2) component is increased, the effect of this invention is demonstrated like the comparative example 5 mentioned later. I can't get it.

  In the present invention, the mass ratio (c-1) / (c-2) of dodecyldimethylamine oxide (c-1) to tetradecyldimethylamine oxide (c-2) is 0.1-2. 5 is preferred.

  Further, the total amount of alkyldimethylamine oxide having an alkyl group having 16 or more carbon atoms is preferably 20% by mass or less, more preferably 10% by mass or less, and more preferably 5% by mass or less in the component (c) from the viewpoint of stringiness. Is more preferable.

  In addition, the total amount of alkyldimethylamine oxide having an alkyl group having 10 or less carbon atoms is preferably 20% by mass or less, more preferably 10% by mass or less, and more preferably 5% by mass or less in the component (c) from the viewpoint of obtaining a suitable viscosity. Is preferred.

  In addition, the content of the component (c) is preferably 0.5 to 2.5% by mass from the viewpoint of high viscosity, storage stability, and low stringiness in the composition, and preferably 0.8 to 2.0. % By mass is more preferable, and 1.0 to 1.6% by mass is more preferable.

  In addition, the content of the component (c-1) is preferably 0.1 to 1.2% by mass from the viewpoint of high viscosity, storage stability, and low stringiness in the composition. 0.0 mass% is more preferable, and 0.2 to 0.8 mass% is more preferable.

  Further, the content of the component (c-2) is preferably 0.2 to 1.6% by mass from the viewpoint of high viscosity, storage stability, and low stringiness in the composition, and 0.3 to 1 .4% by mass is more preferable, and 0.4 to 1.2% by mass is more preferable.

  (D) As a fatty acid or its alkali metal salt of a component, a C8-C18 fatty acid, its sodium salt, potassium salt, etc. are mentioned. Of these, fatty acids having 10 to 16 carbon atoms are preferable, and fatty acids having 10 to 14 carbon atoms are more preferable. In addition, any of straight-chain fatty acid, branched-chain fatty acid, saturated fatty acid, and unsaturated fatty acid may be used, but it is preferable that the alkyl group has a distribution in terms of low-temperature stability. The most preferable fatty acid or alkali metal salt thereof is one in which the content of fatty acid having 12 carbon atoms or alkali metal salt thereof occupies 70% by mass in the total amount of component (d). Is preferable because of its good stability.

  In the present invention, the mass ratio of the component (c-2) and the component (d) contained in the component (c) is (d) / (c-2) = 0.5-2, 2, more preferably 1.2-2. This range of mass ratio is preferable because good stringiness can be obtained without twisting the thread during use.

  In addition, the content of the component (d) is preferably 0.2 to 1.2% by mass from the viewpoint of high viscosity, storage stability, and low stringiness in the composition, and is preferably 0.4 to 1.0. % By mass is more preferable, and 0.6 to 0.8% by mass is more preferable.

  The alkylbenzene sulfonate of component (e) is preferably one having 8 to 18 carbon atoms in the alkyl group. The salt is preferably an alkali metal salt such as sodium or potassium. The content of the component (e) is preferably 0.1 to 0.35% by mass, and preferably 0.1 to 0.3% by mass in the composition from the viewpoint of the viscosity of the composition and stability at low temperature storage. More preferably, 0.15-0.25 mass% is further more preferable.

  Moreover, in this invention, when content of (e) component is 0.1 mass% or more and less than 0.2 mass%, from a viewpoint that stability at the time of a viscosity and low-temperature storage is favorable, (c-1) The suitable mass ratio of the component dodecyldimethylamine oxide and the component (c-2) tetradecyldimethylamine oxide is preferably (c-1) / (c-2) = 0.4 to 1.2. 5 to 1 is more preferable. Moreover, when content of (e) component is 0.2-0.35 mass%, from a viewpoint that a viscosity and stability at the time of low-temperature storage are favorable, (c-1) component dodecyl dimethylamine oxide and (C-2) As for the suitable mass ratio of the tetradecyl dimethylamine oxide of a component, (c-1) / (c-2) = 0.1-2.5 are preferable, and 0.2-2 are more preferable.

  In the liquid detergent composition for drainage pipes of the present invention, the total amount of the surfactants such as the component (c), the component (d), the component (e) and the like is 1.5% by mass or more, and 1.5 to 4% by mass. Is preferable, 1.5-3 mass% is more preferable, and 2-3 mass% is further more preferable. This range is preferable because high viscosity and good alkali metal hypochlorite salt stability can be obtained. In addition, as the surfactant other than the component (c), the component (d) and the component (e), an alkyl sulfate ester salt, a polyoxyethylene alkyl ether sulfate ester salt, an alkane sulfonate, an alkyl trimethyl ammonium salt, Examples thereof include alkyldimethylbenzylammonium salt, alkyldimethylacetic acid betaine, and alkyldimethylsulfobetaine.

  The liquid detergent composition for drainage pipes of the present invention can contain a fragrance as another optional component. As examples of perfume ingredients that can be blended into hypochlorite systems, reference can be made to JP-A-50-74581 and JP-A-62-205200. Perfume may be used. Although a fragrance | flavor is normally contained in 0.001-0.5 mass% in a composition, since there exists a possibility of impairing stability, a caution is required for a compounding component and content.

  The balance of the liquid detergent composition for drainage pipes of the present invention is water, and ion-exchanged water or distilled water from which metal ions and the like that are present in a trace amount are removed is preferable in terms of storage stability. The water content is preferably 80 to 98% by mass, more preferably 90 to 98% by mass in the composition from the viewpoint of storage stability. Moreover, it is preferable from the point of storage stability and a washing | cleaning effect to adjust pH at 25 degreeC of a composition to 12.5-13.8.

  The liquid detergent composition for drainage pipes of the present invention is a condition of 20 ° C., rotation speed 60 rpm, 60 seconds using a B-type viscometer from the viewpoint of adhesion and retention to the drainage pipe and the stability of pouring from the container. Is preferably in the range of 400 to 1500 mPa · s, more preferably in the range of 450 to 1200 mPa · s, and still more preferably in the range of 450 to 1000 mPa · s.

  Since the liquid detergent composition for drainage pipes of the present invention has such a high viscosity, it is excellent even when the hard surface applied is applied not only to a horizontal plane but also to various surfaces such as an inclined plane and a vertical plane. Bleach cleaning performance can be demonstrated.

  In order to apply the liquid cleaning composition for a drain pipe of the present invention to a drain pipe, a method of pouring directly from a container filled with the composition can be mentioned. The container preferably has a structure that leads to a composition in consideration of ease of pouring, or a diameter that allows a sufficient amount of the composition to be poured in a certain time. Examples of the drain pipe include those installed in kitchens, bathrooms, and washstands. Usually, in order to prevent clogging of the drain pipe, a quantity of 40 mL to 200 mL at a time is required for one drain outlet, and in order to eliminate clogging of the drain pipe, this quantity is 100 mL to 600 mL at a time. It is preferable to apply the liquid detergent composition for drain pipes of the invention.

Example 1
(A) 3% by mass of sodium hypochlorite, (b) 1.3% by mass of sodium hydroxide, (c-1) 0.7% by mass of dodecyldimethylamine oxide, (c-2) tetradecyldimethylamine oxide 0 0.5% by mass, (d) 0.8% by mass of fatty acid (Lunac L-70 (manufactured by Kao)), (e) 0.2% by mass of sodium alkylbenzenesulfonate, and 0.35% by mass of sodium silicate Prepare a liquid detergent composition for drainage pipes made of ion-exchanged water (pH at 25 ° C. is 13.4), and use a B-type viscometer (manufactured by TOKIMEC) to adjust the viscosity under the conditions of 20 ° C., 60 rpm, 60 seconds. It was 600 mPa · s when measured. Moreover, when the external appearance after 28-day storage at -5 degreeC was confirmed, it was a pale yellow transparent uniform liquid like the initial state. Furthermore, using a dropper (transfer pipette) (Clinical Instruments Co., Ltd., clinical test equipment plastic spoid, 3 ml) in an environment of 25 ° C., drop the composition with one finger at intervals of about 1 second. As a result of taking a photograph and dropping the composition, it did not show stringiness and had good liquid breakage. On the other hand, (1) Pipe unish [Johnson Co., Ltd.], (2) Pipeman smooth gel [Lion Co.], (3) Rich pipeman [Lion Co., Ltd.] When the stringing property was evaluated under the condition of 25 ° C., all the strings were combed. The stringability described here is that stringiness is formed when a droplet body is separated from the tip of the pipette and a thread-like material is formed between the droplet body and the tip of the pipette.

Example 2
The liquid detergent composition for drainage pipes shown in Table 1 was prepared. These compositions were evaluated for viscosity, storage stability, and stringiness by the following methods. The results are shown in Table 1. In addition, as for the liquid cleaning agent composition for drainage pipes in a table | surface, all had pH of 13.2-13.5 in 25 degreeC.

<Measurement of viscosity>
About the composition of Table 1, it measured on 20 degreeC, 60 rpm, and 60 second conditions using the B-type viscosity meter (made by TOKIMEC).

  In addition, it is preferable that the viscosity is in the range of 400 to 1500 mPa · s from the viewpoint of adhesion retention to the drain pipe and the stability of pouring from the container.

  In addition, the more suitable composition is in the range of 400 to 1500 mPa · s, the more excellent the bleach cleaning even when the applied hard surface is applied to various surfaces such as inclined surfaces and vertical surfaces as well as horizontal surfaces. It means that performance can be demonstrated.

<Storage stability evaluation>
100 mL of the composition shown in Table 1 was stored in a polypropylene container (capacity: 120 mL), covered, and allowed to stand at −5 ° C. for a maximum of 28 days, and changes in the appearance of the composition were visually evaluated over time according to the following criteria. The compositions in the table were all uniformly transparent immediately after preparation.
(Evaluation criteria)
When stored for 4:28 days, no cloudiness or separation occurs, and a uniform and transparent liquid state can be maintained.
3: It becomes a non-uniform liquid such as white turbidity, separation, or formation of a precipitate after storage for 15 to 28 days.
2: It becomes a non-uniform liquid such as white turbidity, separation, or generation of a precipitate after storage for 3 to 14 days.
It becomes a non-uniform liquid such as white turbidity, separation, or formation of a precipitate after storage for 1: 1 to 2 days.

<Evaluation of stringiness>
Using the dropper (transfer pipette) (manufactured by Clinical Instruments Co., Ltd., clinical test equipment plastic spoid, 3 ml) for the composition shown in Table 1, take a dropper with your finger at the strength of dropping one drop at approximately one second intervals. The stringiness when the composition was dropped was evaluated according to the following criteria. In addition, the difference which can be recognized clearly by visual evaluation arises between the following evaluation criteria.
(Evaluation criteria)
4: Do not scoop the thread.
3: Spun the yarn for 0.2 to 0.5 seconds.
2: A 0.5-1 second yarn is wound.
The yarn is spun for more than 1: 1 seconds.

(Note) The components in the table are as follows.
・ Sodium alkylbenzene sulfonate: Neoperex G-25 (manufactured by Kao)
・ Fatty acid: LUNAC L-70 (manufactured by Kao)

Claims (2)

(A) alkali metal hypochlorite,
(B) an alkali metal hydroxide,
(C) alkyldimethylamine oxide,
(D) a fatty acid or an alkali metal salt thereof,
(E) contains an alkylbenzene sulfonate,
The total amount of the surfactant is 1.5% by mass or more,
(C)
(C-1) dodecyldimethylamine oxide and
(C-2) contains tetradecyldimethylamine oxide,
The total amount of (c-1) and (c-2) is 80% by mass or more in (c),
The mass ratio of (c-2) and (d) is (d) / (c-2) = 0.5-2.
Liquid cleaning composition for drain pipes. The liquid detergent composition for drainage pipes according to claim 1, wherein the viscosity measured using a B-type viscometer under the conditions of 20 ° C, 60 rpm and 60 seconds is in the range of 400 to 1500 mPa · s.