JP7256692B2 - Aerosol products for drain cleaning - Google Patents

Description

TECHNICAL FIELD The present invention relates to an aerosol product for cleaning drainpipes suitable for removing foreign matter that causes clogging in drainpipes.

For example, detergents containing surfactants are used for washing drain pipes such as washbasins. As such a cleaning agent, an aerosol-type foaming cleaning agent having a stock solution containing a surfactant, an inorganic alkaline agent and glycols, and a propellant containing a liquefied gas or a compressed gas has been proposed (Patent Document 1st prize). According to this aerosol-type foam cleaning agent, it is possible to remove oily dirt and slime even from a drain pipe equipped with an S-type trap.
However, in the above-mentioned aerosol-type foam cleaning agent, it is difficult to remove foreign matter such as hair that causes clogging in the S-shaped trap of the drain pipe.

In addition, as a means for removing foreign matter that causes clogging in the drain pipe, a cylinder having a cap fitted to the upper end, a piston reciprocably inserted into the cylinder, a tip end connected to the piston, and a base end a piston rod protruding from the cap, a handle attached to the base end of the piston rod, and a bellows-structured cylindrical body detachably attached to the lower end of the cylinder, the tip of which is in close contact with the periphery of the drain port. is known (see Patent Document 2).
However, in such a manual cleaning pump, depending on the degree of clogging, it is necessary to manually move the piston with a considerably large force, and it takes a considerably long time to remove the foreign matter. There's a problem.

Japanese Patent Application Laid-Open No. 2008-260788 Utility Model Registration No. 3143902

SUMMARY OF THE INVENTION The present invention has been made based on the above circumstances, and its object is to provide an aerosol product for cleaning drain pipes that can easily remove foreign matter that causes clogging in drain pipes. be.

The aerosol product for cleaning drain pipes of the present invention comprises 80 to 99.5% by mass of an aqueous stock solution containing water and a surfactant, and 0.5 to 20% by mass of a propellant containing a liquefied gas and/or a compressed gas. A cleaning aerosol composition consisting of is filled in an aerosol container equipped with a valve and an actuator,
The liquefied gas is liquefied petroleum gas (LPG), dimethyl ether, 1,1,1,2-tetrafluoroethane, 1,1-difluoroethane , or trans-1,3,3,3-tetrafluoropropene ( HFO1234ze ) ,
an ejection force of 1.0 gf or more when the cleaning aerosol composition is ejected from the actuator;
It forms foam with a foam density of 0.35 g/cm ³ or less, and is characterized by being used to remove foreign substances that cause clogging in drain pipes.

Further, in the drain pipe cleaning aerosol product of the present invention, the actuator is capable of injecting the cleaning aerosol composition into the drain pipe while being in close contact with the periphery of the drain port so as to close the drain port. is preferred.

In addition, in the aerosol product for cleaning drain pipes of the present invention, the aqueous undiluted solution preferably contains a cleaning agent.

According to the drain cleaning aerosol product of the present invention, the propellant contains liquefied gas and/or compressed gas, and the liquefied gas is liquefied petroleum gas (LPG), dimethyl ether, 1,1,1,2 - Either tetrafluoroethane, 1,1-difluoroethane , or trans-1,3,3,3-tetrafluoropropene (HFO1234ze ) , and the injection force when injected from the actuator is 1.0 gf or more. Since it forms foam with a foam density of 0.35 g/cm ³ or less, it can easily remove foreign matter that causes clogging in drain pipes.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory cross-sectional view showing a configuration of an example of a valve that can be applied to an aerosol product for cleaning drain pipes of the present invention, together with an aerosol container. 1 is an external view showing an example of an actuator that can be applied to the aerosol product for cleaning drainpipes of the present invention. FIG. FIG. 4 is an explanatory diagram showing a drain pipe having an S-type trap used in evaluation of Examples.

The aerosol product for cleaning drain pipes of the present invention will be described below.
The aerosol product for cleaning drain pipes of the present invention is obtained by filling an aerosol container equipped with a valve and an actuator with a cleaning aerosol composition comprising an aqueous undiluted solution containing water and a surfactant, and a propellant. and forms foam when the cleaning aerosol composition is sprayed from the actuator. The aerosol product for cleaning drain pipes of the present invention can be suitably used to remove foreign matter that causes clogging in drain pipes.

[Aqueous stock solution]
Anionic surfactants, nonionic surfactants, cationic surfactants and amphoteric surfactants can be used as surfactants in the aqueous concentrate.
Specific examples of anionic surfactants include polyoxyethylene alkyl ether sulfates such as sodium laureth sulfate, alkyl sulfates such as sodium lauryl sulfate, polyoxyethylene alkyl ether acetates, triethanolamine stearate and palmitic acid. fatty acid salts such as potassium;
Specific examples of nonionic surfactants include alkyl polyglucosides such as decyl glucoside, polyglycerin fatty acid esters such as polyglyceryl-10 laurate, polyoxyethylene alkyl ethers such as ceteth-20, and alkyl alkanolamides such as cocamide DEA. etc.
Specific examples of cationic surfactants include alkyltrimethylammonium chlorides such as lauryltrimethylammonium chloride and dialkyldimethylammonium chlorides such as dialkyl(C12-C18)dimethylammonium chloride.
Specific examples of amphoteric surfactants include alkyldimethylamine oxides such as lauryldimethylamine oxide and alkylamidopropylbetaines such as coconut oil fatty acid amidopropylbetaine.
These surfactants can be used alone or in combination of two or more.

The content of the surfactant in the aqueous concentrate is preferably 0.05 to 25% by mass, more preferably 0.1 to 20% by mass, still more preferably 0.1 to 15% by mass. If the content of the surfactant is too small, a sufficient foam density may not be obtained, and the intended effects may not be obtained. On the other hand, if the content of the surfactant is too high, foam removal may become poor, and depending on the type of drain pipe, there is a risk of having an adverse effect.

The aqueous stock solution contains water and a surfactant as essential components, but may contain other components as needed.
As such other component, it is preferable to use a detergent. Specific examples of detergents include potassium cocoylglycine, triethanolamine cocoylglutamate, sodium bicarbonate, and citric acid.

Other ingredients other than detergents include rheology modifiers such as ethanol, isopropyl alcohol and glycerin, thickeners such as hydroxyethyl cellulose, pH adjusters such as sodium benzoate, and neutralizers such as triethanolamine and potassium hydroxide. agents, alkaline agents such as monoethanolamine, chelating agents such as EDTA-4Na and EDTA-2Na, disinfectants such as isopropylmethylphenol, cleaning aid solvents, deodorants, fragrances, rust inhibitors, antiseptics, coating agents , dyes, insect repellents, insecticides, oxidizing agents, reducing agents, and the like can be used.
These other components can be used alone or in combination of two or more.

The aqueous stock solution preferably has a viscosity of 5000 mPa·s or less at 20°C.

[Propellant]
Liquefied gases and/or compressed gases are used as propellants.
Specific examples of liquefied gas include liquefied petroleum gas (LPG), dimethyl ether, 1,1,1,2-tetrafluoroethane, 1,1- difluoroethane, trans -1,3,3,3-tetrafluoropropene. (HFO1234ze ) and the like .
Specific examples of compressed gas include nitrogen gas, nitrous oxide gas, carbon dioxide gas, compressed air, and mixed gases thereof.

[Cleaning aerosol composition]
The content of the aqueous stock solution and the propellant in the cleaning aerosol composition is 80 to 99.5% by mass, preferably 85 to 99% by mass, and 0.5 to 20%, preferably 0.5 to 20% by mass, of the propellant. It is 1 to 15% by mass. If the content of the propellant is too small, a sufficient jetting force cannot be obtained, making it difficult to reliably remove foreign matter that causes clogging in the drainpipe. On the other hand, if the content of the propellant is too high, and the propellant is flammable, ignition or explosion may occur. Also, the pressure in the aerosol container becomes too high, and the aerosol container may burst when stored at high temperatures.

[Aerosol products for drain pipe cleaning]
The aerosol product for cleaning drain pipes of the present invention is constructed by filling an aerosol container equipped with a valve and an actuator with the above cleaning aerosol composition.
The aerosol container is not particularly limited, and those commonly used for aerosol products can be used.

The valve is not particularly limited, and valves having various structures can be used.
FIG. 1 is an explanatory cross-sectional view showing the configuration of an example of a valve that can be applied to the drainpipe cleaning aerosol product of the present invention, together with an aerosol container. In the aerosol container 10 of this example, a mountain cup 12 having an opening in the center is airtightly provided at the upper opening of the container body 11 via an outer gasket 13 .
The valve 20 in the illustrated example is composed of a mountain cup 12, an outer gasket 13, a housing 21, a spring 26, a stem gasket 27, and a stem 30, and is an aerosol product capable of discharging contents by pressing the stem 30. This valve is commonly used for

The housing 21 has housing holes 22 and 23 formed in the bottom wall and the peripheral wall. A cylindrical tube connection portion 24 to which a dip tube (not shown) is connected is provided on the bottom wall portion of the housing 21 so as to extend downward. It communicates with a housing hole 22 formed in the wall.
A stem passage 31 is formed by a cylindrical hole in the stem 30 . Further, the stem 30 is formed with a stem hole 32 that opens in the outer peripheral surface and extends in the radial direction of the stem 30 so as to communicate with the stem passage 31 .
The presence or absence of the dip tube and the tube connecting portion 24 can be appropriately selected according to product specifications.
Furthermore, housing holes may be formed in both the bottom wall portion and the peripheral wall portion, or only one of them. Also, one housing hole or two or more housing holes may be formed.

It is preferable to use a stem 30 having a stem hole 32 with an area of 0.07 mm ² or more, particularly 0.19 mm ^{2 or} more. If the area of the stem hole 32 is too small, a sufficient injection force may not be obtained. Also, the stem 30 may be formed with a plurality of stem holes 32 .
The total area of the housing holes 22 and 23 of the housing 21 in the valve 20 is preferably 0.7 mm ² or more.

Although the actuator is not particularly limited, it is preferable to use an actuator capable of injecting the cleaning aerosol composition into the drain pipe while being in close contact with the periphery of the drain so as to close the drain.
FIG. 2 is an external view showing an example of an actuator that can be applied to the drainpipe cleaning aerosol product of the present invention. This actuator 1 has a bottomed cylindrical push button 2 . An injection port 3 for injecting the cleaning aerosol composition is formed at the center position of the bottom wall of the push button 2 . This injection port 3 is airtightly connected to the stem hole of the valve stem. A circular concave portion 4 is formed around the injection port 3 on the bottom wall of the push button 2 . A ring-shaped pressed portion 5 is formed around the concave portion 4 , and the washing aerosol composition is jetted from the injection port 3 by pressing the pressed portion 5 .

By using the actuator 1 having such a configuration, when the cleaning aerosol composition is sprayed from the actuator 1, the cleaning aerosol composition is prevented from leaking out of the drain port, and is present in the drain pipe. Since the necessary injection force is reliably applied to the foreign matter, the foreign matter that causes clogging in the drain pipe can be removed more reliably.

The area of the injection port 3 is preferably 0.19 mm ² or more, more preferably 0.5 mm ² or more.
The pressed portion 5 is configured to be in close contact with the peripheral portion of the drain port. The pressed portion 5 in the illustrated example has a flat surface and an outer diameter larger than the inner diameter of the drain port.

In the drain pipe cleaning aerosol product of the present invention, the ejection force when the cleaning aerosol composition is ejected from the ejection port 3 of the actuator 1 is 1.0 gf or more, preferably 3.0 gf or more. In the present invention, "jet force" means a value measured at a position 20 cm away from the jet nozzle.
If the jetting force is too small, it becomes difficult to reliably remove foreign matter that causes clogging in the drain pipe.

In the above, the injection force can be adjusted by changing the content of the propellant in the cleaning aerosol composition, the area of the stem hole 32 of the stem 30 in the valve 20 or the number of the stem holes 32 . For example, the greater the content of the propellant in the cleaning aerosol composition, the greater the jetting force, and the greater the area of the stem holes 32 or the greater the number of stem holes 32, the greater the jetting force.

In addition, in the aerosol product for cleaning drain pipes of the present invention, the foam density of the foam formed by spraying the cleaning aerosol composition is 0.35 g/cm ³ or less, preferably 0.01 to 0.01 g/cm 3 . 0.3 g/cm ³ .
If the foam density of the foam is too high, it becomes difficult to reliably remove foreign matter that causes clogging in the drain pipe.

In the aerosol product for cleaning the drain pipe, the pushed portion 5 of the push button 2 in the actuator 1 is pressed in close contact with the periphery of the drain port so as to block the drain port, thereby causing the push button 2 to move. The cleaning aerosol composition is injected from the formed injection port 3 . The cleaning aerosol composition is sprayed to form foam, and in this state flows through the drain pipe. When the foam reaches clogging debris present in the drain pipe, eg, in a trap, it pushes the debris out. Alternatively, the foam enters the gap between the drain pipe and the foreign matter, and the foam envelops the foreign matter, facilitating the pushing out of the foreign matter and removing the clogging foreign matter from the trap in the drain pipe.

As described above, according to the aerosol product for cleaning drain pipes of the present invention, the ejection force is 1.0 gf or more when ejected from the actuator, and foam with a foam density of 0.35 g/cm ³ or less is formed. Therefore, foreign matter that causes clogging in the drain pipe can be easily removed.

Examples of the aerosol composition for cleaning drain pipes of the present invention are described below, but the present invention is not limited to these examples.

[Preparation of aqueous stock solution]
Aqueous stock solutions 1 to 4 were prepared by mixing each component according to the formulation shown in Table 1 below.

<Examples 1 to 13 and Comparative Examples 1 to 2>
A stem and housing with the specifications shown below were produced.
(stem)
Stem 1: stem hole area 1.13 mm ² , stem hole number 3 Stem 2: stem hole area 0.19 mm ² , stem hole number 2 Stem 3: stem hole area 0.19 mm ² with one stem hole (housing)
Housing 1: Housing hole area of 3.15 mm ² or more Housing 2: Housing hole area of 3.14 mm ² Housing 3: Housing hole area of 1.28 mm ²

An aerosol product for drain cleaning was prepared by filling an aerosol container with an aqueous stock solution (200 mL) and a propellant according to the specifications shown in Table 2 and attaching a housing, a stem and an actuator to the aerosol container.

Regarding the obtained aerosol product for cleaning drain pipes, the ejection force when the cleaning aerosol composition was ejected from the actuator and the foam density of the formed foam were measured as follows. Table 2 shows the results.

(Injection force)
A disc-shaped stainless plate measurement panel with a diameter of 15 cm and equipped with a strain gauge type load transducer was placed at a position 20 cm away from the injection port of the actuator of the aerosol product for drain pipe cleaning. A cleaning aerosol composition was jetted from a drainpipe cleaning aerosol product toward the measurement panel for 3 seconds. The maximum value of the load applied to the measurement panel measured by a strain gauge type load transducer was defined as the injection force.

(foam density)
Using a drain cleaning aerosol product stored at 25° C., the cleaning aerosol composition was sprayed into a container having a volume of 100 cm ³ to fill the container with the foam formed. The mass of the foam in the container was measured, and the foam density of the foam was calculated from the measured mass and the amount of foam (100 cm ³ ).

[Foreign matter removal test]
As shown in FIG. 3, a drain pipe 40 having an S-type trap 41 was prepared. The drain pipe 40 is made of resin, has an inner diameter of 40 mm, and has a bellows shape. The height h1 from the bottom 42 of the S-type trap 41 to the drain port 45 is 45 cm, and the height h2 from the bottom 42 to the top 43 of the S-type trap 41 is 15 cm.
3.6 g of human hair with a length of 25 cm is loaded from the drain port 45 into the S-shaped trap 41 in the drain pipe 40, then 10 L of water is supplied into the drain pipe 40, and the human hair is removed by running water into the S-shaped trap. 41 could not be removed.

Then, the pressed portion of the actuator of the drain pipe cleaning aerosol product was brought into close contact with the peripheral portion of the drain port 45 . In this state, the cleaning aerosol composition is injected into the drain pipe 40 from the injection port formed in the actuator, and it is examined whether or not the human hair is removed. bottom. The above results are shown in Table 2.
A: When human hair is removed from the S-type trap 41 by injecting an amount of ⅓ or less of the total amount of the cleaning aerosol composition (for 200 mL of the aqueous undiluted solution) B: The total amount of the cleaning aerosol composition ( When human hair is removed from the S-type trap 41 by injecting an amount of more than 1/2 or less of the aqueous stock solution (for 200 mL of the aqueous stock solution). When human hair is removed from the S-type trap 41 by injecting an amount of more than 1/2 and 2/3 or less When human hair is not removed from the mold trap 41

As is clear from the results in Table 2, according to the drain pipe cleaning aerosol products according to Examples 1 to 13, human hair that causes clogging in the S-shaped trap 41 in the drain pipe 40 can be easily removed. confirmed to be possible.
On the other hand, in the drain pipe cleaning aerosol product according to Comparative Example 1, since the foam density of the formed foam is high, human hair that causes clogging in the S-shaped trap 41 in the drain pipe 40 can be removed. I couldn't do it. In addition, in the drain pipe cleaning aerosol product according to Comparative Example 2, since the jetting force was small, the human hair causing clogging in the S-shaped trap 41 in the drain pipe 40 could not be removed.

1 Actuator 2 Push Button 3 Injection Port 4 Concave Part 5 Pressed Part 10 Aerosol Container 11 Container Main Body 12 Mountain Cup 13 Outer Gasket 20 Valve 21 Housings 22, 23 Housing Hole 24 Tube Connection Portion 26 Spring 27 Stem Gasket 30 Stem 31 Stem Passage 32 Stem hole 40 Drain pipe 41 S-type trap 42 Bottom 43 Top 45 Drain

Claims (3)

A cleaning aerosol composition comprising 80 to 99.5% by mass of an aqueous stock solution containing water and a surfactant and 0.5 to 20% by mass of a propellant containing a liquefied gas and/or a compressed gas is applied to valves and Filled in an aerosol container equipped with an actuator,
The liquefied gas is liquefied petroleum gas (LPG), dimethyl ether, 1,1,1,2-tetrafluoroethane, 1,1-difluoroethane , or trans-1,3,3,3-tetrafluoropropene ( HFO1234ze ) ,
an ejection force of 1.0 gf or more when the cleaning aerosol composition is ejected from the actuator;
It forms foam with a foam density of 0.35 g/cm ³ or less,
An aerosol product for cleaning drain pipes, characterized by being used to remove foreign matter that causes clogging in drain pipes. 2. The actuator according to claim 1, wherein the actuator is capable of injecting the cleaning aerosol composition into the drain pipe while being in close contact with the periphery of the drain so as to block the drain. aerosol products for drain cleaning. 3. The aerosol product for cleaning drain pipes according to claim 1, wherein the aqueous undiluted solution contains a cleaning agent.

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