JP2012082572A - Seal destruction inhibitor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seal destruction inhibitor capable of effectively preventing seal destruction of a drain trap due to evaporation of a seal water part in the drain trap.SOLUTION: A seal destruction inhibitor to be used in a seal water part 13 of a drain trap 11 includes 1) a liquid first water soluble component (20°C) capable of being mixed with water having a specific gravity of 1.04 or more, 2) a solid second water soluble component (20°C) with a saturation solubility of 30 g/100 g of water (20°C), 3) a water insoluble component with a specific gravity of 0.73-0.95, a vapor pressure (20°C) of 0.15 kPa or less, and a kinematic viscosity ratio of 16.0×10m/s or more, and 4) a surfactant, as essential components. The seal destruction inhibitor is adjusted so that the specific gravity of the inhibitor as a whole can be 1.01 or more. When a seal destruction inhibitor P is put into the seal water part 13, the seal destruction inhibitor P once precipitates, after which the water insoluble component floats and uniform evaporation protective coatings 17 are formed in both water surfaces 13a and 13b in the water seal part 13.

Description

  The present invention relates to an anti-seal agent used for preventing the sealing of a drain trap attached to a drain outlet from evaporating, and more particularly, to both water surfaces of the sealing portion of the drain trap. The present invention relates to an anti-seal agent that forms an evaporation protective film.

  Here, “breaking” means that the sealing water in the drain trap decreases and it becomes difficult to perform the function of sealing water. Normally, in the middle of the drainage route of drainage facilities, a structure that can hold water at all times (sealing) for the purpose of preventing odors and gases from the sewer from entering the room and also for the purpose of preventing the entry of pests and small animals. Water drainage trap.

  Here, the S trap as shown in FIG. 1 will be described as an example of the drain trap, but the anti-seal agent (sealing protective agent) of the present invention is a P trap, U trap, belt wrap (strap) It can be applied to other drain traps.

  Conventionally, for the purpose of preventing evaporation of the sealing water of the drain trap, a method of forming an evaporation protection film on the surface of the sealing water with non-aqueous oils such as fats and oils, hydrocarbons (liquid paraffin), silicone oil, etc. is known. It has been put into practical use.

  In particular, due to reasons such as the fact that rental housing and condominiums are not used for a long period of time and water is not used for a long time, the sealing water will be broken and the function of the sealing water will be lost. Furthermore, pests and small animals enter. In order to prevent them, it is necessary to periodically flow water to form a sealed water before the breakage occurs. However, these sealed water management is troublesome and leads to waste of water.

  For this reason, in Patent Document 1, an oil component having a specific gravity smaller than that of water and a vapor pressure lower than that of water is mixed with a predetermined amount of water to obtain an emulsion (anti-seal agent: prevention of evaporation of sealed water). A method for effectively preventing evaporation of the sealing water in the sealing portion by pouring the agent composition) into the drain outlet has been proposed.

Japanese Patent No. 4390831

  However, it has been found that the anti-seal agent (sealed water evaporation inhibitor composition) described in the above patent document has the following problems.

  That is, there are two water surfaces 13a and 13b in the sealed portion 13 of the drain trap 11 such as an S trap type (see FIG. 1). For this reason, in the method of pouring the anti-seal agent from one of the drain outlets, the water / oil emulsion does not spread evenly at the sealing part 13, and on both water surfaces 13 a and 13 b, particularly the water surface 13 b opposite to the inlet side. It is considered difficult to form an evaporation protective film on the surface. For this reason, the sealing water may evaporate from the water surface 13b where the evaporation protection film is not formed to break the seal. In the figure, 15 is a drain plug.

  In order to form a uniform evaporation protective film on both water surfaces 13a and 13b of the sealed water portion 13, the sealed water portion 13 needs to be once made into a uniform water / oil emulsion. However, it is substantially impossible to stir and mix in the sealing portion 13 to which the antiseal agent is added in the drain trap 11. In addition, since the anti-seal agent contains a water component, oil-water separation occurs, and therefore, the anti-seal agent (water / oil emulsion) after stirring has been forced to be quickly introduced.

  In order to solve the above-mentioned problem, the present inventors can solve the above problem by separating and floating a water-insoluble component after the anti-seal agent is temporarily submerged at the bottom of the sealed water part. As a result of diligent development efforts, we came up with an anti-seal agent with the following composition.

A sealant that does not contain water as an essential ingredient,
1) Specific gravity: 1.04 or more, a liquid (20 ° C.) first water-soluble component that is miscible with water,
2) Saturated solubility: 30 g / 100 g of water (20 ° C.) or higher, solid (20 ° C.) second water-soluble component,
3) Specific gravity: 0.73 to 0.95, vapor pressure (20 ° C.): 0.15 kPa or less, kinematic viscosity: 16.0 × 10 ⁻⁶ m ² / s or more, a water-insoluble component, and
4) Surfactant as an essential component
The specific gravity of the entire agent is adjusted to be 1.01 or more.

  When the anti-sealant P obtained by the present invention is put into the sealed water part 13 formed in the drain trap 11, it temporarily settles at the bottom of the sealed water part 13 (FIG. 2 (A)), After a predetermined time has elapsed, the water-insoluble component floats and separates, and a uniform and stable evaporation protective film 17 can be formed on the two water surfaces 13a and 13b of the sealed water portion (FIG. 2B). That is, breakage due to evaporation of both water surfaces of the sealing portion of the drain trap can be effectively prevented.

It is a schematic sectional drawing which shows an example of the S-shaped drain trap which applies the antiseal agent of this invention. It is operation | movement explanatory drawing at the time of applying the anti-seal | rupture prevention agent of this invention to a drain trap, (A) is each schematic sectional drawing after formation of an evaporative protection film immediately after injection | throwing-in, (B).

  The embodiment of the present invention will be described in more detail.

  In the following description, “%” and “part” indicating the composition ratio (rate) are mass units unless otherwise specified. Further, “liquid”, “solid”, “solubility” and “vapor pressure” indicating the characteristics of each component are all based on 20 ° C. unless otherwise indicated.

  The present invention is an anti-seal agent that does not contain water as an essential component, and as described above, (1) a first water-soluble component, (2) a second water-soluble component, (3) a water-insoluble component, and ( 4) A surfactant is an essential component, and the total specific gravity of the entire agent is adjusted to 1.01 (preferably 1.02) or more. When the apparent specific gravity is small, it is difficult to obtain the effect of the present invention (temporary sedimentation of the antiseal agent). The upper limit is not particularly limited as long as the water-insoluble component is separated and floated after the entire agent is settled and an evaporation protection film can be formed. From the standpoint of agent preparation (ease of selecting each agent component, mixing stability), it is usually 1.20 (preferably 1.10) or less.

(1) First water-soluble component:
Specific gravity: 1.04 or more, liquid that is miscible with water. When the specific gravity of the first water-soluble component is less than 1.04, it is difficult to adjust the specific gravity of the entire agent to 1.01 or more. In addition, when a water-insoluble component is used, a problem is likely to occur in the effect of the present invention, for example, three-layer separation occurs in the sealed portion.

  Preferably, one or more polyhydric alcohols can be selected and used. Specifically, it is preferable to use the following exemplified compounds having 2 to 6 carbon atoms and aggregates thereof. After the compound name, the number of carbon atoms (C) and specific gravity are indicated as appropriate.

Propylene glycol (PG) ... C3, 1.04
Glycerin ... C3, 1.26
Diglycerin ... glycerin dimer, 1.28
Polyglycerin ... glycerin aggregate, 1.26
Ethylene glycol (EG) ... C2, 1.12
Diethylene glycol ... C4, 1.12
Triethylene glycol ... C6, 1.12
Polyethylene glycol (PEG: molecular weight 200-600) ... ethylene glycol aggregate, 1.13

  The blending ratio of the first water-soluble component is selected from the range of 10 to 98%, desirably 20 to 80%. If the mixing ratio is small, it is difficult to adjust the specific gravity of the whole agent to 1.01 or more. On the other hand, if the blending ratio is high, the relative proportion of the water-insoluble component is lowered, and the amount of input necessary for forming the evaporation protective film is increased, which is not desirable in terms of cost.

(2) Second water-soluble component:
It is solid (20 ° C.) with a saturation solubility of 30 g / 100 g of water (20 ° C.) or more. If the saturation solubility of the second water-soluble component is low, the compatibility (miscibility) with the first water-soluble component (miscible with water) is insufficient, and the overall specific gravity is adjusted to 1.01 or more. This is not desirable because the second water-soluble component is liable to precipitate as the ambient temperature changes.

  For example, organic compound group consisting of monosaccharide, disaccharide, solid sugar alcohol, urea and hydroxy polyvalent carboxylic acid (preferably having 4 to 6 carbon atoms), and alkali, alkaline earth, ammonium salt, carbonate And one or more selected from the group of inorganic compounds consisting of alkali hydroxides.

  Specific examples of each group are shown below together with solubility.

1) Organic compound group-Monosaccharide: Glucose (anhydrous glucose) ... 47 g / 100 g of water,
Glucose (glucose monohydrate) ... 100g / 100g of water,
Fructose ... 79g / 100g water,
・ Disaccharides: sucrose (sucrose) 211.5 g / 100 g water,
Maltose (maltose monohydrate) ... 108g / 100g water,
Hydroxy acids: citric acid anhydride 145 g / 100 g water
Citric acid monohydrate ... 207g / 100g water,
Malic acid ... 125g / 100g water,
・ Others: Sorbitol (solid sugar alcohol) ... 220 g / 100 g of water,
Urea ... 59g / 100g water,

2) Inorganic compounds • Alkali, alkaline earth, ammonium salt
Potassium chloride 74 g / 100 g water,
Sodium chloride: 74g / 100g of water,
Calcium chloride ... 74g / 100g water,
Magnesium chloride: 54 g / 100 g of water,
Ammonium chloride 37.2 g / 100 g water,
Potassium carbonate ... 112g / 100g water,
・ Alkali hydroxides
Sodium hydroxide ... 109g / 100g water
Potassium hydroxide ... 113g / 100g water
Among these, monosaccharides, disaccharides, and urea are particularly desirable because they are neutral in liquidity and have little influence on the trap material and the human body.

  The blending ratio of the second water-soluble component is selected from the range of 1 to 50%, desirably 3 to 20%.

  And the total compounding rate of a 1st, 2nd water-soluble component is selected from the range of 20-99%, desirably 30-90%. If the blending ratio is low, it will be difficult to adjust the specific gravity of the whole agent to 1.01 or more. If the blending ratio is high, the relative proportion of water-insoluble components will be small, and an evaporation protection film suitable for use will be formed. It is difficult to secure the necessary amount for use. The total blending ratio of the first and second water-soluble components varies depending on the compatibility (miscibility) of the second water-soluble component with the first water-soluble component.

(3) Water-insoluble component:
Specific gravity: 0.73 to 0.95, vapor pressure: 0.15 kPa or less, kinematic viscosity: 16 × 10 ⁻⁶ m ² / s or more. The water at 20 ° C. has a vapor pressure: 2.33 kPa (17.5 mmHg) and a kinematic viscosity: 1.0038 × 10 ⁻⁶ m ² / s.

  Even if any of the characteristics of the water-insoluble component is lacking, the ability to form and maintain the evaporation protection film is insufficient, and the evaporation protection film disappears early, making it difficult to maintain the anti-seal action for a long period of time.

  Specific examples include liquid paraffin, paraffinic hydrocarbon, and silicone oil. Each specific example is shown below with specific gravity, vapor pressure, and kinematic viscosity.

Liquid paraffin: Specific gravity: 0.85 to 0.94, Vapor pressure: 0.01 Pa or less, Kinematic viscosity: 16 × 10 ⁻⁶ m ² / s or more Hydrocarbon (C5 to C15) ... Specific gravity: 0.73 to 0.90, Vapor pressure : 0.1 Pa or less, kinematic viscosity: 16 × 10 ⁻⁶ m ² / s or more Silicone oil: specific gravity 0.85 to 0.98, vapor pressure (25 ° C.): 133 Pa or less, kinematic viscosity: 20 × 10 ⁻⁶ m ² / s or more The mixing ratio of the water-insoluble component is 1 to 80%, desirably 10 to 70%. When the said compounding ratio is small, the agent usage-amount for forming an evaporation protective film will increase. Moreover, when the said compounding rate is large, it will become difficult to ensure the magnitude | size (for example, 1.01 or more) required in order to make the whole agent specific gravity settle in sealed water.

(4) Surfactant:
A uniform mixed state of the water-soluble component (both first and second) and the water-insoluble component is maintained for a predetermined time (preferably about 5 to 10 minutes) or longer.

  Any nonionic, amphoteric, cationic, or anionic surfactant can be used. Among these, nonionic surfactants and amphoteric surfactants are desirable because they can easily maintain a uniform mixed state of the agents as compared with other types of surfactants.

  Specific examples of the nonionic and amphoteric surfactants will be described below. “POE” and “POP” mean “polyoxyethylene” and “polyoxypropylene”.

  Nonionic surfactant: POE sorbitan fatty acid ester, POE-POP copolymer, polyoxyethylene alkyl ether, POE fatty acid ester, polyoxyalkylene alkyl ether.

  Amphoteric surfactants: betaine type (for example, lauryl dimethyl betaine), fatty acid amide propyl betaine type (for example, aminopropyl betaine laurate), carboxymethylamine type (for example, lauryl aminodiacetate).

  Among the above surfactants, polyoxyalkylene alkyl ether and carboxymethylamine type are particularly preferable because they can easily maintain the uniform state of the agent.

  The blending ratio of these surfactants varies depending on the combination of the water-soluble component and the water-insoluble component and the total blending ratio. That is, 0.1 to 2 parts, preferably 0.3 to 1.0 parts, with respect to 100 parts of the total amount of water-soluble components and water-insoluble components.

  When using the anti-seal agent, if the blending ratio of the surfactant is small, it is difficult to maintain a uniform mixed state of the agent (separation of the water-insoluble component from the water-soluble component is accelerated). On the contrary, when the compounding ratio of the surfactant increases, it becomes difficult to release the uniform mixed state (separation of the water-insoluble component from the water-soluble component), and it becomes difficult to form an evaporation protective film.

  In addition to the above essential components, lower alcohols such as isopropyl alcohol (IPA) and ethyl alcohol can be added as a dispersion aid.

  The mixing ratio of the lower alcohol is 0.2 to 10 parts, preferably 0.3 to 6 parts, with respect to 100 parts of the total amount of the water-soluble component and the water-insoluble component.

  Furthermore, if necessary, it can contain a bactericide (preservative), a pigment, a fragrance and the like within a range not hindering the object of the present invention.

  In particular, since it is assumed that water will not flow for a long period of time, it is desirable to add a bactericidal agent. Specifically, examples of the bactericidal agent include triclosan, paraoxybenzoic acid ester, glutaraldehyde and the like.

  Hereinafter, the present invention will be described in detail with reference to Examples and Comparative Examples. The present invention is not limited to these examples.

(1) Preparation of anti-seal agent The anti-seal agents of each Example and Comparative Example were prepared as follows, and the following reference examples were used. A summary of these compositions is shown in Table 1 for reference. In addition, the heating in an Example was performed in 45-65 degreeC.

<Example 1>
50% glycerin, 10% urea, 5% water, 0.55% carboxymethylamine type amphoteric surfactant, 0.65% isopropyl alcohol (IPA), 33.8% liquid paraffin are blended in order while heating and stirring. Thus, a sealant having a specific gravity of 1.07 was obtained.

<Example 2>
Sequentially heated and stirred with 35% glycerin, 20% ethylene glycol, 2% water, 5% sucrose, 0.3% polyoxyethylene alkyl ether surfactant, 1% ethyl alcohol and 36.7% dodecane By blending, a sealant having a specific gravity of 1.04 was obtained.

<Example 3>
50% glycerin, 10% urea, 5% isopropyl alcohol (IPA), 0.5% carboxymethylamine type amphoteric surfactant, 0.3% triclosan, 34.2% liquid paraffin are blended sequentially while heating and stirring. Thus, a sealant having a specific gravity of 1.06 was obtained.

<Comparative Example 1>
65% water, 1.5% polyoxyethylene alkyl ether surfactant, and 33.5% liquid paraffin were blended sequentially with stirring (without heating) to obtain a sealant with a specific gravity of 0.89. It was.

<Comparative example 2>
50% glycerin, 10% urea, 5% water, and 35% liquid paraffin were sequentially blended with heating and stirring to obtain a sealant having a specific gravity of 1.07.

<Reference Example 1>
Reference water 1 was used instead of the anti-seal agent.

<Reference Example 2>
Liquid paraffin (specific gravity 0.86) was used as Reference Example 2 instead of the anti-seal agent.

(2) Method of evaluation test The evaluation test of the anti-seal agent was performed according to the method described for each of the following items.

<Evaporation prevention effect>
In a beaker with an inner diameter of 50 mm containing 60 g of tap water, 10 mL of the antiseal agent of each of the above examples was charged and left in a thermostatic apparatus set at 60 ° C. for 15 hours. By measuring the weight immediately after and the weight after 15 hours, the amount of evaporation (weight change rate) was evaluated.

The evaluation criteria were as follows.
○: Weight change rate less than 0.5% △: Weight change rate 0.5% or more and less than 2.0% ×: Weight change rate 2.0% or more

<Sedimentation>
10 mL of the anti-seal agent of each of the above examples was charged from one end of a bellows hose with an inner diameter of 15 mm bent into a U shape containing 100 g of tap water. The state of the composition immediately after the addition was compared by visual observation.

The evaluation criteria were as follows.
○: All of the charged composition settles in the U-shaped tube lower layer. Δ: A part of the charged composition settles in the U-shaped tube lower layer. X: Settling cannot be confirmed.

<Evaporation protective film forming ability>
10 mL of the anti-seal agent of each of the above examples was charged from one end of a bellows hose with an inner diameter of 15 mm bent into a U shape containing 100 g of tap water. The formation state of the evaporation protective film after standing for 1 hour from the addition was compared by visual observation.

The evaluation criteria were as follows.
○: Evaporation protection film is evenly formed on the water surface of both U-shaped pipes △: Evaporation protection film is formed on the water surface of both U-shaped pipes, but non-uniform ×: Evaporation protection film is formed only on the water surface of one of the U-shaped tubes

<Mixing stability>
In a 100 mL glass sample tube, 80 mL of the antiseal agent of each of the above examples was placed and shaken well. Then, the state which was left still at room temperature (20-25 degreeC) for 1 hour was compared by visual observation.

The evaluation criteria were as follows.
○: Uniform state △: Partial separation has started ×: Fully separated into two layers

(3) Evaluation Test Results and Discussion The results of each evaluation test are summarized in Table 2.

  In Examples 1 to 3, regardless of the presence or absence of water, all of them had satisfactory functions in terms of evaporation prevention effect, sedimentation, evaporation protective film forming ability, and mixing stability.

  In Comparative Example 1, since the specific gravity of the composition is lighter than water, there is no sedimentation, and in terms of the ability to form an evaporation protection film, an evaporation protection film is formed only on one side of the U-shaped tube (the water surface into which the composition is introduced). It was. In such a state, since water evaporates from the water surface on which no film is formed, it cannot be said that it is effective in preventing the sealing portion from being broken.

  Comparative Example 2 was satisfactory in terms of the anti-evaporation effect, but because no surfactant was blended, liquid paraffin was separated at the time of use, and sedimentation of the entire composition could not be confirmed. It was. Therefore, it was not possible to form an even evaporation protective film on both water surfaces of the U-shaped tube. In such a state, the entire water surface on the opposite side where the composition of the U-shaped tube is charged cannot be covered with the evaporation protection film, and water evaporation proceeds from the gap. It cannot be said that it is effective in preventing. Further, it is possible to form an evaporation protection film on both water surfaces of the U-shaped tube by increasing the input amount, but it is preferable that the input amount is small in view of economic burden.

DESCRIPTION OF SYMBOLS 11 Drain trap 13 Sealing part 13a, 13b Water surface of sealing part 17 Evaporation protection film (evaporation prevention film)
P anti-sealant

Claims (6)

A sealant that does not contain water as an essential ingredient,
1) Specific gravity: 1.04 or more, a liquid (20 ° C.) first water-soluble component that is miscible with water,
2) Saturated solubility: 30 g / 100 g of water (20 ° C.) or higher, solid (20 ° C.) second water-soluble component,
3) Specific gravity: 0.73 to 0.95, vapor pressure (20 ° C.): 0.15 kPa or less, kinematic viscosity: 16.0 × 10 ⁻⁶ m ² / s or more, a water-insoluble component, and
4) Surfactant as an essential component
An anti-seal agent characterized in that the specific gravity of the entire agent is adjusted to be 1.01 or more.   The first water-soluble component is one or more selected from polyhydric alcohols, and the second water-soluble component is an organic compound comprising a monosaccharide, a disaccharide, a solid sugar alcohol, urea, and a hydroxy polyvalent carboxylic acid. 2. The sealant according to claim 1, wherein one or more are selected from the group and an inorganic compound group consisting of alkali / alkaline earth / ammonium salt, carbonate and alkali hydroxide.   The anti-sealant according to claim 1 or 2, wherein the water-insoluble component is selected from the group consisting of liquid paraffin, paraffinic hydrocarbon and silicone oil.   The anti-sealant according to claim 1, 2 or 3, wherein the surfactant is one or more selected from the group of amphoteric surfactants or nonionic surfactants.   The anti-seal agent according to any one of claims 1 to 4, wherein when the anti-seal agent is stirred and mixed at the time of use, a uniform state can be maintained for 5 to 10 minutes or more. 6. A method for preventing unsealing with an anti-seal agent according to any one of claims 1 to 5, wherein the anti-seal agent is stirred and then introduced from one of the drain traps in which a sealed portion is formed. An anti-seal method comprising temporarily allowing an anti-sealing agent to settle, and then levitating water-insoluble components to form evaporation protective films on both water surfaces of the water-sealing part.

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