JPH11256138A - Agent for preventing water leakage and prevention of water leakage - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a water leakage-preventing agent capable of being easily applied to buildings without deteriorating the beautiful appearances of the buildings and hardly freezing at a low cost by using a surfactant, a highly water-absorbing polymer, a gelling agent for the highly water-absorbing polymer, a polyhydric alcohol and water. SOLUTION: This agent for preventing the leakage of water comprises (A) a surfactant (for example, a fatty acid sodium salt), (B) a highly water-absorbing polymer [preferably a non-crosslinked polymer such as poly sodium (meth) acrylatel and (C) a gelling agent for the highly water-absorbing polymer (for example, bentonite, montmorillonite, smectite, water-swellable mica, magnesium acetate, calcium acetate, aluminum acetate or aluminum sulfate), (D) a dihydric or a higher-hydric alcohol (for example, a monoalkylene glycol such as ethylene glycol), and (E) water. The agent for preventing the leakage of water preferably comprises 0.1-30 pts.wt. of component A, 0.1-20 pts.wt. of the component B, 0.1-30 pts.wt. of the component C, 1-60 pts.wt. of the component D and 100 pts.wt. of the water as the component E.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water leakage preventing agent and a water leakage preventing method having good water stopping performance, and more particularly, to a water leakage preventing method by entering a crack or a hole causing water leakage and filling the gap. The present invention relates to a water leakage preventing agent capable of preventing intrusion and a method of preventing water leakage by spraying the water leakage preventing agent on a roof, floor or wall.

[0002]

2. Description of the Related Art To stop water leakage from a roof, a floor or a wall, a sealing agent is applied and filled into a leaking point such as a hole or a crack or a gap which causes the leaking. The entire roof must be replaced, the waterproof sheet must be completely replaced, the walls must be spray-painted, and the tiles must be completely replaced. In many cases, it is extremely difficult to identify the infiltration point of the leaked water, so that simple repair simply by applying and filling a sealant is often not solved. In the case of rain leakage, the compensation period is often as long as 5 to 10 years, during which time the contractor, the contractor whose compensation has expired, and sometimes the owner, have to bear a large amount of expenses. Have been. In this regard, Tokuhei 7-966
No. 72 discloses a rain leak preventive for spraying, and discloses a method of closing a crack which causes water leakage with a water-insoluble powdery material. However, when the outside air temperature is below freezing during use, there is a disadvantage that the spraying rain-leak prevention agent freezes and spraying becomes impossible.

[0003]

There is a need for a leak-proofing agent which is inexpensive, does not require construction work, does not impair the aesthetics of the building, and is hard to freeze.

[0004]

Means for Solving the Problems The present inventors have conducted intensive studies to solve the above-mentioned problems, and as a result, have reached the present invention. That is, the present invention provides (1) (a) a surfactant, (b) a superabsorbent polymer, (c) a gelling agent for a superabsorbent polymer,
(D) a polyhydric alcohol having a valency of 2 or more, (e) a water leakage inhibitor containing water, (2) 100 parts by weight of water of (e),
(A) 0.1 to 30 parts by weight of a surfactant, (b) 0.1 to 20 parts by weight of a superabsorbent polymer, (c) 0.1 to 30 parts by weight of a gelling agent for a superabsorbent polymer, (d) ) 1 to 60 parts by weight of a dihydric or higher polyhydric alcohol according to the above (1), (3) the superabsorbent polymer is a poly (meth) acrylic acid derivative, an alginic acid derivative, a starch derivative, a cellulose derivative. The water leakage preventive according to the above (1) or (2), which is at least one selected from polyvinyl alcohol derivatives and poly N-vinylacetamide derivatives, and (4) the superabsorbent polymer is poly (meth) acrylic acid Sodium, poly (meth) acrylamide, alginic acid, sodium alginate, potassium alginate, propylene glycol alginate, starch, starch glycolic acid Thorium, sodium starch phosphate ester, methylcellulose, hydroxypropyl cellulose, sodium carboxymethyl cellulose,
The water leakage preventive according to claim 3, which is at least one selected from polyvinyl alcohol and poly N-vinylacetamide, (5) the gelling agent for the superabsorbent polymer is a silicate, a water-soluble alkaline earth metal salt, Any one of the above items (1) to (4), which is at least one selected from alum, a water-soluble aluminum salt, a water-soluble iron salt, a water-soluble manganese salt, a water-soluble zinc salt, and an alkaline earth metal oxide. (6) any one of the above items (1) to (5), wherein the (6) dihydric or higher polyhydric alcohol is at least one selected from monoalkylene glycol, glycerin, ethylene glycol derivatives and pentaerythritol (7) After spraying the water leakage preventive agent according to any one of the above items (1) to (6), the water leakage preventive agent is further injected with water into the water leakage infiltration inlet. On water prevention method.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail.
The surfactant (component (a)) used in the present invention facilitates the introduction of a water leakage preventing component (hereinafter, simply referred to as a water leakage preventing component) in the water leakage preventing agent of the present invention to a leaking infiltration point. Surfactants may be of any type, anionic, cationic, nonionic, amphoteric, etc., specifically,
Fatty acid salts, phosphate esters, polyoxyethylene glycol, tetraalkylammonium salts, alkyl ether sulfates, alpha olefin sulfonates,
Fatty acid alkanolamides and the like may be mentioned, and these may be used alone or in combination of two or more. From the viewpoint of the environment, it is preferable to select one having good biodegradability. Specific examples include fatty acid sodium, fatty acid potassium, sodium alkyl ether sulfate, sodium alpha-olefin sulfonate, fatty acid alkanolamide, alkylamine oxide and the like. The amount of the surfactant to be added is usually 0.1 to 100 parts by weight of water (component (d)).
To 30 parts by weight, preferably 0.3 to 10 parts by weight.

The superabsorbent polymer used in the present invention ((b)
Part of the component) reacts with the gelling agent (component (c)) of the superabsorbent polymer to form a water-insoluble gel, and the unreacted remainder becomes a binder for the gel. Work to prevent The superabsorbent polymer used in the present invention absorbs water in a short time, swells,
A substance that swells up to about several hundred times its own weight is used at the maximum, and a non-crosslinked substance is preferable. Specific examples of the superabsorbent polymer that can be used include alkali metal poly (meth) acrylate and sodium (meth) acrylate.
Poly (meth) acryl such as vinyl alcohol copolymer (saponified methyl (meth) acrylate-vinyl acetate copolymer), poly (meth) acrylonitrile-based polymer, hydroxyethyl methacrylate polymer, poly (meth) acrylamide Acid derivatives, alginic acid, sodium alginate, potassium alginate, alginic acid derivatives such as alginate propylene glycol ester, starch, sodium starch glycolate, potassium starch glycolate, sodium starch phosphate,
Starch derivatives such as starch phosphate potassium,
Examples include cellulose derivatives such as methylcellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, and potassium carboxymethylcellulose, polyvinyl alcohol derivatives, and poly N-vinylacetamide derivatives. Preferred are sodium poly (meth) acrylate, poly (meth) acrylamide, alginic acid, sodium alginate, potassium alginate, propylene glycol alginate, starch, sodium starch glycolate, sodium starch phosphate, methylcellulose, hydroxypropylcellulose , Sodium carboxymethylcellulose, polyvinyl alcohol or poly N-vinylacetamide. These superabsorbent polymers may be used alone or as a mixture. The compounding amount of the superabsorbent polymer is usually 0.1 to 100 parts by weight of water (component (d)).
It is 1 to 20 parts by weight, preferably 0.2 to 10 parts by weight.

Further, another hydrophilic paste may be mixed with the superabsorbent polymer. The hydrophilic sizing agent may be any of a natural sizing agent, a synthetic polymer sizing agent, and the like, but is preferably a synthetic polymer sizing agent that does not easily rot. Specifically, gelatin,
Glue, acrylic emulsion and the like. When a hydrophilic paste is used, the amount of the hydrophilic paste is water ((d) component).
It is usually 1 to 10 parts by weight based on 100 parts by weight. The hydrophilic paste has a function of preventing the water leakage inhibitor of the present invention from flowing out after entering the water leakage entry point.

The gelling agent (c) for the superabsorbent polymer is specifically silicate, water-soluble alkaline earth metal salt, alum, water-soluble aluminum salt, water-soluble iron salt, water-soluble manganese salt,
Water-soluble zinc salts or alkaline earth metal oxides and the like, and silicates such as bentonite, montmorillonite,
A silicate mineral that has the ability to exchange its own metal cations, such as smectite and mica powder, with the cations of the superabsorbent polymer. Examples of water-soluble alkaline earth metal salts are calcium acetate, calcium chloride, and nitric acid. calcium,
Magnesium acetate, magnesium chloride, magnesium nitrate, magnesium sulfate, and the like.Examples of alum include aluminum potassium alum, iron alum, and the like, and water-soluble aluminum salts include aluminum acetate, aluminum chloride, aluminum sulfate, and aluminum nitrate. Examples of water-soluble iron salts include iron acetate, iron chloride, iron sulfate, and iron nitrate. Examples of water-soluble manganese salts include manganese acetate, manganese chloride, and manganese sulfate. Examples of water-soluble zinc salts include zinc acetate and chloride. Zinc, zinc nitrate and zinc sulfate, and examples of alkaline earth metal oxides include magnesium oxide and calcium oxide. Preferred are bentonite, montmorillonite, smectite, swelling mica, magnesium acetate, calcium acetate, aluminum acetate,
Aluminum sulfate. The superabsorbent polymer gelling agent makes the superabsorbent polymer a water-insoluble gel, but the resulting gel has weak sedimentation. Therefore, it is quickly guided to the leak entry point, and the leak entry point can be closed. In addition, since the gel is hardly soluble in water, the gel that has closed at the leaked portion does not dissolve again in water and does not flow away. The amount of the gelling agent for the superabsorbent polymer is usually 0.1 to 30 parts by weight per 100 parts by weight of water (component (d)).
Although it is a part by weight, its gelling ability varies depending on the individual substance, but it is preferably not more than the weight of the superabsorbent polymer except for the silicate mineral.

In the present invention, if necessary, a water-insoluble powder may be mixed. Water-insoluble powders are organic powders,
Either inorganic powder or metal powder may be used, and it is preferable that the powder is widely and uniformly distributed with a particle size of 0.1 μm to 1 mm. The specific gravity of the particles is preferably about 1.0 or slightly heavier than water, and it is preferable that the particles are suspended in water and dispersed uniformly. Specific examples include rosin powder, resin particles, clay, wood flour, vermiculite, perlite, mica powder, and the like, and those having the property of swelling by absorbing water are preferable. The water-insoluble powder can be used alone or in combination of two or more. When using two or more kinds in combination, a combination that broadens the particle size distribution is preferable. Since the color of the water-insoluble powdery material affects the appearance of the building when sprayed, in the case of a roof or a wall, it is better to select the same color or the colorless and transparent one. In the present invention, since the water-insoluble powdery substance has a gel of a superabsorbent polymer, it does not easily settle, and the storage stability is good. The compounding amount of the water-insoluble powder is usually 2 to 10 parts by weight based on 100 parts by weight of water (component (e)).

In the present invention, by adding a dihydric or higher polyhydric alcohol, the freezing temperature of the present invention can be lowered to below freezing, and a water leakage preventive agent that can be sprayed even in cold regions without hindering the water leakage prevention performance can be obtained. . The dihydric or higher polyhydric alcohol is not particularly limited as long as it has a function of preventing the water leakage preventing agent from freezing, and a low molecular weight compound is preferable. Specific examples of polyhydric alcohols that can be used include:
At least one selected from monoalkylene glycols, glycerin, ethylene glycol derivatives and pentaerythritol may be mentioned, and these may be mixed. Examples of the monoalkylene glycol include ethylene glycol, propylene glycol, butylene glycol, and pentanediol, and examples of the ethylene glycol derivative include ethylene glycol, diethylene glycol, triethylene glycol, tetraethylene glycol, and polyethylene glycol. The blending amount of the dihydric or higher polyhydric alcohol is water (component (e)) 100
It is usually 1 to 60 parts by weight, preferably 10 to 30 parts by weight based on parts by weight.

The water leakage preventive of the present invention can be obtained by mixing the above components at a predetermined ratio. In this case, the order of mixing the components is arbitrary. As a method of using the water leakage preventive agent of the present invention, it is sufficient to spray the water near the water leakage entrance when it is possible to find the entrance. If the location of the leak is unknown, it may be evenly spread over the roof, floor or wall where the water leaks, but it is not necessary to apply the roof, floor or wall entirely.

A preferred roof for applying the water leakage preventive of the present invention is a reinforced concrete flat roof, which is usually a combination of concrete joint waterproofing and membrane waterproofing such as asphalt waterproofing, sheet waterproofing, coating waterproofing, etc. It can be sprayed over the waterproof layer. The floor to which the water leakage preventive agent of the present invention is preferably applied is a bare concrete body, but mortar, paint, sheet, or the like may be placed thereon, and it may be sprayed from above. A preferred outer wall for applying the water leakage preventive of the present invention is cement mortar,
Acrylic lysine spraying, tiled, brick, concrete base, etc.

[0013]

Next, the present invention will be described in more detail by way of examples.

Example 1 (1) Surfactant: 10 g of sodium stearate
(Reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (2) Superabsorbent polymer: sodium polyacrylate
4 g (trade name: Panakayak F, manufactured by Nippon Kayaku Co., Ltd.) (3) Gelling agent for superabsorbent polymer: bentonite 6
0 g (trade name: Super Ben, manufactured by Kunimine Industries Co., Ltd.) (4) Dihydric or higher polyhydric alcohol: glycerin 200
g (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (5) Water 1000 g These were sufficiently mixed to obtain a viscous liquid (water leakage inhibitor of the present invention).

Separately, a commercially available sand-containing cement (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. Apply 20 g of the above-mentioned water leakage preventive agent to the inside of the seam of this container with a brush, then pour 100 g of water, leave the remaining water for 5 minutes, pour water until 1 hour later, and pour water until it is full. Did not. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. Further, this was left standing for 3 days with water, but no water leaked from the joint.

Further, 100 g of the above-mentioned water leakage preventing agent was put in a polyethylene container, sealed, and left in a freezer at minus 12 ° C. Separately, 100 g of the above-mentioned composition for preventing water leakage without glycerin was sealed in the same polyethylene container and left in a freezer. After 24 hours, when both containers were taken out, the water leakage preventive agent of the present invention did not freeze and remained in a liquid state, but those having a composition other than glycerin were frozen.

Example 2 (1) Surfactant: 5 g of sodium stearate (reagent, manufactured by Wako Pure Chemical Industries, Ltd.): 5 g of sodium lauryl sulfate (trade name: Emal 10 powder, manufactured by Kao Corporation) (2) High Water-absorbing polymer: sodium alginate 20
g (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (3) Gelling agent for superabsorbent polymer: smectite 5
0 g (trade name: Smecton, manufactured by Kunimine Industries Co., Ltd.) (4) Dihydric or higher polyhydric alcohol: 200 g of ethylene glycol (reagent, manufactured by Wako Pure Chemical Industries, Ltd.) (5) Water 1000 g These are sufficiently mixed. A viscous liquid (water leakage inhibitor of the present invention) was obtained.

Separately, a commercially available sand-containing cement (trade name:
Aso Katei Cement, Aso Cement Co., Ltd.) 3.0
Kg was prepared, 800 g of water was added thereto, and the mixture was kneaded well. Then, the mixture was placed in a mold and solidified into a shape shown in FIG. After the concrete container was split in two (FIG. 2), it was rejoined and reinforced with wire, and water was poured into the container in the state shown in FIG. 3, but water leaked immediately from the joint. Apply 20 g of the above-mentioned water leakage preventive agent to the inside of the seam of this container with a brush, then pour 100 g of water, leave the remaining water for 5 minutes, pour water until 1 hour later, and pour water until it is full. Did not. After standing for 30 minutes, water was drained from the container, and the container was dried at 60 ° C. for 3 days. After the vessel had cooled to room temperature, it was poured again with water, but no water leaked out of the seams. Further, this was left standing for 3 days with water, but no water leaked from the joint.

In addition, 100 g of the above-mentioned water leakage preventing agent was put in a polyethylene container, sealed, and left in a freezer at minus 12 ° C. Also, 100 g of the above-mentioned composition of the water leakage preventive agent except for glycerin was put in the same polyethylene container, sealed, and left in the freezer. After 24 hours, when both containers were taken out, the water leakage preventive agent of the present invention did not freeze and remained in a liquid state, but those having a composition other than glycerin were frozen.

[0020]

The water leakage preventive agent of the present invention is applied to a mortar or a concrete product, so that the cracked portion is quickly filled with the water leak preventive agent by utilizing water entering through cracks generated in the mortar or concrete product. Therefore, it is possible to prevent the intrusion of the infiltration water into the inside, and it does not freeze even in a cold region. Therefore, it is extremely useful for preventing deterioration of mortar and concrete products.

[Brief description of the drawings]

Fig. 1 Concrete container

FIG. 2 is a concrete container of FIG. 1 divided into two parts.

FIG. 3 is a view obtained by restoring the two-part container obtained in FIG. 2;

[Explanation of symbols]

 1; concrete container 2; seam 3; wire

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[Procedure amendment]

[Submission date] March 4, 1999

[Procedure amendment 1]

[Document name to be amended] Statement

[Correction target item name] 0019

[Correction method] Change

[Correction contents]

Further, 100 g of the above-mentioned water leakage preventing agent was put in a polyethylene container, sealed, and left in a freezer at minus 12 ° C. Further, 100 g of the above-mentioned composition of the water leakage preventing agent except for ethylene glycol was placed in the same polyethylene container, sealed, and left in a freezer. 2
After 4 hours, when both containers were taken out, the water leakage preventing agent of the present invention did not freeze and remained in a liquid state, but the one excluding ethylene glycol from this was frozen.

Continued on the front page (51) Int.Cl. ⁶ Identification code FI C08L 33/02 C08L 33/02 39/00 39/00 101/00 101/00 E04D 7/00 E04D 7/00

Claims (7)

[Claims] 1. A composition comprising (a) a surfactant, (b) a superabsorbent polymer, (c) a gelling agent for a superabsorbent polymer, (d) a dihydric or higher polyhydric alcohol, and (e) water. Water leakage inhibitor. 2. With respect to 100 parts by weight of water of (e), (a)
0.1 to 30 parts by weight of surfactant, (b) 0.1 to 20 parts by weight of superabsorbent polymer, (c) 0.1 to 30 parts by weight of gelling agent for superabsorbent polymer, (d) divalent The water leakage preventive according to claim 1, wherein the amount of the polyhydric alcohol is 1 to 60 parts by weight. 3. The super water-absorbing polymer is a poly (meth) acrylic acid derivative, an alginic acid derivative, a starch derivative, a cellulose derivative, a polyvinyl alcohol derivative, and a poly (N-
The water leakage preventive according to claim 1 or 2, which is at least one selected from vinyl acetamide derivatives. 4. The superabsorbent polymer is selected from the group consisting of sodium poly (meth) acrylate, poly (meth) acrylamide, alginic acid, sodium alginate, potassium alginate,
Propylene glycol alginate, starch,
The water leakage preventive according to claim 3, which is at least one selected from sodium starch glycolate, sodium starch phosphate, methylcellulose, hydroxypropylcellulose, sodium carboxymethylcellulose, polyvinyl alcohol and poly N-vinylacetamide. 5. The superabsorbent polymer gelling agent is a silicate, a water-soluble alkaline earth metal salt, alum, a water-soluble aluminum salt, a water-soluble iron salt, a water-soluble manganese salt, a water-soluble zinc salt, and an alkaline earth metal oxide. The water leakage preventing agent according to any one of claims 1 to 4, wherein the agent is at least one member selected from the group consisting of: 6. The water leakage preventive according to claim 1, wherein the dihydric or higher polyhydric alcohol is at least one selected from monoalkylene glycol, glycerin, ethylene glycol derivatives and pentaerythritol. . 7. A method for preventing water leakage, which comprises injecting the water leakage prevention agent according to any one of claims 1 to 6 into the water leakage inlet with water after spraying.