JP6362211B2 - Sealant for buildings - Google Patents

Description

The present invention relates to a sealant used to fill a gap in a building and surrounding structures, and more specifically, is used by being extruded by being filled into a tube provided with a nozzle, or in a cylindrical shape It is related with the sealing agent with which the cartridge of this is filled and extruded with a gun. Incidentally, the sealant of the present invention, putty, caulks, joint agents, Ru possible der be referred to as a filler.

  Generally, a building sealant mainly comprises an extender pigment as an aggregate and a water-soluble emulsion resin as a binder, and this is the time after construction as shown in FIG. 4 (B). As the process progresses, the resin shrinks and a so-called thinning phenomenon is likely to occur, in which gaps and cracks occur (in FIG. 4, symbols A and B indicate building components, and symbol C indicates a sealing agent).

  Therefore, measures to prevent flesh thinning have been considered. As an example, Patent Document 1 uses hollow lightweight aggregates such as silica balloons, shirasu balloons, and pearlites as aggregates, and further contains methylcellulose. Is disclosed. Further, Patent Document 2 discloses that a glassy balloon is used as an aggregate and a surfactant is further added.

  When using an inorganic hollow lightweight aggregate such as a glass balloon, the aggregates are in contact with or close to each other, so even if the resin shrinks, the bulk of the sealing agent is hardly reduced, and as a result, It can prevent flesh thinning. Moreover, if a hollow lightweight aggregate is used, it can also contribute to weight reduction of a sealing agent.

Japanese Patent Publication No. 61-29388 Japanese Patent Laid-Open No. 03-232781

Now, sealing agents are often used for repairing foundations and foundations in wooden houses, and are often used in places with high humidity. For this reason, termites may enter the gap where the sealant is used. And when the thinning phenomenon has generate | occur | produced in the sealing agent C like FIG. 4 (B), the termite D will enter easily from the clearance gap E. FIG.

  On the other hand, when using a glass balloon or the like as a sealing agent to suppress meat thinning as in Patent Documents 1 and 2, it seems that termite intrusion is prevented at first glance, The sealant may also be damaged by termites, and the termites may enter the gaps E between the members, and the wood behind them may be damaged.

  In other words, the sealing agent itself does not serve as a termite feed, but since the sealing agent is softer than the building components, the termites invade while biting the sealing agent. In other words, termites invade the part of the sealing agent as ant roads in order to access the wood.

  The present invention has been made in view of such a current situation, and an object thereof is to provide a sealing agent excellent in a sealing function and an ant-proof function.

The present invention can either be used by extruding filled in tubes provided with a nozzle, or, is directed to a sealing agent is filled in a cylindrical cartridge is used in extruded at cancer, the sealing agent ,
" The inorganic fine powder of the hollow structure or the porous structure is used as an aggregate, and this aggregate and a hydrophilic organic binder are mixed, and further, a powder of a neonicotinoid-based anti-anticide is added. "
This is the basic configuration.

In the above basic configuration, the aggregate is adjusted to have a particle size of 40 to 60 μm, and the mixing ratio is set to 30 to 40 wt% when wet and 65 to 75 wt% when dry. On the other hand, the powder of the termite-proofing agent is composed of fine powder having a particle size smaller than that of the aggregate.
The mixing ratio of the aggregate is particularly preferably set to be about 35 wt% when wet and 70 wt% when dry. The ratio of the organic binder is preferably 25 to 30 wt% when wet, and particularly preferably about 30 wt%. The organic binder is preferably a hydrophilic emulsion resin as in the case of a normal sealant, and in this case, water is also added. The present invention does not prevent the addition of other auxiliaries such as pigments.

  As the aggregate, glass balloon, shirasu balloon, perlite, fly ash, talc, calcium chloride and the like can be used. In terms of quality stability, strength, and weight reduction, it can be said that artificial glass balloons and fly ash are excellent. An inorganic material having a porous structure is also suitable, but in this case, the porous structure includes both an independent number of pores and a continuous number of pores. A single type of aggregate may be used, or a plurality of types may be mixed and used. It is also possible to use a hollow structure and a porous structure in combination.

The value Onikochinoido based termiticide include thiamethoxam and Imidakutopurido and clothianidin. Only one kind of these anti-anticides may be added, or a plurality of kinds may be mixed and added. In the invention of claim 2, thiamethoxam having a concentration of 600 to 1000 ppm is used as the termite-proofing agent.

As the organic binder, various compositions can be used. In claim 3, an acrylic emulsion resin is used .

  In the present invention, since the aggregates constituting the sealing agent are in contact with each other or close to each other, even if the organic binder shrinks after construction, there is almost no decrease in bulk. Can maintain sex. Further, since the aggregate has a balloon structure or a porous structure, it contributes to weight reduction. And since the termite-proofing agent is added to the sealant, termites can be prevented from entering the sealant, but since the termite-proofing agent is a neonicotinoid, it ensures high safety against human livestock. However, it exhibits a high ant protection effect.

In other words, the sealant does not lose weight and the gaps in the building etc. are tightly sealed, so termites must eat the sealant in order to enter the gaps in the building etc. As a result, the termites cannot go forward, thus preventing the entry of termites. And neonicotinoid-based ant preventives such as thiamethoxam are slow-acting, and termites that have taken in or adhered to the body of the ant preventives can also be used to exterminate termites that live in the nests.
Further, in the present invention, since the termite-proofing agent is smaller than the aggregate, there is an advantage that the termite-proofing agent is dispersed throughout and the adhesion to termites can be improved while ensuring low density (low specific gravity). Further, it can be said that the dispersibility of the termite-proofing agent is improved upon stirring in the production process.

Thiamethoxam is particularly excellent in high safety against human livestock and high ant protection performance, and therefore, as in claim 2, it is preferable to use thiamethoxam as an ant protection agent. When thiamethoxam is used, the concentration is preferably 600 to 1000 ppm. If it is too small, the effect is poor, but even if it is used excessively, there is no big difference in the effect. In view of the relationship between the ant-proof effect and cost, 500 to 800 ppm is particularly preferable.

  Although various organic binders can be used, when an acrylic emulsion resin conventionally used as in claim 3 is employed, the reliability is excellent. It is also possible to paint after drying.

  In addition, the sealing agent of this invention can be used for the place which does not require ant protection. That is, use as a simple sealing material is also possible. Thus, for example, both concrete repair and wooden house repair can be used. In this way, since there is no need to prepare different types according to applications, there is an advantage that the labor of management and construction can be reduced.

It is a schematic diagram of a sealing agent. It is a figure which shows an example of packaging. It is a figure which shows an example of a construction state. It is a figure which shows the change after construction of the conventional sealing agent.

  Next, an embodiment of the present invention will be described. FIG. 1 is a schematic diagram of a sealant 1. As shown in this figure, the sealant 1 is mainly composed of an aggregate 2 and an organic binder (solid resin component) 3, and thiamethoxam 4 as an anti-ant component. Is added. Although it cannot be displayed in the drawing, it also contains pigments for coloring.

As the aggregate 2, a glass balloon produced by firing fine glass spheres is used, and the particle size is adjusted to approximately 40 to 60 μm. In this case, the whole or most of the aggregate 2 is adjusted in particle size to 40 to 60 μm. Specifically, the particle size can be adjusted by passing through a 60 μm sieve and a 40 μm sieve. Since the artificial glass balloon is excellent in strength, it has an advantage that it does not break during sieving or mixing.

  The organic binder 3 uses an acrylic emulsion resin. Precisely, it is an emulsion in which an acrylic resin is suspended in water, and therefore consists of a resin component and water before drying. Since the content ratio of thiamethoxam 4 and the pigment is very small, from the viewpoint of the weight ratio, the sealing agent 1 is substantially composed of the aggregate 2 and the organic binder 3 except for water. . The ratio of the resin component in the organic binder 3 in a wet state is about 35 to 40 wt%.

  As for the ratio at the time of drying, the aggregate 2 is about 70 wt% and the organic binder (acrylic resin) 3 is about 30 wt%. Therefore, when wet, it is approximately 70 parts by weight of aggregate, 80 parts by weight of acrylic emulsion resin, and 50 parts by weight of water. The amount of thiamethoxam 4 added was about 1000 ppm when dried.

  The manufacturing method of the sealing agent 1 is the same as before, and is manufactured by putting the aggregate 2 in the fine powder state, the organic binder 3 and water into a container and kneading. An appropriate amount of water may be mixed in advance with the organic binder 3, or may be stirred and mixed while adding water as needed. Thiamethoxam 4 is a powder, and may be mixed with the aggregate 2 and stirred in advance, or may be dissolved in the organic binder 3 or water in advance. In general, the pigment is dissolved in the organic binder 3.

Sealant 1, 2, are packaged in a tube 6 having a thin nozzle 5. Since thus a tube system, as shown in FIG. 3, Ru can be easily injected into the narrow gap. Packaged in a cylindrical cartridge made of tree butter made or paper tube, in the space between it can be injected into the construction site in a dedicated cancer, for example, a floor or a ceiling, or wall and wall In this work, it may be difficult or impossible to use the gun. On the other hand, when the tube 6 of FIGS. 2 and 3 is operated, there is an advantage that the construction in a narrow place can be easily performed.

  If time passes after inject | pouring the sealing agent 1 into a construction place, water will evaporate and only the solid aggregate 2 and the resin component will remain. That is, the organic binder 3 is cured. Thereby, the clearance gap E between the members A and B is sealed firmly.

The aggregate 2 made of a glass balloon, which is an inorganic material, occupies a considerable amount of the volume of the sealant 1, but the adjacent aggregates 2 are in contact with each other or close to each other. Even when the sealant shrinks over time, the apparent size of the sealing agent 1 is hardly changed, and therefore, the phenomenon of flesh thinning does not occur at all. Accordingly, it is possible to maintain high sealing performance against rainwater and the like, and when used in a wooden building, it is possible to prevent termites from entering between the members A and B.

  In the case of a wooden building, termites may eat the sealant 1 in order to build ant roads. However, since the thiamethoxam 4 is added to the sealant 1 as an anti-anticide, the termites use the sealant 1. I can't eat. And since Thiamethoxam 4 is slow-acting, the termites that have applied the sealant 1 return to the body by taking Thiamethoxam 4 into the body or attaching it to the body. Metastasis can be used to control termites even in the nest.

  If the particle size of the aggregate 2 is too large, for example, 100 μm or more, the aggregate 2 becomes an obstacle and the contact (adhesiveness) of the thiamethoxam 4 to termites is reduced, and the strength of the aggregate 2 is small. Therefore, there is a problem that the sealing agent 1 is easily damaged in the manufacturing process. When the aggregate 2 is excessively refined, for example, 20 μm, the weight of the aggregate 2 increases, and the significance of using the hollow aggregate (weight reduction and fleshiness suppression) is lost.

  On the other hand, when adjusted to 40 to 60 μm larger than thiamethoxam 4 as in this embodiment, thiamethoxam 4 is dispersed throughout, ensuring low density (low specific gravity) and attaching to termites. There is an advantage that the performance can be improved. Moreover, it can be said that the dispersibility of thiamethoxam 4 is improved during stirring in the production process.

  The present invention can be embodied in various ways other than the above-described embodiment.

  The present invention can be applied to a sealing agent. Therefore, it can be used industrially.

1 Sealant 2 Aggregate (Glass Balloon)
3 Organic binder (acrylic emulsion resin)
4 thiamethoxam (anti-anticide)
5 Nozzle 6 Tube

Claims (3)

A sealing agent that is filled into a tube equipped with a nozzle and pushed out or used, or is filled into a cylindrical cartridge and pushed out with a gun.
As an aggregate of inorganic fine powder of a hollow structure or porous structure, this aggregate and a hydrophilic organic binder are mixed, and further, a neonicotinoid-based anti-anticide powder is added,
The aggregate is adjusted to have a particle size of 40 to 60 μm, and the mixing ratio is set to 30 to 40 wt% when wet and 65 to 75 wt% when dry ,
The powder of the termite-proofing agent is composed of fine powder having a particle size smaller than that of the aggregate,
Sealant for buildings.
As the anti- anticide, thiamethoxam having a concentration of 600 to 1000 ppm is used ,
The building sealant according to claim 1. The organic binder is an acrylic emulsion resin.
The building sealant according to claim 1 or 2.

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