JPH0734050A - Adhesive - Google Patents

Abstract

PURPOSE:To obtain an adhesive containing a fluorescent agent and a light- storing agent, capable of distinguishing a coated part from an uncoated part because of property capable of radiating in dark place, free from defect of adhesion and useful for adhesion of resin pipes and conduits made of vinyl chloride resin. CONSTITUTION:This adhesive contains fine powders of a stimulable fluorescent agent (e.g. a fluorescent pigment consisting essentially of calcium, barium, magnesium, a tungstic acid salt, etc.) which is a substance capable of absorbing daytime light and emitting light in darkness and a light-storing agent (e.g. zinc sulfide, barium sulfide or calcium sulfide).

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to adhesives. In particular,
The present invention relates to an adhesive suitable for adhering a vinyl chloride resin pipe or a vinyl chloride resin eaves trough.

[0002]

2. Description of the Related Art Conventionally, adhesives have been used in various fields to bond various objects. However, as this adhesive, there are many transparent adhesives and light-colored adhesives. Therefore, it may be inconvenient because the distinction between the adhesive-applied and non-applied adhesive may become unclear, or the boundary between the adhesive-applied area and the adhesive-unapplied area may become unknown. It was

For example, at a construction site where a large number of vinyl chloride resin pipes are connected, an adhesive is applied to the ends of a large number of vinyl chloride resin pipes and the joints of the pipe joints, and the solvent is evaporated to some extent after being left for a while. After that, the vinyl chloride resin pipe and the pipe joint are abutted and bonded, but it is often unclear which end of the vinyl chloride resin pipe or pipe joint the adhesive is applied to. Poor adhesion occurs. Therefore,
When the liquid passes through the vinyl chloride resin pipe after piping in this way, there is a problem that the liquid leaks out.
Also, the same problem occurs when connecting vinyl chloride resin eaves gutters with gutter joints.

Further, when a plywood is manufactured, an adhesive is applied to the veneer and the veneer is adhered to manufacture the plywood. However, since the number of the veneer is large and the plywood is applied over a wide area. It was often unclear which veneer the adhesive was applied to, or which part of a single veneer the adhesive was applied to. Therefore, conventionally, this adhesive has been colored by containing a coloring agent such as a pigment. For example, Shokai 6
JP-A 2-44041 describes a vinyl chloride resin pipe adhesive containing a pigment.

[0005]

However, in the case of an adhesive containing a colorant such as the above-mentioned conventionally known pigment, in a bright place, the difference between the place where the adhesive is applied and the place where the adhesive is not applied can be clearly distinguished, and the application is forgotten. Etc. does not occur, but it cannot be identified in a dark place. In particular, the plumbing work and eaves gutter installation work are often carried out even after it becomes dark in an emergency or when the work is prolonged.

[0006] Although this piping work and eaves trough installation work always involve the work of adhering a vinyl chloride resin pipe or a vinyl chloride resin eaves trough, it becomes dark and the vinyl chloride resin pipe or vinyl chloride resin When adhering the eaves trough, it is unclear whether or not the adhesive has been applied, and there is a problem that adhesion failure easily occurs. Therefore, an object of the present invention is to provide an adhesive that can be clearly discriminated between a place where the adhesive is applied and a place where the adhesive is not applied, even when it becomes dark.

[0007]

[Means for Solving the Problems] The present invention has been made in order to achieve the above-mentioned object, and contains a fluorescent agent and / or a luminous agent.

The fluorescent agent and / or phosphorescent agent in the present invention is a substance which absorbs light when it is bright in the daytime and glows when it becomes dark, and it is an oxide such as calcium, barium, magnesium, cadmium, or sulfide. Compounds, fluorescent pigments containing silicates, phosphates, tungstates, etc. as main components, and light-storing agents such as zinc sulfide, barium sulfide, calcium sulfide, etc. are preferable, and a mixture thereof may be used. In the present invention, the fine powder of the fluorescent agent or the luminous agent is used. The reason is that if the fluorescent agent or the phosphorescent agent is granular or lumpy, the granular or lumpy fluorescent agent or luminous agent will enter between the bonding surfaces of the vinyl chloride resin pipe, and the adhesion will not be performed well. .

[0009]

Since the adhesive of the present invention contains a fluorescent agent and / or a light-storing agent, when it becomes dark, the portion coated with this adhesive is shining, so that there is a coated portion and a non-coated portion. Can be easily identified. Therefore, when the pipe body and the eaves gutter are connected in a dark place, the leakage of the application of the adhesive is eliminated, and the adhesion failure can be prevented.

[0010]

EXAMPLES Next, examples of the present invention will be described. Example 1 An adhesive having the following composition was produced. Vinyl chloride resin 20 parts by weight Tetrahydrofuran 40 parts by weight Cyclohexanone 40 parts by weight Finely pulverized zinc sulfide (fluorescent agent) 0.1 parts by weight Using this adhesive, a vinyl chloride resin pipe is fitted with a vinyl chloride resin pipe joint. Connected This piping work took a long time, so I continued the construction even when it got dark, but since this adhesive glows when it gets dark, it is possible to clearly distinguish the part where the adhesive is applied and the part where it is not applied. There is no application leak. Therefore, a problem due to poor adhesion did not occur after the construction.

Example 2 Using the adhesive used in Example 1, vinyl chloride resin eaves gutters were connected by vinyl chloride resin gutter joints. This gutter work took a long time and it was continued even when it got dark, but since this adhesive shines out when it gets dark, it is possible to clearly distinguish the part where the adhesive is applied and the part where it is not applied, and there is no adhesive leakage. lost. Therefore, a problem due to poor adhesion did not occur after the construction.

[0012]

As described above, since the adhesive of the present invention contains the fluorescent agent and / or the luminous agent, it emits light when it becomes dark. Therefore, it is possible to clearly distinguish the part to which this adhesive is applied and the part to which this adhesive is not applied, and it is convenient that adhesion failure does not occur.

Claims (1)

[Claims] 1. An adhesive used for adhering a vinyl chloride resin pipe or a vinyl chloride resin eaves gutter, which contains a fluorescent agent and / or a light storage agent.