JPS61264066A - Antifouling coating compound for land gastropoda - Google Patents

Abstract

PURPOSE:The titled coating compound useful for flowerpots, flower beds, etc., to control food damages of land Gastropoda, having controlling effects for a long period, containing metallic copper powder. CONSTITUTION:Preferably 50-75wt% metallic copper powder (preferably 10-50mum particle diameter) is added to a coating compound to give the aimed antifouling coating compound. A vinyl acetate polymer, ethylene/vinyl acetate copolymer, acrylic acid and/or methacrylic acid ester homopolymer or copolymer, etc., are preferable as a vehicle for the coating compound.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a pest control paint applied to flowerpots, flowerbeds, tree trunks, etc. to prevent feeding damage from terrestrial gastropods (slugs, snails, etc.). .

It is already known that copper, copper compounds, or copper alloys are effective for controlling gastropods such as slugs. For example, Japanese Patent Publication No. 4L-3675 describes the effect of copper and copper alloys on repelling gastropods, and Japanese Patent Application Laid-open No. 117775-1980 describes the use of copper-deposited films to repel and control slugs. This is disclosed.

However, no satisfactory method has been proposed as to how to use copper or copper alloys to control gastropods. For example, in a method such as wrapping a copper wire around a flower pot, the flower pot has an inclination, so the wrapped wire tends to come off, and it cannot be applied to a flat area such as a wall. Furthermore, even in the method of using a vapor-deposited copper film, it is difficult to wrap it around an inclined part, and it is impossible to apply it to a flat part such as a wall or a zelkova.

Also, as a slug control agent, drugs containing metaldehyde as a main component are known, but the effective drugs of these drugs are washed out when rinsing with water. Therefore, in order to expect a continuous effect, it is necessary to administer the drug each time. Therefore, there is currently no satisfactory method for controlling slugs.

The present invention provides a paint that has a long-term pesticidal effect on gastropods.

The present invention provides a paint for controlling gastropods containing metallic copper powder.

In the present invention, metallic copper powder is used as an active ingredient.

The particle size of the metallic copper powder is preferably 5 to 70 Bm, particularly 10 to 50 μm. When the particle size is smaller than 1071z, the copper, copper alloy or copper compound is completely covered with the resin particles, and therefore a satisfactory result is not necessarily obtained. Also, 70
If the diameter is less than 2 μm, it becomes difficult to prepare it as a paint.

The content of metallic copper in the paint is 25% by weight or more, preferably 50 to 75% by weight. If it is less than 25-fold fingers, the control effect will not be sufficient, and if it is more than 75% by weight, the properties as a paint will deteriorate, which is not preferable.

The copper component of metallic copper gradually dissolves from the coating resin and exhibits a control effect against gastropods.

Particularly suitable paint resin vehicles for preparing the pest control paint of the present invention include ethylene/vinyl acetate copolymer, acrylic acid and/or methacrylic acid ester alone or copolymer, polyester resin, urethane resin. , Evokin resin, alkyd resin, natural rubber, etc. Particularly preferred are ethylene/vinyl acetate copolymers, acrylic acid and/or methacrylic acid ester single or copolymers, vinyl acetate polymers, and the like.

In order to effectively control gastropods, it is necessary to increase the copper concentration on the coating surface. The effect of the present invention is that when metal copper dispersed in the paint comes into contact with moisture in the air or carbon dioxide, etc.17, it undergoes a chemical change and becomes partially water-soluble, causing blooming on the paint surface or copper It is thought that a large number of metals protrude from the surface of the coating film, and this is effective in controlling slugs and the like. Vehicle resins that particularly effectively exhibit such effects include ethylene/vinyl acetate copolymers, acrylic and/or methacrylic acid alone or copolymers, and vinyl acetate polymers. The paint may be water-based, emulsion, or solvent-based, but if it is water-based, it may be preferable to add an ultraviolet crosslinking agent or the like to make it insoluble so that it will not dissolve in rain or pond water. Of course, for temporary use, an aqueous solution is sufficient. Moreover, the paint is applied by brush, and by aerosol method.The present invention will be explained below with reference to Examples.

Ethylene/vinyl acetate copolymer emulsion (manufactured by Showa Kobunshi Kagaku Co., Ltd.: Polysol EVA-T-550 (50%)
Three types of paints were prepared by blending 25% by weight, 50% by weight, and 75% by weight of metallic copper powder (30 μm diameter reagent-grade manufactured by Kishida Chemical Co., Ltd.) in emulsion). Apply this paint to the inner surface of a vinyl chloride container (20cxx20cix 20cm) at a height of 5cm from the bottom (application thickness 20μm),
A total of 620 nanocrops were placed at the bottom of the container, making it impossible for them to escape unless they crossed the painted surface. The light was turned off at room temperature, and after 24 hours, the number remaining at the bottom was counted to evaluate the repellent effect. The results are shown in Table-1.

Table 1: Moxibustion Skin Rice According to the present invention, even if copper powder is coated with a resin, its gastropod-controlling effect is not lost and it can be used as a paint for controlling gastropods. These paints can be applied to flower pots, communal houses, greenhouses and shelves, sheds, etc. to control gastropods.

Claims (1)

[Claims] 1. A pesticidal paint for land gastropods containing metallic copper powder. 2. The pest control paint according to item 1, containing 20 to 80% by weight of copper. 3. The pest control paint according to item 1, wherein the resin vehicle for the paint is selected from vinyl acetate polymers, ethylene/vinyl acetate copolymers, acrylic acid and/or methacrylic acid esters alone or copolymers.