JPS6225323B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to colored artificial potting soil that has excellent water retention, water permeability, air permeability, strength, drainage properties, etc., and is aesthetically pleasing.

Conventionally, various types of foamed perlite obtained by firing olivine, pearlite, pinestone, etc. have been used as artificial culture soil for plants such as canola, fruit trees, and flower petals. Although it has excellent water permeability and air permeability, it has low strength and is easily crushed into powder even with simple stirring or handling.
The disadvantage is that it has a low specific gravity and floats on water. Attempts have also been made to color perlite, but simple coloring poses a problem in that the coloring agent dissolves into water and harms plants.

The present invention solves the above-mentioned drawbacks and improves the strength, specific gravity, coloring, etc. of conventional pearlite by providing a colored protective layer made of a colored inorganic paint with colloidal silica as a binder on the surface of pearlite particles. To provide colored artificial soil that solves problems.

To explain the present invention in detail, the pearlite used in the present invention is a type of natural glass, and is made by crushing scorchite, pearlite, pinestone, etc. to an appropriate particle size, and heating it to about 800°C to 1000°C. However, it is foamed several times to several tens of times, and is commercially available from Toho Perlite Kogyo Co., Ltd. and Nippon Perlite Kogyo Co., Ltd. Among these commercially available materials, those preferred for the purposes of the present invention have a particle size of about 2 to 20 mm and a bulk specific gravity of about
It is 0.1Kg/~0.5Kg/.

The colored inorganic paint used in the present invention is one that uses colloidal silica (for example, Cataloid S, Snowtex, etc.) as a binder, and has other aggregates (for example, calcium carbonate, barium sulfate, silica powder, glass powder, clay, etc.). talc, kansui stone powder, etc.), colored pigments (e.g. titanium white, titanium yellow,
red iron oxide, yellow iron oxide, ultramarine, chromium oxide green, cobalt blue, etc.), thickeners (e.g., hydroxyethyl cellulose, methyl cellulose, etc.), and film-forming aids (e.g., butyl glycol, carbitol, etc.) as necessary. , dispersant, synthetic resin emulsion, etc., in an appropriate ratio,
It is dissolved or dispersed in water.

The colored artificial culture soil of the present invention is produced by stirring and mixing the above-mentioned perlite particles and the above-mentioned colored inorganic paint under mild conditions, so that the colored inorganic paint uniformly adheres to the surface of the perlite particles, and then the colored inorganic paint is air-dried or heated. Obtained by drying. During this coating operation, problems such as uniformity of coating and adhesion between particles can be solved by adding various aggregates such as kansui stone powder or pearlite powder. In the present invention, the specific gravity of the pearlite particles increases due to the above coating, but the specific gravity of the particles after coating is approximately 0.3Kg/~0.5Kg/
It is preferable to use colored inorganic paints in proportions such that:

The colored artificial soil of the present invention obtained as described above has its surface coated with a hard colored layer, so the strength of the particles themselves is significantly improved and can withstand normal mixing and stirring action. Furthermore, it has been found that the colored layer thus formed has sufficient air permeability, water permeability, and drainage properties. In addition, since the specific gravity of the particles is significantly higher than that of the original pearlite particles, they sink into water and stabilize in a short time. Furthermore, since the colored pigment is fixed in the colored layer, there is no problem of it eluting into water.

The colored artificial soil of the present invention as described above provides an excellent decorative effect when used as artificial soil for various plants, especially as artificial soil for glass flower pots for ornamental plants.

Next, the present invention will be specifically explained with reference to Examples. Note that "%" or "%" in the text is based on weight.

Example 1 The preferred composition of the colored inorganic paint used in the present invention is as follows, and four types of inorganic paints were prepared by changing the type of coloring pigment within this composition range.

Preferred composition Colloidal silica (solid content) 1 to 10 parts Synthetic resin emulsion (solid content) 1 to 10 parts Aggregate 50 to 70 parts Coloring pigment 1 to 10 parts Thickener (solid content) 0.05 to 0.2 parts Film forming aid 1 to 2 parts Dispersant 0.05 to 0.2 parts Water Amount to make the total 100 parts Example 2 80 parts of heliumite-based pearlite (particle size approximately 5 to 10 mm, bulk specific gravity 0.3 Kg/), blue inorganic paint of Example 1 ( (Using ultramarine as a pigment), 100 parts of kansui stone powder, and 30 parts of perlite powder were thoroughly mixed, and after coating the surface of perlite particles, the mixture was air-dried for about 1 day to obtain 350 parts of blue colored artificial culture soil of the present invention. Ta. The specific gravity of these particles is approximately 0.4Kg/, and the particle size is approximately 5
It was ~10mm. The strength of these particles was significantly improved, and whereas the raw material pearlite was easily broken by finger pressure, it was difficult to break them by finger pressure. Furthermore, when placed in water, water penetrated sufficiently and the water became saturated in a few minutes to several tens of minutes, and when taken out of water, it was easily drained, and the pigment did not dissolve into water at all.

Example 3 In the same manner as in Example 2, white inorganic paint (titanium white was used as the pigment), green inorganic paint (chromium oxide green was used as the pigment), and yellow inorganic paint (yellow iron oxide was used as the pigment) were used. , colored artificial soil of the present invention of each hue was obtained. These granules had properties similar to those of Example 2.

Usage Example The colored artificial soil of the present invention obtained in Examples 2 and 3 was mixed in a ratio of white, yellow, blue, and green at a ratio of 6:2:1:1, and the mixture was filled into a transparent glass flower pot. ,
Add water containing an appropriate amount of liquid fertilizer and let it absorb enough water so that the water remains 1/3 of the way from the bottom, plant ornamental plants, and observe for a month.
The growth of stems and roots was sufficient and it was effective as an artificial culture soil. In addition, the artificial soil itself had a variety of colors mixed into the white particles, giving it an excellent appearance.

Claims (1)

[Claims] 1. Colored artificial soil having a bulk specific gravity of 0.3 to 0.5 Kg/, which is obtained by providing a colored protective layer made of a colored inorganic paint with colloidal silica as a binder on the surface of expanded perlite particles having a bulk specific gravity of 0.1 to 0.5 Kg/.