JPS598766A - Colored perlite particle - Google Patents

Abstract

PURPOSE:The titled particles, prepared by forming colored protective layers consisting of a colored inorganic coating material and colloidal silica as a binder on the surfaces thereof, having improved water retaining property, water permeability, strength and water draining property, etc., having improved beautiful appearance, and useful as artificial earthing up, decorative materials, etc. CONSTITUTION:Particles, obtained by incorporating (A) perlite particles, preferably 2-20mm. particle diameter and 0.1-0.5kg/l bulk specific gravity, with (B) a colored inorganic coating material obtained by dispersing colloidal silica as a binder, an aggregate, e.g. calcium carbonate, a colored pigment, e.g. titanium white, and if necessary a viscosity increasing agent, e.g. hydroxyethyl cellulose, a film forming assistant, a dispersing agent, etc. in water under stirring, and having colored protective layers on the surfaces thereof.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a colored material that is useful as artificial soil, decorative material, colored filler, colored aggregate, etc., which has excellent water retention, water permeability, air permeability, strength, drainage performance, etc., and is aesthetically pleasing. The purpose is to provide pearlite particles.

Conventionally, various types of foamed perlite obtained by firing obsidian, pearlite, pinestone, etc. have been used as artificial soil for plants such as canola, fruit trees, and flower petals, or as various fillers and aggregates. Although perlite has excellent water retention, water permeability, and air permeability, it has low strength and easily crumbles into powder even with simple stirring or handling, and its specific gravity is too small to float on water. There is a drawback. Additionally, attempts to color perlite have the problem of harming plants.

The present invention solves the above-mentioned drawbacks, and by providing a colored protective layer made of a colored inorganic paint with colloidal silica as a binder on the surface of pearlite particles, the strength, specific gravity, and coloring of conventional pearlite can be improved. etc. issues have been resolved.

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 obsidian, pearlite, pinestone, etc. to an appropriate particle size, and
It is heated to around 00°C and foamed several times to several tens of times more.
It is commercially available from.

Among these commercially available materials, those preferred for the purpose of the present invention have a particle size of about 2 to 20 mm and a bulk specific gravity of about 0.1 Kf/l.
~0.5 edge/l.

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 its fine aggregate (for example, calcium carbonate, barium sulfate, silica powder, glass powder, clay, talc, kansui stone powder, etc.), soft pigments (e.g. titanium white,
titanium yellow, red iron oxide, yellow iron oxide, ultramarine blue, chromium oxide green, cobalt blue, etc.), thickeners depending on the pericardium (e.g. hydroxyethyl cellulose, methyl cellulose, etc.), membrane-forming agents (e.g. butyl glycol, Kalbi l
-), dispersants, synthetic resin emulsions, etc.
These are dissolved or dispersed in water in appropriate proportions.

By stirring and mixing the colored pearlite particles of the present invention and the above-mentioned colored inorganic paint under mild conditions, the paint uniformly adheres to the surface of the pearlite particles, and this can be obtained by air drying or heating drying. During this coating operation, by further adding various aggregates such as kansui stone powder, pearlite powder, etc., problems such as uniformity of coating and adhesion of particles to each other can be solved. In the present invention, the specific gravity of the pearlite particles increases due to the above-mentioned coating, but the specific gravity of the particles after coating is approximately 0.9/l to 9/l.
It is preferable to use a colored inorganic paint in a proportion such that the ratio is 0.5b7t.

The surface of the colored coated pearlite particles of the present invention obtained as described above is coated with a hard colored layer, so the strength of the particles themselves is significantly improved, and they can withstand normal mixing and stirring actions. Furthermore, it has been found that the colored layer thus formed has sufficient air permeability, water permeability, and drainage properties. The specific gravity of the particles is significantly higher than that of the original pearlite particles, so they sink in 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 perlite particles of the present invention as described above give an excellent decorative effect when used as a culture soil for various plants, especially as a culture soil for glass flower pots for ornamental plants.
Furthermore, it is useful as a decorative material, various colored fillers, colored aggregates, etc.

Next, the present invention will be specifically explained with reference to Examples.

Note that the text in the middle or ``chi'' 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 paints were prepared by changing the type of coloring pigment within this composition range.

Preferred composition Colloidal silica (solid content) 1-10 (parts) Synthetic resin emulsion (solid content) 1-1° bone
Material 50~7゜Colored pigment 1~l.

Thickener (solid content) 0.05-0.2 Coal forming aid 1-2 Dispersant 0.05-02 Water Amount to make the whole 100% Example 2 Obsidian pearlite (particle size approx. 5-iom, Bulk specific gravity 0
．． 8 Ky/t) 80 parts of the blue paint of Example 1 (
180 parts of ultramarine (using ultramarine as a pigment), 100 parts of kansui stone powder, and 30 parts of perlite powder were thoroughly mixed to coat the surface of the pearlite particles, and then air-dried for about 1 day to obtain 350 parts of blue colored pearlite particles of the present invention. Ta.

The specific gravity of the particles was about a.ttt4/l, and the particle size was about 5 to 10 mm. 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.

1. When placed in water, the water permeates through the tubes sufficiently, the water becomes saturated in a few minutes to several tens of minutes, and when taken out of the water, it drains easily, and the pigment does not dissolve into the water at all. Ta.

Example 3 In the same manner as in Example 2, white paint (titanium white was used as a pigment), green paint (chromium oxide green was used as a pigment), and yellow paint (yellow iron oxide was used as a pigment) was used, and each Colored pearlite particles of the present invention having different hues were obtained. These '9 fall products had properties similar to those of Example 2.

Usage Example The colored perlite particles of the present invention obtained in Examples 2 and 3 were mixed in a ratio of white, yellow, blue, and edges 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, let it absorb enough water so that the water remains from the bottom to a height of 4, plant ornamental plants, and observe them in the evening. Leaves, stems, roots? The growth was sufficient and it was effective as a potting soil.

In addition, the soil itself had an excellent aesthetic appearance, with the colors of each ridge mixed in the white particles.

Claims (1)

[Claims] Colored pearlite particles are provided with a colored protective layer made of a colored inorganic paint containing colloidal silica as a binder on the surface of the pearlite particles.