JP2636692B2 - Rush treatment agent - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rush treatment agent for imparting a unique color tone and aroma to rush used for tatami mats and the like.

[0002]

2. Description of the Related Art Grass used for tatami mats or the like is usually immersed in a solution of so-called dyed soil suspended in water immediately after harvesting to perform mud dyeing. By drying it, the color tone and aroma peculiar to rush are maintained, and the moisture is controlled during storage. As the above-mentioned dyed soil, natural dyed soil such as Awaji dyed soil and Fukuoka dyed soil is used. However, since it is a natural product, it is difficult to stably supply dyed soil of uniform quality.

[0003] Further, since a large amount of natural dye is used for mud dyeing, a large amount of dust is generated in drying, storing, unloading, and fiber-making of rush, thus deteriorating the working environment. Furthermore, the use of only natural dyed soil is insufficient for adhesion to rush and color tone, and has a problem in quality. Thus, various synthetic dyes have been developed to replace natural dyes. For example, those containing goethite, magnetite, titanium oxide, calcium carbonate and the like as main components (JP-A-49-36911); and those containing a dispersion or emulsion of an organic polymer substance as an essential component (JP-A-50-369). No. 4313); a composition mainly composed of titanium oxide containing 20% or less of iron (JP-A-48-99409);
A water-soluble dye adhered to the surface of a mineral coarse particle having a particle size composition occupying 90% or more in the range of m to 3 mm (Japanese Patent Application Laid-Open No. 5-9397); mainly composed of titanium oxide, acid clay, and a surfactant (Japanese Patent Application Laid-Open No. 2-28266); those containing titanium oxide, gabbro powder and a powdery surfactant as main components (Japanese Patent Application Laid-Open No. 62-246703); fine powdered titanium oxide, alkaline earth Those mainly containing carbonates or sulfates of similar metals, coloring pigments and dyes (Japanese Patent Publication No. 52-139); those mainly containing dyed soil, colored pigments, titanium oxide, ligninsulfonic acid or salts thereof (Japanese Unexamined Patent Publication No. Hei 4-128003); those containing, as main components, dyed soil, yellow iron oxide, copper phthalocyanine blue, copper phthalocyanine, titanium oxide, ligninsulfonic acid or a salt thereof (Japanese Unexamined Patent Publication No. 3-18). 505 JP), and the like.

[0004] However, all of these treating agents are used by mixing with natural dyed soil, and the problem of dust has not been solved because the amount of natural dyed soil is still large. Further, even when the above-mentioned synthetic soil is used in combination, adhesion to rush is not sufficient, and it is insufficient to impart a color tone, aroma and texture peculiar to rush. A main object of the present invention is to solve the above technical problems and to provide a rush treatment agent that can reduce the amount of natural dyed soil used.

Another object of the present invention is to provide a herbicidal agent which has improved adhesion to rush, retains the fragrance and texture peculiar to rush, and is not capable of treating grass with excellent color.

[0006]

Means and Action for Solving the Problems The present inventors have conducted intensive studies to achieve the above object, and as a result, (1)
(2) The use of surfactants in combination with synthetic soils containing titanium oxide and zeolite as main components improves the dispersibility of natural and synthetic soils in rush. The present inventors have found a new fact that the adhesion to rush is improved, and have completed the present invention.

That is, the rush treatment agent of the present invention is characterized in that 0.1 to 30 parts by weight of zeolite and 0 to 5 parts by weight of a surfactant are added to 100 parts by weight of titanium oxide. By using the rush treatment agent of the present invention, it is possible to significantly reduce the amount of natural dye used in combination with synthetic dye, and to obtain grass with excellent fragrance and texture that retains the unique fragrance and texture. it can.

[0008] The rush treatment agent of the present invention has a cultivated area of 10
Although 8 to 20 kg is used per a, it is possible to reduce the amount of natural dye used in combination from the conventional 600 kg to 480 to 120 kg. Therefore, the amount of dust is reduced, which is preferable in terms of resource saving. The titanium oxide used in the present invention is not particularly limited, and may be any of anatase type and rutile type. The particle size of titanium oxide is also not particularly limited, and is generally 0.1 to
Those having a thickness of 0.3 μm can be suitably used.

The zeolite may be either a natural zeolite or a synthetic zeolite, but it is preferable to use a synthetic zeolite from the viewpoint of uniform quality and economy. There are various types of synthetic zeolites,
In the present invention, in particular, the chemical formula M ₂ O.Al ₂ O _3.
It is preferable to use a crystalline aluminosilicate represented by 2SiO ₂ · 4.5H ₂ O (where M is Na or K).

Such a zeolite generally has an ion-exchange ability, and captures hardness components (Ca ²⁺ , Mg ^2+, etc.) eluted from a natural dye used together with rush treatment to disperse the natural dye. -It is thought that it promotes suspension and maintains the dispersion of titanium oxide, which is the main component, and plays a role in promoting deposition on rush. Since zeolite does not have solubility in water, the particle diameter is preferably fine, about 10 μm or less, and preferably 1-2 μm.

The amount of zeolite used is 0.1 to 30 parts by weight, preferably 1 to 10 parts by weight, per 100 parts by weight of titanium oxide.
Parts by weight. If the amount of zeolite is less than 0.1 parts by weight, the dispersion and suspension of the natural and synthetic soils will be poor, causing poor adhesion to rush and color unevenness. On the other hand, when the amount of zeolite used exceeds 30 parts by weight, a phenomenon occurs in which synthetic and natural dyed soils flow down without depositing on the grass.

The surfactant used in combination with zeolite includes at least one selected from sodium tripolyphosphate, sodium polyacrylate surfactant and sorbitan nonionic surfactant. The sodium tripolyphosphate is not particularly limited, and any commercially available one may be used. The sodium polyacrylate surfactant slightly changes its properties depending on the average degree of polymerization, but any of them may be used in the present invention. As the sorbitan nonionic surfactant, it is preferable to use a polyoxyethylene sorbitan ester having an HLB of 8 or more.

All of these surfactants are water-soluble and play a role in assisting the dispersing / suspending action of zeolite. The surfactant is used in an amount of 0 to 5 parts by weight, preferably 0.1 to 100 parts by weight of titanium oxide.
It is 0.5 to 1 part by weight. If the amount of the surfactant exceeds 5 parts by weight, the washing action of the surfactant becomes large, and a phenomenon occurs in which synthetic and natural soil does not adhere to the rush and flows down, which is not preferable.

In the present invention, the surfactant is not always a necessary component, but by using the surfactant, particularly when dyeing rush to a desired color tone, an aqueous solution of the surfactant described below is prepared. At this stage, there is an advantage that the colorant can be easily dispersed in the aqueous solution. Examples of the colorant include, but are not limited to, green pigments such as copper phthalocyanine green pigment, C.I.
I. Blue dyes such as Basic Blue 3 dye are exemplified.

The surfactant may be added to the treating agent as it is. However, in order to improve the dispersibility of the colorant, and to improve the adhesion to rush and the color tone of rush, the surfactant is added to the treating agent in powder form. It is preferable to mix them. To obtain a powdered surfactant,
First, an aqueous solution of a surfactant having a predetermined concentration is prepared, and then white carbon is added and stirred to be powdered. that time,
If a colorant is used, the required amount is dissolved in an aqueous solution of a surfactant. The amount of white carbon added is 10 to 210 parts by weight, preferably 20 to 100 parts by weight, per 100 parts by weight of the aqueous solution of the surfactant. The particle size of the obtained powdery surfactant is not particularly limited, but is usually preferably adjusted to about 10 to 1000 μm.

The obtained powdery surfactant is mixed with a predetermined amount of titanium oxide and zeolite, and crushed if necessary.
The rush treatment agent of the present invention is obtained. When treating the grass using the rush treatment agent of the present invention, the rush treatment agent of the present invention may be used alone by suspending it in water, but is usually used by mixing with natural dyed soil. Is preferred. Specifically, water 15
By mixing 120 to 480 parts by weight of the natural dyed soil and 5 to 50 parts by weight of the rush treatment agent of the present invention with respect to 00 parts by weight, a dispersion for rush treatment is prepared. The treatment of rush may be carried out in accordance with a conventional method, and the fresh grass immediately after harvest is immersed in the dispersion for rush treatment and stained with mud, then pulled up from the dispersion and dried in the sun. The immersion time of the rush in the dispersion may be about 30 seconds to 20 minutes at room temperature. The use of the above-mentioned dispersion liquid for fresh grass is suitably about 4 to 6 times per weight of immersed fresh grass. Thus, rush having a unique color tone and fragrance without color unevenness is obtained.

[0017]

EXAMPLES Next, the rush treatment agent of the present invention will be described with reference to Examples and Comparative Examples. Example 1 Titanium oxide (“R-310” manufactured by Sakai Chemical Industry Co., Ltd.) 1
After mixing 10 parts by weight of synthetic zeolite (“Toyo Builder GSL-1000” manufactured by Tosoh Corporation) with 00 parts by weight, the mixture was pulverized with an atomizer to obtain a rush treatment agent. Example 2 Titanium oxide (“R-310” manufactured by Sakai Chemical Industry Co., Ltd.) 1
30 parts by weight of synthetic zeolite ("Toyo Builder GSL-1000" manufactured by Tosoh Corporation) was mixed with 00 parts by weight, followed by pulverizing with an atomizer to obtain a rush treatment agent. Example 3 (1) 60 parts by weight of water was charged into a homomixer, and 10 parts by weight of sodium tripolyphosphate, polyoxyethylene sorbitan monooleate ("Reodol TW-O" manufactured by Kao Corporation) was used.
120 ") and 10 parts by weight of a blue dye (CI Basic Blue 3) were added and stirred at room temperature for 30 minutes to dissolve to obtain a surfactant aqueous solution containing a blue dye.

(2) Then, 50 parts by weight of white carbon (specific surface area 230 m ² / g) were charged into a supermixer, and 50 parts by weight of the above-mentioned aqueous surfactant solution was added thereto with stirring to obtain a powdery interface containing a blue dye. An activator was obtained. (3) 10 parts by weight of this powdery surfactant is mixed with 100 parts by weight of titanium oxide ("R-310" described above) and 10 parts by weight of synthetic zeolite ("Toyobuilder GSL-1000" described above), Crushed with an atomizer to obtain a rush treatment agent. Example 4 (1) In 70 parts by weight of water, 10 parts by weight of sodium polyacrylate ("Aqualic DL-100" manufactured by Nippon Shokubai Co., Ltd.) and polyoxyethylene sorbitan monooleate (the above-mentioned "Rheodor TW") -O120 ") and 10 parts by weight of a blue dye (CI Basic Blue 3) were dissolved in the same manner as (1) of Example 3 to obtain an aqueous surfactant solution containing a blue dye.

(2) Then, using 50 parts by weight of white carbon (specific surface area: 90 m ² / g) and 50 parts by weight of the aqueous surfactant solution, a blue dye was prepared in the same manner as in (3) of Example 3. The resulting powdered surfactant was obtained. (3) 10 parts by weight of this powdery surfactant is mixed with 100 parts by weight of titanium oxide ("R-310" described above) and 10 parts by weight of synthetic zeolite ("Toyobuilder GSL-1000" described above), A rush treatment agent was obtained in the same manner as in Example 3, (3). Example 5 (1) 70 parts by weight of water, 20 parts by weight of sodium tripolyphosphate and a green pigment [copper phthalocyanine green (Pigment Gr
een 7)] A surfactant aqueous solution containing a green pigment was obtained in the same manner as (1) of Example 3 using 10 parts by weight.

(2) Then, 50 parts by weight of white carbon (specific surface area: 230 m ² / g) and 50 parts by weight of the aqueous solution of the surfactant
A powdered surfactant containing a green pigment was obtained in the same manner as in Example 3, (2), using the same amount by weight. (3) 10 parts by weight of this powdery surfactant is mixed with 100 parts by weight of titanium oxide ("R-310" described above) and 1 part by weight of synthetic zeolite ("Toyobuilder GSL-1000" described above), A rush treatment agent was obtained in the same manner as in Example 3, (3). Example 6 (1) 70 parts by weight of water, 20 parts by weight of sodium polyacrylate ("Aqualic DL-100" described above), and 10 green pigments (copper phthalocyanine green (Pigment Green 7))
Using a part by weight, a surfactant aqueous solution containing a green pigment was obtained in the same manner as in (1) of Example 3.

(2) Then, 50 parts by weight of white carbon (specific surface area 230 m ² / g) and 50 parts by weight of
A powdered surfactant containing a green pigment was obtained in the same manner as in Example 3, (2), using the same amount by weight. (3) 10 parts by weight of this powdery surfactant is mixed with 100 parts by weight of titanium oxide ("R-310" described above) and 1 part by weight of synthetic zeolite ("Toyobuilder GSL-1000" described above), A rush treatment agent was obtained in the same manner as in Example 3, (3). Example 7 (1) 70 parts by weight of water, 20 parts by weight of sodium polyacrylate ("Aqualic DL-100" described above), and 10 green pigments (copper phthalocyanine green (Pigment Green 7))
Using a part by weight, a surfactant aqueous solution containing a green pigment was obtained in the same manner as in (1) of Example 3.

(2) Then, 50 parts by weight of white carbon (specific surface area: 230 m ² / g) and 50 parts by weight of the aqueous surfactant solution
A powdered surfactant containing a green pigment was obtained in the same manner as in Example 3, (2), using the same amount by weight. (3) 100 parts by weight of titanium oxide (“R-650” manufactured by Sakai Chemical Industry Co., Ltd.) and 10 parts by weight of the powdery surfactant and synthetic zeolite (Toyo Builder GSL-100 described above)
0 ") was mixed with 0.5 part by weight to obtain a rush treatment agent in the same manner as in Example 3, (3). Example 8 A rush treatment agent was obtained in the same manner as in Example 7, except that the amount of the synthetic zeolite was changed from 0.5 part by weight to 0.1 part by weight. Comparative Example 1 Synthetic zeolite ("Toyo Builder GSL-100") was added to 100 parts by weight of titanium oxide ("R-310" described above).
0 ") 35 parts by weight were mixed and pulverized with an analyzer,
A rush treatment agent was obtained. Comparative Example 2 (1) 60 parts by weight of water, 10 parts by weight of sodium tripolyphosphate,
Same as (1) of Example 3 using 10 parts by weight of polyoxyethylene sorbitan monooleate ("Reodol TW-O120" described above) and 20 parts by weight of a blue dye (CI basic blue 3) Thus, a surfactant aqueous solution containing a blue dye was obtained.

(2) Then, 50 parts by weight of white carbon (specific surface area 230 m ² / g) and 50 parts of
A powdery surfactant containing a blue dye was obtained in the same manner as in Example 3, (2), using the above parts by weight. (3) 0.1 part by weight of this powdery surfactant was mixed with 100 parts by weight of titanium oxide ("R-310" described above) and 0.0 part of synthetic zeolite ("Toyobuilder GSL-1000" described above).
The mixture was mixed with 5 parts by weight to obtain a rush treatment agent in the same manner as in Example 3, (3). Comparative Example 3 (1) An aqueous surfactant solution was obtained in the same manner as in (1) of Example 3, using 85 parts by weight of water and 15 parts by weight of sodium tripolyphosphate.

(2) Then, 50 parts by weight of white carbon (specific surface area 230 m ² / g) and 50 parts by weight of the aqueous solution of surfactant
A powdered surfactant was obtained in the same manner as in Example 3, (2), using the same parts by weight. (3) 75 parts by weight of this powdery surfactant was mixed with 100 parts by weight of titanium oxide ("R-650" described above), and
A rush treatment agent was obtained in the same manner as in (3). Comparative Example 4 (1) Using 85 parts by weight of water and 15 parts by weight of sodium polyacrylate ("Aquaric DL-100" described above),
A surfactant aqueous solution was obtained in the same manner as in (1) of Example 3.

(2) Then, 50 parts by weight of white carbon (specific surface area: 230 m ² / g) and 50 parts by weight of the aqueous solution of the surfactant
A powdered surfactant was obtained in the same manner as in Example 3, (2), using the same parts by weight. (3) 75 parts by weight of this powdery surfactant was mixed with 100 parts by weight of titanium oxide ("R-650" described above), and
A rush treatment agent was obtained in the same manner as in (3).

Each of the grass treatment agents obtained in Examples 1 to 8 and Comparative Examples 1 to 4 was mixed with natural soil and water in the compositions shown in Tables 1 and 2, and the mixture was sufficiently stirred to be treated. An aqueous dispersion was prepared. In 2.5 kg of this dispersion, 0.3 kg of harvested fresh grass was immersed (mud-dyed) for 1 minute, and taken out.
Dried in the sun for two days. The "adhesiveness" and "uneven color" of the dry grass thus obtained were evaluated. The results are shown in Tables 1 and 2. In Table 2, Controls 1 and 2
Was tested using a rush treatment dispersion consisting of natural dyed soil and water without a rush treatment agent.

The adhesion was evaluated by observing the dry grass with the naked eye under direct sunlight and evaluating according to the following criteria. ◎: Very good adhesion and no discoloration ○: Good adhesion and no discoloration Δ: Slightly poor adhesion and discoloration ×: Poor adhesion and discoloration The dry grass was visually observed and evaluated according to the following criteria.

◎: No unevenness in color between the root and the tip of the rush and the middle part of the rush. ○: Some unevenness in the color between the root and the tip of the rush and the middle part. Δ: The root and the tip of the rush. , The color is lighter than the middle part. ×: The root and the tip of the rush are not colored.

[0029]

[Table 1]

[0030]

[Table 2]

From the table, it can be seen that the amount of zeolite contained in each of the rush treatment agents of Comparative Examples 1 to 4 is out of the upper and lower limits of the range (0.1 to 30 parts by weight) of the present invention, or contains zeolite. In all cases, the adhesion to grass was inferior, and color unevenness occurred. On the other hand, the rush treatment agents of Examples 1 to 8 had excellent adhesion to rush and did not have color unevenness.

[0032]

As described above, the use of the rush treatment agent of the present invention makes it possible to obtain grass with excellent color tone while maintaining the fragrance and texture peculiar to rush. In addition, since the amount of the natural dyed soil can be reduced, the amount of dust is reduced, which contributes to improvement of the working environment and has the effect of saving resources.

Claims (2)

(57) [Claims] 1. A herbicidal composition comprising 0.1 to 30 parts by weight of zeolite and 0 to 5 parts by weight of a surfactant based on 100 parts by weight of titanium oxide. 2. The herbicidal composition according to claim 1, wherein the surfactant is at least one selected from sodium tripolyphosphate, sodium polyacrylate surfactant and sorbitan nonionic surfactant.