JP2632704B2 - Processed soil for rush - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a novel dyed soil of rush mainly used for tatami mats.

Conventional technology and problems The rush used for the tatami mat is the rush dyed immediately after harvest,
Soaked natural dyes such as Awaji dyed soil and Fukuoka dyed soil in suspended sewage, apply the dyed soil uniformly, and then dry to give properties such as surface gloss, fading resistance and moisture control Is done.

These natural soils are usually 500-600k per 10a acreage
g is used. However, since these natural dyes exist in the natural world, their production areas are limited, and there is a concern about depletion of resources.

Also, natural dyed soil contains fine sandy soil, and a large amount of dust is generated when handling it or handling rush to which it is to be attached.

In addition, since natural dyed soil is a natural product, there is variation in quality even in the same production area, and this variation affects the quality of dyed rush.

Due to the above-mentioned disadvantages of natural dyed soil, it has been proposed to add an additive composed of a pigment, a surfactant and the like for the purpose of reducing the amount of use as much as possible and at the same time improving the quality.

However, although the amount of use is reduced, it still has to rely on natural dyed soil, so that it is not a complete solution at present.

In order to solve such problems, so-called synthetic soils that do not require natural soils have been proposed, but they are still inferior in terms of adhesion to rush, and the characteristics of dyed rush such as color and gloss. There's a problem.

Problems to be Solved by the Invention As described above, there are many problems in using the conventional natural dyed soil. In particular, the generation of dust has a problem that requires measures since it affects human health. In addition, since dealing with the depletion of resources is also a serious concern, it has been desired to use a processed dye that does not use natural dye and is comparable to the finish.

Means for Solving the Problems The present inventors have conducted intensive studies to solve the problems of the prior art, and as a result of combining acid clay, titanium oxide and a surfactant, it can be dyed for rush. This led to the present invention. In other words, by using fine titanium oxide, the adhesion to the rush surface is more effectively performed, and by using the acid clay, the affinity for the rush surface is further improved, and the unevenness of the dye is eliminated and the glossiness is reduced. It is an improvement. Acid clay has many active points, and is therefore used for decolorization, deodorization, catalysis, or the like. That is, the acid clay exhibits adsorption or strong affinity for organic substances, particularly those having coordination sites or active groups. Taking advantage of this feature, by sharing it with titanium oxide, it increases the adhesion of fine titanium oxide to the physical rush surface, as well as the affinity of acid clay for the chemical rush surface,
It achieves a predetermined purpose with more uniform dyeing properties and a small amount of use. Further, by using a surfactant, the dispersibility of titanium oxide and acid clay is improved, and at the same time, the wettability on the surface of rush is enhanced, so that a more efficient dyed soil of the present invention can be obtained.

The present invention is a processed dye for rush, which comprises titanium oxide, acid clay and a surfactant as essential components, and particularly, an acid clay 600 to 100 parts by weight of titanium oxide.
It is a processed soil consisting of 11500 parts by weight and 0.1-5 parts by weight of a surfactant.

The processed soil for rush of the present invention is 80 to 1 per 10 a of rush planting area.
The biggest advantage is that it does not use any natural soils from various production areas, and the amount of use can be significantly reduced compared to conventional ones. The processed dyed soil has a property that it has a large specific gravity and is hard to be scattered, and since it can be used alone for rush mud dyeing, the amount of dust is significantly smaller than that of natural dyed soil. It is also very effective in depleting resources.

The titanium oxide used in the present invention is obtained by a known method, for example, a sulfuric acid method, and usually has an average particle size of 0.2 to 0.4 μm.

The acid clay used in the present invention is a white clay containing montmorillonite as a main component, activated in an acidic environment, naturally produced in large quantities, and has adsorption characteristics. In the present invention, it is good to use fine powder which usually accounts for 80% or more, preferably 90% or more, of 325 mesh or less.

Surfactants used in the present invention are anionic surfactants,
Cationic surfactants and nonionic surfactants can be used. For example, polyoxyethylene-nonyl phenyl ether can be used as the nonionic surfactant.

In addition to the above essential components yellow iron oxide, a colored pigment such as copper phthalocyanine, relative to titanium oxide 100 parts by weight, 0.1 to 20 parts by weight.
It is also possible to mix within the range of parts by weight. In this case, due to the effect of these colored pigments adsorbing on acid clay, when the finished dyed soil is suspended in water, the coloring effect is reduced by the adsorption effect of acid clay, and rush can be dyed uniformly. It can give excellent color to rush.

The processed dye of the present invention is sufficiently mixed at a ratio of 600 to 1500 parts by weight of acid clay with respect to 100 parts by weight of titanium oxide. As a machine for mixing these, a general mixer, a kneader or the like can be used, but it is preferable to use a Henschel mixer. 0.1 to 5 parts by weight of a surfactant is additionally added to the sufficiently mixed powder, and further mixed sufficiently. In the sense of adjusting the color tone, yellow iron oxide,
Colored pigments such as copper phthalocyanine may be used alone, or two or more of them may be added and mixed and dispersed.

Example 1 9 kg of titanium oxide and 90 kg of acidic clay (90% or less of 325 mesh or less) were mixed for 10 minutes using a Henschel mixer, and 0.2 kg of a surfactant polyoxyethylene alkyl ether (100% conversion) was additionally added. And mixed for 10 minutes.

Example 2 Titanium oxide, acid clay and a surfactant were sufficiently mixed in the same manner as in Example 1 except that the amount of acid clay was changed to 100 kg, and then 0.8 kg of copper phthalocyanine was further added and mixed and dispersed for 10 minutes.

Example 3 9 kg of titanium oxide, 90 kg of acid clay and 0.3 kg of surfactant
Was thoroughly mixed in the same manner as in Example 1, and then yellow iron oxide was added.
An additional 2 kg was added and mixed and dispersed for 10 minutes.

 Table 1 shows the compositions of Examples 1 to 3.

Example 1 of the present invention manufactured as described above and
After 100 kg / 10a of processed dyeing soil for a few rushes was poured into water 1500, it was sufficiently stirred to obtain a dispersion. Immediately after the harvest, the raw rush was harvested from the dispersion by mud dyeing, drained overnight in an upright state, and then dried using a rush blast dryer.

The quality (color, adhesion, and flexibility) of the obtained dried rush is tested as it is as it is and as it is woven on a tatami surface. Furthermore, the tatami mat was tested for light resistance.

Table 2 below shows the compositions of the dispersion containing the processed dye of the present invention used in the test and the dispersion used for comparison. Table 3 shows the test results.

In addition, the processed rush soil of the present invention obtained in Examples 2 and 3 had the same effect as that of Example 1.

Effect of the invention As is clear from the above test results, rush treated with the processed dyed soil of the present invention is superior in quality in comparison with rush treated with the conventional natural dyed soil. A tatami table is obtained.

Further, the use of the processed dyeing soil of the present invention can significantly reduce the amount of free dust generated as compared with the conventional natural dyeing and the case where a soil dyeing aid is added to the natural dyeing soil. It can not only improve but also save resources or meet the issue of depletion of natural dyed soil, and can sufficiently withstand use as a substitute for rush mud dyeing.

Claims (2)

(57) [Claims] 1. A processed dyed soil for rush, comprising titanium oxide, acid clay and a surfactant. 2. An acid clay of 600 parts by weight per 100 parts by weight of titanium oxide.
2. The processed soil for rush as claimed in claim 1, wherein the soil is contained at a ratio of about 1500 parts by weight and 0.1 to 5 parts by weight of a surfactant.