JPH10277374A - Method for making hydrophobic evaporable substance water-soluble and water-soaking material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make a hydrophobic evaporable substance water-soluble without being emulsified by wrapping the hydrophobic evaporable substance with a waterproof wrapping material which allows the permeation of the evaporable gas of the hydrophobic evaporable substance and soaking this wrapped material in water. SOLUTION: A hydrophobic evaporable substance which has an amtimicrobial activity such as allyisothiocyanae and hinokitiol and also which is of a perfume such as pinene, limoneme, linalool and menthol, is wrapped with a viscose coated paper. When the wrapped material is of such a structure that the coated paper is further wrapped externally with a gas permeable waterproof film such as porous polytyleneterephthalate film, porous K-nylon, thick polyethylene film, unstretched polypropylene film and stretched polypropylene, it is possible to control the bleeded amount of an evaporable gas of the hydrophobic evaporable substance by appropriately changing the concentration of cellulose and the amount of coating of viscose of the viscose coated paper, Further, it is possible to make the hydrophobic evaporable substance water-soluble without being emulsified and easily adjust the concentration of an aqueous solution by soaking the wrapped material in water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a method for dissolving a hydrophobic volatile substance such as allyl irithiocyanate (AIT) or hinokitiol in water without emulsification, and a method for dissolving a hydrophobic volatile substance in water. It relates to a material immersed in water.

[0002]

2. Description of the Related Art For example, AIT having antibacterial activity,
Hinokitiol and the like cannot effectively function in water because they are hydrophobic volatile substances.

That is, even if an attempt is made to obtain an aqueous solution by dropping a hydrophobic volatile substance into water, the hydrophobic volatile substance, which is usually in the form of an oil, undergoes phase separation to form oil droplets, so that it is volatile and the effective concentration for a long period of time is reduced. I can't keep it.

On the other hand, it is possible to emulsify and disperse a hydrophobic volatile substance by the surface active action of various fatty acid esters and the like, but it is not suitable as a raw material water for foods such as tofu and jelly, for example, because it becomes cloudy. Applications are limited. In addition, the preparation of the emulsion is troublesome, and the emulsion has a hydrophobic volatile substance as oil droplets in water, so the contact area with water is limited, and all of the hydrophobic volatile substance in the water is effective. Cannot function.

Accordingly, the present invention is to provide a method of dissolving a hydrophobic volatile substance in water without emulsification, and an underwater material capable of dissolving the hydrophobic volatile substance in water.

[0006]

The present invention provides a method for dissolving a hydrophobic volatile substance in water, the method comprising:
This method employs a method of wrapping with a packaging material having waterproofness and through which volatile gas of a hydrophobic volatile substance can pass, and immersing the package in water.

According to this method, since the hydrophobic volatile substance is released in a gaseous state from the package of the hydrophobic volatile substance, the hydrophobic volatile substance dissolves in water without exception and does not become cloudy.

[0008] Therefore, it is possible to effectively function all of the hydrophobic volatile substances in water. In addition, it is possible to control the amount of volatilized gas released according to the volume of water, the interval of use, the required concentration of the hydrophobic volatile substance, and the solubility in water.

For example, in the case of a package in which a hydrophobic volatile substance is wrapped with viscose-treated paper and the outside thereof is further wrapped with a gas-permeable waterproof film, the cellulose concentration of the viscose-treated paper and the amount of viscose applied are appropriately adjusted. By changing, it becomes possible to control the amount of volatile gas emitted from the volatile volatile substance.

Other packaging materials include perforated polyethylene terephthalate film, perforated K-nylon, thick polyethylene film, unstretched polypropylene film, stretched polypropylene and the like.

Next, hydrophobic volatile substances that can be effectively used in the form of an aqueous solution are not limited to liquid and solid properties, but include various substances. For example, allyl isothiocyanate (A
Those having antibacterial activity such as IT) and hinokitiol can be used as an aqueous solution for maintaining the freshness of fruits and vegetables, preserving water, immersing seeds, and preparing antibacterial ice. Also, Pinene,
Limonene, linalool, menthol, citral, menthol, anisole, eugenol, benzoic acid, cinnamic acid,
Fragrances such as ethyl acetate and cineol can be used as aqueous solutions for bath water, toilet wash water, raw water for tofu and jelly, and the like. Insect repellents such as pyrethroids and naphthalene, pheromones, pesticides and the like can be used as aqueous solutions in the agricultural field.

What is solid at room temperature, such as menthol and benzoic acid, may be wrapped in a packaging material as it is, but those which are liquid at room temperature may be cellulose carriers such as cellulose particles, silica gel, zeolite, mordenite, activated carbon,
It is preferable to carry the carrier on a porous carrier such as sponge or urethane.

[0013]

EXPERIMENTAL EXAMPLE 1 First, 5 g of AIT is impregnated into 5 g of expanded cellulose beads (trade name: Biscopearl, manufactured by Rengo Co., Ltd.) as a porous carrier to obtain 10 g of AIT-impregnated cellulose beads.

On the other hand, as a packaging material, a rayon / pulp mixed nonwoven fabric having a basis weight of 14 g / m ² (mixing ratio 30:70) was used as a base material, and a polyethylene adhesive layer (15 μm)
m) On the other surface, a layer was formed by laminating a sustained release layer of AIT gas. This sustained-release layer was coated with a viscose solution (cellulose concentration: 4.8%, alkali concentration: 3.0%) at 5 g / m ² using a roll coater, regenerated and desulfurized in a sulfuric acid bath, washed with water, and dried by a cylinder dryer. Formed.

Then, the packaging material formed as described above is folded in two with the polyethylene adhesive layer inside,
The three sides are sealed to form a sealed bag. In this sealed bag, 2 g of the above-mentioned AIT-impregnated cellulose beads (within AI)
T / g) and the bag has a surface area of 120 cm ²
And The outside of the bag was further wrapped with polyethylene and sealed on three sides to form an AIT package having a size of 100 × 110 mm. This is designated as Sample A.

Next, the cellulose concentration was 3.8%, 1.9.
AIT packages of Samples B and C were formed in the same manner except that the percentage was changed to%.

These samples A, B, and C had a relative humidity of 25.degree.
AIT release amount at 0% is A: 21.4 m, respectively.
g / day, B: 31.3 mg / day, C: 42.8
mg / day.

Each of the AIT packages of Samples A, B and C was
1 and 2, the weight of the AIT package was settled, and the change in the AIT concentration in the water and the change in the AIT concentration in the water were as shown in FIG. 1 and FIG. An aqueous solution of a predetermined concentration was obtained over a period. In addition, in FIG. 2, the comparative example is an oily AI in 12 l of water.
This is a case in which T1 g is added dropwise (approximately 10 mg) over 10 minutes, in which case phase separation occurs with water,
The AIT concentration in water became 0 in 2 days.

[0019]

EXPERIMENTAL EXAMPLE 2 FIGS. 3 and 4 show the results of the same experiment as in Experimental Example 1 except that AIT was replaced with limonene.

The relative humidity of the samples A, B and C at 25 ° C. was 8
The amount of limonene released at 0% is A: 2.1 m, respectively.
g / day, B: 4.2 mg / day, C: 8.3 mg
/ Day.

[0021]

According to the present invention, as described above, the hydrophobic volatile substance can be dissolved in water without emulsification, and by adjusting the gas emission amount of the hydrophobic volatile substance, the concentration of the aqueous solution can be reduced. Adjustments can be made easily.

[Brief description of the drawings]

FIG. 1 is a graph showing experimental results.

FIG. 2 is a graph showing experimental results.

FIG. 3 is a graph showing experimental results.

FIG. 4 is a graph showing experimental results.

Claims (3)

[Claims] 1. A hydrophobic volatile substance is wrapped in a packaging material having waterproofness and through which a volatile gas of the hydrophobic volatile substance can pass, and the package is immersed in water to release the hydrophobic substance released from the package. A method for dissolving a volatile volatile substance in water, comprising dissolving a volatile gas of the volatile volatile substance in water. 2. The method according to claim 1, wherein the hydrophobic volatile substance is a liquid at room temperature.
2. The method for solubilizing a hydrophobic volatile substance according to claim 1, wherein the volatile volatile substance is supported on a porous carrier. 3. An underwater immersion material comprising a package in which a hydrophobic volatile substance is wrapped with a packaging material having a waterproof property and capable of passing a volatile gas of the hydrophobic volatile substance.