JP3519745B2 - Deodorant and deodorant material using the same - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a deodorant having an excellent deodorizing property and a deodorizing material using the same.

[0002]

2. Description of the Related Art Conventionally, various deodorizing agents have been provided as a deodorant for malodors such as ammonia, hydrogen sulfide and trimethylamine. For example, there have been deodorants by physical adsorption of activated carbon, silica gel, activated alumina, zeolite and the like, and deodorants utilizing chemical reactions such as neutralization reaction, condensation reaction, addition reaction, oxidation reaction and reduction reaction. However, these deodorants have a short initial deodorizing rate, have a low deodorizing ability, and have a short life.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a deodorant having an excellent initial deodorizing rate and a high deodorizing ability, and a deodorizing material using the same.

[0004]

The deodorant of the present invention is a chloride.
Chromium ions, iron ions, nickel ions generated from,
It is a solution in which at least one metal ion selected from manganese ion and copper ion and a polymer having a hydroxyl group form a chelate. When the iron ion is trivalent and the polymer having a hydroxyl group is polyvinyl alcohol, it has a particularly excellent deodorizing ability. Further, the deodorizing material of the present invention has the deodorizing agent attached to the substrate.

[0005]

In the deodorant of the present invention, at least one metal ion selected from chromium ion, iron ion, nickel ion, manganese ion and copper ion generated from chloride and a polymer having a hydroxyl group form a chelate. It was a solution <br/>, since the metal ions are uniformly dispersed to form a polymer chelate, the polymer and the sum over deodorizing capability of the deodorizing ability of the metal ions having a hydroxyl group, excellent It has an initial deodorization rate. In addition, since the polymer having a hydroxyl group can act as an adhesive in this deodorant, even if the deodorant is attached to the substrate, it is possible to obtain a deodorant material without affecting the deodorizing ability or the initial deodorizing rate. It can be adapted to various applications.

The metal ion which can be used in the present invention is at least one selected from chromium ion, iron ion, nickel ion, manganese ion and copper ion, and the valence of each metal ion is not particularly limited. Since trivalent iron ions are excellent in deodorizing ability and initial deodorizing rate, they can be used particularly preferably.

The metal salt that produces these metal ions is not limited , and produces the above metal ions.
Any chloride can be used.

The polymer having a hydroxyl group used in the present invention is not particularly limited, and examples thereof include polyvinyl alcohol, a copolymer of polyvinyl alcohol, and polyallyl alcohol. Among these, polyvinyl alcohol is the above metal ion. Since a chelate is easily formed and the metal ion can be dispersed uniformly, it is possible to bring out the ability beyond the deodorizing ability of the metal ion. This effect is remarkable when polyvinyl alcohol and trivalent iron ions form a chelate.

The deodorant of the present invention can be obtained by dissolving the above metal salt and a polymer having a hydroxyl group in a solvent and simultaneously forming a chelate. The mixing ratio of this metal salt is 10 to 100 with respect to the hydroxyl group of the polymer.
It is preferably mol%. If the blending ratio exceeds 80 mol%, the metal ions cannot be uniformly dispersed, the metal ions come into contact with each other, and the deodorizing ability of the metal ions cannot be sufficiently brought out. On the other hand, less than 10 mol% The amount of metal ions is too small, and the deodorizing ability is poor. More preferably, it is 20 to 80 mol%.

Since a polymer having a hydroxyl group is used in the present invention, water can be used as a solvent, and there is an advantage that there is little danger of toxicity and explosiveness in the drying step during the manufacturing process, and it is easy to handle. ing.

The deodorizing material of the present invention can be obtained by attaching the above deodorant to a substrate. Examples of the base material include a film, a foam, a woven fabric, a knitted fabric, a non-woven fabric, and the like, but since a textile sheet such as a woven fabric, a knitted fabric, a non-woven fabric has a large surface area, it is possible to bring out a higher deodorizing ability of a deodorant, and Since it is flexible, it can be used in various applications and places, and is a suitable base material.

The method of attaching the deodorant to such a substrate may be impregnation, coating, spraying or the like, and is not particularly limited. The deodorant may be attached in any state, but when it is attached to a fiber sheet such as a woven fabric, a knitted fabric, or a non-woven fabric, mainly when it is attached to the intersections of fibers or the fiber surface, the surface area is wide and the deodorizing ability is improved. It is an excellent deodorant material.

Examples of the deodorant and deodorant material of the present invention will be illustrated below, but the invention is not limited to the following examples.

[0014]

【Example】

(Example 1) After mixing 60 mol% of iron (III) chloride with respect to the hydroxyl groups of polyvinyl alcohol with an aqueous solution of 10% by weight of polyvinyl alcohol having a saponification degree of 97.0 to 98.5%, the mixture was stirred for 30 minutes. Then, a sol-like deodorant was obtained.

On the other hand, 70% by weight of polyamide fiber (fineness: 45 denier, fiber length: 76 mm) and 30% by weight of rayon fiber (fineness: 15 denier, fiber length: 76 mm) were mixed with a card machine to obtain a fiber web. Then, a needle punching treatment and an acrylic ester binder impregnation treatment were performed to obtain a nonwoven fabric having a binder ratio of 35% by weight, a basis weight of 350 g / m ² , and a thickness of 9 mm.

This non-woven fabric was cut into 5 × 5 (cm) pieces, impregnated with the above-mentioned sol-like deodorant so as to have a solid content of 0.15 g, and then dried at 90 ° C. for 1 hour to obtain the present invention. A deodorizing material was obtained.

Comparative Example 1 0.15 g of iron (III) chloride crushed to an average particle size of 10 μm was used as a deodorizing material.

Comparative Example 2 The same non-woven fabric as in Example 1 was impregnated with polyvinyl alcohol alone in the same manner as in Example 1 without using iron (III) chloride, and the dried material was used as a deodorizing material.

Comparative Example 3 0.15 g of Kuraray Coal 4T-B (Kuraray Chemical Co., impregnated carbon) crushed to an average particle size of 10 μm was used as a deodorizing material.

(Comparative Example 4) 0.15 g of lionite PF (Chemical adsorption deodorizer manufactured by Lion Corp.) pulverized to an average particle size of 10 μm was used as a deodorizing material.

Comparative Example 5 0.15 g of Tettontide (manufactured by Matsushita Electric Works, Ltd., iron porous body + ascorbic acid) pulverized to an average particle size of 10 μm was used as a deodorizing material.

Example 2 A deodorizing material was obtained in the same manner as in Example 1 except that 20 mol% of iron (III) chloride was mixed with the hydroxyl group of polyvinyl alcohol.

(Examples 3 to 7) Chromium (III) chloride, manganese (II) chloride, nickel (II) chloride, copper chloride (I)
I) and iron (II) chloride were mixed in an amount of 20 mol% with respect to the hydroxyl groups of polyvinyl alcohol (Example 3,
A deodorant material was obtained in exactly the same manner as in Example 1 except for 4, 5, 6, 7).

(Initial Deodorization Rate for Ammonia) Each of the deodorizing materials of Examples 1 to 7 and Comparative Examples 1 to 5 was placed in a 2 liter Erlenmeyer flask, and 25% ammonia water was added to it.
0 μl was added to adjust the initial concentration to 800 ppm, which was then sealed with parafilm. Then, the ammonia concentration (ppm) after 30 minutes, 1 hour, and 2 hours was measured by a gas detector tube (manufactured by Gastec Co., Ltd.). On the other hand, the concentration is measured by using the Erlenmeyer flask in which the same amount of ammonia is added as a blank,
The deodorization rate for the blank was calculated from the following formula. The results are shown in FIGS.

[0025]

(Deodorizing ability when saturated with ammonia)
Each of the deodorizing materials of Example 1 and Comparative Examples 1 to 5 was placed in a 2 liter Erlenmeyer flask, and 20 cc of 100% ammonia gas was introduced to make the initial concentration 7,000 ppm, and the parade was sealed. After 1 hour, the ammonia concentration (ppm) is measured with a detector tube (produced by Gastec Co., Ltd.). On the other hand, the concentration is measured using an Erlenmeyer flask in which only the same amount of ammonia is added as a blank, and the deodorizing rate for the blank is determined in the same manner as above. And when this deodorization rate is 10% or more, the flask is replaced and the deodorization rate is 10%.
Repeat the same operation until less than 10% deodorization rate
From the amount of deodorization until the amount became less than 1, the number of moles deodorized per 1 g of the deodorizing material was taken as the deodorizing ability at saturation. This result is shown in Table 1.
Shown in.

[0027]

[Table 1]

(Initial Deodorization Rate for Trimethylamine and Hydrogen Sulfide) Except that the initial concentration of trimethylamine was 30 ppm and the initial concentration of hydrogen sulfide was 45 ppm, the initial deodorization rate for ammonia was measured in exactly the same manner.
The initial deodorization rate for each malodor of the deodorizing material of Example 1 was determined. The result is shown in FIG.

[0029]

In the deodorant of the present invention, the metal ion forms a chelate with the polymer and is uniformly dispersed. Therefore, the deodorizing ability higher than the sum of the deodorizing ability of the polymer having a hydroxyl group and the metal ion, It has an excellent initial deodorization rate.

Since the polymer having a hydroxyl group can act as an adhesive in the deodorant of the present invention, even if the deodorant is adhered to the substrate, the deodorant material does not affect the deodorizing ability and the initial deodorizing rate. Can be obtained and can be adapted to various applications.

[Brief description of drawings]

FIG. 1 is a graph showing changes with time of ammonia deodorization rates of deodorizing materials of Example 1 and Comparative Examples 1 to 5.

FIG. 2 is a graph showing changes with time of the ammonia deodorizing rate of the deodorizing materials of Examples 2 to 7.

FIG. 3 is a graph showing changes with time of deodorization ratios of trimethylamine and hydrogen sulfide of the deodorizing material of Example 1.

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Hiroaki Yamazaki 7 Kitatone, Sowa-machi, Sarushima-gun, Ibaraki Prefecture Japan Vilene Co., Ltd. Tokyo Research Laboratory (56) Reference JP 63-79660 (JP, A) JP Sho 60-68860 (JP, A) JP-A 62-237924 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A61L 9/00-9/22

Claims (3)

(57) [Claims] 1. A solution in which at least one metal ion selected from chromium ions, iron ions, nickel ions, manganese ions, and copper ions generated from chloride and a polymer having a hydroxyl group form a chelate. deodorant, characterized in that. 2. The metal ion is a trivalent iron ion.
And the polymer having a hydroxyl group is polyvinyl alcohol
The deodorant according to claim 1, wherein 3. A deodorizing material having a deodorant according to claim 1 or 2 attached to a base material.