JPS63168169A - Deodorant - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a deodorant that can easily and effectively remove bad odors.

“Prior Art and Problems” Substances that are currently considered to cause bad odors include ammonia, hydrogen sulfide, methyl mercaptan, methyl sulfide, methyl disulfide, acetaldehyde, trimethylamine, and styrene, and most of them are in the ppb range. It emits an odor at low concentrations.However, in order to remove these various odors, deodorants have been proposed for each type of odor, but activated carbon is the most commonly used deodorant. It has been.

However, although activated carbon is highly effective in removing organic solvents at concentrations of several hundred ppm, it is less effective at removing bad odors at concentrations as low as ppb, and it also has problems such as being susceptible to temperature and humidity effects. be.

Furthermore, as a commercial product, for example, ANTCO (trade name, activated carbon supported on iron sulfate and ascorbic acid)
However, although this method is effective against amine-based odors, it is insufficient against pond odors and has a strong tendency to be unsuitable.

[Means for Solving the Problems] The present inventor has conducted extensive research to obtain a deodorant that can efficiently remove ordinary odors, and has recognized that an aqueous solution of sulfuric acid and sodium hydroxide has a deodorizing effect. However, since it is a liquid, it is difficult to handle, and we have discovered that by supporting activated alumina, it can be shaped into a shape suitable for the purpose of use, making it easier to handle. This is what was done. That is, the present invention is a deodorizer in which activated alumina supports at least one compound selected from sulfuric acid and sodium hydroxide in an amount of 1 to 20% by weight based on the activated alumina.

Commercially available activated alumina, sulfuric acid, and sodium hydroxide can be used in the present invention.

The deodorizer of the present invention is prepared by adding activated alumina to an aqueous solution of sulfuric acid and sodium hydroxide, or adding an aqueous solution to activated alumina, stirring thoroughly, and then vacuuming the mixture. The paste is then degassed until the adsorption effect occurs, and then the excess solution is separated and transferred to another container, and the resulting paste is prepared by drying.

In the preparation of this deodorant, the amount of chemicals such as sulfuric acid and sodium hydroxide used is in the range of 1 to 20% by weight, preferably 5 to 13% based on the weight of activated alumina. This is because if the amount is less than 1%, the deodorizing effect will be low, and if it is added in an amount of 20% or more, no significant difference in the effect will be observed.

The drying temperature of the paste after separating the excess solution is usually 1
Preferably, the temperature is 00 to 200°C.

Therefore, the shape of the deodorant of the present invention is tablet-like, flat-like,
It can be used in the form of powder or granules depending on the purpose of use.
It can be formed by a method in which activated alumina formed into a desired shape supports an aqueous drug solution as described above, or by a method in which a paste of activated alumina and an aqueous drug solution is formed into a desired shape.

The deodorizer prepared in this way can be placed in the required amount in a shape according to the purpose of use and placed at the location where the bad odor occurs. When used to deodorize a van truck that has
The deodorizer of the present invention can be formed into a sheet or thin plate and attached to the inside of the roof of a van truck. If moisture is a problem, the deodorizer can be formed into a plastic sheet with micropores. Just try to protect it.

In addition, instead of being attached to the inside of the van truck roof, it is possible to use the inside corner of the roof to form a shape with, for example, an elongated triangular cross section, or to have a large number of pores formed in this shape. A container containing a tablet-shaped deodorant can also be used by attaching it to a corner, and the tablet-shaped deodorant can be easily replaced.

[Effects of the Invention] Since the present invention is made by supporting activated alumina with a specific amount of at least one of sulfuric acid, sodium hydroxide, etc., it has a deodorizing effect on normal bad odors, and is particularly effective against fish, fish, etc. It is effective in deodorizing meat, inorganic and organic sulfur compounds, and by increasing the amount of supported chemicals, it can improve the deodorizing effect of difficult-to-deodorize bad odors.It can be formed into various shapes, so it can be used for various purposes. It has been recognized that it has extremely excellent effects, such as being able to be used in a shape that suits the user's needs, being easy to install at the place of use, and being easy to replace.

[Example] Next, examples of the present invention will be described.

Example 1 Sodium hydroxide 1. 6. Dissolve Og in 16cc of water.
Prepare a 3% Na011 aqueous solution, add 20 g of activated alumina (manufactured by Nippon Light Metal ■, powder with a diameter of 100 μm) to the aqueous solution, stir thoroughly, and then vacuum at 65 mmH.
Deaeration treatment was carried out in g for 15 minutes, and the paste obtained by filtering and separating the aqueous solution was dried at 150°C for 90 minutes to obtain a deodorizer (deodorant A) carrying 5% Na011.
I got g.

0.1 g of the obtained deodorant A was placed in a 19 ml vial and sealed, and methyl mercaptan (CHSH), allyl mercaptan, and hydrogen sulfide were added to the container at a concentration of 50 ppm each. Changes in the residual rate of hydrogen sulfide over time were determined using a gas chromatograph (@Hitachi Model 163), and good deodorizing effects were obtained in all cases.

These results are not shown in Figure 1 (methyl mercaptan), Figure 2 (allyl mercaptan), and Figure 3 (hydrogen sulfide).

In addition, the tablet-shaped deodorant A1. prepared in this way. o
kg was packed into a long and narrow container with a triangular cross section and attached to the inside front and rear corners of the roof of a van truck with a capacity of 1 m for transporting fish, but even after one month after being drunk, there was still a bad odor in the room. I never felt muffled.

Example 2 A deodorizer (deodorant B) in which 5% of ISO was supported on activated alumina (deodorant B) and a deodorizer (in which 10% was supported) in the same manner as in Example 1 using sulfuric acid (6% H80) were prepared. Deodorant C) was prepared, 0.1 g of it was placed in a 19 ml vial, sealed, and added to the vial to give a total volume of 8,000 ml, and the residual rate of N11 was determined over time in each case. The results show that deodorant C has a better deodorizing effect than deodorant B, and that the deodorizing effect for the same odor can be improved by increasing the amount of the drug supported. The results are shown in Figure 4.

Example 3 Deodorant A (5% Na
011), put 0.1 g of it into a T22 ml vial, seal it, and add 4000 g of trimethylamine.
The residual rate of trimethylamine was determined over time by adding it in ppm. This result showed that a good deodorizing effect was obtained. The results are shown in Figure 5.

Comparative Example Commercially available ANTCO (trade name, iron sulfate + ascorbic acid +
Regarding activated carbon) and activated alumina used in the examples,
The residual rate was determined over time in the same manner as in Examples 1 to 5 for the same odors. The results showed that ANICO was found to be effective against trimethylamine, but it was found that the effectiveness differed depending on the type of odor. or,
It was also found that activated alumina alone had similar effects depending on the type of odor.

[Brief explanation of the drawing]

FIG. 1 to FIG. 5 are diagrams showing examples of the deodorizing effect of the deodorant of the present invention. Patent applicant: Nippon Light Metal Co., Ltd. Agent: 1) Yoshihisa 11 and 1 o'clock! gK
(3) Figure 2 Time (minutes)

Claims (1)

[Claims] 1) Add at least one compound selected from sulfuric acid and sodium hydroxide to activated alumina in a ratio of 1 to 1 per activated alumina.
A deodorant characterized by carrying up to 20% by weight.