JPS6176162A - 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] [Technical Field] The present invention relates to a deodorant that eliminates bad odors and strange odors. [Background Art] Generally, bad odors and strange odors are caused by smoke and waste liquid from factories, cigarettes, sitting rooms, and kitchens. The source is kitchen waste, etc., and the types of foul odors and off-odors are diverse. especially,
In homes, rooms are often kept closed when heating and cooling equipment is in operation, so countermeasures against these foul odors have become a major problem.

There are four ways to eliminate these bad odors and strange odors:
There are two ways.

■ Sensory deodorization method: A method of masking bad odors and foreign odors using aromatic substances (fragrances).

■Physical deodorization method: removes bad odors through ventilation and diffusion, or uses activated carbon to absorb odors.

■ Chemical deodorization method: A method of chemically reacting (neutralization, addition, condensation, oxidation, etc.) with malodor and off-flavor components to make them odorless.

■ Biological deodorization method: A method that reduces and kills bacteria that cause spoilage, prevents spoilage, and prevents the occurrence of bad odors.

The sensory deodorizing method (2) is a method that is mainly practiced in households, and is a method that uses the fragrance of the deodorant itself to deodorize bad odors and foreign odors. However, with this method, it is difficult to balance the fragrance and odor, and people have different tastes in the scent of deodorants, which can sometimes make them feel disgusted. It's hard to say. Although the physical method (2) is widely used, there are problems in that it requires equipment, that the room temperature fluctuates, and that activated carbon does not have a long-lasting adsorption effect on bad odors and off-flavor components. In addition, with the chemical deodorizing method (■), it is extremely difficult to select substances that effectively react with a wide variety of malodorous components, and some deodorant solutions have a pH of 3 or less, making them difficult to handle. This is not common as it requires caution. Furthermore,■
At present, each biological deodorization method has its own advantages and disadvantages, such as the need for equipment and slow onset of effects.

[Purpose of the invention]

This invention was made in view of the above circumstances, and is highly safe because the pH of the solution is maintained in the neutral range. The purpose is to provide a deodorant with high odor effect.

[Disclosure of the invention]

The first gist of the present invention is a deodorant in which at least a part of the medium in which the active ingredient is dissolved has a buffering effect to keep the hydrogen ion concentration within a predetermined range, and the active ingredient has the following general formula %. A deodorant containing a small amount of a compound (formula %) in which at least a part of the medium in which it is dissolved has a buffering effect to keep the hydrogen ion concentration within a predetermined range is used as the second deodorant. The summary is as follows.

That is, the deodorizing agent according to the present invention has a small amount of solvent (some of which has a buffering effect, so the pH of the solution is always kept almost constant. Therefore, the deodorizing effect is improved,
Moreover, when the pH is kept neutral, the safety of the deodorant solution can be maintained. The deodorizing agent of the present invention, which uses the compound represented by the above general formula as an active ingredient, has an even higher deodorizing effect.

The buffering solution is a mixed solution of an acid and its salt, such as Britton-Robinson buffer prepared by mixing phosphoric acid, boric acid, or acetic acid with sodium hydroxide, or citric acid and phosphoric acid. An example of this is Matskirhane's buffer solution made with disodium hydrogen, and by using these, the pH of the solution can be maintained at around 6.5 to 7.5. The buffer reduces pH changes caused by external factors, ensuring safety.

Furthermore, when a deodorizing agent containing the above buffer is reacted with a strong alkaline odor such as ammonia or trimethylamine, the hydrogen ions generated by the dissociation equilibrium of the buffer cause a neutralization reaction with the odor, causing the odor to disappear. Expresses odor effect.

Will it come from the above general formula? IA odor active ingredients include:
Examples include pyrocatechol, pyrogallol, and gallic acid. These substances may be used alone (or may be used in combination). Conventionally, the deodorizing effect of these substances has been greatly influenced by the hydrogen ion concentration of the /8 solution, and pyrocatechol, pyrocatechol,
Phenolic substances such as pyrogallol had little effect in acidic solutions in the presence of gallic acid. However, by dissolving these deodorizing active ingredients in a solvent containing the aforementioned buffer and maintaining the hydrogen ion concentration near neutrality, the deodorizing effect of pyrocatechol, pyrogallol, etc. can be significantly improved. Furthermore, the deodorant container has a deodorizing effect on sulfur-based substances such as mercaptans and hydrogen sulfide in addition to ammonia and amines.

The present invention will be explained below based on examples thereof.

(Example 1) 0°1 mo of commercially available pyrocatechol and 1 g of gallic acid each
100 cc of phosphoric acid aqueous solution. At this time, p
H is about 3.4. A 1N sulfur-IJium hydroxide aqueous solution is added to this i i>& until p[( reaches 6.5. The solution thus obtained is used as a deodorizer.

On the other hand, in order to see the deodorizing effect of the buffer solution itself, 0.1 mol
1N sodium hydroxide aqueous solution is added to 100 cc of phosphoric acid aqueous solution until the pH reaches 6.5, and the deodorizing effect of this solution is activated.

In order to examine the deodorizing effect, the following evaluations were conducted. That is, target odors are ammonia, trimethylamine, nicotine, ethyl mercaptan, and hydrogen sulfide, and the odor concentrations near the dark value of these odors are set in five levels. Add 1 m7 of an aqueous odor solution of each odor concentration to a test tube! Get in,
Add 1 m (l) of the above deodorant to it. After shaking, 10 panelists with the same sense of smell were asked to evaluate the stage at which they no longer felt the odor. 1 ml of water was added to the odor aqueous solution, and the stage at which the odor was no longer felt was evaluated.The difference in the concentration level measured when the deodorant was added and when water was added was The evaluation value was taken as the odor effect. That is, the greater the deodorizing effect, the larger the evaluation value, and if there is no deodorizing effect, the evaluation value is O.

The deodorizing effect of the /8 solution containing only the buffer solution was evaluated in the same manner.

The results are shown in Table 1. Note that the numerical values in the table are the average values of 10 panelists.

(Margin below) From the table above, it was found that the deodorant had a deodorizing effect on all five target odors, and the buffer had a deodorizing effect on ammonia and trimenalamine.

(Example 2) Two bottles of the deodorizing agent obtained in the above example were placed in a 10 m1 glass container with a stopper and 1 ml was put into the container.

One bottle contains 0.1 wt% aqueous solution of ethyl mercaptan 10
0μβ, and the other one has 0.1ht% of trimethylamine.
Add 100 μl of the aqueous solution to each tube and seal. Also,
As a blank test, the above two odor aqueous solutions were added in the same way to 1 ml of water instead of the deodorant.
Seal tightly. After shaking for 30 minutes, headspace gas was collected from the gas phase portion of the glass container, and the odor concentration of each was measured by gas chromatography.

The deodorizing effect was determined based on the residual rate determined as follows.

As a result, the residual rate for ethyl mercaptan was 6%.
, -trimethylamine, it is 2%, showing almost complete deodorizing effect.

〔Effect of the invention〕

As seen above, in this invention, the deodorant solution is maintained in a constant pi range such as a neutral range, or the compound represented by the above general formula is used as the deodorizing active ingredient. As a result, a deodorizing agent with high deodorizing seedlings, odorless itself, and no danger to the human body can be obtained. It does not cause disgust in people due to its own odor, and does not require large-scale equipment.Moreover, it can deal with a wide range of odors such as ammonia, amines, and ethyl mercaptan, so it can be used to remove odors from factories to household odors. It can effectively deal with bad odors and even bad smells in toilets.

Agent Patent attorney Takeshi Matsumoto Hikozuki Nina Rokune Hoshosho (self-motivated) January 15, 1985 Deodorant 3, Relationship with the person making the amendment Case Patent applicant Location 104 Oaza Kadoma, Kadoma City, Osaka Prefecture B'
hk Name (583) Representative of Matsushita Electric Works Co., Ltd. (Ikuo Kobayashi 4, No representative 6, Specification subject to amendment 7, Contents of amendment (1) From the bottom of page 9 of the specification ro in 6th line, 1wt%”
Correct it to "r1oopρm".

Claims (4)

[Claims] (1) At least a part of the medium for dissolving the active ingredient is
A deodorant made of a substance that has a buffering effect that keeps the hydrogen ion concentration within a specified range. (2) The deodorant according to claim 1, wherein the hydrogen ion concentration is such that the solution is kept approximately neutral. (3) The active ingredient has the following general formula ▲ Numerical formula, chemical formula, table, etc. ▼ [In the formula, R_1: -H, -OH, R_2: -H, -COOH, -OH, is shown. ] A deodorizer comprising at least one of the compounds represented by the formula, in which at least a portion of the medium in which it is dissolved has a buffering effect to maintain the hydrogen ion concentration within a predetermined range. (4) The deodorant according to claim 3, wherein the hydrogen ion concentration is such that the solution is kept approximately neutral.