JP2768497B2 - Deodorant - Google Patents

Description

Description: FIELD OF THE INVENTION The present invention relates to a deodorant which has an excellent effect on a wide variety of malodors or unpleasant odors occurring in a wide range of fields from industrial use to general household use. .

[Conventional technology]

Conventionally, it is well known that a deodorizing method includes a masking method, a neutralization method, an adsorption method, an oxidation method, an anesthesia method and the like, and many deodorants based on each method are already commercially available. However, all of these deodorants already on the market can exert their effects only on odors in a limited field.

[Problems to be solved by the invention]

Since the above-mentioned conventional deodorizers are effective only in limited fields, they must be used after fully understanding their properties. As described above, in the prior art, a deodorant that effectively acts on all acidic odors, neutral odors, and even alkaline odors generated in a wide range of fields from industrial use to general households has not yet been developed. There was a problem, and it was an issue to solve this.

[Means for solving the problem]

In order to solve the above-mentioned problems, the present invention employs a means for using a deodorant containing propylene carbonate (2-oxo-4-methyl-1,3-dioxolane) as an active ingredient. State.

First, propylene carbonate (2-oxo-4-methyl-1,3-dioxolane), which is an effective deodorant component of the present invention, is conventionally used in addition to a solvent and a plasticizer of a polymer substance, and a hydraulic fluid such as a brake oil. Further, it is a liquid substance at normal temperature which has been utilized as an intermediate of an organic compound or a polymer compound.

Next, in the deodorant of the present invention, even if the active ingredient is limited to only the above-mentioned propylene carbonate, it naturally acts extremely effectively on any of acidic odor, neutral odor, and alkaline odor generated in a wide range of fields. However, one or more other deodorant components, surfactants, and other additives may be present together. Here, other deodorant components include organic acids such as malic acid, citric acid and fumaric acid or salts thereof, metal salts such as ferrous sulfate, ferric chloride, and aluminum sulfate, and aldehydes such as glyoxal. , Propylene glycol, triethylene glycol,
Glycols such as polypropylene glycol, organic acid esters such as lauryl methacrylate, lauryl ethacrylate, and surfactants such as alkyl polyaminoethyl glycine hydrochloride, lauryl dimethyl betaine,
2-alkyl-N-carboxymethyl-N-hydroxyethylimidazolinium betaine, benzalkonium chloride and the like, and as other additives, flavoring agents, coloring agents, bactericides, defoamers and the like can be exemplified. it can.

When a drug other than propylene carbonate is used in combination, propylene carbonate is dissolved in water and then mixed with another drug, or propylene carbonate is dissolved in an aqueous solution in which another drug is dissolved in advance. Any of the methods may be used.

[Action]

It is presumed that propylene carbonate, which is a main component of the deodorant of the present invention, chemically reacts with various odorous substances to produce various derivatives, thereby exhibiting a deodorizing effect.

〔Example〕

Examples 1 to 5: In addition to propylene carbonate as an active ingredient,
Various components were mixed and dissolved in the proportions shown in the table to prepare a liquid deodorant.

In order to examine the effect of the obtained deodorant, the following deodorization test was performed.

That is, a solution of ammonia, triethylamine (amines, alkaline odor), hydrogen sulfide, methyl mercaptan (sulfides, acidic odor), butyric acid (organic acids, acidic odor), and acetaldehyde (aldehydes, neutral odor) The concentration of various odors is 500 ppm of ammonia, 2800 ppm of triethylamine, 800 ppm of hydrogen sulfide, and methyl mercaptan 3
It was 0 ppm, butyric acid 15 ppm, and acetaldehyde 120 ppm. ) Were individually collected in a reagent bottle containing 50 ml of a deodorizer in advance, and stirred with a magnetic stirrer at room temperature. After 10 minutes and 60 minutes, the odor concentration in the upper space of each reagent bottle was determined by Kitagawa formula. It was measured with a gas detector tube, and the deodorization rate was calculated from the odor concentration difference from the blank (50 ml of water).
Evaluation criteria are A (80-100%), B (60-79%),
C (40-59%), D (20-39%) and E (0-19%)
And the results are summarized in Table 2. Here, the concentration measurement is measuring the concentration in the air in the space of the Erlenmeyer flask, and unreacted odor components are released into the air from the solution put in as a bad odor source during the stirring for 50 minutes, 1 and 2
It is considered that the deodorization rate after 60 minutes was lower than the value after 10 minutes.

Comparative Examples 1-4: Without using propylene carbonate as an active ingredient, a liquid preparation was prepared by performing the same operation as in Examples 1 to 5 except that various components were used in proportions shown in Table 3. , These deodorizing effects Examined. The obtained results are collectively shown in Table 2.

From Table 2, Example 1 shows a considerable deodorizing effect on any of the odors of amines (alkaline odor), sulfides (acid odor), organic acids (acid odor), and aldehydes (neutral odor). It is clear that Further, as required in Examples 2 to 5, the deodorizing power against other malodor sources is hardly reduced by appropriately blending an organic acid, an amphoteric surfactant and the like into the components. In addition, it can be seen that the deodorizing power against a specific malodor source is increased. On the other hand, it can be seen that Comparative Examples 1 to 4 do not exhibit a significant effect on different types of odor sources even though they have an excellent deodorizing effect on specific malodor sources.

〔effect〕

As is apparent from the above description, the propylene carbonate of the present invention (2-oxo-4-methyl-1,3-
Deodorizers containing dioxolane) as an active ingredient show a balanced deodorizing effect on any of alkaline odor, acidic odor and neutral odor. It is possible to respond very effectively to a wide variety of malodors or unpleasant odors that occur in a wide range up to, and it can be said that the significance of the present invention is extremely large.

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. ⁶ , DB name) A61L 9/01 B01J 20/00-20/34 B01D 53/34 A61K 7/32

Claims (1)

(57) [Claims] (1) propylene carbonate (2-oxo-4)
-Methyl-1,3-dioxolane) as an active ingredient.