JPS62101250A - 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] [Field of Industrial Application] The present invention relates to a deodorizing agent that exhibits an excellent effect in removing ammonia odor and other bad odors, for example in toilets, trash cans, refrigerators, etc. Techniques and their problems] For example, as a means of deodorizing or deodorizing toilets, etc., there are two methods: 1. Masking with fragrance, 2. Adsorbing and removing bad odors with an adsorbent such as activated carbon, silica gel, or zeolite, 2. Or, focusing on the fact that many substances react with alkalis, there is a method of neutralizing malodorous substances with acid or alkali. ■ A method of removing malodorous substances by chemically reacting them with a substance whose main component is citric acid or maleic acid. Several methods have been proposed.

However, among the above methods, method (2) of masking with fragrance does not basically remove malodorous substances, so
Moreover, since it only uses the scent of fragrances, it leaves a foreign odor, and many people have allergies who cannot tolerate the scent of fragrances, so it is not desirable. The adsorption removal method using activated carbon, etc. has disadvantages such as the adsorption power decreases in a short period of time due to the low adsorption amount of these adsorbed substances, and therefore the adsorbed substances have to be replaced frequently, which is cumbersome. In addition, the method (2) of neutralizing with acid or alkali has a limited number of substances that can be removed, which limits its use as a deodorizing agent, and the method (2) of using citric acid or maleic acid Although it is relatively effective against ammonia and amines among malodorous components, it has the disadvantage that it is not effective in removing mercaptans.

Therefore, as an alternative to such means, a deodorizing method containing L-ascorbic acid and at least one type of iron (11 compounds) selected from ferrous sulfate, ferrous chloride, and ferrous nitrate is proposed. proposed by the agent (Japanese Unexamined Patent Publication No. 132937/1983)
has been done.

While this deodorizer does have desirable properties, these are not sufficient and more is needed.

[Disclosure of the Invention] In view of the above problems, while researching the deodorizing effects of various deodorizing agents, the present inventor used gallic acid as one component of the deodorizing agent, and found that other components For example, those containing mixtures thereof with iron-based substances such as ferrous salts such as ferrous sulfate, ferrous nitrate or ferrous chloride, or ferric salts such as ferric chloride, It has been found that it exhibits an extremely excellent deodorizing effect.

Fe
It has also been found that the deodorizing effect is greater when an anhydrous iron-based substance such as SO4 is used. That is, when an iron-based substance is used as a component of a deodorizing agent, it is desirable to remove as much H2C as possible, for example, by drying or the like.

Also, when comparing ferrous salts such as ferrous chloride and ferric salts such as ferric chloride, it is found that using ferrous salts such as ferrous chloride as the iron-based substance, these It was also found that a deodorizing agent containing a mixture of an iron-based substance and gallic acid has a better deodorizing effect.In addition, the mixing ratio of the iron-based substance and gallic acid as described above is 95% to 95%. It has also been found that a proportion of gallic acid of about 5 to 30% by weight relative to 70% by weight provides a highly desirable deodorizing effect.

Further, the deodorizing agent of the present invention can be produced by an extremely simple method of just mixing gallic acid and an iron-based substance, so it can be provided at an extremely low cost. It can be used in a solid form such as powder or granules, or in a liquid form dissolved in a solvent, or it can be used in a form impregnated into ceramic, paper, cloth, etc.

[Example 1] For example, about 10 to 30 meshes of granular FeSO4.H
2O90 weight and about 30 mesh of powdered gallic acid 10
The deodorizing agent of the present invention is obtained by sufficiently mixing and dispersing the deodorizing agent and the deodorizing agent of the present invention.

[Example 2] For example, about 50 to 70 meshes of powdered FeSO4.H
,,090 30 mesos by weight powdered gallic acid 1
0% by weight and are sufficiently mixed and dispersed to obtain the deodorizing agent of the present invention.

[Example 3] For example, about 90 to 110 meshes of powdered FeSO49
The deodorizing agent of the present invention is obtained by sufficiently mixing and dispersing powdered gallic acid of 0 weight and about 30 meth/unit of powdered gallic acid.

[Example 4] For example, about 90 to 110 menonyu of powdered Fe50.7
The deodorizing agent of the present invention is prepared by thoroughly mixing and dispersing about 30 m/y of powdered gallic acid 10 wt% and about 60 to 80 m/y of powdered activated carbon by weight of 20 wt%. I'll get it
Comparative Examples 1 to 4] Deodorizers were obtained in the same manner as in Examples 1 to 4 using L-ascorbic acid instead of gallic acid.

〔Characteristic〕

A glass evaporating dish containing aqueous ammonia at a predetermined concentration was placed at the bottom of the desiccator, and the above Examples 1 to 4 were placed at the bottom of the desiccator.
The deodorizers of Comparative Examples 1 to 4 were placed on top, and the desiccator was sealed and left for a predetermined period of time.Then, the concentration of ammonia water in each glass evaporation dish was titrated with sulfuric acid for titration.
The ammonia absorption rate was calculated based on the following formula, and the results are shown in Table 1.

Residual ammonia concentration Ammonia absorption rate (%) = 100-100 Ammonia concentration before absorption of deodorizer Table 1 In addition, fresh kamaboko and milt were used instead of ammonia water in the above test, and Example 4 and comparative example were used as deodorizers. The results are shown in Table 2. The results are shown in Table 2.

As can be seen from the ammonia absorption rate and malodor absorption tests using milt and kamaboko in Tables 1 and 2 above, the deodorizing effect of the deodorizer of the present invention is that of a mixture of L-ascorbic acid and ferrous sulfate. It has shown better effectiveness than other deodorizers.

Claims (5)

[Claims] (1) A deodorizer characterized by containing gallic acid and an iron-based substance. (2) The deodorizer according to claim 1, wherein the mixing ratio of gallic acid and iron-based material is about 5 to 30 to 95 to 70 by weight. (3) The deodorizer according to claim 1 or 2, wherein the iron-based substance is a ferrous salt. (4) The deodorizing agent according to claim 1 or 2, wherein the iron-based substance is a ferric salt. (5) The deodorizing agent according to claims 1 to 4, wherein the iron-based substance is anhydrous.