JPH0611293B2 - Functional composition - Google Patents

Description

The present invention relates to a functional composition, more specifically, (A) an acidic phosphoric acid compound and / or an acidic phosphonic acid compound, (B) a divalent iron compound, ( C) Oxycarboxylic acid compound and / or oxocarboxylic acid compound and optionally (D) water, which is a functional composition excellent in deodorant property, bactericidal property, antifungal property, etc. Regarding things.

(Prior Art) Conventionally, inorganic acids, sulfates, phosphates, phosphonates, organic acids and the like are known as effective deodorants for ammonia, amines and the like. Among them, phosphates and phosphonates have advantages such as excellent storage stability and heat stability, and that no precipitate is formed when deodorizing alkaline substances such as ammonia.
Poor deodorizing performance of hydrogen sulfide has been a problem.

On the other hand, divalent iron compounds such as ferrous sulfate and ferrous chloride are used for deodorizing agents, iron black, mordants, human waste treating agents, pharmaceuticals, leather,
It is used as a raw material for various purposes such as red iron oxide.
However, these divalent iron compounds have been problematic in that they are easily oxidized by oxygen in the air or dissolved oxygen and are inferior in stability, and they are not satisfactory in terms of deodorizing performance.

In order to deal with this problem, recently, a method of adding an oxycarboxylic acid or an oxocarboxylic acid to a divalent iron compound (Japanese Patent Laid-Open Nos. 61-106161 and 61-14671).
No. 8, etc.) have been developed.
Although the stability of the valent iron compound is temporarily improved, it is still not sufficient because of problems such as long-term stability and brown coloring when impregnated into paper or the like.

(Problems to be Solved by the Invention) The present inventors have, as a result of earnest research to solve these problems found in the prior art, (A) an acidic phosphoric acid compound and / or an acidic phosphonic acid compound, (A) B) divalent iron compound, (C)
A composition comprising an oxycarboxylic acid compound and / or an oxocarboxylic acid compound, and optionally (D) water,
The inventors have found that they are excellent in stability and deodorizing performance of hydrogen sulfide and the like, and have completed the present invention.

(Means for Solving Problems) Thus, according to the present invention, (A) acidic phosphoric acid compound and / or acidic phosphonic acid compound, (B) divalent iron compound, (C) oxycarboxylic acid compound and / or oxo Provided is a functional composition containing a carboxylic acid compound and optionally (D) water.

The component (A) used in the present invention is an acidic phosphoric acid compound and /
Or an acidic phosphonic acid compound, for example, phosphoric acid, pyrophosphoric acid, metaphosphoric acid, hydroxyethylidene-1,1
-Diphosphonic acid, aminotrimethylenephosphonic acid, ethylenediaminetetramethylenephosphonic acid, and acid salts thereof. Examples of such salts include sodium, potassium, calcium, aluminum, zinc and ammonium salts. Among the above compounds, acid pyrophosphate is preferred.

Specific examples of the divalent iron compound as the component (B) include ferrous sulfate, ferrous ammonium sulfate, ferrous chloride, and ferrous nitrate, but sulfuric acid is used because of its cost and availability. Ferrous iron is most often used.

The oxycarboxylic acid compound and oxocarboxylic acid compound as the component (C) may be used alone or in combination. The oxycarboxylic acid compound is an oxycarboxylic acid or a water-soluble salt containing at least one hydroxyl group and one or more carboxyl group in the molecule, and specific examples thereof include lactic acid, hydroxyacetic acid, hydroxybutyric acid, malic acid, tartaric acid, and glyceric acid. , Citric acid, α-methylmalic acid, β
-Hydroxyglutaric acid, desoxalic acid, monoethyl tartrate, monoethyl citrate, gluconic acid, galactaric acid, glucuronic acid, ketogluconic acid, salicylic acid, p-
Examples thereof include aliphatic or aromatic compounds such as hydroxybenzoic acid, gallic acid and hydroxyphthalic acid, and water-soluble salts such as sodium salts, potassium salts and ammonium salts thereof. Among them, aliphatic compounds are prized.

Further, the oxocarboxylic acid is an oxocarboxylic acid compound or a water-soluble salt thereof having one or more aldehyde groups or keto groups and carboxyl groups in the molecule, and specific examples thereof include glyoxylic acid and malonaldehyde acid. Compounds such as succinaldehyde acid, pyruvic acid, 2-ketobutyric acid, 4-acetylbutyric acid, 2-ketoglutaric acid, 4-keto-n valeric acid, acetoacetic acid, oxomalonic acid, and acetonedicarboxylic acid, their sodium salts, Water-soluble salts such as potassium salts and ammonium salts are exemplified.

The compounding ratio of each compound in the present invention can be appropriately selected depending on the required performance of the target object, but usually 100 parts by weight of the component (A), 2 parts by weight or more of the component (B), preferably 5 to 100 parts.
The amount is 0 parts by weight, more preferably 10 to 500 parts by weight. On the other hand, the component (C) is 1 to 1000 parts by weight, preferably 5 to 500 parts by weight.

In this case, if the amount of the component (A) is too small, the stability may be poor, and if it is excessively large, the deodorizing performance of hydrogen sulfide or the like may be poor. Further, if the amount of the component (C) is excessively small, the stability may be poor, and conversely, if it is excessively large, the economical efficiency may be poor.

Further, as long as the effects of the present invention are not impaired, existing deodorants, deodorants, germicides, fungicides and the like may be used in combination, pigments,
Various additives such as colorants, stabilizers and antioxidants can be added as necessary.

The method for preparing the composition in the present invention is not particularly limited, and for example, a method of uniformly dissolving each component into an aqueous solution, a method of drying the aqueous solution by freeze-drying, atomization drying, etc., a uniform crystal powder And the like.

Further, the property of the composition is not particularly limited, and for example, an aqueous solution, a powder or a tablet may be used alone, and the aqueous solution may be impregnated and applied to paper, cloth, foamed sheet, pulp, fiber or the like as necessary. It is also possible to use it by impregnating, coating and supporting a substance and an inorganic carrier. The inorganic carrier used in the present invention is not particularly limited as long as the composition can be supported, and specific examples include activated carbon, alumina, silica gel, zeolite, clay, bentonite, diatomaceous earth,
Acid clay etc. are mentioned. The shape of the inorganic carrier may be powder, granules, needle-like fibers or the like, but is not particularly limited. In the case of impregnation, coating and supporting, the amount of the composition used with respect to the target member is not particularly limited and varies depending on the application and method of use, but is usually in the range of 10 to 20% by weight as solid content. If the amount used is too small, the function may be insufficient, and if it is excessively large, the economy may be poor.

The composition of the present invention thus obtained is useful as a deodorant, a bactericide, a fungicide and the like.

(Effects of the Invention) Thus, according to the present invention, it is possible to obtain a composition having improved stability as compared with the prior art and excellent deodorizing performance of hydrogen sulfide and the like.

(Example) Hereinafter, the present invention will be described more specifically with reference to Examples. Parts and% in Examples and Comparative Examples are based on weight unless otherwise specified.

Example 1 The component (D) was added and dissolved so that the total amount of the components (A), (B) and (C) shown in Table 1 was 10%, and a sample aqueous solution was prepared. Was placed in a 50 ml beaker, a glass plate was put on the beaker, and appearance changes of the aqueous solution were observed at the time of preparation and after standing for 20 days.

Also, after pouring 100 mg of various aqueous solutions into a 100 ml Erlenmeyer flask and pouring, 50 μl of 2.8% ammonia aqueous solution was added, and the appearance of the solution was observed after 30 minutes, and the amount of ammonia in the gas phase portion was measured by gas chromatography. It was quantified and evaluated as the ammonia deodorizing performance.

On the other hand, after putting 1 g of each aqueous solution into a 100 ml Erlenmeyer flask and purging, 1 ml of gas containing 0.02 mg of hydrogen sulfide was injected,
The amount of hydrogen sulfide in the gas phase was quantified by gas chromatography to evaluate the hydrogen sulfide deodorizing performance. The results are shown in Table 1.

It can be seen from Table 1 that the examples of the present invention maintain the initial appearance for a long period of time, are excellent in system stability, and are also excellent in deodorizing performance of ammonia and hydrogen sulfide. In contrast,
When the component (A) alone (Experiment No. 1-12) was inferior in deodorizing hydrogen sulfide, the two components (B) and (C) (Experiment No. 1-
In the case of 14), it can be seen that when left for a long period of time, coloring occurs and the stability performance is poor.

Example 2 Using the predetermined amounts of the components (A), (B) and (C) shown in Table 2, (B)
A sample aqueous solution was prepared by adding and dissolving the component (D) so that the amount of the component was 10%. Gauze was dipped in each of the obtained sample aqueous solutions to remove the excess sample and then air-dried.
The presence or absence of coloration of the gauze after the elapse of time was examined. The results are shown in Table 2.

From these results, it can be seen that the inventive examples are excellent in stability.

Example 3 A predetermined amount of each component shown in Table 3 was added with water to dissolve it, and subtractive drying was performed to obtain a dry powder, which was then left in a hot air oven at 110 ° C. for 2 hours to observe a change in appearance. The results are shown in Table 3.

It can be seen from Table 2 that the inventive examples are excellent in thermal stability.

Claims (1)

[Claims] 1. An (A) acidic phosphoric acid compound and / or an acidic phosphonic acid compound, (B) a divalent iron compound, (C) an oxycarboxylic acid compound and / or an oxocarboxylic acid compound, and (D) if necessary. A functional composition comprising water.