JPS6384554A - Composition containing iron and copper - Google Patents

Abstract

(57) [Abstract] 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 composition containing iron and copper, and more specifically, to a composition containing (A) a divalent iron compound, (B) an oxycarboxylic acid compound and/or an oxycarboxylic acid compound. 7. Comprised of (C) a copper compound and optionally (E) water, it has excellent deodorizing properties, bactericidal properties, antifungal properties, etc.

The present invention relates to a composition containing iron and copper.

(Prior art) Divalent iron compounds such as ferrous sulfate and ferrous chloride are used as raw materials for a wide variety of applications, including deodorizers, iron black, mordants, human waste treatment agents, medicines, bookbinding, and red iron. has been done. but,
These divalent iron compounds tend to be easily oxidized by oxygen in the air or dissolved oxygen, resulting in poor stability, and their deodorizing performance is also unsatisfactory.

In order to deal with this problem, methods have recently been developed in which divalent iron compounds are added to oxycarboxylic acid, but although these methods improve the stability of divalent iron compounds, The deodorizing performance of mercaptans and the like has not yet been sufficient.

(Problems to be Solved by the Invention) The inventors of the present invention have conducted extensive studies to solve these drawbacks found in the prior art, and have found that (A) a divalent iron compound, and (B) an oxycarboxylic acid compound. and/or a copper-containing composition comprising a carboxylic acid compound, (C) a copper compound, and optionally (anhydrous), which improves the stability of the divalent iron compound and also contains a mercaptan, etc. The present inventors have discovered that by dramatically improving the deodorizing performance of , and further adding (D) an ascorbic acid compound, the deodorizing performance can be exhibited for a long period of time, and have completed the present invention.

(Means for determining problems) Thus, according to the present invention, (A) a divalent iron compound, (B) an oxycarboxylic acid compound and/or an oxycarboxylic acid compound, (C) a copper compound, and optionally (H5 A novel composition comprising water is provided.

Specific examples of the divalent iron compound as component (A) used in the present invention include ferrous sulfate, ferrous ammonium sulfate, ferrous chloride, and ferrous nitrate. Ferrous sulfate is most preferred because of its ease of use.

The oxycarboxylic acid compound and the oxycarboxylic acid compound of component (B) may be used alone or in combination. Oxycarboxylic acid compounds are oxycarboxylic compounds that contain one or more hydroxyl groups and one or more carboxyl groups in the molecule? specific examples include lactic acid, hydroxyacetic acid, hydroxybutyric acid, malic acid, tartaric acid, glyceric acid, citric acid, α-methylmalic acid,
β-hydroxyglutaric acid, denxaric acid, monoethyl tartrate, monoethyl citrate, gluconic acid, galaftaric acid, glucuronic acid, ketogluco/acid, salicylic acid, p-
Examples include aliphatic or aromatic compounds such as hydroxy-7benzoic acid, gallic acid, and hydroxyphthalic acid, and water-soluble salts thereof such as sodium salts, potassium salts, ammonium salts, and the like. Among them, aliphatic compounds receive the award.

In addition, ochynecargonic acid is an ochynecargonic acid containing one or more aldehyde or keto groups and one or more carboxyl groups in its molecule. specific examples include glyoxylic acid, malonaldehydic acid, succinaldehydic acid, pyruvic acid, 2-ketobutyric acid,
4-acetylbutyric acid, 2-ketoglutaric acid, 4-ke)-n
Valeric acid, acetoacetic acid, malonacetic acid, acetone dicar? compounds such as acid, their sodium salts,
Examples include water-soluble salts such as potassium salts and ammonium salts.

The copper compound of component (C) may be any of inorganic acid salts, organic acid salts, complexes, and oxides, and specific examples include sulfuric acid steel, nitrate steel, cuprous chloride, cupric chloride, bromide first copper,
Cupric bromide, cupric iodide, copper carbonate, cupric hydroxide, steel sulfide, cyanide steel, steel acetate, cupric citrate, copper gluconate, copper malate, copper glyoxylate , copper 2-ketoglutarate, copper pyruvate, oxaloacetate steel, copper pyrophosphate, copper chlorophyll, sodium copper chlorophyllin,
Examples include copper chlorophyllin potassium, phthalocanine steel, steel porphyrin, cuprous oxide, cupric oxide, and the like.

Inorganic acid salts are preferred from the viewpoint of cost and availability, and complexes are preferred from the viewpoint of safety.

In addition, in the present invention, when the above-mentioned copper compound is copper oxycargonate, copper oxycargonic acid, or ascorbic acid, it can be combined with steel (B) or ( :D) should be understood as containing the following ingredients.

As the 7-sulfuric acid compound of component (2), L-7 scorbic acid and nilinlupic acid are used, and these are known as antioxidants for foods and the like.

These compounds may be used in the form of acids, but also in the form of water-soluble salts such as sodium salts, potassium salts, etc.

The blending ratio of each compound in the present invention can be selected as appropriate depending on the required performance of the target product, but usually 0.5 to 500 parts by weight of component B, preferably 1 to 100 parts by weight of the divalent iron compound. -200 parts by weight. On the other hand, component (C) is 0.01 to 200 parts by weight, preferably 0.02 to 50 parts by weight.
! Parts by weight, more preferably from 0.05 to 20 parts by weight.

(B) If the amount of component used is too small, the stability of the divalent iron compound will be poor, and when it is applied due to the bad odor of alkaline substances such as ammonia, it may form a precipitate and be difficult to use. If the amount is too high, it may be uneconomical.

On the other hand, if the amount of component (C) used is too small, the deodorizing performance may be poor, whereas if it is too large, it may be unfavorable in terms of toxicity.

Furthermore, in the present invention, by adding component (D) to components (A), (B), and (C), deodorizing performance can be maintained for a long period of time. (The blending amount of the cormorant component is 0.01 to 1 part by weight per 100 parts by weight of the divalent iron compound.
00 parts by weight, preferably in the range of 0.02 to 50 parts by weight.

In addition, as long as it does not impair the effects of the present invention, it may be used in combination with existing deodorants, deodorizers, bactericidal agents, antifungal agents, etc., or pigments,
Various additives such as colorants, stabilizers, and antioxidants can be added as necessary.

The method for preparing the composition of the present invention is not particularly limited, and examples include a method of uniformly dissolving each component to form an aqueous solution, a method of drying the aqueous solution by freeze drying, powder bed drying, etc., a crystal powder Examples include a method of uniformly mixing.

Further, the properties of the composition are not particularly limited, and for example, in addition to being used alone in the form of an aqueous solution, powder, or tablet, an aqueous solution can be used as needed, and it can be used as an impregnating coating on cloth, foam sheets, foam sheets, fibers, etc. It can also be used by impregnating, coating, or supporting a suitable substance or inorganic carrier.

The inorganic carrier used in the present invention is not particularly limited as long as it can support the composition, and specific examples include activated carbon, alumina, silica gel, zeolite, clay, bentonite, kerosene, and acidic white clay. can be mentioned. The shape of the inorganic carrier may be powder, granules, needles, fibers, etc., but is not particularly limited. When impregnating, coating, or supporting, there is no particular restriction on the amount of the composition used for the target member. The solid content is usually in the range of 10 to 20% by weight, although it varies depending on the purpose and method of use.

If the amount used is too low, the function may be insufficient.
On the other hand, if it is excessively large, it may be uneconomical.

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

(Effects of the Invention) Thus, according to the present invention, the stability of divalent iron compounds can be improved, and the deodorizing performance of mercaptans and the like can be excellent, and the performance can be maintained over a long period of time.

(Example) The present invention will be described in more detail with reference to Examples below. Note that parts and parts in Examples and Comparative Examples are based on weight unless otherwise specified.

Example 1 Predetermined amounts of components (A), (B), and (C) shown in Table 1 were dissolved in distilled water to make a total of 20 g of an aqueous solution.

Next, the obtained water W! ! Transfer the liquid to a 100m Erlenmeyer flask.
After adding om9 and *a, add ether mercaptan (0,5
11/3tN2) was added, and the amount of ether mercaptan in the gas phase portion after 30 minutes was determined by gas chromatography to evaluate the mercaptan deodorizing performance. The results are shown in Table 1.

In addition, each of the above aqueous solutions was placed in a 50 m beaker with a glass plate placed on it and left for 20 days, and the color of the aqueous solution and the formation of precipitate were observed. The results are shown in Table 1.

Table 1 shows that the examples of the present invention improve the stability of divalent iron compounds and are excellent in mercaptan deodorizing properties.

Example 2 An aqueous solution was prepared in the same manner as in Example 1 except for using the predetermined amounts of the components shown in Table Wc2, (B) and (C1), and the deodorizing performance and stability of mercaptans were investigated. 2
Shown in the table.

From Table 2, it can be seen that the examples of the present invention are excellent in stability of divalent iron compounds and deodorizing properties.

Furthermore, when the ammonia deodorizing effect was similarly investigated, the non-inventive example had a remarkable effect of suppressing precipitation formation during deodorization compared to the comparative example.

Example 3 CAI shown in Table 3, (Bl, (C1 and H)
An aqueous solution was prepared in the same manner as in Example 1, except that a predetermined ID (tt) was used, and the deodorizing performance of mercaptan was examined immediately after preparation and after release for one month. The results are shown in Table g3.

According to Table 3, (3), (B) and (C1 component only (Experiment 3-8.9) have excellent deodorizing performance immediately after, but cannot maintain that performance for a long period of time. , ■) It can be seen that the deodorizing performance can be maintained over a long period of time by adding the components (Experiments A3-1 to A3-7).

Example 4 The 7fL1-2 deodorizer water solution prepared in Example 1 was added to the fourth
After impregnating the various carriers shown in the table, the mixture was dried under reduced pressure to obtain a carrier supporting 10% of the deodorizing agent in solid content.

The mercaptan deodorizing performance of this carrier 11 was investigated in the same manner as in Example 1.

For comparison, a similar experiment was also conducted using only the carrier. The results are also shown in Table 1.

Table 4 1 Zeolite water number Higaku Kogyo Co., Ltd. Fissure granular synthetic zeolite, average particle size 2B 2 Bentonite: Tachibana Shokai Fissure 3 Shiri Crab cristobalite produced in Aomori Prefecture 4 Live
Charcoal: Kokusan Kagaku Co., Ltd. Ura granular activated carbon, average particle size 5m
From Table 11 and Table 4, it can be seen that the examples of the present invention exhibit excellent deodorizing performance even when supported on a carrier.

In addition, when the ammonia deodorizing performance of Mei 844-4 and 4-8 was similarly investigated, it was found that the present invention example (4-4) was the comparative example (4-4).
Compared to 8), it had excellent deodorizing properties.

Claims (1)

[Claims] 1. Contains (A) a divalent iron compound, (B) an oxycarboxylic acid compound and/or an oxycarboxylic acid compound, (C) a copper compound, and optionally (E) water. A composition comprising iron and copper, characterized by: 2, (A) divalent iron compound, (B) oxycarboxylic acid compound and/or oxocarboxylic acid compound (C) copper compound (
D) An iron- and copper-containing composition comprising an ascorbic acid compound and optionally (E) water.