JPH0452148B2 - - Google Patents

Description

[Detailed description of the invention]

(Industrial Application Field) The present invention relates to a novel deodorizer, and more specifically,
The active ingredients are (A) alum, (B) a copper compound, (C) an oxycarboxylic acid compound, an oxocarboxylic acid compound, an organic acid selected from ethylenediaminetetraacetic acid, succinic acid, and fumaric acid, and (D) an ascorbic acid compound. Regarding a new deodorizer. (Conventional technology) Alum is used for pigments, pharmaceuticals,
It is used for a variety of purposes, including water purifiers, food additives, cosmetic raw materials, and various catalysts for paper manufacturing, and recently, its use as a deodorizing agent has been attracting attention.
However, when an alum aqueous solution is used to deodorize basic odors such as ammonia, it causes precipitation and is poor in stability, and alum alone has problems in that it has poor deodorizing performance. In order to solve these problems, methods have been proposed in which the stability is improved by adding an organic acid to alum, and the deodorizing performance is improved by adding a copper compound to alum. However, when alum is used in combination with an organic acid and a copper compound, the organic acid exhibits an inhibitory effect on the copper compound, resulting in a problem in that excellent deodorizing effects cannot be obtained. (Problems to be Solved by the Invention) Therefore, the present inventors have conducted intensive studies to solve these drawbacks seen in the prior art, and have found that (A) alum, (B) copper compounds, and (C) oxy When (D) an ascorbic acid compound is blended into a composition consisting of an organic acid selected from carboxylic acid compounds, oxocarboxylic acid compounds, ethylenediaminetetraacetic acid, succinic acid, and fumaric acid, the stability of alum is improved, and
The present inventors have discovered that copper compounds have excellent deodorizing performance without impairing their functions, and have completed the present invention. (Means for Solving the Problems) Thus, according to the present invention, (A) 100 parts by weight of alum, (B) 0.01 to 100 parts by weight of a copper compound, (C) an oxycarboxylic acid compound, an oxocarboxylic acid compound , 5 to 100 parts by weight of an organic acid selected from ethylenediaminetetraacetic acid, succinic acid, and fumaric acid, (D) 5 to 100 parts by weight of an ascorbic acid compound, and optionally (E) water. agent is provided. Specific examples of alum as component (A) used in the present invention include potassium alum, burnt alum, ammonium alum, sodium alum, iron alum, and the like. The copper compound of component (B) may be any of inorganic acid salts, hydroxides, sulfides, organic acid salts, complexes, and oxides,
Specific examples include copper sulfate, copper nitrate, cuprous chloride, cupric chloride, cuprous bromide, cupric bromide, cuprous iodide, copper carbonate, cupric hydroxide, Cupric sulfide, copper cyanide, copper acetate, cupric citrate,
copper gluconate, copper malate, copper gluoxylate,
Examples include copper 2-ketoglutarate, copper pyruvate, copper oxaloacetate, copper pyrophosphate, copper chlorophyll, sodium copper chlorophyllin, potassium copper chlorophyllin, copper phthalocyanine, copper porphyrin, cuprous oxide, cupric oxide, etc. . Among these, inorganic acid salts are preferred from the viewpoint of cost and availability, and complexes are preferred from the viewpoint of stability. Component (C) is an organic acid selected from organic acids, oxycarboxylic acid compounds, oxocarboxylic acid compounds, ethylenediaminetetraacetic acid (EDTA), succinic acid, and fumaric acid, and among them, oxycarboxylic acid compounds and oxocarboxylic acid compounds are Awarded. Such oxycarboxylic acid compounds are oxycarboxylic acids or water-soluble salts thereof containing one or more hydroxyl groups and one or more carboxyl groups in the molecule, and specific examples thereof include lactic acid, hydroxyacetic acid,
Hydroxybutyric acid, malic acid, tartaric acid, 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, Examples include aliphatic or aromatic compounds such as p-hydroxybenzoic acid, gallic acid, and hydroxyphthalic acid, and water-soluble salts thereof such as sodium salts, potassium salts, and ammonium salts.
Among them, aliphatic compounds are prized. Further, oxocarboxylic acid compounds are oxocarboxylic acids or water-soluble salts thereof containing one or more aldehyde groups or keto groups and one or more carboxyl groups in the molecule, and specific examples thereof include glyoxylic acid, malonaldehydic acid, succinic acid, Compounds such as cinaldehyde acid, pyruvic acid, 2-ketobutyric acid, 4-acetylbutyric acid, 2-ketoglutaric acid, 4-keto-nvaleric acid, acetoacetic acid, oxomalonacetic acid, acetonedicarboxylic acid, their sodium salts, potassium Examples include water-soluble salts such as salts and ammonium salts. Examples of the ascorbic acid compound of component (D) are:
Examples include L-ascorbic acid, erythorbic acid, and alkali metal salts thereof. In addition, in the present invention, when the above-mentioned copper compound is organic acid copper or ascorbate copper, the above-mentioned
It is assumed that copper and component (C) or (D) are included even if component (C) or (D) is not added. The blending ratio of each compound in the present invention can be appropriately selected depending on the required performance of the target product, but usually the copper compound (B) is 0.01 to 100 parts by weight per 100 parts by weight of the alum (A). Preferably it is in the range of 0.02 to 50 parts by weight. The organic acid as component (C) is in the range of 5 to 100 parts by weight, and the ascorbic acid compound as component (D) is in the range of 5 to 100 parts by weight. If the amount of component (B) used is too small, the deodorizing performance may be poor, while if it is too large, it may be unfavorable in terms of toxicity. In addition, if the amount of component (C) used is too small, the stability of alum will be poor, and when applied to deodorizing basic odors such as ammonia, a precipitate may be formed. It may be inferior to On the other hand, if the amount of component (D) used is too small, the inhibitory effect of the organic acid on the function of the copper compound may not be suppressed, resulting in poor deodorizing performance.On the other hand, if the amount used is too large, the economic efficiency may be poor. There is. In addition, as long as it does not impair the effects of the present invention, it may be used in combination with existing deodorizers, disinfectants, antifungal agents, etc., and various additives such as pigments, colorants, stabilizers, antioxidants, etc. may be added as necessary. can be added. The method for preparing the deodorizing agent in 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 mist drying, etc. Examples include a method of mixing with Furthermore, the properties of the deodorizer are not particularly limited; for example, in addition to being used alone as an aqueous solution, powder, or tablet, the aqueous solution can be applied to impregnate paper, cloth, foam sheets, bulbs, fibers, etc. as necessary. It can also be used by impregnating, coating, or supporting a substance or an inorganic carrier. The inorganic carrier used in the present invention is not particularly limited as long as it can support the deodorizing agent, and specific examples include activated carbon, alumina, silica gel, zeolite, clay, bentonite, diatomaceous earth, acid clay, etc. can be mentioned. The shape of the inorganic carrier may be powder, granules, needles, fibers, etc., but is not particularly limited. When impregnating, coating, and supporting the target member, the amount of deodorizing agent used for the target member is not particularly limited and varies depending on the purpose and method of use, but is usually in the range of 10 to 20% by weight as a solid content. If the amount used is too small, the function may be insufficient, and on the other hand, if the amount used is too large, the economy may be poor. (Effects of the Invention) Thus, according to the present invention, it is possible to obtain a novel deodorizing agent that improves the stability of alum and has excellent deodorizing performance without impairing the function of its copper compound. (Example) The present invention will be described in more detail with reference to Examples below. In addition, parts and % in Examples and Comparative Examples
are based on weight unless otherwise specified. Example 1 Components (A), (B), (C) and (D) shown in Table 1, and 2
Prepare a valent iron compound in a predetermined ratio by adding distilled water and dissolving it so that the total amount becomes 100 g of an aqueous solution.
The pH at this time was measured. Note that 100 parts in the table corresponds to about 7 g. Next, 20 g of each aqueous solution was put into a 50 ml beaker, a 2.8% ammonia aqueous solution was added, and the pH was measured when a precipitate was formed. After putting 50mg of various aqueous solutions into a 100ml Erlenmeyer flask and sealing it tightly, add ethyl mercaptan (0.5
g/3N ₂ ) was added, and the amount of ethyl mercaptan in the gas phase was determined over time using gas chromatography after 30 minutes to evaluate the mercaptan deodorizing performance. The results are shown in Table 1.

【table】

Table 1 shows that the examples of the present invention are excellent in stability and deodorizing properties. Example 2 An aqueous deodorizing solution was prepared in the same manner as in Example 1 using each component shown in Table 2 in a predetermined ratio, and the deodorizing performance of mercaptan was measured. In addition, after putting 100mg of various deodorizing aqueous solutions into a 100ml Erlenmeyer flask and sealing it, add 50μ of a 2.8% ammonia aqueous solution, and perform gas chromatography for 10 minutes.
After several minutes, the amount of ammonia in the gas phase was quantified to evaluate the ammonia deodorizing performance. The results are shown in Table 2.

【table】

[Table] Example 3 Various carriers shown in Table 3 were impregnated with the aqueous deodorant solution of Experiment No. 1-2 prepared in Example 1, and then dried under reduced pressure to support 10% deodorizer in terms of solid content. A carrier was obtained. Using 100 mg of this carrier, the deodorizing performance of ammonia and mercaptan was investigated in the same manner as in Examples 1 and 2. For comparison, a similar experiment was also conducted using only the carrier. The results are also shown in Table 3.

Table 3 shows that the examples of the present invention exhibit excellent deodorizing performance even when supported on a carrier.

Claims (1)

[Claims] 1 (A) 100 parts by weight of alum, (B) 0.01 to 100 parts by weight of a copper compound, (C) an oxycarboxylic acid compound,
Organic acids selected from oxocarboxylic acid compounds, ethylenediaminetetraacetic acid, succinic acid and fumaric acid5
~100 parts by weight, (D) 5 to 100 parts by weight of an ascorbic acid compound, and optionally (E) water.