JPS62231665A - Deodorant composition - 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 (Industrial Application Field) The present invention relates to a deodorizing composition containing a divalent iron compound as a main component.
The present invention relates to a highly stable deodorizing composition containing at least one compound selected from a sorbic acid compound, (B) an oxycarboxylic acid compound, and (C) an oxycarboxylic acid compound.

(Prior art) Conventionally, as a deodorizing method for bad odors such as toilets, trash cans, refrigerators, etc., especially ammonia odor, methyl mercaptan odor, hydrogen sulfide odor, trimethylamine odor, etc., ■Method of masking malodorous components with aromatic substances such as fragrances; ■Method of neutralizing acidic or basic malodorous components with basic or acidic substances;■Method of removing malodorous substances with basic or acidic substances; Known methods include chemically reacting with substances containing citric acid, maleic acid, and glyoxal as main components to remove them.

However, these methods have the following drawbacks. First, ■method of adsorbing and removing malodorous components using porous materials has a low adsorption capacity for basic gases such as ammonia;
Also, the porous material must be replaced frequently due to its limited adsorption capacity. ■Since the method of masking malodorous components does not essentially remove them, different odors remain, and in some cases, aromatic substances may become a new source of malodors. (2) Neutralization with acidic or basic substances and (2) Chemical removal using citric acid, etc., are limited in the number of malodorous components that can be removed. For example, the method of neutralizing with acidic substances is only effective against basic malodorous components.
In addition, methods using citric acid or maleic acid are relatively effective against ammonia and amines, but cannot remove mercaptans. In the method of removing the odor directly, the deodorizing agent lacks stability and often changes during storage and loses its deodorizing effect.

Furthermore, even though conventional deodorizing agents have excellent deodorizing effects, many of them are harmful to the human body or undesirable in terms of food hygiene.

There is a desire to develop effective means to solve the above drawbacks, and various studies are being conducted. -132937) has been developed.

However, this method has disadvantages in that ViL-ascorbic acid is expensive, is limited to L-ascorbic acid, has insufficient stabilizing effect, and is particularly poor in heat resistance.

(Problems to be Solved by the Invention) Therefore, the inventors of the present invention have attempted to solve these drawbacks seen in the prior art (after extensive studies, we have found that by blending a specific stabilizer with a divalent iron compound). The present inventors have discovered a deodorizing composition that is highly stable and effective in removing malodorous components, and have completed the present invention.

(Means for Solving the Problems) Thus, according to the present invention, a divalent iron compound is added as a stabilizer (At erythorbic acid compound, (B) oxycarboxylic acid compound, and (C) oxocarboxylic acid compound). A novel deodorizing composition is provided, which comprises at least one of the following compounds.

Specific examples of divalent iron compounds used in the present invention include:
Examples include ferrous sulfate, ferrous chloride, and ferrous nitrate, but ferrous sulfate is most preferably used due to cost and availability. At, (Bl
and (cl).

(The erythorbic acid compound of At is known as an antioxidant for foods, etc., but the present inventors have discovered that the erythorubic acid compound exhibits a remarkable effect as a stabilizer for divalent iron compounds that are very easily oxidized. (Japanese Patent Application No. 59-265482).These compounds may be used in the form of acids, but they are not used in the form of water-soluble salts such as sodium salts and potassium salts. You can also do that.

The oxycarboxylic acid compound (B) is an oxycarboxylic acid or a water-soluble salt thereof containing one or more hydroxyl group and one or more carboxyl group in the molecule, and specific examples include lactic acid, hydroxyacetic acid, hydroxybutyric acid, malic acid, etc. , tartaric acid, glyceric acid, citric acid, α-methylmalic acid, β-hydroxyglutaric acid, detuxaric acid, monoethyl tartrate, monoethyl citrate, gluconic acid, galafthalic acid, glucuronic acid, ketogluconic acid, salicylic acid,
Examples include aliphatic or aromatic compounds such as p-hydroxybenzoic acid, 2,4-dihydroxybenzoic acid, gallic acid, and hydroxyphthalic acid, and water-soluble salts thereof such as sodium salts, potassium salts, ammonium salts, etc. . Among them, aliphatic compounds are prized.

The oxocarboxylic acid compound (C) is an oxocarboxylic acid containing one or more aldehyde or keto groups and one or more carboxyl groups in its molecule, or a water-soluble salt thereof, such as glyoxylic acid, malon, etc. Aldehydic acid, succinaldehydic acid, pyruvic acid, 2-
Ketobutyric acid, 4-acetylbutyric acid, 2-ketoglutaric acid, 4
-ke)-N Compounds such as valeric acid, acetoacetic acid, ochinemalonic acid, oxaloacetic acid, acetonedicarboxylic acid, etc.
Water-soluble salts such as sodium salts, potassium salts, and ammonium salts are exemplified.

Each of these components (At, (B), and (cl) can be used in combination as appropriate. The amount of the stabilizer added in the present invention can be appropriately selected depending on the required performance of the target product, but it is usually a divalent stabilizer. 11.001 to 5 mol per mol of iron compound, preferably o, o o
The range is from s to 3 moles. If the amount used is too small, the stabilizing effect and deodorizing effect may be insufficient, whereas if the amount used is too large, the economy may be poor.

The method for preparing the deodorizing agent in the present invention is not particularly limited, and examples thereof include a method of uniformly mixing crystal powder, a method of mixing in a water bath, and the like. Furthermore, there are no particular restrictions on the form in which the deodorizer can be used (for example, in addition to using it alone as a powder, tablet, or aqueous solution, an aqueous solution can be used to impregnate materials such as paper, cloth, foam sheets, valves, fibers, etc.) and bentonite. It can also be used by impregnating, supporting, or coating a carrier such as activated carbon, zeolite, etc. When impregnating, supporting, or coating, there is no particular restriction on the amount of deodorizing agent used for the target member, and it depends on the purpose and use. Although it varies depending on the method, the solid content is usually in the range of 10 to 20% by weight.If the amount used is too small, the deodorizing effect may be insufficient; It may be less economical.

Furthermore, it may be used in combination with existing deodorizers as long as the effects of the present invention are not impaired.

The amount of the deodorizing agent of the present invention to be used varies depending on the intended use, concentration of malodorous components, environment, and other conditions, and is not limited.◇ (Effects of the Invention) Thus, according to the present invention, compared to the prior art As a result, a deodorizing composition with excellent stability and effective in removing malodorous components can be obtained.

(Example) The present invention will be described in more detail with reference to Examples below.

Example 1 3001n! Ferrous sulfate (F e 8
04.7H,O) 1 mole of crystal α and a predetermined amount of stabilizer shown in Table 1 were dissolved in distilled water to prepare a deodorizing solution 100d. Next, five doses of 28% aqueous ammonia were added, the mixture was sealed tightly with a rubber stopper equipped with a gas sampling cock, and the mixture was stirred for 10 minutes. Immediately after that, the ammonia concentration was measured by suctioning through the sampling port using a gas detection tube (dairy type gas detection tube for ammonia, model SA, C).In addition, the presence or absence of ammonia odor was checked through a sensory test. The appearance of the solution in the flask before and after addition of ammonia was observed.The results are also shown in Table 1.

Example 2 100 d of deodorizer liquid M obtained in Example 1 was left at room temperature for 15 days. Next, aqueous ammonia was added in the same manner as in Example 1, and the ammonia concentration, presence or absence of ammonia odor, and appearance of the bath liquid in the flask were examined. The results are shown in Table 2.

Example 3 A deodorizing agent solution was prepared in the same manner as in Example 1 using the stabilizer shown in Table 3, and heated at 100°C for 8 hours. Next, aqueous ammonia was added in the same manner as in Example 1. The ammonia concentration, the presence or absence of ammonia odor, and the appearance of the solution in the flask were examined. The results are shown in Table 3.

Table 3 The molar ratio of stabilizer to ferrous sulfate is shown.

Claims (1)

[Claims] Mono- and divalent iron compounds as stabilizers (A) erythorbic acid compound, (B) oxycarboxylic acid compound and (C)
A novel deodorizing composition comprising at least one compound selected from oxocarboxylic acid compounds.