JP4813271B2 - Deodorizing functional fabric and deodorizing functional agent - Google Patents

Description

  [Technical Field] The present invention relates to a fabric having a deodorizing function with respect to any of malodors such as tobacco odor and pet odor, and a volatile organic compound considered to be a causative substance of sick house, and a deodorizing functional agent used therein. Is.

  In order to improve the air environment in a living room, fabrics containing a deodorant by various methods have been conventionally used. For example, in the case of chemical adsorption, a basic substance such as calcium carbonate has been used as an acidic gas, and an acidic substance such as aluminum sulfate has been used as a basic gas. In addition, activated carbon, diatomaceous earth, and the like have been used for physisorption.

  However, these deodorants exhibit a deodorizing performance in specific gas types, such as sweat odors, tobacco odors, pet odors, aging odors, excretion odors, and garbage odors. The volatile organic compounds considered to be causative substances did not exhibit a wide range of deodorizing functionality. In order to demonstrate the wide range of deodorizing functionality, if each deodorant is inadvertently blended, the deodorant will deteriorate due to the reaction between the deodorants and the original performance cannot be demonstrated. It is effective against a wide range of odors, including the point of adsorbing organic compounds (VOC), but it is acetaldehyde, which is a component of tobacco odor, which is a problem as a bad odor in daily life, and isoform, which is one of pet odor components. High effects cannot be expected for aldehydes such as valeraldehyde and nonenal which is the main component of aging odor. Hydrazide compounds, which are amine compounds, are effective in deodorizing aldehydes, but when directly mixed with activated carbon, they inhibit the deodorizing effect of activated carbon on toluene. There is a tendency to decrease. The photocatalyst is effective in reducing the odor of living odors including volatile organic compounds, but if it is an ultraviolet response type, ultraviolet light is required, and even if it is a visible light response type, light having a wavelength of 550 nanometers or less is required. It is difficult to expect an effect when the room has low illuminance or the light source in the room is an incandescent lamp.

For example, Cited Documents 1 and 2 disclose that carpets having a deodorizing function are mixed with an inorganic substance such as activated carbon and a hydrazine derivative and applied to the fabric, but the activated carbon and the hydrazine derivative are mixed and used. If it, over time deodorizing ability is lowered against the aldehyde component, and in this way, it is impossible to obtain a deodorizing effect which is practical with respect to such as toluene.

  In addition, Cited Document 3 shows that when a hydrazine derivative and a deodorizing inorganic substance are used in combination, there is a wide range of deodorizing effects. In the examples, when a hydrazide compound and copper zeolite are used together, they are used alone. Although it is described as if the inorganic substance may be activated carbon, the deodorizing effect confirmed here is a partial one as shown in the examples. Actually, when a hydrazide compound and activated carbon are mixed and used, as described later, any deodorizing effect of the hydrazide compound and activated carbon is reduced, and it becomes impractical.

Furthermore, although Cited Document 4 discloses a hydrazine derivative as an effective deodorant for aldehyde components that cannot be deodorized with activated carbon, it is only that, and does not describe anything about the combined use of hydrazine derivative and activated carbon. . Patent Document 5 relates to a deodorant molded article having an excellent deodorizing property against odors such as ammonia, amines, hydrogen sulfide, mercaptans and the like, aldehydes contained in tobacco odor, and the like. A mixture of an inorganic compound such as amine and porous silicon dioxide fine particles and a compound composed of zinc and / or copper is used, but this is not intended to be used in combination with activated carbon, and for other bad odors, It does not work as it is.
JP 2005-198684 A JP 2001-218668 A JP 2000-14520 A JP-A-8-280781 Japanese Patent No. 3765147

  Therefore, the present invention regulates the composition of the deodorant, suppresses the reaction between the deodorants, and does not require ultraviolet light, without sweat, tobacco odor, pet odor, aging odor, excretion odor, It is an object to provide a deodorizing fabric that exhibits a wide range of deodorizing performance with respect to any of the odors of living such as garbage odor and volatile organic compounds (VOC) that are considered as causative substances of sick house. To do.

  In the present invention, by focusing on compounds having different functions of carbon, zinc or copper, and amine compounds, and combining them so that the deodorizing effect of each compound can be fully exhibited, The said subject was solved.

  That is, in the present invention, these three kinds of compounds are adhered to the fabric in a state where the carbon and the amine compound are not in direct contact with each other, thereby taking advantage of the characteristics of the respective deodorizers, sweat odor, tobacco odor, Deodorant fabric that exhibits a wide range of deodorizing performance against life odors such as pet odors, aging odors, excretion odors, garbage odors, and volatile organic compounds (VOCs) that are considered to be the cause of sick houses It was possible to provide

  In the present invention, it is generally preferable to use activated carbon effective for adsorption of volatile organic compounds (VOC) as carbon, and as a metal compound, zinc exhibiting a deodorizing effect against odors of hydrogen sulfide and mercaptans. Alternatively, metal compounds containing copper, such as zinc or copper oxides, hydroxides, chlorides, sulfates, acetates, citrates, etc. can be exemplified, and zinc silicate compounds, copper zeolite, etc. are used. Is preferred.

  Furthermore, as the amine compound, it is preferable to use a hydrazine compound particularly effective for adsorption of formaldehyde, acetaldehyde, acetic acid, etc., and examples of the hydrazine compound include adipic acid dihydrazide, azelaic acid dihydrazide, and succinic acid dihydrazide. Glutaric acid dihydrazide, oxalic acid dihydrazide, speric acid dihydrazide, sebacic acid dihydrazide, dodecanedioic acid dihydrazide, pimelic acid dihydrazide, malonic acid dihydrazide, isophthalic acid dihydrazide, terephthalic acid dihydrazide, polyacrylic acid hydrazide and the like.

  The use ratio of these compounds is not particularly limited, but it is important not to use the amine compound in a state of direct contact with carbon. When these are directly mixed and used, the deodorizing effect of carbon (detoluene) and the deodorizing effect (dealdehyde) of amine compounds are very poor.

For example, 1) Apply carbon to one surface of the fabric and apply amine compound to the other surface, or 2) Amine compound. Any method can be applied in which a porous inorganic substance (zeolite or the like) is supported on the surface of the fabric together with carbon. In addition, although a metal compound may be used in the state which contacts carbon or an amine compound, it is good to usually use it mixed with carbon.

  Adhesion to these fabrics may be carried out through an organic binder such as an acrylic resin used for ordinary resin coating, but when an amine compound is used alone, an aqueous solution is spray applied. It is also possible to use a method such as

  In the present invention, it is essential to use a metal compound together with carbon and an amine compound. If this metal compound is not present, the activated carbon and the amine compound can be applied so that they do not come into contact with each other. It will lack deodorizing effect. Moreover, even if carbon and a metal compound are used in combination, a deodorizing effect such as acetaldehyde cannot be achieved unless an amine compound is used. Furthermore, when an amine compound is not used, the combined effect of a metal compound containing zinc or copper cannot be expected.

  Usually, the amount of the metal compound containing zinc or copper and the amount of amine compound used may be about 1: 5 to 5: 1 by weight with respect to the amount of carbon used. For example, it may be prevented from coming into direct contact with carbon or an amine-based compound, for example, by supporting it on the surface.

Next, the present invention will be described in more detail based on examples.
<Example 1>
A polyester fabric (400 g / m ² basis weight) was used as the processing fabric.
A resin paste consisting of 10 parts by weight of activated carbon, 3 parts by weight of a zinc silicate compound, 0.4 parts by weight of hydroxyethyl cellulose as a fiber-based thickener, 20 parts by weight of acrylic resin and 40 parts by weight of water is applied to one side of the fabric. Coating was performed by a knife coating method, and the resin paste was dried and cured by heating in a drying furnace at 130 ° C. for 5 minutes. The coating amount after drying by knife coating was 80 g / m ² .

Furthermore, a treatment liquid consisting of 2 parts by weight of adipic acid dihydrazide and 98 parts by weight of water is coated on the surface not subjected to knife coating by a spray coating method, and the spray liquid is dried by heating in a drying furnace at 130 ° C for 5 minutes. Went. The coating amount was 2 g / m ² after drying after the application of the agent by spray coating.

<Example 2>
For the processing fabric used in Example 1, 10 parts by weight of activated carbon, 3 parts by weight of zinc silicate compound, supported amine compound (Kesmon NS-230 * registered trademark of Toa Gosei Co., Ltd., registered trademark) on one side of the fabric. ) A resin paste consisting of 7 parts by weight, 0.4 parts by weight of hydroxyethyl cellulose, 20 parts by weight of acrylic resin and 40 parts by weight of water is coated by a doctor knife coating method and heated in a drying furnace at 130 ° C. for 5 minutes. Thus, dry curing of the resin paste was performed. The coating amount after drying by knife coating was 80 g / m ² .

<Example 3>
A treatment comprising 2 parts by weight of a compound containing ferrous sulfate and sodium ethylenediaminetetraacetate and 98 parts by weight of water on the surface not coated with the resin paste, using the resin paste-coated fabric obtained in Example 2 The liquid was coated by a spray coating method, and the spray liquid was dried by heating in a drying furnace at 130 ° C. for 5 minutes. The coating amount was 2 g / m ² after drying after the application of the agent by spray coating.

<Comparative Example 1>
The raw fabric is referred to as Comparative Example 1.

<Comparative example 2>
In Example 2, a processed fabric was obtained in the same manner as in Example 2 except that a resin paste containing no zinc silicate compound and no supported amine compound was used.

<Comparative Example 3>
A processed fabric was obtained in the same manner as in Example 2 except that the resin paste containing no supported amine compound was used in Example 2.

<Comparative example 4>
In Example 2, a processed fabric was obtained in the same manner as in Example 2 except that a resin paste containing no zinc silicate compound was used.

<Comparative Example 5>
In Example 2, a processed fabric was obtained in the same manner as in Example 2 except that 2 parts by weight of adipic acid dihydrazide was used instead of 7 parts by weight of the supported amine compound.

  Table 1 shows the formulations of Examples and Comparative Examples. The numerical values in the table indicate the blending weight ratio of the active ingredients of the coating resin applied by resin paste coating. However, the numerical value in the parenthesis indicates the treatment agent spray-coated on the surface opposite to the surface subjected to the resin paste coating.

  Hereinafter, evaluation of the obtained processed fabric will be described. Evaluation items are deodorization performance and re-release suppression performance. As for acetaldehyde, measurement was also performed after heat load at 80 ° C. for 300 hours.

(Ammonia deodorizing performance)
A test fabric piece (7 cm × 7 cm) is put in a 3 L polyethylene bag, 2 L of ammonia gas adjusted to 92 ppm is injected, and the residual concentration of ammonia gas after 1 hour and 4 hours is measured with a gas detector tube (Gastech). The measurement was performed using Further, after the measurement, the bag interior was washed with pure air, 2 L of pure air was injected, heated to 80 ° C., and measured after 30 minutes.

(Hydrogen sulfide deodorizing performance)
The measurement was performed in the same manner as the ammonia deodorization performance measurement except that 60 ppm of gas was used instead of ammonia gas.

(Acetaldehyde deodorizing performance)
The same ammonia deodorization performance measurement was performed except that 95 ppm gas was injected using acetaldehyde gas instead of ammonia gas.

(Toluene deodorizing performance)
It carried out similarly to the said ammonia deodorizing performance measurement except having injected 60 ppm gas instead of ammonia gas using toluene gas.

  Table 2 shows the evaluation results. The numbers in the table represent the concentration in ppm.

Table 3 shows the results of evaluating odor reduction performance for each odorous species with respect to Example 2. The test method is as follows: a test fabric piece (7 cm × 7 cm) is put in a 3 L polyethylene bag, 2 L of various gases diluted to a predetermined concentration are injected, and the residual concentration after 4 hours is measured with a gas detector tube (manufactured by Gastec). ). The numerical value in the table is the deodorization rate% expressed by the following formula.
Deodorization rate = (initial concentration—the concentration in the bag after 4 hours) / initial concentration × 100

  As described above, the fabric of the present invention was coated with activated carbon and zinc silicate compound on one side and coated with hydrazide together with activated carbon and zinc silicate compound on Example 1 with adipic acid dihydrazide coated on the other side. As in Example 2 and Example 2, supported hydrazide was coated on one side together with activated carbon and zinc silicate compound, and ferrous sulfate was further coated on the back side. In addition, it exhibited excellent deodorizing properties for all of acetaldehyde and toluene, and was also excellent in the effect of removing acetaldehyde after heat load. On the other hand, in Comparative Examples 2 and 3 in which no amine compound (hydrazine compound) is used, the deodorizing effect of acetaldehyde is not recognized, and in Comparative Example 3, a zinc silicate compound is used. Regardless, only the same effect as Comparative Example 2 in which it was not used was obtained. Furthermore, even when an amine compound was used as a supported type, in the case where a zinc silicate compound was not used (Comparative Example 4), the deodorizing property of hydrogen sulfide was lacking. Furthermore, in Comparative Example 5 in which an amine compound (hydrazine compound) was used in combination with activated carbon, the deodorizing property with respect to toluene was lacking, and the deodorizing effect of acetaldehyde could not be expected.

  The product of the present invention can be used as a living odor such as sweat odor, tobacco odor, pet odor, aging odor, excretion odor, garbage odor, and volatile organic compounds (VOC) that are considered to cause sick house. In contrast, since it is a deodorizing fabric that exhibits a wide range of deodorizing performance, it is used in interior decorations such as carpets, rugs, chairs and other fabrics, and in vehicle interiors such as automobile seats, or air purifiers. It is useful for any of module parts such as filters and daily goods such as insoles of shoes.

Claims (6)

A fabric having a deodorizing function, wherein a metal compound containing carbon, zinc or copper (excluding a metal oxide) and an amine compound are adhered to the fabric surface, and the carbon and the amine A odor-reducing functional fabric, characterized in that it is attached in such a manner that the system compound is not in direct contact. A fabric having a deodorizing function, wherein a metal compound containing carbon, zinc or copper, and an amine compound are attached to the fabric surface, and the carbon and the metal compound are applied to one surface of the fabric, A deodorizing functional fabric characterized in that the amine compound is applied to the other surface of the fabric so that the carbon and the amine compound are not in direct contact with each other. The deodorizing functional fabric according to claim 1, wherein the amine-based compound is applied to one surface of the fabric together with the carbon in a state where the amine compound is supported on inert inorganic porous particles. The deodorizing functional fabric according to any one of claims 1 to 3, wherein the carbon is activated carbon. The deodorizing functional fabric according to any one of claims 1 to 4, wherein the amine compound is a hydrazide compound. A deodorizing functional agent comprising a mixture of a metal compound containing carbon and zinc or copper (excluding a metal oxide) and an amine compound supported on inert inorganic porous particles.