JPH0566819B2 - - Google Patents

Description

[Detailed description of the invention]

INDUSTRIAL APPLICATION FIELD The present invention relates to a carrier having an excellent deodorizing effect. BACKGROUND ART Regarding deodorants or deodorizing materials in which a porous carrier supports deodorizing ingredients separated from plants,
The applicant has already filed the applications listed below. JP-A-57-6657 and JP-A-57-
Publication No. 66757: A deodorizing material in which an extract from a plant of the Camellia family is supported on a clay material. JP-A-59-96: A deodorizing textile product in which a component separated from a plant of the Camellia family is supported on textile products such as woven fabrics and non-woven fabrics. Utility Model Application Publication No. 59-70719: Porous material inside,
A filter in which at least one of the inside or the outer skin of a multilayer structure whose outer skin is made of an air-permeable packaging material is impregnated with an extract or distillate from a plant of the Camellia family. Utility Model Application No. 61-150031: A deodorizing structure in which a deodorizing agent such as the dry distillate of a plant of the Camellia family is attached to an expandable handkerchief material made by laminating and integrating a large number of thin sheets. In addition to the applications filed by the present applicant, there are numerous applications regarding deodorants or deodorizing materials in which deodorizing components separated from plants are supported on porous carriers. For example, Japanese Patent Application Laid-Open No. 51-27882 discloses that hydrolysates of extracts from various plants are mixed with silica gel, diatomaceous earth, vermiculite, carbon grains,
There is a disclosure regarding an air purifying agent impregnated with pumice grains, brick pieces, etc. Problems to be Solved by the Invention However, when a deodorant or deodorizing material in which a porous carrier carries a deodorizing component separated from plants is used for purposes such as filters in air conditioners, Even if the desired deodorizing effect is achieved at the beginning of use, the deodorizing effect may change or decrease during use.
The deodorizing effect sometimes varied or decreased depending on the climate. The present inventors conducted various studies based on the idea that the deodorizing effect of a plant-derived deodorant component supported on a carrier may be affected by the humidity of the atmosphere, and as a result, they discovered the present invention. I've reached it. Means for Solving the Problems The present invention is based on the following technology: ``A deodorant component (B) extracted from plants or separated by carbonization is added to a porous carrier (A).
A deodorizing carrier supported together with a deliquescent or highly hygroscopic compound (C). ” is its gist. The present invention will be explained in detail below. As the porous carrier (A), fibers, fiber lumps,
Fiber-based carriers (including inorganic fibers and mineral fibers) such as fiber bundles, woven fabrics, non-woven fabrics, knitted fabrics, textile products, pulp, paper, paper products (cardboard, honeycomb, etc.); silica, alumina, zeolite, perlite, clay minerals Inorganic carriers consisting of particles, crushed pieces, molded products, sintered products, etc. of unglazed ceramics, ceramics, metals, glass, etc.; Plastic carriers such as plastic particles, foamed plastics; Rice husks, buckwheat husks,
Natural product carriers such as sawdust and baked products of these;
etc. "Having porosity" includes both the case where the carrier itself is porous and the case where there are countless voids between the carriers. As the deodorizing ingredient (B), various plants such as
Deodorizing ingredients extracted or separated by carbonization from plants such as Camellia, Lamiaceae, Lauraceae, Myrtaceae, Cucumberaceae, and Malvaceae are used. In particular, the leaves of plants of the Camellia family, such as tea, sasanqua, camellia, sakaki, and motsukoku, are carbonized under reduced pressure to produce a concentration of 180 to 200
It is particularly preferable to use a dry distillate that is boiled at a temperature of 0.degree. C. and has a particularly high deodorizing power. Examples of deliquescent or highly hygroscopic compounds (C) include salts, acids, which exhibit deliquescent properties when exposed to moisture in the air, or which exhibit the property of strongly absorbing moisture in the air;
Alkalies and the like are used, and deliquescent or highly hygroscopic salts are particularly practical. Specific examples of such compounds (C) include lithium chloride, crude sodium chloride, crude potassium chloride, calcium chloride, magnesium chloride, ammonium magnesium chloride, sodium magnesium chloride, potassium magnesium chloride, manganese chloride, potassium manganese chloride, chloride Antimony, cobalt ammonium chloride, zinc chloride, iron chloride, bismuth chloride, beryllium chloride, nickel chloride, nickel ammonium chloride, copper chloride, chromium chloride;
Lithium bromide, beryllium bromide, calcium bromide, zinc bromide, copper bromide, iron bromide, cobalt bromide,
Cadmium bromide; lithium iodide, sodium iodide, magnesium iodide, calcium iodide,
Iron iodide, nickel iodide; sodium nitrite,
Potassium nitrite, magnesium nitrite; ammonium nitrate, lithium nitrate, sodium nitrate, calcium nitrate, beryllium nitrate, magnesium nitrate, manganese nitrate, cerium nitrate, ammonium cerium nitrate, iron nitrate, copper nitrate; lithium chlorate, calcium chlorate, chloric acid Magnesium, zinc chlorate, cadmium chlorate, cobalt chlorate,
Copper chlorate; potassium carbonate; lithium sulfate, zinc ammonium sulfate, antimony sulfate, iron sulfate, cadmium ammonium sulfate; ammonium thiosulfate; potassium phosphate; ammonium phosphite, potassium phosphite, hydrazinium phosphite; hypophosphorous acid Sodium, potassium hypophosphite; sodium permanganate, calcium permanganate, strontium permanganate, magnesium permanganate, zinc permanganate; phosphoric acid; sodium hydroxide, potassium hydroxide; etc. , select the appropriate one according to the purpose, usage environment, etc. A combination of two or more types is also possible. Note that even if a super absorbent resin is used in place of compound (C), the effect of improving the deodorizing effect is small. The amount of the deodorizing component (B) supported on the porous carrier (A) cannot be determined uniformly because the optimal range varies greatly depending on the type of carrier (A) and the type of deodorizing component (B). However, if the dry distillate fraction of Camelliaaceae plants, which has a large deodorizing effect, is used as the deodorizing ingredient (B), for example, 0.01
~10% by weight. The amount of the deliquescent or highly hygroscopic compound (C) supported on the porous carrier (A) also depends on the type of carrier (A), the type of deodorizing component (B), and the type of compound (C). Although the optimum range cannot be definitively determined as it varies greatly, it is often selected from the range of 0.1 to 50% by weight based on the carrier (A). A method for supporting the deodorizing component (B) and the compound (C) on the carrier (A) is to add the compound to a solution containing the deodorizing component (B).
A method is employed in which (C) or a solution containing the same is mixed, this mixed solution is applied to the carrier (A) by means such as coating, impregnating, or spraying, and then drying. Although it is possible to separately support the solution containing the deodorizing component (B) and the solution containing the compound (C) on the carrier (A), the loading operation requires two steps, and the solution containing the deodorizing component (B) and compound (C)
Compared to the method of supporting a mixture of the deodorizing component (B) and the compound (C) on the carrier (A), it It will be disadvantageous. The carrier of the present invention is useful as a filter for an air conditioner, an air cleaner, a deodorizer, a blower/exhaust fan, a deodorizing agent or deodorizing material for a refrigerator, a deodorizing agent or deodorizing material for indoor or car interiors, etc. It is. Effect When the carrier of the present invention is brought into contact with an atmosphere containing odor components, the odor components in the atmosphere are captured by the plant-derived deodorizing component (B) supported on the carrier (A). In this case, the carrier (A) is in a wet state due to compound C, so the odor component is likely to adhere to it.
The capture of odor components by the deodorizing component (B) is accelerated. Since the deodorizing component (B) is kept moist with water by the compound (C), the captured odor components is decomposed or included and becomes odorless. Generally, the deodorizing ability of plant-derived deodorants is reduced by drying, but when the carrier of the present invention is used, the deodorizing component (B) is applied to the surface of the carrier (A) in a microscopic manner. This means that wet processing is required. Examples Next, the present invention will be further explained with reference to Examples.
Hereinafter, "%" means % by weight. Support (A) Porous support (A) is made of pottery stone, muscovite, and kibushi clay as raw materials and heated under an oxidizing atmosphere at a temperature.
Unglazed particles (A-
1) was prepared. Deodorizing ingredient (B) Tea leaf powder is carbonized under reduced pressure of 20mmHg and heated to 180℃.
The distillate that boiled at ~200°C was collected in propylene glycol to obtain a 20% solution of the dry distillate in propylene glycol. This solution was diluted 10 times with water to obtain a deodorizing component-containing liquid (B-1). Compound (C) As a deliquescent or highly hygroscopic compound (C), lithium chloride (C-1), crude sodium chloride (C-2), and calcium chloride (C-3) were prepared. Hygroscopicity test Lithium chloride (C-1), crude sodium chloride (C-2), and calcium chloride (C-3) were added to the above deodorizing component-containing liquid (B-1) at 5% and 10%, respectively.
Unglazed particles (A-1) were added to a solution containing 15% of the mixture, then pulled out, dried at 60°C for 12 hours, and subjected to a test. For comparison, a test was also conducted in which the unglazed particles (A-1) were added to the deodorizing component-containing liquid (B-1) and dried. The above dried carrier was left indoors, and
Weight changes were measured over 48 hours. The results of the hygroscopicity test are shown in Figures 1-3. Figure 1 shows the case when lithium chloride (C-1) is used, and Figure 2 shows the case when crude sodium chloride (C-2) is used.
FIG. 3 shows the case using calcium chloride (C-3). In each figure, 0% means that only the deodorizing component-containing liquid (B-1) was supported and the compound (C) was not supported. From FIGS. 1 to 3, it was observed that by supporting Compound (C), a considerable weight increase was observed compared to the case where Compound (C) was not supported, and its hygroscopic effect was confirmed. Deodorizing test A solution in which 15% each of lithium chloride (C-1), crude sodium chloride (C-2), and calcium chloride (C-3) were added to the above-mentioned deodorizing component-containing liquid (B-1) was unglazed. Particles (A-1) were added, then taken out and dried at 60°C for 12 hours. The supported amount of dry distillate is 0.04% in net, (C-1), (C-2), (C-3)
The supported amount was 3% in all cases. 500 g of the obtained carrier was filled into a mesh body to form a filter, and the filter was set in an air conditioner in a 1 m ³ airtight container. Ammonia was added to a concentration of 30 ppm in a sealed container, the air conditioning fluid was operated at a wind speed of 2.0 m/sec, and the concentration of residual ammonia remaining in the sealed container was measured over time using a detection tube. Similarly, store trimethylamine in a closed container.
The concentration of residual trimethylamine remaining in the sealed container was measured over time using a detection tube by adding the solution to a concentration of 33 ppm and operating the air conditioner at a wind speed of 2.0 m/sec. As a comparative example, a similar experiment was conducted in which unglazed particles (A-1) were added to the deodorizing component-containing liquid (B-1) and dried. As a reference example, an experiment was also conducted in which a small amount of acrylic superabsorbent resin (D-1) was used in place of compound (C). Table 1 shows the results when ammonia was used as the odor component, and Table 2 shows the results when trimethylamine was used as the odor component.

【table】

[Table] A polyester-rayon blend nonwoven fabric (A-2) with a basis weight of 74 g/m ² was used as the carrier (A), and lithium chloride (C
-1), a solution containing 10% each of crude sodium chloride (C-2) and calcium chloride (C-3) was sprayed thereon, and then dried at 60°C for 12 hours. The supported amount of carbonized distillate is 0.2% in net, (C-1), (C-2),
The supported amount of (C-3)) was 10% in all cases. 40 g of the obtained carrier was set as a filter in the above-mentioned 1 m ³ airtight container, and the same deodorization test as above was conducted. As a comparative example, a similar experiment was conducted in which the deodorizing component-containing liquid (B-1) was sprayed onto the nonwoven fabric (A-2) and dried. Table 3 shows the results when ammonia was used as the odor component, and Table 4 shows the results when trimethylamine was used as the odor component.

【table】

[Table] Effects of the Invention When the carrier of the present invention, that is, a carrier in which the compound (C) is supported together with the plant-derived deodorizing component (B) on the carrier (A), is used as a deodorant or a deodorizing material. , the deodorizing ability is prevented from decreasing due to drying of the deodorizing component, and the odor in the atmosphere is quickly removed compared to when the deodorizing component (B) is simply supported on the carrier (A). , the deodorizing performance is also greatly improved. Furthermore, the deodorizing effect does not fluctuate or decrease during use, nor does it fluctuate or decrease depending on the climate, so that a stable deodorizing ability is constantly exhibited.

[Brief explanation of the drawing]

Figures 1 to 3 are graphs showing the results of the hygroscopicity test, and Figure 1 shows the results when lithium chloride was used.
Figure 2 shows that when crude sodium chloride is used, the third
The figure shows the case using calcium chloride.

Claims (1)

[Claims] 1. A deodorizing component (B) extracted from plants or separated by carbonization is supported on a porous carrier (A) together with a deliquescent or highly hygroscopic compound (C). A deodorizing carrier. 2. The carrier according to claim 1, wherein the compound (C) is a salt having deliquescent property or high hygroscopicity. 3. The carrier according to claim 1, wherein the deodorizing component (B) is a dry distillate of a plant belonging to the Camellia family.