JPH0126302B2 - - Google Patents

Description

[Detailed description of the invention]

The present invention relates to a powdery or granular deodorant having an excellent deodorizing effect. Garbage generated from the kitchen must be stored in a garbage container until the garbage collection day, but during that time it emits foul odors such as rotten and rancid odors, making the surrounding area uncomfortable. However, no such measures have been taken so far. Furthermore, when fertilizers such as oil cake are applied to gardens or indoor plants, a peculiar odor lingers for a day or two, but few measures have been taken to remove this odor. The present invention aims to effectively eliminate this type of bad odor. The present invention resides in a powdery deodorant comprising a tea leaf extract or fraction (A) and a powdery carrier (B) containing at least a portion of a superabsorbent polymer, which has excellent effects as listed below. play. (1) If you sprinkle it on top of food waste or fertilizer after fertilization,
Bad odors can be immediately and effectively eliminated. (2) Moreover, since the deodorizing component is adsorbed or adhered to the powder carrier, it has sustained release properties and the deodorizing effect lasts for many days. (3) It is easy to handle because it can be simply sprinkled, and it is easy to store because it is in powder form. (4) Not only does it adsorb and remove newly generated odors, but it also absorbs moisture from the odor source and significantly slows down the progress of fermentation and spoilage. The tea leaf extract or fraction (A) in the present invention refers to an extract obtained by extracting tea leaves with water and/or an appropriate solvent such as an organic solvent, or an extract obtained by carbonizing tea leaves under reduced pressure. Distillate fraction (component that boils and distills out at 180 to 200℃ especially in the case of 20 mmHg), which contains flavanols, flavonols, and various other organic compounds, and distillate is particularly effective. . Among the above, typical characteristic values of the fraction are as follows. 276 by UV spectrum in 1000x aqueous solution
Shows maximum absorption at ±2mμ. Refractive index: n ²⁰ _D = 1.418±0.02 Optical rotation: α ²⁰ _D = +0.007° ± 0.002° Specific gravity: d ²⁰ ₂₀ = 1.025 ± 0.02 (However, the refractive index, optical rotation, and specific gravity are 20% (W/
W) Value measured in propylene glycol solution) The super absorbent polymer in the particulate carrier (B) containing at least a portion of the super absorbent polymer is tens to hundreds of times or more than 1,000 times its own weight. Polymers that absorb and retain water (pure water), such as polyethylene oxide crosslinked products, polyvinylpyrrolidone crosslinked products, sulfonated polyethylene crosslinked products, starch-(meth)acrylonitrile graft copolymer saponified products,
Hydrolyzed crosslinked polyacrylamide, self-crosslinked polyacrylate, crosslinked starch-(meth)acrylate copolymer, crosslinked polyvinyl alcohol, saponified vinyl ester-unsaturated carboxylic acid (ester) copolymer , saponified ethylene-vinyl ester-unsaturated carboxylic acid (ester) copolymer, and saponified hydroxyalkyl acrylate-acrylamide copolymer. The powdery carrier (B) may be only a superabsorbent polymer, but other powdery or granular materials are usually used in combination. Other suitable powders include clay minerals such as diatomaceous earth, kaolin, zeolite, and bentonite, which have excellent adsorption ability for the component (A),
In addition, calcium carbonate, talc, silicon dioxide, mica, calcium silicate, aluminum silicate, magnesium oxide, titanium oxide, zinc white,
Magnesium carbonate, barium sulfate, calcium sulfate, sodium sulfate, wood flour, cork powder, valve,
Examples include dextrin, shell powder, grain flour, and fiber powder. The blending ratio of the tea leaf extract or fraction (A) and the powdery carrier (B) containing at least a portion of the superabsorbent polymer can be varied widely as long as the mixture is powdery, but preferably (A) 0.01-30% by weight, (B) 99.99-70% by weight,
Particularly preferably (A) 0.1 to 10% by weight and (B) 99.9 to 90% by weight. If the proportion of (A) is too low, the deodorizing effect will be lacking, and if the proportion of (A) is too high, it will be difficult to form a powder or granule that is easy to spread, and this will be economically disadvantageous. In addition, it is sufficient that the superabsorbent polymer accounts for at least a part of the powder/grain carrier (B), but it is better to use the super absorbent polymer in combination with other powder/grain carriers than to use the super absorbent polymer alone. (A) is preferable because it maintains its deodorizing effect, is non-sticky, and is advantageous in terms of cost.
Therefore, when the entire particulate carrier (B) is 100 parts by weight,
It is highly practical to select the amount of super absorbent polymer from the range of 0.1 to 30 parts by weight. The combination of (A) and (B) above can be carried out by any method including a method of spraying or dropping (A) or a diluted solution of (A) onto (B) and mixing. The powdery deodorant of the present invention can be used in garbage containers, human waste tanks,
Spraying on odor sources in portable toilets, etc., spraying on top of fertilizer in storage or fertilizer after fertilization, residue from pulp factories, food factories, leather factories, etc.
Remains of experimental animals, processed shells of oysters and other shellfish,
It can be widely applied as a deodorant to spray on various odor sources such as surplus activated sludge. Further, the powdery deodorant of the present invention can be supported inside, between layers, or on the surface of a single-layer or multi-layer material such as paper, woven fabric, or non-woven fabric. Next, the powdery deodorant of the present invention will be further explained with reference to Examples. Hereinafter, "parts" and "%" are expressed on a weight basis. Example 1 A: 20 parts of a 220% aqueous solution of a fraction from tea leaf powder _B1 : Obtained by saponifying 98 mol% of the vinyl acetate component of a monomethyl maleate-vinyl acetate copolymer with a monomethyl maleate content of 3.5 mol%. It is a heat-treated product of monomethyl maleate-modified polyvinyl alcohol, which is
Powder with a particle size of 42 to 100 mesh that absorbs 120 times more pure water 12 parts B ₂ : Diatomaceous earth 50 parts B ₃ : Dextrin 18 parts The aqueous solution of A was sprayed onto the mixed powder of B ₁ , B ₂ and B ₃ above. After that, it was dried with hot air at a temperature of about 70°C. The obtained powdered deodorant was subjected to the following deodorization test. Deodorizing test Garbage generated from the kitchen was placed in a plastic container with a capacity of 40 ml for about 7 minutes, and about 10 g of the above powdered deodorizing agent was sprinkled on top of the container and the container was covered with a lid. The lid was then opened over time, and the odor was detected by six trained panelists. The odor intensity was judged in the following six stages. Odor intensity 0... No odor 1... Odor that can be detected by hand 2... Weak odor that tells you what the odor is 3... Odor that can be easily detected 4... Strong odor 5... Intense odor The results are shown in Table 1. Control Examples 1-2 When no deodorant was sprayed (Control Example 1), A
A deodorizing test was also carried out in the same manner as in Example 1 in the case where a mixed powder consisting of B ₁ , B ₂ and B ₃ without being mixed therein was sprayed (Control Example 2). The results are also shown in Table 1.

【table】

[Table] Also, after fertilizing the base of the plant in the flower pot with oil cake, the powdery deodorant of Example 1 was sprinkled on top of it,
Ten of these flowerpots were left in a closed room of 4.5 tatami mats, and after half a day and a day and a half, they were returned to the room to examine the degree of odor. Tests were conducted in the same manner for Control Example 1 and Control Example 2. The results are shown in Table 2.

[Table] Example 2 A: 20% aqueous solution of distillate from tea leaf powder 10 parts B ₁ : 25 parts of B ₁ used in Example 1 B ₂ : 30 parts of anhydrous sulfate B ₃ : Calcium carbonate 35 parts B above An aqueous solution of A was sprayed onto a mixed powder consisting of B ₁ , B ₂ and B ₃ and then dried with hot air to obtain a powder deodorant. Example 3 A: 8% alcohol-water mixed solvent solution of tea leaf powder extract 40 parts B ₁ : Polyethylene oxide crosslinked particles (particle size 50-100) that absorb 150 times its own weight of pure water
_B2 : Kaolin clay 50 parts A was mixed with the mixed powder of _B1 and _B2 and dried to obtain a powdered deodorant. Example 4 A: 5 parts of a 20% aqueous solution of a fraction from tea leaf powder B: 95 parts of saponified starch-acrylonitrile copolymer particles (particle size 40 to 60 mesh) that absorb 80 times its own weight of pure water To the above B After adding A and mixing well, the mixture was dried with hot air to obtain a powdery deodorant. The deodorants of Examples 2 to 4 above were sprinkled onto garbage in a container, and an odor test was conducted in the same manner as in Example 1. The results are shown in Table 3.

【table】

【table】

Claims (1)

[Scope of Claims] 1. A powdery deodorant comprising a tea leaf extract or fraction (A) and a powdery carrier (B) containing at least a portion of a superabsorbent polymer. 2 Powder-like carrier (B) containing at least a portion of tea leaf extract or fraction (A) 0.01 to 30% by weight and a superabsorbent polymer
The powdery deodorant according to claim 1, comprising 99.99 to 70% by weight. 3. The powdery deodorant according to claim 2, wherein the proportion of the super absorbent polymer in 100 parts by weight of the powdery carrier (B) is 0.1 to 30 parts by weight.