JP2010094406A - Deodorizing composition and method of manufacturing the same - Google Patents

Abstract

The present invention provides a deodorant composition in which a deodorant component is dispersed in water in a stable state, does not precipitate in stock, and does not whiten after being processed into a fabric. With the goal.
A deodorant component having an average particle size of 10 nm to 100 μm is charged in a wet pulverizer in a state where the deodorant component is dispersed in water and finely pulverized to an average particle size of 300 nm or less. The present inventors have found that a deodorant composition having good liquid stability that does not precipitate at the bottom of the product can be obtained, and the present invention has been achieved.
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Description

  The present invention is a deodorant composition capable of efficiently adsorbing and removing malodors such as formaldehyde, ammonia, and acetic acid in the air in a room. The present invention relates to a deodorizing composition capable of maintaining an excellent deodorizing effect and a soft texture without whitening, and a method for producing the same.

  Conventionally, in order to impart functionalities such as flame retardancy, deodorant properties, antifouling properties, insect repellent properties, and antibacterial properties to fiber fabrics, flame retardants, deodorants, and antifouling agents are added to the fibers of fiber fabrics. Techniques for applying various functional agents such as insect repellents and antibacterial agents are provided.

In Japanese Patent Application Laid-Open No. 2004-26883, the applicant describes a deodorizing composition comprising an inorganic silicon compound carrying a polyamine compound, at least one compound selected from metal oxides, and a porous inorganic substance via a binder resin. A deodorant fabric fixed to the fiber is disclosed.
Japanese Patent Application No. 2007-096543

  However, when the deodorant composition of Patent Document 1 is processed into a fabric, the deodorant components aggregate and settle on the bottom of the container, or when applied to the fabric and dried, the color of the fabric appears white and cloudy. In particular, a dark-colored fabric such as black has a phenomenon of appearing white (whitening), and a countermeasure has been desired.

  The present invention has been made in view of such a technical background, and the deodorant component is stably dispersed in water, does not settle in stock, and is whitened after being processed into a fabric. An object of the present invention is to provide a deodorant composition having no odor.

  As a result of intensive studies to solve such problems, the present inventors put a deodorizing component having an average particle size of 10 nm to 100 μm in water and put it in a wet pulverizer to obtain an average particle size. By pulverizing the diameter to 300 nm or less, it was found that a deodorant composition having good liquid stability without deodorant components being precipitated at the bottom of the container was obtained, and the present invention was reached. In order to achieve the above object, the present invention provides the following means.

  [1] A method for producing a deodorant composition comprising a porous inorganic substance having an average particle size of 10 nm to 100 μm, a metal oxide, and an inorganic silicon compound carrying a polyamine compound, wherein A deodorizing composition characterized by mixing an odor component, a dispersant, and water, putting the mixture into a wet pulverizer, and finely pulverizing the three components to have an average particle size of 300 nm or less. Manufacturing method.

  [2] The method for producing a deodorant composition according to item 1 above, which contains 0.1 to 5 parts by weight of an anionic dispersant with respect to 100 parts by weight of the deodorant composition.

  [3] A deodorant composition prepared by the production method according to 1 or 2 above.

  According to the invention of [1], a porous inorganic substance having an average particle size of 10 nm to 100 μm, a metal oxide, a deodorizing component of an inorganic silicon compound carrying a polyamine compound, a dispersant, and water are mixed, The mixture is put into a wet pulverizer and further finely pulverized so that the average particle size of the three deodorant components is 300 nm or less, so that the deodorant components once agglomerated once mixed are further finely pulverized. In other words, since it is finely pulverized until the average particle size of the deodorant component is 300 nm or less, it can be a method for producing a deodorant composition that is difficult to reagglomerate.

  According to the invention [2], since 0.1 to 5 parts by weight of an anionic dispersant is contained with respect to 100 parts by weight of the deodorant composition, re-aggregation is prevented even if there is a change in pH value, temperature, etc. Thus, a method for producing a deodorant composition having excellent dispersibility can be obtained.

  According to the invention of [3], since it is prepared by the production method described in the preceding item 1 or 2, it is possible to prevent the deodorant component from being settled on the bottom of the container during processing, and to eliminate the liquid stability. An odor composition can be obtained.

  The deodorant composition of the present invention includes an inorganic silicon compound carrying a porous inorganic substance, a metal oxide, and a polyamine compound having an average particle size of 10 nm to 100 μm. If these deodorizing components are applied to, for example, a fabric, the bad odor of basic gases such as ammonia and trimethylamine in the air in the room, sulfur gases such as hydrogen sulfide and mercaptans, and acidic gases such as acetic acid can be efficiently obtained. While being able to adsorb and remove, it can be set as the cloth which removes the bad smell of neutral gas, such as acetaldehyde, efficiently and effectively. However, when time elapses after mixing, the deodorant component aggregates, the average particle size increases, settles in the processing liquid, or clogs the spray nozzle, solving the problem of deodorant component aggregation It was an issue that had to be done.

  The present invention provides a deodorant composition that hardly re-aggregates by dispersing the deodorant component in water or the like and then further pulverizing it into a wet pulverizer until the average particle size becomes 300 nm or less. In addition, by using a specific dispersant, the deodorant composition is more stable and excellent in dispersibility.

  The porous inorganic substance having an average particle size of 10 nm to 100 μm constituting the deodorant composition of the present invention has a large surface area due to the porous property and has an excellent malodor adsorption ability. Examples of such porous inorganic substances include activated carbon, zeolite, barley stone, and silica gel. Among them, it is preferable to use zeolite having an excellent adsorbing ability for acetic acid, ammonia gas, and the like, and the zeolite is white when processed into a cloth or the like, and becomes black and dirty like activated carbon. This is preferable. Zeolite has a skeletal structure in which silicon and aluminum are three-dimensionally bonded through oxygen, and molecular-level holes (pores) are opened in this skeleton, so that various molecules such as water and organic molecules are contained in the skeleton. Therefore, it is very useful as an adsorbent. There are various types of zeolite. Among them, the artificial zeolite MFI type zeolite is very effective as an adsorbent because the two kinds of pores derived from the crystal structure are three-dimensionally connected. Is recognized as. If MFI-type zeolite is used as an adsorbent, an excellent effect can be exhibited even in the adsorption of a small amount of neutral gas such as aldehydes and 1-nonene.

  Examples of the metal oxide having an average particle size of 10 nm to 100 μm constituting the deodorant composition of the present invention include metal oxides such as copper oxide, alumina, titanium oxide, zinc oxide, iron oxide, and zirconium oxide. However, it is not particularly limited to these examples. The metal oxide is effective for an acidic gas and can exhibit an excellent deodorizing effect for gases such as acetic acid and hydrogen sulfide.

  Moreover, as an inorganic silicon compound which carry | supported the polyamine compound with an average particle diameter of 10 nm-100 micrometers, what carried the polyamine compound in porous silicon dioxide, aluminum silicate, etc. is mentioned, for example. As the polyamine compound, any one of aliphatic amine, aromatic amine, and alicyclic amine can be used as long as it has one or more primary amino groups in the molecule. For example, diethylenetriamine, tetraethylenepentamine, etc. Can be mentioned. As a method for supporting a polyamine compound, for example, an aqueous solution of a polyamine compound is prepared, porous silicon dioxide is immersed in this aqueous solution, and this is heated and fired to obtain a silicon dioxide compound supporting the polyamine compound. . The polyamine compound is effective for deodorizing aldehyde gas, and can effectively deodorize various bad odors by using a porous material or a metal oxide in combination.

  The mixing ratio of the porous inorganic substance, the metal oxide, and the inorganic silicon compound supporting the polyamine compound is not particularly limited. However, if the compounding amount of the metal oxide such as titanium oxide increases, for example, the supported fiber fabric may be deteriorated. Become. Moreover, when the compounding quantity of porous substances, such as a zeolite, increases, it becomes a cause which whitens the supported fiber cloth etc., for example, and is unpreferable. The mixing ratio of the porous material, the metal oxide, and the inorganic silicon compound supporting the polyamine compound is preferably 5: 0.5: 4.5 to 6.5: 1.5: 2.

  In the present invention, a porous inorganic substance, a metal oxide, and an inorganic silicon compound carrying a polyamine compound are blended in a certain ratio and dispersed in water together with a dispersant to obtain an aqueous dispersion of a deodorant component. If left as it is, agglomeration may occur depending on certain conditions (pH value, temperature, etc.), the average particle size of the deodorant component will increase, and it will become a problem because it settles in the processing liquid or clogs the spray nozzle. However, in the present invention, an aqueous dispersion of deodorant components is put into a wet pulverizer and finely pulverized so that the average particle size of the three deodorant components is 300 nm or less, thereby reaggregating and whitening. It is intended to solve this problem. It is preferable to add 5 to 20 parts by weight of the deodorant component to 100 parts by weight of water and stir to obtain an aqueous dispersion of the deodorant component.

  As the wet pulverizer, a known one can be used, for example, a bead mill, a ball mill, etc., the aqueous dispersion of the deodorant component of the present invention is put into a wet pulverizer, and pulverized for a predetermined time to obtain a target particle size. An aqueous dispersion of deodorant components is obtained. Further, by setting the average particle size of the deodorant component to 300 nm or less, it is possible to prevent the light from being whitened when supported on a fiber cloth or the like by forming a transparent pulverized product with suppressed light reflection.

  Moreover, in order to measure the liquid stability of the aqueous dispersion of the deodorant component, it is preferable to contain 0.1 to 5 parts by weight of an anionic dispersant with respect to 100 parts by weight of the deodorant composition. In the case of a dispersant other than an anionic dispersant, aggregation may occur depending on conditions (pH value, temperature, etc.), which is not preferable. Further, when the addition amount of the anionic dispersant is less than 0.1 parts by weight, the effect is small, and even if the addition amount exceeds 5 parts by weight, the effect corresponding to the addition amount cannot be obtained.

  The deodorant composition thus obtained is blended with a binder resin solution to prepare a processing liquid, which is then applied to a fiber fabric and dried to obtain a deodorant fabric that does not whiten. . At this time, it is preferable to disperse these deodorizing components and the binder resin as much as possible, and it is more preferable that the binder resin forms an emulsion state with water. In addition, it is preferable to disperse the binder resin in advance after dispersing the deodorant composition in water before blending in order to more uniformly disperse the deodorant component and the binder resin.

  As the binder resin, any resin can be used. For example, self-crosslinking acrylic resin, methacrylic resin, urethane resin, silicone resin, glyoxal resin, vinyl acetate resin, vinylidene chloride resin, butadiene resin, melamine resin, epoxy resin, acrylic-silicone copolymer resin, ethylene- Examples thereof include vinyl acetate copolymer resin, isobutylene maleic anhydride copolymer resin, and ethylene-styrene-acrylate-methacrylate copolymer resin. Two or more of these resins may be mixed to form a binder resin.

  Further, when the amount of the binder resin increases when it is supported on a fiber fabric, the binder resin covers the surface of the porous material or metal oxide, and the deodorizing performance is reduced. The balance of the four components of the porous material, the metal oxide, the inorganic silicon compound carrying the polyamine compound, and the binder resin is important.

  In addition, the evaluation method of the cohesion test and the evaluation method of the whitening test in this invention are as follows.

<Cohesiveness test>

  After creating the working fluid, leave it for 30 minutes, if there is a precipitate at the bottom of the container, "X", if there is no precipitate "○", if left for 24 hours and no precipitate "◎" It was evaluated.

<Whitening test>
The fabric is visually compared with an unprocessed fabric, “×” indicates that the fabric is clearly white, “△” indicates that the fabric is slightly white, “○” indicates that the fabric is slightly discolored, Those that were not discolored at all were evaluated as “◎”.

<Example 1>
Next, as an example of the present invention, a flame retardant obtained by neutralizing and drying a black curtain fabric made of polyester (weight per unit: 435 g / m ² PH5) treated with guanidine phosphate with an aqueous sodium phosphate solution Curtain fabric (PH7) was prepared. Next, 0.5 parts by weight of zinc oxide having an average particle diameter of 10 nm, 3.0 parts by weight of MFI type zeolite having an average particle diameter of 5 μm, and 2.0 parts by weight of silicon dioxide having an average particle diameter of 10 μm carrying diethylenetriamine were added. In addition to parts by weight of water, 0.5 part by weight of an anionic dispersant (Aron T-50 manufactured by Toa Gosei Co., Ltd.) was added, followed by stirring with a stirrer to obtain a dispersion. Next, this dispersion was put into a bead mill and pulverized for 20 minutes, and it was confirmed that the average particle size became 250 nm. In the cohesiveness test of this deodorant composition, an evaluation of “◎” was obtained. Further, 10 parts by weight of an acrylic silicon binder resin (solid content 25%) was added to 100 parts by weight of the deodorant composition, and the mixture was thoroughly stirred to obtain a uniform processing liquid. Next, the flame retardant curtain fabric (PH7) was immersed in this treatment liquid, squeezed with a mangle, and then dried at 130 ° C. for 15 minutes to obtain a flame retardant curtain fabric. The amount of zinc oxide deposited on the curtain fabric is 0.5 g / m ² , the amount of MFI zeolite deposited on the curtain fabric is 3.0 g / m ² , and the amount of silicon dioxide loaded with diethylenetriamine on the curtain fabric is It was 2.0 g / m ² . The flame retardant deodorant curtain fabric thus obtained was evaluated for whitening and evaluated as “◯”.

<Example 2>
In Example 1, 3 parts by weight of an anionic dispersant was added and charged in a bead mill. Fine pulverization was performed over 1 hour, and it was confirmed that the average particle size was 120 nm. A composition was obtained. In the cohesiveness test of this deodorant composition, an evaluation of “◎” was obtained. Moreover, in the evaluation of whitening, the evaluation was “」 ”.

<Comparative Example 1>
In Example 1, a deodorant composition was obtained in the same manner as in Example 1 except that the nonionic dispersant (SC-50 manufactured by Lion Corporation) was used in an amount of 2 parts by weight instead of the anionic dispersant. As a result, precipitates were observed after being left for 30 minutes, and the evaluation was “x”. In the whitening test, the evaluation was “x”.

<Comparative example 2>
In Example 1, a deodorant composition was obtained in the same manner as in Example 1 except that it was not put into a bead mill, and a cohesiveness test was performed. Precipitates were observed after standing for a period of time, and the evaluation was “◯”. In the whitening test, the evaluation was “Δ”.

<Comparative Example 3>
In Example 1, a deodorant composition was obtained in the same manner as in Example 1 except that it was finely pulverized for 20 minutes without adding an anionic dispersant, and a coagulation test was conducted. As a result, the evaluation was “x”. In the whitening test, the evaluation was “x”.

<Comparative example 4>
In Example 1, 0.05 part by weight of an anionic dispersant (Aron T-50 manufactured by Toa Gosei Co., Ltd.) was added, and then the deodorant composition was prepared in the same manner as in Example 1 except that stirring was performed with a stirrer. As a result, a cohesiveness test was carried out. As a result, a precipitate was observed after standing for 30 minutes, and the evaluation was “x”. In the whitening test, the evaluation was “Δ”.

<Comparative Example 5>
In Example 1, the deodorant composition was obtained in the same manner as in Example 1 except that the average particle size was confirmed to be 0.5 μm by pulverizing for 10 minutes. Although there was no precipitate after standing for 30 minutes, a precipitate was seen after standing for 24 hours, and the evaluation was “◯”. In the whitening test, the evaluation was “Δ”.

Claims (3)

  A method for producing a deodorant composition comprising a porous inorganic substance having an average particle size of 10 nm to 100 μm, a metal oxide, and an inorganic silicon compound carrying a polyamine compound, wherein Dispersant and water are mixed, and the mixture is put into a wet pulverizer and finely pulverized so that the average particle size of the three deodorant components is 300 nm or less. Method.   The method for producing a deodorant composition according to claim 1, comprising 0.1 to 5 parts by weight of an anionic dispersant with respect to 100 parts by weight of the deodorant composition.   The deodorant composition created with the manufacturing method of the said Claim 1 or 2.