JP6525927B2 - Urine treatment material for pets - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a pet waste treating material made of smectite clay, and more particularly to a pet waste treating material having high deodorizing properties and excellent solidifying property.

  There are various things as a urine disposal material for pets used for a pet toilet from before. The shape includes pellet shape, sheet shape and the like, and there are various types of materials such as clay, sawdust, paper and the like.

  As one of such pet wastes, those made from smectite clay such as bentonite particles are known. An action of the bentonite-based material for treating urine of pets for pet is such that the muddy regions of the individual bentonite granular material layers which are rapidly swollen by urine absorption mutually push together and solidify as a lump. It is possible to absorb and solidify urine by a mechanism and remove only used parts easily.

  It is known that a copper compound or a zinc compound can be attached to the surface of particulate urination treating material such as cat sand to impart the performance of deodorizing ammonia or ethyl mercaptan, and the method according to the present applicant's etc. Patent Document 1 (Japanese Patent Laid-Open No. 2000-302435) also discloses improvement of the deodorizing performance of a smectite carrying a metal compound obtained by spraying an aqueous solution of copper sulfate or zinc sulfate onto active bentonite with respect to ammonia and ethyl mercaptan. ing. Further, in Patent Document 2 (Japanese Patent Application Laid-Open No. 2013-000036), a solid having a certain degree or more produced by selecting and using an smectite-based clay having a large amount of solid acid originally expressed by a replaceable hydrogen index Granules of activated bentonite having a residual acid content are also disclosed to have high deodorizing ability to ammonia and ethyl mercaptan.

JP 2000-302435 A JP, 2013-000036, A

  However, these conventional techniques have not been sufficient in terms of deodorizing ability.

  The present invention was made focusing on the above-mentioned problems, and the object of the present invention is to eliminate urine for pets, which is excellent in deodorizing ability and has swelling and solidifying properties equal to or higher than those of conventional products. It is to provide a treatment material.

  Other objects and effects of the present invention will be easily understood by those skilled in the art with reference to the following description.

  The urine treating material for pets according to the present invention is mainly composed of smectite clay and is an exchangeable alkali component of 0.3 to 1.5 equivalents (in the present invention, equivalent to chemical equivalent, unit: eq) per 1 kg of the smectite clay. And an smectite clay as a main raw material, and containing 0.3 to 1.5 equivalents (eq) of exchangeable alkali component per 1 kg of the smectite clay, and the deodorizing additive on the outer surface The second bentonite particles, and the two types of bentonite particles, based on 100 parts by weight of the whole particles, the first bentonite particles: second bentonite particles = 0 The deodorizing additive is contained in a weight ratio of -95 (parts by weight): 100 to 5 (parts by weight), and the deodorizing additive contains a copper compound and / or a zinc compound, and further contains an acidic compound.

  Here, the compounding ratio of the first bentonite particles to the second bentonite particles is the case where the second bentonite particles are used alone, the first bentonite particles and the second bentonite particles. In any case of mixing in the desired range, it means that the object of the present application is satisfied.

  According to such a configuration, copper compounds and zinc compounds contribute to deodorizing, and therefore they are excellent in deodorizing ability to various malodorous components, especially ethyl mercaptan and the like which are classified as acidic odor as malodorous gas generated from pet manure Sulfurous malodorous gases, nitrogenous malodorous gases such as ammonia classified as basic malodor, and 3-MMB (3-methyl), which is a kind of pheromone-like substance contained more in urine of adult cats, especially male cats. It is possible to provide an excellent pet drainage treatment material for pets, which exhibits an excellent effect of deodorizing ability to the specific odor of mercaptobutanol, and additionally has the same degree of swelling and solidifying properties as conventional products.

  In a preferred embodiment of the present invention, the exchangeable alkali component may be 0.4 to 1.2 equivalents (eq) of the exchangeable sodium component.

  According to such a configuration, by using, among the exchangeable alkali components, the sodium component which contributes to the swelling property and the solidifying property, it is possible to obtain the urine treating material for pets which is more excellent in the swelling property and the solidifying property.

  In a preferred embodiment of the present invention, the deodorizing additive may further contain a silver compound.

  According to such a configuration, the silver compound contributes to the deodorization in the same manner as the copper compound and the zinc compound, so that the deodorizing ability of the pet's urine treating material is further improved. In addition to this, since the silver compound is particularly excellent in the effect of suppressing the activity of a urine component-degrading enzyme such as urease, the generation of ammonia due to urea decomposition is suppressed, and the generated odor is not deodorized, but an odor In other words, it is a pet urine disposal material excellent in deodorizing ability so as to suppress the occurrence of itself.

  In a preferred embodiment of the present invention, the suspension pH of the first bentonite particles in 1% saline may be 9.2 or more.

  Here, "suspension pH" means the value of pH of the whole particulate matter. As an example of a specific measurement method, the granular material to be measured is added to a 1% saline solution at a concentration of 5% by weight, stirred for 10 minutes, and allowed to stand for a further 30 minutes. Measure the pH of the solution. That is, that the suspension pH is 9.2 or more means that the pH measured according to the above-mentioned measuring method is 9.2 or more.

  And according to such a configuration, it is ensured that the first bentonite particles are closer to alkali because of the height of the suspension pH, whereby high swelling property and solidification property can be obtained.

  In a preferred embodiment of the present invention, the suspension pH of the second bentonite particles in 1% saline may be 9.0 or more.

  According to such a configuration, it is ensured that the second bentonite particulates not only have high deodorizing ability but also have sufficient swelling and solidifying properties, so that the swelling as the whole pet drainage treatment material for pets is ensured. It is easy to increase the mixing ratio of the second bentonite particulate matter by increasing the properties and solidifying properties.

  In a preferred embodiment of the present invention, the pH of the surface of the second bentonite particles measured on the pH test paper is 3.6 or less, and the pH measured on the inside of the second bentonite particles of the pH test paper is It may be 9.0 or more.

  Here, as a method of measuring the pH of the surface of the particulate matter, the following method may be mentioned as an example. Grab a part of the surface of the granular material with tweezers, soak it in pure water and immediately pull it up, and then immediately press the wet surface against the pH test paper and visually observe the color of the discolored part within about 5 seconds The pH is measured by observing with and comparing to a standard color change table.

  Moreover, as a method of measuring the pH inside the particulate matter, the following method may be mentioned as an example. The granular material is broken with a finger or the like to expose the inside, and a part of the granular material is removed by tweezers, dipped in pure water and instantaneously drawn up, and the wet surface is lightened with pH paper immediately after that The pH is measured by visually observing the color tone of the part that has discolored within about 5 seconds of pressing and comparing with the standard color change table.

  The granular surface of the second bentonite granular material having such a constitution has high deodorizing ability because the pH is biased to the acidity and the metal compound is attached, and the swelling property and the solidifying property As it is inferior, it does not prevent the permeation of water into the inside of the particulate matter. On the other hand, the inside of the second bentonite particles has a high swelling property and solidifying property by the pH being biased to alkaline, and has an action of capturing the infiltrated water and coagulating and solidifying. That is, when water comes in contact with the surface of the granular material, the water penetrates into the granular material and is absorbed immediately, and in addition to the high deodorizing ability, it is also excellent in swelling property and solidification property, and further for pets It becomes a urine processing material.

  In a preferred embodiment of the present invention, the pH of the surface of the second bentonite particles measured on pH paper is 1.0 to 3.4, and the pH paper inside the second bentonite particles is measured The pH measured by may be 9.2 to 10.2.

  According to such a configuration, it is possible to obtain a pet waste treating material having higher deodorizing ability, swelling property, solidification property, and water absorption speed.

  In a preferred embodiment of the present invention, the alkaline compound may be an alkaline sodium compound consisting of one or a combination of two or more selected from the group of sodium carbonate, sodium silicate or sodium hydroxide.

  According to such a configuration, it is possible to obtain a pet waste treating material for pets which is more excellent in swelling property and solidification property.

  In a preferred embodiment of the present invention, the addition amount of each additive contained in the deodorant additive per 1 kg of the second bentonite particles is 2 to 100 milliequivalents in total of a copper compound and / or a zinc compound. The acid compound (meq) may be 1 to 50 milliequivalents (meq), and the silver compound may be 0.01 to 1 milliequivalent (meq).

  According to such a configuration, since the compounding amount of the copper compound and the zinc compound is in an appropriate range, a sufficient deodorizing ability is exhibited. Moreover, the pH adjustment effect | action by an acidic compound is fully acquired by the compounding quantity of an acidic compound being an appropriate range. Furthermore, sufficient suppression of urease activity is contributed by the silver compound.

  In a preferred embodiment of the present invention, the copper compound may be copper sulfate, the zinc compound may be zinc sulfate, and the acidic compound may be aluminum sulfate.

  According to such a configuration, the deodorant additive portion is more excellent in deodorizing ability and antibacterial property, and has excellent pH adjusting ability.

  In a preferred embodiment of the present invention, the silver compound may be silver nitrate.

  According to such a configuration, in addition to the antibacterial property and the urease suppressing function being obtained, it is preferable in terms of safety and workability.

  In a preferred embodiment of the present invention, the second bentonite granular material has a minor axis in the minimum direction of 1 to 5 mm and an aspect ratio (major axis / minor axis) of 1 to 10, The thickness of the adhesion layer of the additive may be one sixth or less of the minor axis.

  Here, the “adhesion layer” does not mean only the metal compound or the like attached to the surface of the particulate matter, but also means a portion where the deodorant additive aqueous solution penetrates, and more specifically, the deodorant additive A portion in which the pH becomes approximately the same value as that of the surface of the granular material as a result of the penetration of the aqueous solution is regarded as an “adhered layer”. The boundary line between the adhered layer portion and the non-adhered layer portion is a ring-shaped boundary line by containing a small amount of water in the exposed section by cutting or breaking the particulate matter and pressing the pH test paper against the section. Is observed.

  And according to such a configuration, if the thickness of the deodorant additive-adhered layer is 1⁄6 or less of the minor axis, while sufficient deodorizing ability by the deodorant additive is obtained, inside the granular material Since the bentonite particles exhibiting alkalinity remain sufficiently, it becomes easy to achieve both deodorizing ability, swelling property and solidification property.

  In a preferred embodiment of the present invention, in addition to the first bentonite particles and the second bentonite particles, a smectite clay as a main raw material and a suspension pH in 1% saline solution is 6 or less The acid clay particles may be further contained, and the content of the acid clay particles may be 1 to 5 parts by weight with respect to 100 parts by weight in total of the two types of bentonite particles.

  According to such a configuration, since the acidic clay particles contain a large amount of solid acid, the basic odor gas of urine ammonia and amines is neutralized and chemically adsorbed. On the other hand, it is possible to obtain a pet waste treating material for pets having high deodorizing ability.

  In a preferred embodiment of the present invention, the smectite clay which is the main raw material of the acidic clay granules is a natural acid clay or an activated clay which is an acid-treated product thereof, and the acidic clay granules are inorganic acids and / or Alternatively, it may contain an acidic compound consisting of an inorganic acid salt.

  According to such a configuration, the acid clay and the activated clay contain inorganic acid salts, and since they have a high surface acidity, they function as strong solid acid adsorbents, and the deodorizing effect is further improved. Is obtained.

In a preferred embodiment of the present invention, the solidified urine absorbing ability C _US (ml / 100 g) represented by the following formula (1) may be 50 or more.
C _US = [M _C / (M _A −M _P )] × 10 ² ·············· Formula (1)

(Wherein M _A is the volume of M _C (ml) and the weight is M _P (g). The weight of the solidified lump of the urine treating material for pets absorbed in g (g))

Here, the solidified urine absorption capacity C _US indicates how much water the predetermined amount of the pet waste treatment material for pets absorbs, and the value of C _US = 50 is 5 ml for 10 g of the pet waste treatment material for pets It means that it can absorb urinary fluid. And according to such a structure, it can be set as the pet urine treating material which has sufficient water absorbency.

  Moreover, this invention can be grasped also as a manufacturing method of the urine disposal material for pets.

In the method for producing a urine treating material for pets according to the present invention, an alkaline compound of 0.3 to 0.9 equivalents (eq) is added to 1 kg of the smectite clay of 150 ° C. on a dry basis with respect to the smectite clay. Mixing and kneading, the kneaded material is put into a granulator, granulated, and then dried to produce a first bentonite granular material, a copper compound and / or a zinc compound, and an acidic compound Preparing a deodorant additive aqueous solution having a pH of 4 or less, and spraying the deodorant additive aqueous solution onto the surface of the first bentonite granular material to produce a second bentonite granular material; Mixing the first bentonite granules and the second bentonite granules at a weight ratio of 0 to 95 parts by weight: 100 to 5 parts by weight, and optionally 0 to 5 of the acidic clay granules Weight ratio by weight Characterized in that it has a focus to process.

  Here, the weight of “150 ° C. dry basis” is intended to be the absolute dry weight when the smectite clay is dehydrated by heating to 150 ° C., not only to the adhering water but also to the interlayer water, and simple It does not mean to use the clay in a dry state at 150 ° C.

  And according to such a configuration, it is possible to easily manufacture the pet's urine treating material having a high deodorizing ability and having the same swelling property and solidifying property as conventional products.

  The deodorizing additive may further contain a silver compound.

  According to such a configuration, in addition to the above-described effects, it is possible to manufacture a pet voiding treatment material excellent in the effect of suppressing the activity of a urine component degrading enzyme such as urease.

  In a preferred embodiment of the present invention, an acidic compound is added to and kneaded with a smectite clay so that the pH measured at a concentration of 5% by weight using a 1% saline solution becomes 6 or less. The method further includes the step of producing the acidic clay particles by charging into a granulator and granulating and then drying, and the total amount 100 weight of the first bentonite particles and the second bentonite particles The acidic clay particles may be blended in a weight ratio of 1 to 5 parts by weight based on part.

  According to such a configuration, it is possible to manufacture a pet waste treating material for pets having a high deodorizing ability with respect to the basic malodorous gas of ammonia or amines derived from urine.

  Moreover, this invention can be grasped also as invention regarding the deodorizing additive for the urine disposal material for pets.

  The deodorizing additive for the urine treating material for pets according to the present invention comprises a copper compound and / or a zinc compound and an acidic compound, which are copper compound and / or zinc compound in a chemical equivalent ratio: acidic compound = [100 ]: It is characterized by being contained in the ratio of [5-500].

  According to such a configuration, it is possible to obtain a deodorant additive for a pet urine disposal material that imparts high deodorizing ability to a bentonite pet urine disposal material.

  In a preferred embodiment of the present invention, a silver compound may be further contained in a ratio of a copper compound and / or a zinc compound: silver compound = [100]: [0.01 to 2] in a chemical equivalent ratio.

  According to such a configuration, it is possible to provide a deodorant additive for pet voiding treatment material excellent in the effect of suppressing the activity of a urine component degrading enzyme such as urease in addition to the above-mentioned effects.

  As described above, the urine treating material for pets according to the present invention is a sulfur-based malodorous gas such as ethyl mercaptan which is classified as an acidic odor as an odorous gas generated from pet manure, ammonia which is classified as a basic odor In addition to exerting excellent effects on the deodorizing ability against the specific odor of nitrogenous malodorous gas of 3 and 3-MMB, which is a kind of pheromone-like substance contained more in urine of adult cats, especially male cats, It has the same degree of swelling and solidifying properties as the product.

  Furthermore, by adding a silver compound to the deodorizing additive, the activity of a urinary component degrading enzyme such as urease is suppressed to suppress the generation of ammonia due to urea decomposition, so the generated odor is not deodorized, It is possible to obtain a pet waste treating material having excellent deodorizing ability, so to say, to suppress the occurrence of odor itself.

It is a chart (the 1) showing mixture of a raw material in each example. It is a chart (the 2) showing mixture of a raw material in each example. It is a graph (the 3) which shows the combination of the raw material in each Example. It is a chart showing composition of materials in each comparative example. It is a graph (the 1) which shows the physical property of the urine disposal material for pets obtained by the Example and the comparative example. It is a graph (the 2) which shows the physical property of the urine disposal material for pets obtained by the Example and the comparative example. It is a graph which shows the sensory test result of the urine disposal material for pets obtained by the Example and the comparative example. It is a chart showing an evaluation standard of a sensory test.

  BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, a preferred embodiment of the urine treating material for pets according to the present invention will be described in detail with reference to the attached drawings.

  The material for treating urine on pets according to the present invention comprises smectite, a first bentonite particle comprising smectite clay as a main raw material and containing 0.3 to 1.8 equivalents (eq) of an alkali compound per 1 kg of the smectite clay. And a second bentonite particulate containing an alkaline clay as the main raw material, 0.3 to 1.8 equivalents (eq) of an alkali compound per 1 kg of the smectite clay, and having an uneven distribution of a deodorant additive on the outer surface. The first bentonite particles: second bentonite particles = 0 to 95 (parts by weight): 100 to 5 parts by weight, based on 100 parts by weight of the whole particles And the deodorizing additive includes a copper compound and / or a zinc compound, and further includes an acidic compound.

  In the present invention, as the smectite clay which is the main raw material of the first bentonite particles and the second bentonite particles, the so-called acid clay, subbentonite, dioctahedral smectite such as bentonite, which is naturally produced, is mainly contained. These clays can be selected appropriately and used.

  In these raw material clays, the amount of ion-exchangeable sodium component adhering to the inside and the outside of the layer of smectite differs depending on the type, and in general, the pH, the Na in the order of acid clay, subbentonite and bentonite Both component amounts are high. Specifically, while the pH is 5 and the amount of Na component is about 0 milliequivalent / 100 g in acid clay, the pH is 8 to 10 and the amount of Na component is 1 to 10 in sub-bentonite to bentonite. It becomes milli equivalent / 100 g. Therefore, about addition of the alkali compound mentioned later, it is preferable to set it as the amount of alkalis suitable for every raw material clay.

  In the present invention, an alkali compound is added to the first bentonite particles and the second bentonite particles described later. As the alkali compound used for the activation treatment, known compounds such as carbonates, silicates and hydroxides can be appropriately selected and used, but sufficient swelling property improvement effect can be obtained and the reason for being inexpensive Sodium carbonate, sodium silicate and sodium hydroxide are preferred.

  The reason why the alkali compound is added is to perform so-called activation treatment, and by adding an alkali agent to the smectite clay and kneading it, cations of the alkali compound are introduced between the smectite layers of the smectite clay, and the smectite clay is Swelling property and solidification property are improved.

  More specifically, the purpose of adding the alkali compound is to satisfy the optimum content of the exchangeable alkali such as sodium which is necessary for the active bentonization of the raw material clay. According to the knowledge of the inventors, when the amount of the alkali compound to achieve the purpose is added to the raw material clay, as a result, the pH becomes 9.2 or more. For this reason, by setting pH of 9.2 or more as a standard, it is possible to satisfy the necessary amount of exchangeable sodium, and as a result, it is possible to obtain a pet drainage treatment material having high swelling and solidification property.

  In the present invention, the content of the exchangeable alkali component in the first bentonite particles and the second bentonite particles is 0.3 to 1.5 chemical equivalents (eq) per 1 kg of smectite clay, and the alkali is used. When the main component of the compound is a sodium compound, it is more preferable if it is 0.4 to 1.2 chemical equivalents (eq). Here, although the preferable addition amount of the alkali compound depends on the solid acid amount of the raw material clay and the kind and amount of the interlayer ion, the average pH is 9.2 so that sufficient swelling property is exhibited to the urine. It is preferable to add it so that it may become the above, and if it adds so that it may become pH 9.5 or more, it is more preferable.

  The smectite clay used as the raw material, in addition to intercalated (reactive) alkali in the natural state, is a feldspar of albite (sodium aluminosilicate) or orthoclase (potassium aluminosilicate). It also contains a non-exchangeable (non-reactive) alkali derived from, and its content was up to near 0.9 eq / 1 kg, as far as the inventors have analyzed so far. Therefore, there is no rationality in specifying the preferable alkali content by the total alkali amount combining the exchangeability and the non-exchangeability, and it is added for the exchangeable alkali amount originally contained in the raw material and the active bentonization. There is rationality in the specific one by the content of the exchangeable alkali component measured as the total amount of exchangeable alkali amount. More specifically, the preferable addition amount of an alkali compound such as sodium carbonate is 0.3 to 1.5 equivalents of the total of the amount of exchangeable alkali originally contained in the raw material clay and the amount of exchangeable sodium added ( Adjustment should be made to be eq).

(Quantification of exchangeable alkali components)
The amount of exchangeable alkali component (eq / kg) can be determined, for example, as follows, in part, in accordance with "Japan Soil and Fertilizer Association supervision: Soil standard analysis and measurement method". About 5 g of a granular product sample is ground in a mortar and passed through a 100 mesh sieve to form a powder sample (≦ 150 μm), 2 g of the powder sample is collected in a 50 ml centrifuge tube with a polyethylene lid and 25 ml of 1 M ammonium acetate In addition it penetrates for 1 hour. The sample is then deposited by centrifugation. Each concentration of the alkali component (Na, K, Li) in the supernatant liquid is quantified by emission spectroscopy (ICP) etc., and the content of exchangeable alkali component per 1 kg of sample (150 ° C. dry basis) (eq / 1 kg) Calculate
As described above, the first bentonite particles are obtained by kneading a smectite clay with a predetermined amount of an alkali compound and kneading, and mainly contributes to the swelling property and the solidifying property. According to the findings of the inventors of the present invention, when the suspension pH of bentonite particles in 1% saline solution increases, the swelling property and solidification property improve, so that the first bentonite particles in 1% saline solution When the suspension pH is 9.2 or more, the particulate matter can exhibit sufficient swelling and solidifying properties for urine absorbing and solidifying.

  Here, "suspension pH in 1% saline solution" means the pH of the suspension when the whole of the particulate matter is dispersed in 1% saline solution, and can be determined by the following measurement method. The particulate matter to be measured is added to a 1% saline solution at a concentration of 5% by weight, stirred for 10 minutes, and allowed to stand for a further 30 minutes, and then the pH of a portion of 1 to 2 cm from the liquid surface of the 1% saline solution is measured. Do. In the present invention, since the first bentonite particles have a substantially uniform structure throughout, it is considered that the pH of the outer surface of the particles and the pH inside the particles are substantially the same.

  Next, the second bentonite particles will be described. In the present invention, the second bentonite particles are produced by adding a predetermined amount of an alkali compound to a smectite clay to produce particles, and spraying a deodorizing additive on the outer surface of the particles. The particulate matter before spraying the deodorizing additive may be separated from the first bentonite particulate matter or may be prepared separately. In addition, after the deodorizing additive is sprayed, it may be redried if necessary.

  In the present invention, the deodorizing additive used for the second bentonite particles contains a copper compound and / or a zinc compound, and further contains an acidic compound. Moreover, you may add a silver compound as needed. Examples of copper compounds that can be used here include inorganic salts such as copper sulfate, copper nitrate and copper chloride and other organic salts, and among these, they are excellent in safety, workability, low cost, and are generated from feces Deodorizing effect and antibacterial property by adsorption to sulfur based malodor such as ethyl mercaptan which is malodor (hereinafter referred to as EMP) and 3-methyl mercaptobutanol (hereinafter referred to as 3-MMB) which is malodor generated from urine Inorganic salts are preferred from the viewpoint of the ammonia generation suppressing ability and the like by the anti-urease function, and copper sulfate is particularly preferred. Further, as the zinc compound, inorganic salts such as zinc sulfate, zinc nitrate, zinc chloride and the like and other organic salts can be mentioned, and among these, zinc chloride and zinc sulfate are preferable for the same reason as described above.

By making ionized cupric (Cu ²⁺ ), zinc (Zn ²⁺ ), and silver (Ag ⁺ ) on the surface of bentonite granules, these metal ions exert an antibacterial action against urease active bacteria and urease. An anti-enzyme action on itself works to suppress or inactivate urease activity, and generation of ammonia due to hydrolysis of urea is suppressed or prevented, and as a result, a deodorizing state is realized which prevents generation of malodor itself.

In addition, Cu ²⁺ and Zn ²⁺ ions of copper salts and zinc salts are ammonia (due to strong coordination bonds generated by accepting electrons from nitrogen atoms (N) and sulfur atoms (S) in the empty d orbital. NH ₃ ) can form an ammine complex, and EMP and 3-MMB can also be strongly chemisorbed, and in particular, 3-MMB can also form a chelate complex of 6-membered ring. As a result, since these malodorous substances are strongly fixed on the surface of the second bentonite particles in which Cu ²⁺ and Zn ²⁺ ions are present and do not volatilize, a deodorizing state is realized.

  Furthermore, the fact that the pH of the surface layer of the second bentonite particles is on the acid side due to the deodorizing additive makes it possible to adsorb more basic malodorous gas such as ammonia and amines, which also leads to a higher deodorizing power. Contributing to the

  The second bentonite granular material of the present invention is a combination of the deodorizing state and the deodorizing state described above to realize high deodorizing performance. A high deodorizing performance can be expected by blending the second bentonite particles with, for example, the first bentonite particles in an amount of 5% by weight or more of the whole, and the amount of acid clay particles described later is also 5% by weight or less in the whole By blending in, it is possible to impart higher deodorizing performance.

  In the present invention, the acidic compound used for the deodorizing additive is added for the purpose of pH adjustment, and the addition amount is preferably in the range of 1 to 50 meq (meq) per kg of smectite clay. Moreover, as an acidic compound which can be used here, aluminum sulfate, aluminum chloride, a sulfuric acid etc. are mentioned, pH control in the deodorizing ability to ammonia and the deodorizing additive uneven distribution area (the said granular material outer surface) among these Aluminum sulfate is preferred in terms of performance. By adding an acidic compound to adjust the pH of the deodorant additive-adhered surface of the second bentonite particles to 3.6 or less, preferably in the range of 1.0 to 3.4, the second The copper compound and / or the zinc compound attached to the surface of the smectite particles work more effectively.

In the present invention, a silver compound may be added to the deodorizing additive in the range of 0.01 to 1 milliequivalent (meq) per kg of smectite clay. The silver compound that can be used here is preferably a water-soluble one, and examples thereof include silver nitrate, silver acetate, silver perchlorate and the like, and among these, ammonia generation suppressing ability by antibacterial property and anti-urease function Silver nitrate is preferred from the viewpoint of safety and workability as well as the impartability of As an example of a specific amount, a range of 1.7~170mg is preferred for silver nitrate (AgNO ₃ = 169.9) a long Invite smectite clay 1 kg. By adding a silver compound to the deodorizing additive, it contributes to deodorization in the same manner as the copper compound and zinc compound, and in particular, it is excellent in the effect of suppressing the activity of a urine component degrading enzyme such as urease. However, when the addition amount of the silver compound exceeds 1 milliequivalent with respect to 1 kg of smectite clay, the activity inhibitory effect of the urine component decomposing enzyme is increased, but on the other hand, the discoloration of the Ag component on the adhesion surface of the deodorant additive Darkening may occur and the commercial value may be impaired, and furthermore, since silver compounds are relatively expensive, addition of a large amount is not preferable from the viewpoint of increase in manufacturing cost.

  As described above, the second bentonite particles are mainly intended to contribute to the deodorizing ability, but by adjusting the pH, a sufficient function can be imparted to the swelling property and the solidifying property. Specifically, the second bentonite particles are sufficiently swellable and solidifiable at the time of urine absorption by adjusting the suspension pH of the second bentonite particles to be 9.0 or more. can do. When the suspension pH of the second bentonite particles is less than 9.0, it is not very preferable to blend a large amount of the second bentonite particles because the swelling and solidifying properties of the second bentonite particles are not sufficient. On the other hand, when the suspension pH of the second bentonite particles becomes 9.0 or more, the second bentonite particles having high deodorizing performance are improved because the swelling and solidifying properties of the second bentonite particles are improved. Even if the compounding ratio of (1) is increased, sufficient swelling property and solidification property can be obtained. Furthermore, if the second bentonite particles are prepared so that the suspension pH of the second bentonite particles is 9.2 or more, the second bentonite particles will have high swelling and solidifying properties, so the urination treatment for pets It is also possible to make most or all of the material the second bentonite particles. When the pH of the second bentonite particles is in the range of 9.0 to 9.2, the blending ratio is preferably about 5 to 10% by weight. In the present invention, the second bentonite particulate matter is acidic on the outer surface sprayed with the deodorant additive and alkaline in the absence of the deodorant additive at the stage before contacting with urine.

  In addition, the pH of the second layer bentonite particles is pH 1.0 to 3.6, the inside is alkalinity of 9.2 or more, and the suspension pH of the particles in 1% saline is 9 It is preferable that it is the above alkalinity. If the pH of the adhesion surface is lower than 1.0 even if it is acidic, the amount of bentonite particles in the high pH region inside is insufficient, or the surface of the urine is mixed with the inside after mixing. The pH can not maintain a high pH suitable for swelling, and there is a possibility that sufficient solidification can not be obtained. Here, examples of the method of adjusting the pH include the selection of the raw material clay, the selection of the type and addition amount of the alkali compound, the configuration of the deodorizing additive and the addition amount thereof, and the like.

  In the present invention, one of the reasons for adjusting the pH of each particulate matter is as follows. As described above, pH also affects the stability and activity of urease, and when pH is 6 to 8, urease is stable and activity is high, but when pH is 5 or less or 9 or more, stability is It is said that both the activity and the activity decrease, and further, when the pH is 4 or less or 10 or more, both the stability and the activity significantly decrease.

  Urine decomposition enzymes such as urease decompose urea in urine to generate ammonia, which is one of the malodorous components. According to the urine treating material for pets of the present invention, the odor of the generated ammonia is deodorized. In addition, it is possible to suppress the generation of ammonia itself.

  As in the second bentonite particles of the present invention, when the pH is 5 or less on the surface of the particles and 9 or more on the inside, urine containing a large amount of urea is present either in the surface layer or in the particles Also due to the above reason, the generation of ammonia is suppressed or prevented probably because the activity of the present urease is lost, and a high deodorizing state is realized. The surface and internal pH values are more preferably 4 or less for the surface pH and 10 or more for the internal pH.

In the present invention, the pH of the aqueous solution of deodorant additive varies depending on the concentration of the aqueous solution, but the pH of the aqueous solution of copper sulfate or zinc sulfate is about 5 or less, and the pH of the aqueous solution of silver nitrate is about 7 or less. Therefore, in order for these metal salts to be present stably in the ionized state as Cu ²⁺ , Zn ²⁺ , Ag ⁺ , the pH of the surface of the second bentonite particles to which the deodorant additive adheres Is preferably about 5 or less, particularly about 4 or less.

  In addition to the adjustment of pH, the deodorizing additive is distributed unevenly on the surface of the particulate matter in addition to the adjustment of pH, whereby the deodorizing ability can be more effectively obtained.

  In the present invention, the addition amount of the copper compound and the zinc compound contained in the deodorizing additive is preferably in the range of 2 to 100 milliequivalents (meq) in total per 1 kg of the second bentonite particles. Further, by setting the addition amount of the copper compound and the zinc compound contained in the deodorizing additive to 1 milliequivalent or more per 1 kg of the whole particulate matter, it contributes effectively to the improvement of the deodorizing property, which is preferable. Here, the total particles mean the total weight of the first bentonite particles, the second bentonite particles, and the acid clay particles.

  In the present invention, the pH of the aqueous solution of the deodorizing additive is such that copper ions, zinc ions, silver ions, etc. sufficiently exhibit ionicity in the state where the deodorizing additive is attached to the surface of the second bentonite particles. It is desirable that it is a pH range that can work effectively. Specifically, since various metal ions sufficiently exhibit the deodorizing ability if the pH is 3.6 or less, more preferably in the range of pH 1.0 to 3.4, the pH of the deodorant additive aqueous solution is 4 or less Is preferred. By setting the pH of the deodorant additive aqueous solution to 4 or less, it becomes easy to set the pH of the deodorant additive-adhered surface after the deodorant additive is attached to 3.6 or less.

  In the present invention, the thickness of the deodorizing additive-impregnated layer is preferably not more than one sixth of the minor diameter of the second bentonite granular material. By setting the thickness of the adhesion layer in this range, it is possible to ensure sufficient solidifying property while effectively maintaining the swelling property of the entire second bentonite particles. More specifically, since the adhesion layer portion containing the deodorizing additive exhibits acidity, the bentonite particles function to rapidly feed the urine fluid through the capillaries in the gaps between the particles, Swelling by itself is poor. On the other hand, bentonite particles in the inside exhibit high swelling property because alkalinity is maintained, and sufficient solidifying property is secured because alkalinity is maintained also in the muddy part partially mixed with the adhesion layer on the surface . That is, by setting the thickness of the deodorant additive-adhered layer to one-sixth or less of the minor axis, the range of the poorly swellable acidic portion is minimized while obtaining a high deodorizing effect by the deodorant additive , High swelling and solidifying properties are also maintained. Here, "muddy part" means a combination of the urine absorbing part of the particulate matter and the part containing moisture and becoming soft, and it is intended for all parts softened and muddy by the urine absorbing. There is.

  The thickness of the deodorizing additive-impregnated layer is determined by cutting the granular material in the minor axis direction using a cutter knife etc., immersing a small amount of water in the cross section, and wetting the pH test paper with an appropriate color change area immediately thereafter. By pressing on the cross section, it is possible to distinguish the boundary line between the attached layer portion that is acidic on the outer periphery and the non-attached layer portion that is alkaline on the outer side. In the present invention, the thickness of the adhesion layer can be adjusted by the concentration of the deodorizing additive aqueous solution. By increasing the concentration of the deodorant additive aqueous solution, the required spray amount of the deodorant additive aqueous solution decreases, and as a result, the thickness of the adhesion layer also decreases.

  On the other hand, when the thickness of the adhesion layer largely exceeds one-sixth of the minor axis, or the pH of the deodorant additive adhesion surface becomes lower than 1.0, the percentage of the part exhibiting alkalinity in the granular material The amount of bentonite particles in the high pH range inside is insufficient, or the surface and the inside become mixed after the urine absorption, probably because the pH as a whole of the particulate matter is too biased to the acidic side by reducing The pH of the part can not maintain a high pH suitable for swelling, and sufficient solidification may not be obtained.

  In the present invention, the spray amount of the deodorant additive aqueous solution varies depending on the concentration of each component in the deodorant additive aqueous solution, but the range of the spray amount of the deodorant additive aqueous solution to 1 kg of the second bentonite particles is 5 to 5 It is preferably 20 g and more preferably 10 to 15 g. It is difficult to attach the deodorant additive aqueous solution to the entire surface of the second bentonite particles if the amount of spray is 5 g or less, and conversely, if the amount of spray exceeds 20 g, the amount of spray is too large. The aqueous solution is absorbed deep into the granular material and the adhesion layer is thickened, so that the surface concentration of each component becomes thin and the deodorizing effect decreases, and the swelling bentonite phase inside the granular material decreases and the solidification property Is not preferable because there is a risk of Moreover, adjustment of the magnitude of the addition amount (meq / kg) of each component is made possible by making the spray amount constant and increasing or decreasing the content concentration of each component.

  In addition to the first bentonite particles and the second bentonite particles, the acidic clay particles may be blended in the pet urine treating material of the present invention. The acid clay particles contain a solid acid, and the solid acid neutralizes basic odorous gases such as urinary ammonia and amines and has strong deodorizing ability because it strongly adsorbs to chemicals. When the acidic clay particles are blended, it is preferable to blend so that the blending amount of the acidic clay particles is 5 parts by weight or less with respect to 100 parts by weight of all the particles. If the content of the acidic clay particles exceeds 5 parts by weight, the swelling and solidifying properties of the pet urine treating material as a whole may be reduced due to an increase in the proportion of the acidic clay particles having poor swelling and solidifying properties. is there.

  In the present invention, the suspension pH of the acidic clay particles in 1% saline is preferably 6 or less, and more preferably 5 or less. When the acidity of the acidic clay particles increases, the deodorizing ability of the acidic clay particles is further improved.

(Test paper for pH measurement)
In the present invention, cresol red (CR) test paper, thymol blue (TB) test paper, bromphenol blue (BPB) test paper or the like can be used to measure the pH of the deodorizing additive-adhered surface. Moreover, thymol blue (TB) test paper, alizarin yellow (AZY) test paper, etc. can be used for pH measurement inside each bentonite granular material, and measurement of suspension pH in 1% salt solution.

  In the conventional pet waste treatment material for pets, there is a method in which inorganic salts or oxides, which are normal salts or basic salts of copper or zinc, are attached by spraying onto granules as simple aqueous solutions or aqueous dispersions. It was used. On the other hand, in the urine treating material for pets according to the present invention, an aqueous solution obtained by adding an inorganic acid such as sulfuric acid or aluminum sulfate or an acidic inorganic acid salt to copper or zinc normal salt is used as a deodorant additive aqueous solution. 2. Spray on the surface of the bentonite particles of 2 and attach the deodorizing additive. As a result, the pH can be more stably maintained by the action of the inorganic acid, the acidic inorganic acid salt and the like as a pH buffer in a low pH range.

(Solidification performance)
The second bentonite particles and the pet urine treating material for pets of the present invention containing the same not only remarkably improve the deodorizing performance but also slightly improve or maintain the solidifying performance when urine is absorbed. It is.

In the present invention, the solidification performance is evaluated by the specific solidification length and the solidified urine absorption ability. The specific solidification length SL (mm / g) is the vertical direction of the solidified lump that occurs when 20 ml of test urine imitating cat urine is poured over 30 seconds from the top filled with the bentonite urination treatment material to be measured It evaluates the length and is expressed by the following equation (2).
SL = L _V / M _C ...... Formula (2)
(Wherein M _C is the weight (g) of the solidified mass absorbed 20 ml of the test urine, and L _V is the solidification length (mm) in the vertical direction (longitudinal direction))
The fact that the value of the specific solidification length is small means that the water in urine does not flow much downward due to the fact that the urine treating material in contact with urine absorbed urine immediately, and the momentary effect of the urine treating material was It is an index to judge the ability to absorb urine. In the urine treating material for pets according to the present invention, the specific solidification length is preferably 0.8 or less, which is superior to that of general cat sand.

On the other hand, solidified urine absorption capacity C _US indicates how much urine can be absorbed by a predetermined amount of urine treating material, and the larger the value of solidified urine absorption capacity, the larger the amount of absorbed urine. Means Note that when a urine _{M C (ml) (M P} (g)) Weight of solidified mass of absorbed pet urine disposal material and the M _A (g), solidification of the pet urine disposal material urine drainage The performance C _US is obtained by the following equation (1).
C _US = [M _C / (M _A −M _P )] × 10 ² ·············· Formula (1)
(Wherein M _A is the volume of M _C (ml) and the weight is M _P (g). The weight of the solidified lump of the urine treating material for pets absorbed in g (g))
For pet urine disposal material according to the present invention has been particularly aims to further improve the deodorizing performance is sufficient 50 or more for solidifying the urine absorbing ability C _US. Note that the value C _US = 50 means that 10 g of pet urine treating material can absorb 5 ml of urine.

  Generally, when the pH of the smectite clay is shifted to the acidic side, the deodorizing ability is improved, but the solidifying property and the swelling property are decreased. For this reason, the inventors of the present invention have initially found that the second bentonite particles of the present invention are sprayed with an acidic substance such as sulfate on the surface and the pH of the surface exhibits acidity so that the swelling property of the surface layer is lost. It is expected that the solidification length will be longer and the solidifying urine absorption ability will be smaller by lowering the speed and the water absorption amount, and if so, there is a concern that the compounding amount to the whole may be used only at a low compounding amount did. Steps such as spraying an acidic substance on the surface of an alkali-swellable bentonite-based voiding treatment substrate are generally considered to be avoided by those skilled in the art from the viewpoint of not impairing the solidifying property. It is.

  The inventors put more emphasis on the improvement of the deodorizing performance in the development of the urine treating material for pets according to the present invention, and thought that the decrease in the expected solidification performance would be suppressed by the adjustment of the blending amount. However, when the second bentonite granular material was produced on a trial basis, an unexpected result was obtained in which the solidification performance is maintained or improved if the addition amount of the acidic substance and the pH of the surface layer portion are appropriate. Therefore, in the present invention, if cost and productivity are neglected, it is possible to use only the second bentonite particles, and it is not necessary to set the upper limit of the second bentonite particles. A further advantage of the invention has now been found.

  In the first bentonite granular material, which is a conventional bentonite-based urination treatment material, alkaline swellable bentonite particles are filled while uniformly forming macropores in particle gaps from the surface layer to the inside of the particles. For this reason, in the stage of absorbing water, first, bentonite particles in the surface layer absorb water, swell and retain water (saturation), and are absorbed inside through macropores (capillaries) of particle gaps, and in that process A phenomenon in which bentonite particles inside further swell and retain water (saturation) one after another by water passing through the macropores occurs in a time of several seconds to several tens of seconds. The water absorption phenomenon of this one particulate matter occurs repeatedly in succession in the particulate matter of the lower layer of the bentonite-based urine treating material filling layer by the flow of water in the vertical direction, and as a result, each swollen particulate matter The muddy regions of the surface layer push against each other and solidify into a lump of spheroidal sphere or semi-spindle-like mass. At this time, in order to imagine the water absorption phenomenon in one granular material, first, water spreads over the whole surface layer part of the granular material, and the whole surface layer swells / hydrogelizes to become a jelly-like water blocking layer, It is considered that the water supplied from the outside is gradually absorbed while the water absorption rate to the inside of the granular material is suppressed, and the state of the final water absorption / swelling / water holding (saturation) is reached.

  On the other hand, in the second bentonite particles of the present invention, the pH of the surface layer of the particles is acidic, and therefore the alkali swelling inherent to bentonite does not occur at the surface layer of the particles. For this reason, the whole particulate matter is not enclosed in the jelly-like water blocking layer by swelling, water holding or hydrogelation, and the water supplied from the outside is immediately granulated through the macropores of the particle gap. The internal alkaline bentonite particles which are absorbed inside the product and water is supplied earlier than in the case of the first bentonite particles swell and retain water (saturated) one after another as in the case of the first bentonite particles. A phenomenon that water is absorbed while). As a result, a solidified mass is formed in a shorter time than the first bentonite particles, whereby the specific solidification length is smaller and the solidified urine absorption capacity is also increased, so that the swellable bentonite phase inside the particles is It is considered that despite the decrease, the solidifying performance equivalent to or better than or equal to that of the first conventional bentonite granular material is reached. Therefore, it can be said that the second bentonite particulate matter according to the present invention is sufficiently improved in its overall function as a urine treating material than the first bentonite particulate matter which is the conventional product.

[First bentonite particulate matter]
Smectite clay mined from the subbentonite clay deposit located in Shibata City, Niigata Prefecture was used as a raw material, and water was added as necessary to obtain a coarse crushed material with a water content of 33%. 10 kg of the crude material and alkali compound as sodium carbonate powder as Na ₂ CO _{3 in} 150 ° C. dry matter conversion 300 g (= 5.67 equivalents) in the same polyethylene bag and shaken well, and then a molded plate with a hole diameter of 10 mm Mix and blend three times on a single-shaft horizontal extrusion granulator with a. The crude granules are granulated using a desk pelleter (rotary roll type vertical extrusion granulator) with a molding plate with a hole diameter of 3 mm, dried at 170 ° C. with a rotary small drying furnace, The resultant was subjected to a sieving machine to obtain a first bentonite particle consisting of cylindrical granules having a minor axis of about 3 mm and a major axis of 4 to 7 mm.
The pH of the obtained first bentonite particles at a concentration of 5% by weight in 1% saline was 9.7.
[Second bentonite particulate matter]
1 kg of the first bentonite particles obtained in the present example is placed in a rotary cylindrical vessel, and copper sulfate (metal compound) separately prepared while appropriately rotating so that the entire particles uniformly flow and mix, 12. Deodorant additive aqueous solution (CuSO ₄ : 15.4%, H ₂ SO ₄ : 4.0%, AgNO ₃ : 0.24%) consisting of each component of sulfuric acid (acidic compound) and silver nitrate (silver compound) 12. The second bentonite particles were obtained by spraying and attaching 5 g to the surface of the particles. The addition amount (meq / kg) per 1 kg of the particulate matter of each attachment component is shown in FIGS. The thickness of the adhesion layer of one particle of the obtained second bentonite particles was observed under a microscope by the measurement method described later. Although unevenly observed in the range of 4 mm, 0.25 mm of the median value was about 12 times smaller than the minor axis, and 0.4 mm of the maximum value was about 7 times smaller. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.1, and the pH of the deodorant additive-impregnated surface measured with pH paper is 1.2, The pH inside the granular material was 9.4.
[Acid clay granular material]
A smectite clay mined from an acid clay clay deposit located in Shibata City, Niigata Prefecture is used as a raw material, water is added as necessary, and it takes 3 times to a single-shaft horizontal extrusion granulator with a forming plate with a pore size of 10 mm. Mix and relax. The crude granules are granulated using a desk pelleter (rotary roll type vertical extrusion granulator) with a molding plate with a hole diameter of 3 mm, dried at 170 ° C. with a blast box dryer, and crushed The mixture was sieved to obtain acidic clay granules consisting of cylindrical granules having a minor diameter of about 3 mm and a major diameter of 4 to 7 mm. The pH of the obtained acidic clay particles at a concentration of 5% by weight in 1% saline was 5.6. Here, the phrase “add water as needed” means that when the raw material clay contains more than a certain amount of water, it is unnecessary to add it, and if the amount of water is less than the required amount for manufacturing work, the insufficient amount Means to compensate for
[Mixed preparation]
In this example, the three types of particles obtained were [first bentonite particles]: [second bentonite particles]: [acid clay particles] = [85]: [10]: [5] The mixture was mixed at a weight ratio of 1% to 2% to prepare the urine treating material for pets of Example 1.

Among the components of the deodorizing additive to be attached to the second bentonite particles in Example 1, the sulfuric acid as the acidic compound component was changed to aluminum sulfate (CuSO ₄ : 15.4%, Al ₂ (SO ₄ )) ₃ : The petriding material for pets of Example 2 was obtained in the same manner as Example 1 except that 4.6%, AgNO ₃ : 0.24%). The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.2, the pH of the deodorant additive-impregnated surface measured with pH paper is 2.8, the particles The pH inside was 9.4.

In Example 2, among the components of the deodorizing additive to be attached to the second bentonite particles, copper sulfate which is a metal compound component was changed to zinc sulfate (ZnSO ₄ : 15.6%, Al ₂ (SO _{4 3} ) A pet urination treating material of Example 3 was obtained in the same manner as in Example 2 except that 4.6% and AgNO ₃ were 0.24%. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.2, the pH of the deodorant additive-impregnated surface measured with pH paper is 2.8, the particles The pH inside was 9.4.

In Example 2, of the components of the deodorizing additive to be attached to the second bentonite particles, the metal compound component was changed to copper sulfate and zinc sulfate (CuSO ₄ : 7.7%, ZnSO ₄ : 7.8 %, And the same procedure as in Example 2 except for Al ₂ (SO ₄ ) ₃ : 4.6% and AgNO ₃ : 0.24% was carried out, to obtain a urine treating material for pets according to Example 4. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.2, the pH of the deodorant additive-impregnated surface measured with pH paper is 2.8, the particles The pH inside was 9.4.

  The urine treating material for pets according to Example 5 is prepared by mixing the second bentonite particles obtained in Example 2 and the acidic clay particles obtained in Example 1 in a weight ratio of 95: 5. was gotten.

  The urine treating material for pets according to Example 6 is prepared by mixing the second bentonite particles obtained in Example 3 and the acidic clay particles obtained in Example 1 in a weight ratio of 95: 5. was gotten.

Among the components of the deodorizing additive to be attached to the second bentonite particles in Example 2, the concentration of copper sulfate, which is a metal compound component, was reduced to 10 times (CuSO ₄ : 1.54%, Al ₂ ( Second bentonite particles are obtained in the same manner as in Example 2 except for SO ₄ ) ₃ : 4.6%, AgNO ₃ : 0.24%), and only the second bentonite particles are used in the example. It was set as the 7th urine treating material for pets. That is, in the present example, using only the obtained second bentonite particles, the first urine material for bentonite and the acid clay particles were prepared without mixing of the first urine material for pet according to the present invention. is there. The pH of the obtained second bentonite granules at a concentration of 5% by weight in 1% saline is 9.3, the pH of the deodorant additive-impregnated surface measured with pH paper is 3.0, the granules The pH inside was 9.4.

In Example 1, the alkali compound used in the preparation of the first bentonite particles was changed from sodium carbonate to sodium metasilicate (345 g (= 5.67 equivalents) as Na ₂ SiO ₃ ), and the second bentonite was also used. Among the deodorant additive components to be attached to the particulate matter, the concentration of copper sulfate as the metal compound component is doubled, the concentration of sulfuric acid as the acid compound component is doubled, and the concentration of silver nitrate as the silver compound component First bentonite of Example 8 in the same manner as Example 1 except that the concentration of Al is increased fourfold (CuSO ₄ : 30.8%, H ₂ SO ₄ : 2.0%, AgNO ₃ : 0.96%) Granules and second bentonite granules were obtained. The first bentonite particles and second bentonite particles obtained in this example and the acidic clay particles obtained in Example 1 are mixed in a weight ratio of 90: 5: 5, and the pet of Example 8 is obtained. A material for treating urination was prepared. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.6, and the pH of the deodorant additive-impregnated surface measured with pH test paper is 2.4, inside the particle The pH of was 9.6.

In Example 1, among the deodorizing additive components to be attached to the second bentonite particles, copper sulfate as the metal compound component is changed to 4-fold equivalent zinc chloride, and sulfuric acid as the acid compound component is changed to aluminum chloride The second bentonite particles of Example 9 are obtained in the same manner as in Example 1 except that silver nitrate as the silver compound component is not added (ZnCl ₂ : 52.2%, AlCl ₃ : 1.8%). The The first bentonite particles obtained in Example 1, the second bentonite particles obtained in the present example, and the acidic clay particles obtained in Example 1 were prepared at a weight ratio of 90: 5: 5. The mixture was mixed with the above to prepare a pet waste treating material for pets of Example 9. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.4, and the pH of the deodorant additive-impregnated surface measured with pH paper is 3.2, particles The pH inside was 9.4.

In Example 1, among the deodorizing additive components to be attached to the second bentonite particles, the metal compound is a metal compound, and copper sulfate as a main component component in the additive is zinc chloride, and sulfuric acid as an acid compound component is aluminum chloride. The second bentonite particles of Example 10 were prepared in the same manner as in Example 1 except that silver nitrate as a silver compound component was changed and no addition was made (ZnCl ₂ : 13.1%, AlCl ₃ : 3.6%). I got The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.4, and the pH of the deodorant additive-impregnated surface measured with pH paper is 2.6, particles The pH inside was 9.4. The acidic clay particles are prepared by adding an appropriate amount of aluminum sulfate for enhancing the acidity when mixing and kneading the raw material smectite clay in the extrusion granulator in Example 1. Ten acidic clay granules were obtained. The pH of the obtained acidic clay particles at a concentration of 5% by weight in 1% saline was 4.2. The weight ratio of the first bentonite particles obtained in Example 1, the second bentonite particles obtained in this example, and the acid clay particles obtained in this example was 77: 20: 3. The mixture was mixed to prepare a pet waste treating material for pets of Example 10.

In Example 1, the addition amount of sodium carbonate of the alkali compound used in the production of the first bentonite granules is increased to 350 g (= 6.60 equivalents), and the adhesion to the second bentonite granules is carried out Among the odor additive components, the concentration of copper sulfate which is a metal compound component is diluted about five times, the sulfuric acid which is an acid compound component is changed to aluminum sulfate equivalent to two equivalents, and the concentration of silver nitrate which is a silver compound component is Example 1 was prepared in the same manner as Example 1 except that the solution was diluted to 5 times (CuSO ₄ : 3.2%, Al ₂ (SO ₄ ) ₃ : 9.2%, AgNO ₃ : 0.048%). Bentonite granules and second bentonite granules were obtained. The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.6, and the pH of the deodorant additive-impregnated surface measured with pH paper is 2.0, particles The internal pH was 10.0. The acidic clay granules of Example 11 were obtained by preparing the acidic clay granules in Example 9 by changing the aluminum sulfate added for enhancing the acidity to an appropriate amount of sulfuric acid. The pH of the obtained acidic clay particles at a concentration of 5% by weight in 1% saline was 3.0. The first bentonite particles, the second bentonite particles and the acid clay particles obtained in this example are mixed in a weight ratio of 48: 50: 2, and the urine treating material for pets of Example 11 is mixed. Prepared.

In Example 11, of the deodorizing additive component to be attached to the second bentonite particles, the concentration of aluminum sulfate, which is an acidic compound component, was reduced to four times (CuSO ₄ : 3.2%, Al ₂ (SO _{2 4} ) A second bentonite granulate of Example 12 was obtained in the same manner as Example 11 except that ₃ : 2.3%, AgNO ₃ : 0.048%). The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.8, and the pH of the deodorant additive-impregnated surface measured with pH paper is 3.6, particles The internal pH was 10.0. The first bentonite particles, the second bentonite particles, and the acidic clay particles were mixed at a weight ratio of 48: 50: 2 to prepare a pet drainage treatment material for pet of Example 12.

Comparative Example 1

In Example 11, of the deodorizing additive component to be attached to the second bentonite particles, the execution was carried out except that no acidic compound component was added (CuSO ₄ : 3.2%, AgNO ₃ : 0.048%). The second bentonite particles of Comparative Example 1 were obtained in the same manner as Example 11. The pH of the obtained second bentonite granules at a concentration of 5% by weight in 1% saline is 9.9, the pH of the deodorant additive-impregnated surface measured with pH paper is 3.8, granules The pH inside was 10.1. The weight ratio of the first bentonite particles obtained in Example 11, the second bentonite particles obtained in this Comparative Example, and the acidic clay particles obtained in Example 11 was 48: 50: 2 The mixture was mixed to prepare a urine treating material for pets of Comparative Example 1.

Comparative example 2

In Example 1, of the deodorizing additive component to be attached to the second bentonite particles, the metal compound component was not added (Al ₂ (SO ₄ ) ₃ : 4.6%, AgNO ₃ : 0.24 Second bentonite particles of Comparative Example 2 were obtained in the same manner as in Example 1 except for%). The pH of the obtained second bentonite particles at a concentration of 5% by weight in 1% saline is 9.4, and the pH of the deodorant additive-impregnated surface measured with pH paper is 3.2, particles The pH inside was 9.4.
The first bentonite particles obtained in Example 1, the second bentonite particles obtained in the present Comparative Example, and the acidic clay particles obtained in Example 10 were prepared at a weight ratio of 85: 10: 5. The mixture was mixed to prepare a urine treating material for pets.

Comparative example 3

  The first bentonite particles obtained in Example 1 and the acidic clay particles obtained in Example 9 were mixed at a weight ratio of 95: 5 to prepare a urine treating material for pets of Comparative Example 3 .

Comparative example 4

  The first bentonite granular material obtained in Example 1 was used alone to make a urination treatment material for pets of Comparative Example 4. In addition, the urine disposal material for pets which concerns on the comparative example 3 is corresponded to much of the commercially available bentonite cat sand used widely conventionally conventionally.

  The compounding of the granular material obtained in Examples 1 to 12 and Comparative Examples 1 to 4 is shown in FIGS. 1 to 4, and the test results of various physical properties as the urine treating material for pets are shown on FIGS.

<Test method>
[Pre-treatment of each granular material sample (common)]
After drying at 150 ° C for 3 hours, each granular sample to be used in the test for solidification performance is allowed to cool for 1 hour in a silica gel-covered desiccator, and then filled in a zippered polyethylene bag and sealed for storage for 3 days It served for the test within.

[PH of aqueous solution or aqueous suspension]
The pH of each aqueous solution or aqueous suspension was measured with a glass electrode pH meter at room temperature.

[PH in 1% saline solution]
Take 5 g (equivalent to anhydride) of each of the granular samples according to each example and comparative example in a 100 ml beaker, add 95 g of 1% saline, stir with a magnetic stirrer for 10 minutes, and leave it for 30 minutes. The pH of the upper liquid at a depth of 1 to 2 cm from the liquid surface was measured.

[PH of surface of particulate matter (adhesion surface with deodorizing additive)]
The second bentonite granules are drawn with tweezers, a part of the deodorizing additive-adhered surface is dipped in pure water to a depth of about 1 mm and instantly withdrawn, and the wetted surface is immediately after cresol red test paper The color tone of the portion which was lightly pressed and discolored within about 5 seconds was observed with the naked eye, and it was measured as a 0.2 step pH value in the range of 0.4 to 4.4 by comparison with a standard color change table. Subsequently, similar operations were performed using thymol blue test paper and bromphenol blue test paper.

[PH inside particulate matter]
The second bentonite granular material is broken at the approximate center, a part of the granular material is scraped off with tweezers, the broken section is down, and it is dipped in pure water to a depth of about 1 mm and instantaneously pulled up. Lightly press the wet folded section against thymol blue test paper and visually observe the color tone of the central part discolored within about 5 seconds, and compare with the standard color change table, 0. 0 in the range of 8.0 to 12.0. The pH value was measured in 2 steps. Subsequently, a portion of the inside of the granular material was newly removed, and the same operation was performed on alizarin yellow test paper.

[Thickness of Immersion Layer of Deodorant Additive]
When the pH inside the above-mentioned granular material is measured, a substantially circular colored image of the contact surface with the granular material cross section generated on the test paper is observed under a microscope, and imperfections appear in the outer peripheral part of the colored image Of the linear or arc-shaped linear colored portions, those colored in the same color as that of the surface of the granular material mentioned above are regarded as the layer of the deodorizing additive, and the average is The thickness was expressed as a ratio (%) to the diameter of the entire substantially circular color image. In addition, measurement is performed also except Example 1 of the above-mentioned, and the attachment layer is observed unevenly in the range of 0.1-0.4 mm with respect to the short diameter of 2.9 mm about each, The median value The diameter of 0.25 mm was about 12 times smaller than the minor axis, and 0.4 mm of the maximum value was about 7 times smaller. This is considered to be caused by adjusting the concentration and adjusting the spray amount of the deodorant additive aqueous solution even if the addition amount is different.

[Preparation of test urine]
The test urine which was used for various tests by imitating cat real urine was prepared according to the following formulation.
About 500 ml of deionized water is put in a 2 L beaker, and while stirring, the following seven kinds of inorganic reagents (1 to 7) individually weighed are separately added and dissolved, and then the following two kinds of organic reagents ( 8, 9) was also weighed, and deionized water was added to make the total amount 1 kg.
1_ calcium chloride (CaCl ₂ · 2 H ₂ O = 147.01; 99 99%): 74 mg
2_ magnesium chloride (MgCl ₂ · 6 H ₂ O = 203.30; 97 97%): 943 mg
3_ potassium chloride (KCl = 74.55; 99 99%): 9.0 g
4 sodium chloride (NaCl = 58.44; 99 99%): 1.2 g
5_ sodium sulfate (Na ₂ SO ₄ = 142.04; 99 99%): 5.7 g
6_ sodium bicarbonate (NaHCO ₃ = 84.01; 9 99.5%): 4.2 g
7_ Sodium dihydrogen phosphate (NaH ₂ PO ₄ · 2H ₂ O = 155.99; 99 99%): 15.8 g
8_ urea (Urea; CH ₄ N ₂ O = 60.06; 99 99%): 60.7 g
9_ allantoin (Allantoin; C ₄ H ₆ N ₄ O ₃ = 158.12; 98 98%): 3.1 g

The pH was measured by further stirring to obtain a homogeneous solution, and the pH was 6.3 to 6.4 (20 to 30 ° C.). This aqueous solution was used as a test urine used for various performance tests of the present invention.
[Deodorant performance (3-MMB deodorant ability)]
Sensory test with 3-MMB (3-methyl mercapto butanol) aqueous solution 200 ml capacity wide-mouthed glass bottle (bore size: 45.5 mm, made of polyethylene middle lid / polypropylene screw lid, central part of middle lid injection rubber stopper) 20g sample of urine treating material for pets according to each example and comparative example is weighed and spread evenly on the bottom of attached), and 10 ml of 3-MMB aqueous solution (0.01 (W / V)%) as an odor source Is dropped vertically onto the sample, and 5 sets of immediately sealed ones are prepared. After standing for 1 minute at room temperature (20 to 30 ° C), the five monitors remove the lids of either set and open them, and smell the air drifting from the inside, eliminating the 3-MMB odor The odor was classified and evaluated in four stages according to the following evaluation criteria. The reason why the deodorizing ability test of 3-MMB is a sensory test is that 3-MMB is difficult to detect with a detection tube or the like, and can not be detected unless a large and expensive device such as GC-MS is used.
◎: Four or more monitors did not feel the odor of 3-MMB, and one or less felt slightly.
○: Three monitors did not feel the odor of 3-MMB and two felt slightly.
Fair: 3 monitors felt the odor of 3-MMB.
X: Four or more monitors felt the odor of 3-MMB.

[Deodorizing ability 1 (mercaptan deodorizing ability: DO _M (%))]
A pet according to each example and comparative example at the bottom of a wide-mouthed glass bottle with a capacity of 1800 ml (bore size: 58.5 mm, with a polyethylene middle lid / polypropylene screw lid attached, with an inlet rubber stopper attached to the center of the middle lid) 100 g of a sample for treating urination material is weighed and spread flatly, 1 ml of ethyl mercaptan aqueous solution (0.02 (V / V)%) is dropped vertically on the sample as an odor source and sealed immediately at room temperature (20 After standing for 5 minutes at ̃30 ° C., the ethyl mercaptan concentration [EM _R ] (ppm) in the head space was measured using a Kitagawa type gas detection tube (for detecting ethyl mercaptan gas).
The measurement of the blank concentration [EM _B ] was carried out by preparing a blank sample not containing the sample and separately and almost simultaneously at the same place. As a result of measurement, the blank concentration [EM _B ] was 20 ppm.
The obtained ethyl mercaptan concentrations and the blank concentration by substituting the following equation mercaptan deodorizing ability DO _M (%), was determined by an integer value obtained by rounding off the decimals.
DO _M = {([EM _B ]-[EM _R ]) / [EM _B ]} × 100

[Deodorizing ability 2 (Ammonia deodorizing ability: DO _A (%))]
A pet according to each example and comparative example at the bottom of a wide-mouthed glass bottle with a capacity of 1800 ml (bore size: 58.5 mm, with a polyethylene middle lid / polypropylene screw lid attached, with an inlet rubber stopper attached to the center of the middle lid) 100 g of a sample for treating urine for urination was weighed and spread flat, 1 ml of an aqueous ammonia solution (0.7 (W / V)%) was dropped vertically on the sample as an odor source, and immediately sealed. After standing at 30 ° C. for 20 minutes, the ammonia concentration [AM _R ] (ppm) in the head space (near the lower side of the lid) in the glass bottle was measured using a Kitagawa type gas detection tube (for ammonia gas detection).
The measurement of the blank concentration [AM _B ] was performed by preparing a blank sample not containing the sample and separately and almost simultaneously at the same place. As a result of measurement, blank concentration [AM _B ] was 4000 ppm.
The ammonia concentration and the blank concentration thus obtained were substituted into the following equation to determine the ammonia deodorizing ability DO _A (%) by an integer value obtained by rounding off the decimal.
DO _A = {([AM _B ]-[AM _R ]) / [AM _B ]} × 100

[Deodorizing ability (Ammonia deodorizing ability: PO _A (%))]
A pet according to each example and comparative example at the bottom of a wide-mouthed glass bottle with a capacity of 1800 ml (bore size: 58.5 mm, with a polyethylene middle lid / polypropylene screw lid attached, with an inlet rubber stopper attached to the center of the middle lid) 100 g of a sample for treating urine for urination was spread and spread evenly, and as an odor source, 10 g of test urine having a urea concentration of 6.07 (W / W)% and a 0.3 (W / V)% urease aqueous solution (Nata beans Origin, prepared on the day of use) 1 ml of the mixture was rapidly dropped vertically on the sample using a syringe, sealed immediately and allowed to stand at room temperature (20-30 ° C), and after 24 hours It was measured using an ammonia gas concentration [AM O] a _(ppm) Kitagawa gas detector tube of the head space in the glass bottle (for detecting ammonia gas).
The measurement of the blank concentration [AM _B ] was carried out at the same place separately and in the same place without performing the sample. As a result of the measurement, the blank concentration [AM _B ] was 8000 ppm.
The obtained ammonia concentration and blank concentration were substituted into the following formula, and the ammonia deodorizing ability PO _A (%) was determined by rounding off a decimal integer value.
PO _A = {([AM _B ]-[AM _O ]) / [AM _B ]} × 100

[Deodorant performance comprehensive evaluation]
In the present embodiment, as the evaluation of deodorizing performance against malodorous gases generated from pet excrement, deodorizing capability for ethyl mercaptan is classified sulfur (S) based malodorous gases acidic odor (DO _M), the basic odor Deodorizing ability (DO _A ) to ammonia which is classified nitrogen (N) system odor gas, generation of ammonia generated by decomposition of urea in urine by the action of urease possessed by various bacteria inhabiting the tray The deodorizing ability (PO _A ) of deodorizing by preventing the odor, and furthermore, the deodorizing ability to the specific odor of 3-MMB, which is a kind of pheromone-like substance contained more in urine of adult cats, especially in male cats, is measured. By integrating them, they were classified and evaluated in five stages according to the following evaluation criteria (each numerical value is an integer value rounded off a decimal). In the following evaluation criteria, among the criteria that satisfy all four items, the highest criteria is the evaluation of the sample.
S: 3-MMB deodorizing ability: ◎, with DO _M 95 95, and DO _A 99 99, and PO _A 99 99. Deodorizing ability to 3-MMB is extremely high, mercaptan deodorizing ability and deodorizing to ammonia Since both performance and deodorizing ability are extremely high, extremely excellent deodorizing effect can be expected with respect to all the sulfur and nitrogen odors generated from pet urine and feces.
・ A: 3-MMB deodorizing ability: ○ or more, and DO _M ; DO _A ; PO _A satisfies B criteria, any one or more falling under S criteria S slightly inferior to S The deodorizing ability to deodorizing ability to various malodorous components are all high, and an excellent deodorizing effect can be expected as a whole.
· B: 3-MMB deodorizing ability: ○ or more, and DO _M 90 90, DO _A 98 98, and PO _A 98 98 _A high deodorizing ability to 3-MMB, mercaptan deodorizing ability and deodorizing to ammonia Since both performance and deodorizing ability are high, a high deodorizing effect on all the sulfur and nitrogen odors generated from pet urine and feces can be expected.
C: 3-MMB deodorizing ability: more than Δ, any one or more of DO _M ; DO _A ; PO _A falling under the criteria of B somewhat high to slightly insufficient deodorizing effect.
-D: Not applicable to any criteria of S-C Any one or more of deodorizing ability to 3-MMB, mercaptan deodorizing ability, deodorizing ability to ammonia and deodorizing ability to ammonia or less same level as conventional bentonite cat sand or less In some cases, all four types of ability are below the same level as conventional bentonite cat sand, and the deodorizing effect on odor from pet urine and feces is equivalent to or less than the current commercial products.

[Solidification experiment]
Place a sample of the pet urine treating material, which has been dried at 150 ° C in advance, to a depth of about 15 cm in a square or cylindrical tray (container) with a depth of 15 cm or more, and flatten the surface, and then test urine 20 ml The solidified mass obtained by pouring (= 20.8 g) from a height of 1 cm in 30 seconds is taken out after 10 minutes, weight M _A (g) and length L _V (vertical direction) (vertical direction) Measure the following solid absorption and urine absorption capacity and specific solidification length by measuring mm; In this example, the measurement of solidified absorption and specific urine length is performed three times for each sample, and the middle value among the three measured values is adopted to determine the respective solidified absorption and urine specific capacity The
The solidified absorption capacity C _US means the liquid absorption amount (ml) per 100 g of the granular product sample before absorption which constitutes the solidified mass (rounded off after the decimal point), and the specific solidification length SL is It means the solidification length (mm) per unit weight (g) of the solidified mass (round off to the second decimal place).

Solidified suction capacity: C _US (ml / 100g)
C _US = [20 / (M _A −20.8)] × 100
(Wherein, M _A is the weight (g) of the solidified mass absorbed 20 ml of the test urine)

Specific solidification length: SL (mm / g)
SL = L _V / M _C
In the formula, M _C is the weight (g) of the solidified mass having absorbed 20 ml of the test urine, and L _V is the solidified length (mm) in the vertical direction (longitudinal direction).

[Practical evaluation test]
About Example 2, Example 9, Comparative Example 2, and Comparative Example 4, the evaluation result in the case of practical use obtained by asking five monitors was shown in FIG. We selected five owners of indoor rearing cats using the same kind of litter (bentonite-based and fragrance-free) of the same manufacturer until the time of the test request, and requested a sensory test for deodorization and solidification, From the test results, the deodorizing property and the solidifying property were evaluated in five steps according to the evaluation criteria of FIG.

As is clear from FIGS. 5 to 6, the urine treating material for pets according to Examples 1 to 12 is excellent in the deodorizing ability to various malodorous gases, and exhibits a high deodorizing ability to any malodorous gas. In addition, with regard to the solidification performance, it has sufficient performance such that the solidified suction capacity C _US is 50 or more, and the specific solidification length SL is 0.8 or less. In particular, in Examples 5 to 7, the composition ratio of the second bentonite particles is high, and in Example 11, the mixture ratio of the second bentonite particles is high and the surface pH is low. It showed high deodorizing ability.

  On the other hand, in the urine treating material for pets according to Comparative Examples 1 to 4, the deodorizing ability with respect to various types of offensive gases is reduced as a whole. The reason for Comparative Example 1 is that the acidic compound was not added to the deodorizing additive, and it is considered that the pH of the deodorizing additive-adhered surface also exceeded 3.6. Moreover, it is considered that the reason for Comparative Example 2 is that neither the copper compound which is a metal compound nor the zinc compound is added. The reason is that the second bentonite particles are not used in Comparative Examples 3 and 4, and Comparative Example 4 (corresponding to the conventional product) in which the acidic clay particles are not blended is more deodorizing than Comparative Example 3. Performance is declining.

Claims (20)

A first bentonite particle comprising a smectite clay as a main raw material and containing 0.3 to 1.5 equivalents (eq) of exchangeable alkali component per 1 kg of the smectite clay;
Second bentonite particles comprising smectite clay as a main raw material, 0.3 to 1.5 equivalents (eq) of exchangeable alkali component per 1 kg of the smectite clay and having the deodorizing additive localized on the outer surface , Including
The above two types of bentonite particles, when the total amount of particles is 100 parts by weight, the first bentonite particles: second bentonite particles = 0 to 95 (parts by weight): 100 to 5 parts by weight Included by weight ratio of
The deodorizing additive may comprise a copper compound and / or zinc compounds, further seen containing an acidic compound,
The acidic compound is an inorganic acid and / or an acidic inorganic acid salt,
The pH of the surface of the second bentonite granules is measured with a pH paper of 3.6 or less, and the pH measured with the pH paper of the inside of the second bentonite granules is 9.0 or more. Urine treatment material for pets.   The petriding agent according to claim 1, wherein the acidic compound is any one of aluminum sulfate, aluminum chloride and sulfuric acid. The pet excision treating material according to claim 1 or 2 , wherein the exchangeable alkali component is 0.4 to 1.2 chemical equivalents (eq) of the exchangeable sodium component. The pet odor control material according to any one of claims 1 to 3, wherein the deodorizing additive further contains a silver compound. The pet urine treating material according to any one of claims 1 to 4 , wherein a suspension pH of the first bentonite particles in 1% saline is 9.2 or more. The pet urine treating material according to any one of claims 1 to 5 , wherein a suspension pH of the second bentonite particles in 1% saline is 9.0 or more.   The pH of the surface of the second bentonite particles measured by pH paper is 1.0 to 3.4, and the pH measured by the pH paper inside the second bentonite particles is 9.2 to 10 The pet urine disposal material according to any one of claims 1 to 6, which is .2. The addition amount of each additive contained in the deodorant additive per 1 kg of the second bentonite particles is 2 to 100 milliequivalents (meq) in total of the copper compound and / or the zinc compound, and 1 to 50 in the acidic compound. The milli equivalent (meq) and the silver compound are 0.01 to 1 milli equivalent (meq), The urine disposal material for pets according to any one of claims 1 to 7 . The pet urine treating material according to any one of claims 1 to 8 , wherein the copper compound is copper sulfate, the zinc compound is zinc sulfate, and the acidic compound is aluminum sulfate. The pet urine treating material according to any one of claims 4 to 9 , wherein the silver compound is silver nitrate. The second bentonite granular material has a minor axis in the minimum direction of 1 to 5 mm and an aspect ratio (major axis / minor axis) of 1 to 10, and the thickness of the attached layer of the deodorant additive is the minor axis The pet urine disposal material according to any one of claims 1 to 10 , which is less than or equal to one-sixth of. In addition to the first bentonite particles and the second bentonite particles, it further includes an acidic clay particle which is mainly composed of smectite clay and has a suspension pH of 6 or less in 1% saline solution,
The content of the acidic clay granules, according to any one of claims 1 to 11, wherein 1 to 5 parts by weight based on the combined content 100 parts by weight of the two kinds of bentonite granules Urine treatment material for pets. The smectite clay which is the main raw material of the acidic clay granules is a natural acid clay or an activated clay which is an acid-treated product thereof, and the acidic clay granules contain an acidic compound consisting of an inorganic acid and / or an inorganic acid salt. The pet urine treating material according to claim 12 , characterized in that: Solidified urine absorbing ability C _US (ml / 100 g) represented by the following formula (1) is 50 or more, The urine treating material for pets according to any one of claims 1 to 13 .
C _US = [M _C / (M _A −M _P )] × 10 ² ·············· Formula (1)
(Wherein M _A is the volume of M _C (ml) and the weight is M _P (g). The weight of the solidified lump of the urine treating material for pets absorbed in g (g)) An alkaline compound of 0.3 to 0.9 equivalent (eq) is added to 1 kg of the smectite clay on a dry basis of 150 ° C. with respect to the smectite clay, and the mixture is kneaded, and the kneaded product is charged into a granulator. Granulation and subsequent drying to produce the first bentonite granules;
Preparing an aqueous solution of deodorant additive having a pH of 4 or less using a copper compound and / or a zinc compound and an acidic compound;
Spraying the deodorizing additive aqueous solution onto the surface of the first bentonite particles to produce a second bentonite particle;
The first bentonite particles and the second bentonite particles are mixed at a weight ratio of 0 to 95 parts by weight: 100 to 5 parts by weight, and further 0 to 5 parts by weight of the acidic clay particles as required. have a mixing weight ratio of parts,
The acidic compound is an inorganic acid and / or an acidic inorganic acid salt,
The pH of the surface of the second bentonite granules is measured with a pH paper of 3.6 or less, and the pH measured with the pH paper of the inside of the second bentonite granules is 9.0 or more. Of producing a pet urination treatment material for pets. The pet urine treatment according to claim 15 , wherein the alkaline compound is an alkaline sodium compound consisting of one or a combination of two or more selected from the group of sodium carbonate, sodium silicate or sodium hydroxide. Material manufacturing method . The method according to claim 15 or 16, wherein the deodorant additive aqueous solution further contains a silver compound. An acidic compound is added to the smectite clay so that the pH measured at a concentration of 5% by weight using a 1% saline solution becomes 6 or less, and the mixture is kneaded, charged into a granulator, and granulated, The method further includes the step of producing acidic clay granules by drying thereafter,
The acid clay particles are compounded in a weight ratio of 1 to 5 parts by weight with respect to 100 parts by weight of the total of the first bentonite particles and the second bentonite particles. The manufacturing method of the urine disposal material for pets in any one of 15-17 . A copper compound and / or zinc compounds, and a acidic compound, they copper compound with a chemical equivalent ratio and / or zinc compounds: acidic compound = [100]: contains a ratio of [5-500], wherein the acidic compound an inorganic acid and / or deodorizing additive for pet urine disposal material, wherein an inorganic acid salt der Rukoto acidic.   The pet urine void according to claim 19, wherein the silver compound is further contained in a ratio of a copper compound and / or a zinc compound: silver compound = [100]: [0.01 to 2] in a chemical equivalent ratio. Deodorant additive for treated materials.

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