Bentonite cat litter enhancing, dust falling and deodorizing agent and application thereof

Abstract

The invention provides a bentonite cat litter enhanced, dust-reducing and deodorant agent and application thereof. The bentonite cat litter enhanced, dust-reducing and deodorant agent comprises coconut oil monoethanolamide and sodium laurate. The bentonite cat litter comprises bentonite and the bentonite cat litter enhancing, dust falling and deodorant distributed in bentonite particles and on the surfaces of the bentonite particles. The coconut oil monoethanolamide and the sodium laurate in the cat litter have an enhancing effect in the dry cat litter, and have the effects of deodorizing and enhancing caking strength after absorbing moisture and dissolving; sodium laurate also has the effects of assisting in dissolving coconut oil monoethanolamide and precipitating degenerated proteins and nucleotides as well as generated larger molecular nitrogen-containing compounds. Therefore, bentonite cat litter particles obtained by using the bentonite cat litter enhancing, dust-settling and deodorant have the characteristics of high strength, no dust, strong deodorization capability, high water absorption rate and high caking strength, and are suitable for popularization and application.

Description

Technical Field

[0001] The invention belongs to the field of bentonite processing, and in particular relates to a bentonite cat litter enhancement, dust reduction and deodorizing agent and application thereof. Background Art

[0002] At present, there are many types of cat litters sold on the market, including bentonite cat litter, clumping cat litter, crystal cat litter, wood powder cat litter and paper scrap cat litter. Among them, bentonite condensable cat litter is the most commonly used cat litter. It has strong hygroscopicity, good clumping property, and the cheapest price. It can quickly absorb the water and urine in feces and condense into blocks, which is easy to clean. However, the strength of bentonite cat litter particles is poor. It is easy to break into fine particles during production and use, and adhere to cat hair and cat claws. In addition, the fine bentonite cat litter particles will form a large amount of dust, causing dust accumulation on indoor furniture and air pollution.

[0003] The simplest way to solve the strength and dust problems of bentonite cat litter is to produce larger bar or spherical cat litter. However, large-particle cat litter is prone to not being fully absorbed by pet urine and flowing to the bottom of the litter box due to the large gaps between particles.

[0004] The strength and dust of bentonite cat litter can also be solved by adding a binder. Patent CN111937757A provides a small-particle bentonite cat litter, using water glass as a binder to avoid dust generation. Patent CN112400709A crushes sodium bentonite and modified zeolite together for premixing and then adds water glass for bonding and granulation. The water glass added here also plays a bonding and dust-proof role. However, this dust removal method with an external binder often greatly loses the water absorption and adsorption properties of bentonite, etc., making the cat litter performance worse. Summary of the invention

[0005] In order to solve the weakness of bentonite cat litter in the background technology, the present application provides a bentonite cat litter enhancement, dust reduction and deodorant and its application, wherein the bentonite cat litter enhancement, dust reduction and deodorant comprises a mixture of coconut oil monoethanolamide and sodium laurate. The mass of the sodium laurate is 8-12% of the mass of coconut oil monoethanolamide. The bonding effect of the mixture after hot melting is used to increase the strength of bentonite cat litter particles, thereby reducing cat litter dust; the hydrophobic association of the mixture is used to form an association complex with pet excrement and the precipitation of degenerate proteins to eliminate the odor of pet excrement; the water absorption, viscosity and thickening of the mixture are used to improve the agglomeration strength of cat litter.

[0006] A bentonite cat litter comprises bentonite and hard wax-like solids distributed in and on the surface of bentonite particles. The hard wax-like solids are the bentonite cat litter reinforcement, dust reduction and deodorizing agent (comprising a mixture of coconut oil monoethanolamide and sodium laurate). The particle strength of the cat litter is 17-26N.

[0007] The bentonite is sodium bentonite.

[0008] The mass of coconut oil monoethanolamide in cat litter is 3.0%-7.0% of the mass of bentonite, preferably 5.0%.

[0009] The preparation method of the bentonite cat litter comprises the following steps:

[0010] (1) taking cocoyl acid monoethanolamide and sodium laurate, making into aqueous solution, obtaining cocoyl acid monoethanolamide / sodium laurate aqueous solution;

[0011] (2) spraying the above-mentioned coconut oil monoethanolamide / sodium laurate aqueous solution into the natural calcium-based bentonite in the sodiumization process, and in the extrusion process of the double-roll extruder, the coconut oil monoethanolamide and sodium laurate mixed solution evenly enters the calcium-based bentonite;

[0012] (3) obtaining bentonite cat litter through piling, airing, drying and cooling.

[0013] The amount of coconut oil monoethanolamide used is 3.0%-7.0% of the mass of calcium bentonite, preferably 5.0%.

[0014] The concentration of coconut oil monoethanolamide in the coconut oil monoethanolamide / sodium laurate aqueous solution is 4-6%, and the concentration of sodium laurate is 0.4-0.6%.

[0015] The stacking time is 3 days or more.

[0016] The drying temperature is 110-120°C.

[0017] At room temperature, coconut oil monoethanolamide (1:1) is a hard wax-like solid. After the aqueous solution mixed with sodium laurate enters bentonite and is dehydrated and dried, the two are distributed in the bentonite as a molten mixture. After natural cooling, they solidify into a hard wax-like solid. These hard wax-like solids distributed in and on the surface of bentonite cat litter particles provide a certain bonding strength for the cat litter particles, which can significantly reduce the brittleness of the particles, greatly reduce the breakage and wear of cat litter particles during transportation and use, and achieve the purpose of reducing dust in bentonite cat litter.

[0018] The bentonite cat litter compounded with coconut acid monoethanolamide / sodium laurate absorbs the body fluids excreted by pets, and at the same time, uses the hydrophobic association and solubilization effect of surfactants to retain low-molecular organic amines, indoles, organic sulfur, etc. in the pet's excrement in the cat litter, reducing the volatility of these volatile and smelly low-molecular substances, thereby reducing the odor of pet excrement.

[0019] The use of a small amount of sodium laurate can increase the dissolution rate of coconut oil monoethanolamide in pet excrement. Another function of it is to coagulate the degraded protein and its degradation products in pet excrement, which are large molecules with bad smells. In addition to the above-mentioned low-molecular compounds such as nitrogen, degraded and denatured proteins are another major source of fecal odor. Under the pH conditions of pet excrement, degraded proteins carry a net positive charge. After combining with the anionic surfactant sodium laurate, they will denature and precipitate, thereby being fixed in the cat litter particles and reducing the odor of pet excrement.

[0020] The beneficial effects of the present invention are as follows:

[0021] In the present invention, coconut oil monoethanolamide and sodium laurate play a reinforcing role in dry cat litter, and play a role of deodorizing and enhancing agglomeration strength after absorbing moisture and dissolving; sodium laurate in the present application also has the role of dissolving coconut oil monoethanolamide and precipitating degenerate and denatured proteins and nucleotides and the resulting larger molecular nitrogen-containing compounds.

[0022] The technical innovations of the present invention are as follows:

[0023] 1. The bentonite cat litter reinforcement, dust reduction and deodorizing agent of the present invention is condensed in and on the surface of the bentonite cat litter particles, which can increase the strength of the bentonite cat litter particles, reduce brittleness, and increase toughness, effectively solving the defects of bentonite cat litter being fragile and having a large amount of dust.

[0024] 2. The use of the bentonite cat litter enhancement, dust reduction and deodorant of the present invention does not substantially change the original production process of the bentonite cat litter, but only adds a spraying device of the dust prevention and dust reduction agent to the original process, and does not require a large amount of equipment investment.

[0025] 3. The bentonite cat litter enhancement, dust reduction and deodorizing agent of the present invention can utilize its hydrophobic association and hydrogen bonding between polar groups to retain low-molecular-weight organic amines, indoles and the like in the cat litter, thereby reducing the volatility of these low-molecular-weight odors; the sodium laurate in the cat litter enhancement, dust reduction and deodorizing agent can bind to positively charged degraded proteins to denature and precipitate them, and the odor disappears, further reducing the odor of pet excrement. At the same time, the sodium laurate also has the effect of solubilizing coconut oil monoethanolamide, so that it can fully exert its deodorizing effect.

[0026] 4. The coconut oil monoethanolamide in the bentonite cat litter dust-proof and dust-reducing agent of the present invention has excellent water-retaining, viscosity-increasing and thickening properties, which is beneficial to improving the water absorption efficiency and agglomeration strength of the cat litter. DETAILED DESCRIPTION

[0027] Example

[0028] Coconut acid monoethanolamide / sodium laurate mixed aqueous solution: 5% coconut acid monoethanolamide and 0.5% sodium laurate.

[0029] Add industrial soda ash at a mass ratio of 2% of natural calcium-based bentonite for extrusion and sodiumization, and spray the above-mentioned coconut oil monoethanolamide / sodium laurate mixed solution at the same time, so that the mass of coconut oil monoethanolamide sprayed into the mixed solution is 3.0%, 5.0% and 7.0% of the calcium-based bentonite respectively. Cover and seal with plastic film for 3 days, dry at 115°C until the moisture content is ≤12%, sieve, collect 1-3mm particles, and obtain three bentonite cat litter samples A, B, and C containing different coconut oil monoethanolamide / sodium laurate mass fractions.

[0030] Comparative Example

[0031] (1) Add industrial soda ash at a mass ratio of 2% to natural calcium-based bentonite for three times of extrusion sodiumization, cover and seal with a plastic film for 3 days, dry at 115° C. until the moisture content is ≤12%, sieve, collect 1-3 mm particles, and obtain a bentonite cat litter comparison sample.

[0032] Embodiment and comparative example cat litter quality detection method are as follows:

[0033] 1. Water absorption rate: According to GB / T20973-2007 "New water absorption rate test method provided by porous plate method", the specific test steps are as follows: put the porous ceramic plate into a glass container and immerse it in distilled water to make the porous ceramic plate soaked. During the test, the upper surface of the porous ceramic plate is always kept 6±1mm above the water surface, and the temperature of the glass container and water is kept stable at 20±2℃.

[0034] Two pieces of filter paper were immersed in distilled water for 30 seconds to make them saturated with water, and then placed on a porous ceramic plate to balance the moisture for 60 minutes, and then the filter paper was weighed separately.

[0035] Weigh two portions of 5±0.01 g of cat litter samples that have been dried to a constant weight at 105±3°C, and sprinkle them evenly on two wet filter papers. The diameter of the cat litter spread is about 9 cm.

[0036] Place the filter paper and cat litter symmetrically on the porous ceramic plate (be careful not to overlap), cover with the glass container lid. After standing for 2 hours, carefully remove the wet filter paper and cat litter samples with tweezers and a spatula, and weigh them on a balance.

[0037] The water absorption rate of cat litter is calculated according to formula (1):

[0038]

[0039] Where: Wa—water absorption, %; W—mass of wet filter paper and wet cat litter, g; W 0 —Wet filter paper mass, g; m—Dry cat litter sample mass, g.

[0040] 2h water absorption rate (%) ≥ 200 is qualified.

[0041] 2. Leakage test: Spread the cat litter into the cat litter box with a thickness of 5 cm. Put 50 mL of an aqueous solution containing 1% NaCl into a 100 mL separatory funnel. At a height of 30 cm from the cat litter, drip it at a constant speed within 30 seconds. After 120 seconds, check whether the cat litter leaks from the bottom. The cat litter that does not leak from the bottom is qualified.

[0042] 3. Agglomeration strength: agglomeration shape and agglomeration strength

[0043] Spread cat litter in a container of 25cm×12cm×8cm (length×width×height); add 10mL 1% NaCl solution into the cat litter from a height of 2.5cm within 4-5s; after 10s, pour out the agglomerate test block, observe the agglomerate shape and record it. Let the test block fall freely from a height of 75cm, record whether the test block is broken or not, and the test block that is not broken is qualified.

[0044] 4. Deodorization effect test

[0045] Prepare 100 mL of a mixture of 0.01% dimethylamine and 1% sodium chloride and set aside.

[0046] Weigh 2000g of cat litter and put it into the cat litter box. Use a quantitative syringe to draw 20mL of the above solution and inject it into the cat litter at a speed of 1.5mL / s. After 30 minutes, 5 people conduct odor scoring tests respectively. The scoring test and evaluation results are shown in Table 1.

[0047] Table 1 Odor scoring test and evaluation results

[0048]

[0049] The experimental results of the embodiments and comparative examples are shown in Table 2.

[0050] Table 2 Comparative experimental results

[0051]

[0052] As can be seen from Table 2, the cat litter particle strength, dust, odor, water absorption, bottom leakage, and agglomeration strength of the cat litter prepared in the embodiment using the bentonite cat litter enhancement, dust reduction, and deodorization agent of the present application are significantly better than those of pure bentonite cat litter.

Claims

1. A bentonite cat litter enhancement, dust reduction and deodorizing agent, characterized in that: Includes cocoyl monoethanolamide and sodium laurate.

2. A bentonite cat litter enhancement, dust reduction and deodorizing agent as claimed in claim 1, characterized in that: The mass of sodium laurate is 8-12% of the mass of coconut monoethanolamide.

3. A bentonite cat litter, characterized in that: The invention comprises bentonite and hard wax-like solid distributed in and on the surface of bentonite particles, wherein the hard wax-like solid is the bentonite cat litter enhancement, dust reduction and deodorizing agent according to claim 1 or 2, and the particle strength of the cat litter is 17-26N.

4. A bentonite cat litter as claimed in claim 3, characterized in that: The bentonite is sodium bentonite.

5. A bentonite cat litter as claimed in claim 3, characterized in that: The mass of coconut oil monoethanolamide in cat litter is 3.0%-7.0% of the mass of bentonite.

6. A method for preparing bentonite cat litter according to claim 3, characterized in that: The steps include: (1) taking cocoyl acid monoethanolamide and sodium laurate, making into aqueous solution, obtaining cocoyl acid monoethanolamide / sodium laurate aqueous solution; (2) spraying the above-mentioned coconut oil monoethanolamide / sodium laurate aqueous solution into the natural calcium-based bentonite in the sodiumization process, and in the extrusion process of the double-roll extruder, the coconut oil monoethanolamide and sodium laurate mixed solution evenly enters the calcium-based bentonite; (3) obtaining bentonite cat litter through piling, airing, drying and cooling.

7. The preparation method of bentonite cat litter as claimed in claim 6, characterized in that: The amount of coconut oil monoethanolamide used is 3.0%-7.0% of the mass of calcium-based bentonite.

8. The method for preparing bentonite cat litter according to claim 6, wherein: The concentration of cocoyl monoethanolamide in the cocoyl monoethanolamide / sodium laurate aqueous solution is 4-6%.

9. The method for preparing bentonite cat litter according to claim 6, wherein: The stacking time is 3 days or more; the drying temperature is 110-120°C.

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