Composition for k12 random particle product production and method of production of the product

Abstract

The present application relates to the composition for K12 irregular granular product production and the production method of the product, mainly solve the problem of excessive content of micro powder in K12 irregular granular product obtained by crushing K12 acicular product to produce K12 irregular granular product in the prior art, provide a kind of composition for K12 irregular granular product production, using the composition, by drying, extrusion needle forming, grinding, the K12 irregular granular product obtained has the advantages of low content of micro powder, technical scheme is: the composition for K12 irregular granular product production, by weight, including: sodium dodecyl sulfate, 100 parts;Additive, more than 0 and below 5 parts;pH stabilizer, 0.1-2 parts;Water, 20-200 parts;The additive includes water-soluble polymer.

Description

TECHNICAL FIELD

[0001] The present application relates to a composition for K12 irregular granular product production and a production method of the product. BACKGROUND

[0002] Sodium dodecyl sulfate, namely K12, belongs to an anionic surfactant, and is mainly applied to toothpaste, shampoo, pesticide emulsifier, solid detergent, building additive, plastic additive, etc. There are generally two types of liquid K12 and solid K12, the liquid K12 mainly contains about 30% sodium dodecyl sulfate (the product is unstable and prone to stratification), and the solid K12 mainly contains more than 90% sodium dodecyl sulfate. The solid K12 is more widely applied and favored by the market due to its convenient transportation, storage and use and lower cost.

[0003] There are mainly three specifications of solid K12 on the market, namely, beaded, powdery and acicular. The beaded K12 is similar to spherical particles, and the particle size is mainly 1.0-2.0 mm; the powdery K12 is powder, and the particle size is mainly 100-300 μm; the acicular K12 has a long strip shape, and the length is 2-15 mm and the diameter is 1.1-1.3 mm.

[0004] The beaded K12 has the advantages of the acicular and powdery K12, namely, easy to dissolve, can be directly used in solid products with high appearance requirements, and less fine powder, but the manufacturing process is complex, the energy consumption is high, the cost is high, and the market share is small. The powdery product is generally used in paste washing products, such as toothpaste, and can also be used in dilution, but due to its light density, there are problems of floating on the surface of the solvent such as water and agglomeration in the dissolution process, causing difficult dissolution, long dissolution time, etc. Directly used in solid products also has the problem of high fine powder content, and the powder is easy to caking, which also causes inconvenience to the downstream use. The fine powder is small and light, and the feeding is easy to produce dust, the dust has certain irritancy, and there are unsafe factors.

[0005] The acicular product has good solubility and is not easy to caking, and can be added to liquid products after dissolution or directly added to solid detergents, but due to the different lengths of the acicular product, the product is loose and occupies too much packaging space, and the packaging volume is not conducive to stable control. In order to solve the above problems of the acicular product, the K12 irregular granular product can be obtained by processing the acicular product with a centrifugal mill, but fine powder is easy to be produced in the operation process of the centrifugal mill, which affects the production environment, and the corresponding irregular granular K12 product contains more fine powder (particles with a mesh number greater than 150), which will also affect the consumption experience of the downstream customers. Of course, in order to improve the consumption experience of the downstream customers, we can choose to screen out the fine powder by using a 150 mesh sieve, but it will also naturally increase the dust trouble in the screening process and increase the production cost due to the screening step. SUMMARY

[0006] One of the technical problems to be solved by the present application is the problem of excessive content of fine powder in K12 random granular product produced by crushing K12 acicular product in the prior art, and the present application provides a composition for K12 random granular product production, which has the advantage of low content of fine powder in K12 random granular product obtained by drying, extrusion needle molding and grinding using the composition.

[0007] To solve one of the above technical problems, the technical solution of the present application is as follows:

[0008] The composition for K12 random granular product production comprises, by weight:

[0009] Sodium dodecyl sulfate, 100 parts;

[0010] Additive, more than 0 parts and less than or equal to 5 parts;

[0011] pH stabilizer, 0.1-2 parts;

[0012] Water, 20-200 parts;

[0013] The additive comprises a water-soluble polymer.

[0014] The use of the water-soluble polymer reduces the content of fine powder in the K12 random granular product, thereby reducing the generation of dust during the production of the K12 random granular product and the trouble caused by fine powder in subsequent operation of the product.

[0015] For example only, but not limited to, the additive is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, etc.

[0016] For example only, but not limited to, the additive is 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1, 1.5, 2, 2.5, 3, 3.5, 4, 4.5, etc.

[0017] In the above technical solution, the pH stabilizer is commonly used in the art. For example, but not limited to, the pH stabilizer comprises at least one selected from the group consisting of alkali metal salts of carbonic acid, alkali metal salts of phosphoric acid and alkali metal salts of citric acid.

[0018] In the above technical solutions, as a non-limiting example, the amount of pH stabilizer used is, but not limited to, 0.12 parts, 0.13 parts, 0.14 parts, 0.15 parts, 0.16 parts, 0.17 parts, 0.2 parts, 0.3 parts, 0.4 parts, 0.5 parts, 1 part, 1.5 parts, etc. The measurement form of the pH stabilizer is in accordance with the conventions of those skilled in the art. For example, when the pH stabilizer includes an alkali metal salt of carbonate, the amount of alkali metal salt of carbonate is calculated as sodium carbonate (Na2CO3) and / or sodium bicarbonate (NaHCO3); when the pH stabilizer includes an alkali metal salt of phosphoric acid, the amount of alkali metal salt of phosphoric acid is calculated as phosphoric acid (H3PO4); when the pH stabilizer includes an alkali metal salt of citric acid, the amount of alkali metal salt of citric acid is calculated as sodium citrate (C6H5Na3O7).

[0019] In the above technical solution, the pH of the composition is preferably 8.5 to 9.5, such as, but not limited to, pH 8.6, 8.7, 8.8, 8.9, 9.0, 9.1, 9.2, 9.3, 9.4, etc.

[0020] In the above technical solution, the water-soluble polymer is not particularly limited, and may include, but is not limited to, at least one of the substances selected from the group consisting of carboxymethyl cellulose alkali metal salt, polyacrylamide, polyacrylate alkali metal salt, polyethylene glycol and polyvinyl alcohol.

[0021] In the above technical solution, the alkali metal in the carboxymethyl cellulose alkali metal salt is preferably potassium or sodium. In specific embodiments of the present invention, the carboxymethyl cellulose alkali metal salt is measured as sodium carboxymethyl cellulose.

[0022] In the above technical solution, the alkali metal in the polyacrylic acid alkali metal salt is preferably potassium or sodium.

[0023] For comparative purposes only, sodium carboxymethyl cellulose is used when water-soluble polymers are mentioned in the examples and comparative examples of this invention.

[0024] In the above technical solution, the additive preferably includes a monobasic fatty acid alkali metal salt.

[0025] In the above technical solution, the mass ratio of the monobasic fatty acid alkali metal salt to the water-soluble polymer is 0 to 0.5. For example, but not limited to, this mass ratio is 0.01, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, etc.

[0026] In the above technical solution, the alkali metal in the fatty acid alkali metal salt is preferably K or Na. All fatty acid alkali metal salts are measured as sodium fatty acid.

[0027] In the above technical solution, the fatty acid is preferably a C7-C10 fatty acid, that is, the fatty acid is preferably free from at least one of the following groups of substances composed of fatty acids with the following carbon numbers: C7, C8, C9, and C10. The addition of the fatty acid alkali metal salt enhances the effect of the water-soluble polymer in reducing the micron content. We found that this enhancing effect is significantly reduced when the number of carbons in the fatty acid is less than 7 or greater than 10. In particular, when the fatty acid alkali metal salt includes 2-ethylhexanoic acid alkali metal salt and n-octanoic acid alkali metal salt, the 2-ethylhexanoic acid alkali metal salt and n-octanoic acid alkali metal salt have a synergistic effect in enhancing the effect of the water-soluble polymer in reducing the micron content.

[0028] To achieve a better synergistic effect between the alkali metal salts of 2-ethylhexanoate and n-octanoate, a more preferred molar ratio of 2-ethylhexanoate to n-octanoate is 0.05 to 0.4. For example, but not limited to, molar ratios of 2-ethylhexanoate to n-octanoate of 0.06, 0.08, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, etc.

[0029] The composition of this invention can be obtained by simply mixing the required components evenly. However, it is more convenient to obtain the sulfonated dodecyl sulfate on-site in the sulfonation production unit by further neutralization and addition of the required components. The dodecyl sulfate material obtained from the sulfonation unit is usually obtained by reacting dodecyl alcohol as an organic raw material with SO3 as a sulfonating agent. This is only an example, and the dodecyl sulfate materials used in the embodiments and comparative examples of this invention are all obtained by this process.

[0030] For example, but not limited to, obtaining the compositions of the present invention from dodecyl sulfate materials may include the following steps:

[0031] (i) Obtaining dodecyl sulfate material;

[0032] (ii) Neutralize with sodium hydroxide solution.

[0033] The additive (or additive precursor) and the pH stabilizer (pH stabilizer precursor) may be added independently at the following stages: Stage 1 – added between step (i) and step (ii); Stage 2 – during the neutralization process of step (ii); Stage 3 – after step (ii).

[0034] Those skilled in the art will readily understand that the additive precursor is a substance that can be converted into the additive through a neutralization reaction with sodium hydroxide; for example, the precursor of carboxymethyl cellulose alkali metal salt can be carboxymethyl cellulose, the precursor of polyacrylic acid alkali metal salt can be polyacrylic acid, and the precursor of monobasic fatty acid alkali metal salt can be monobasic fatty acid. Similarly, the pH stabilizer precursor is a substance that can be converted into the pH stabilizer through a neutralization reaction with sodium hydroxide; for example, when an alkali metal salt of phosphoric acid is used as the pH stabilizer, its precursor can be phosphoric acid; when an alkali metal salt of citric acid is used as the pH stabilizer component, its precursor can be citric acid.

[0035] To improve the faster and more uniform dispersion of the additives and / or pH stabilizers in the composition, the additives (or additive precursors) and / or pH stabilizers (or pH stabilizer precursors) may be dissolved in a suitable solvent and added.

[0036] For comparison only, in the embodiments and comparative examples of the present invention, the pH stabilizer is added in the form of a pH stabilizer aqueous solution with a weight concentration of 50%, and the additive is added in the form of an additive aqueous solution with an additive concentration of 10%.

[0037] Heating and stirring are beneficial for the dissolution of additives. However, in order to increase the dissolution rate, it is necessary to fully swell the water-soluble polymer in water before heating, as is known to those skilled in the art.

[0038] Those skilled in the art also know that when the pH stabilizer includes an alkali metal salt of carbonate, the alkali metal salt of carbonate is not suitable for addition in step 1, nor is it suitable for addition in step 2 when the system material is still acidic, because dodecyl sulfate is highly acidic, and the alkali metal carbonate will release CO2 in an acidic environment, causing the pH stabilizer to be lost.

[0039] The second technical problem to be solved by the present invention is to provide a method for producing K12 random particle products.

[0040] To solve the second technical problem mentioned above, the technical solution of the present invention is as follows:

[0041] The production method of K12 random particle products includes:

[0042] (1) The composition of any one of the technical solutions to the above-mentioned technical problems is heated to remove water, resulting in material I;

[0043] (2) Extrusion yields needle-shaped K12 material II;

[0044] (3) Grind into powder to obtain K12 random particle product.

[0045] Those skilled in the art will know that, in order to facilitate the extrusion process in step (2), the moisture content of material I by weight should be controlled within the range of 3.5 ± 1.0%. This is because if the moisture content is too low, the power consumption of the extruder will be high, and if the moisture content is too high, the material will become viscous and the extrudate will not be able to form needles. In order to achieve this moisture content, those skilled in the art can reasonably select the heating and dehydration conditions in step (1).

[0046] The above technical solutions do not have any particular limitations on the method of heating to remove water, and industrial applications often include film drying.

[0047] As a non-limiting example, the temperature for heating and dewatering can be 90–110°C. Within this temperature range, more specific examples of non-limiting heating and dewatering temperatures include, but are not limited to, 91°C, 92°C, 93°C, 94°C, 95°C, 96°C, 97°C, 98°C, 99°C, 100°C, 101°C, 102°C, 103°C, 104°C, 105°C, 106°C, 107°C, 108°C, 109°C, etc.

[0048] Those skilled in the art will understand that lower heating pressure is more conducive to increasing the dehydration rate. However, when the pressure is below atmospheric pressure, lower pressure increases the manufacturing cost of the required equipment and supporting facilities. When the pressure is above atmospheric pressure, higher pressure not only increases the equipment manufacturing cost but also reduces the dehydration rate. These are considerations made by those skilled in the art based on specific circumstances, and the reasonable selection of heating pressure does not require creative effort. As a non-limiting example, the pressure can be above 50 kPa but below atmospheric pressure (103.3 kPa). Within this range, non-limiting pressure values ​​can be 55, 60, 65, 70, 75, 80, 85, 90, 95, 100, or 103 kPa.

[0049] Similarly, the heating and dehydration time of the composition of the present invention can be reasonably determined by those skilled in the art as needed, without requiring creative effort. It is known that the longer the heating and dehydration time, the more thorough the dehydration tends to be. For example, when the heating and dehydration method employs a scraped film dryer, the residence time of the composition of the present invention in the scraped film dryer can be, but is not limited to, 20 to 100 seconds. More specific, non-limiting residence time values ​​within this range can be 25 seconds, 30 seconds, 35 seconds, 40 seconds, 45 seconds, 50 seconds, 55 seconds, 60 seconds, 65 seconds, 70 seconds, 75 seconds, 80 seconds, 85 seconds, 90 seconds, 95 seconds, etc. For comparison, the residence time in the specific embodiments of the present invention is 50 seconds.

[0050] In the embodiments and comparative examples of this invention, the above-mentioned step (1) heating and dehydration uses a scraped film dryer. In order to make the moisture content of material I by weight 3.5±1.0%, those skilled in the art can easily and reasonably determine the specific process conditions for the heating and dehydration operation of step (1) using a scraped film dryer without having to make any creative effort. For example, reducing the feed rate of the scraped film dryer tends to result in a lower water content, while increasing the feed rate tends to result in a higher water content; increasing the drying temperature tends to result in a lower water content, while decreasing the drying temperature tends to result in a higher water content; increasing the operating pressure of the scraped film dryer tends to result in a higher water content, while decreasing the operating pressure of the scraped film dryer tends to result in a lower water content, and so on.

[0051] For ease of comparison, the specific process conditions used in the specific embodiments of the present invention all ensure that the moisture content of material 1 is 3.5 ± 1.0% by weight:

[0052] Film scraping motor: Three-phase asynchronous motor;

[0053] Voltage of the motor in the scraped film dryer: 380V;

[0054] The frequency of the motor in the scraped film dryer is 50 Hz.

[0055] The motor speed of the scraped film dryer is 1480 r / min;

[0056] The speed ratio of the reducer in the scraped film dryer is 6.54;

[0057] In a specific embodiment, the flow rate of the composition of the present invention entering the scraped film dryer is 1200 kg / h;

[0058] Operating pressure of the scraped film dryer: 95 kPa;

[0059] Film drying temperature: 105℃;

[0060] The residence time of the composition of the present invention in the scraped film dryer is 50 seconds.

[0061] In the above technical solution, in step (2) needle-shaped K12 material II, the diameter of the needle-shaped material is preferably 1 to 3 mm. For comparison and illustration only, the die head orifice plate of the extruder used in the embodiments and comparative examples of the present invention has a circular hole with a diameter of 1.1 mm, so the diameter of the needle-shaped material falls within the range of 1 to 3 mm.

[0062] In the above technical solutions, the extrusion temperature of the extruder is preferably 60–90°C. For example, but not limited to, 65°C, 70°C, 75°C, 80°C, 85°C, etc. For comparison only, the extrusion temperature of the embodiments and comparative examples of the present invention is 70°C.

[0063] In the above technical solution, regarding step (2), we found that the length of the needle-like shape of material II, as the grinding raw material in step (3), has no significant impact on the micro powder content in the K12 random particle product in step (3). However, considering the need to appropriately reduce the volume occupied by the needle-like material in the storage silo, it is possible to cut material II into short needle-shaped materials during extrusion, or to cool and break it into short needle-shaped materials after extrusion. For comparison only, in both the embodiments and comparative examples of the present invention, the material II in step (2) is broken into short needle-shaped materials of varying lengths with a length ranging from 5.5 ± 4.5 mm by the additional cooling and breaking machine through the cooling and breaking method.

[0064] In the above technical solutions, there are no particular restrictions on the equipment used for grinding in step (3), and comparable technical effects can be achieved in all cases. For example, but not limited to, using a centrifugal grinding mill.

[0065] Centrifugal grinding mills have built-in screens with mesh sizes typically between 20 and 50 mesh. To prevent adverse effects from frictional heating of the material during grinding, as those skilled in the art know, cooling of the grinding mill is necessary. For comparative purposes only, the centrifugal grinding mill used in the embodiments and comparative examples of this invention is a TPB600 model, provided by Shanghai Kainuowei International Trade Co., Ltd., with a 35-mesh built-in screen and a cooling air (nitrogen) temperature of 20°C.

[0066] In this invention, the method or definition for measuring pH value is as follows: Weigh 10.0g of the sample, dissolve it in water to make 1L of solution, and measure the pH value at 25℃. This pH value is the pH value of the sample.

[0067] The water content in the composition was determined using the Karl Fischer method as specified in GB / T7380-1995, "Determination of Water Content in Surfactants and Detergents".

[0068] The determination of the fine powder content in K12 random granule products was carried out according to the method of "GB 12030-1989 Determination of Particle Size of Powdered Detergents". The standard sieve used was 150 mesh. The material that passed through the standard sieve and fell into the bottom pan below the sieve was considered as fine powder. Therefore, the formula for calculating the fine powder content is as follows:

[0069] Micron content % = (mass of sample in the chassis / mass of sample added to the standard sieve) × 100%.

[0070] The present invention will be illustrated below with specific examples of its implementation. Detailed Implementation

[0071] In both the examples and comparative examples, the dodecyl sulfate materials were obtained by a sulfonation method using dodecyl alcohol as the organic raw material and SO3 as the sulfonating agent.

[0072]

Example 1

[0073] 1. Preparation of the composition of the present invention

[0074] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), and neutralize it to pH 9 with a 32% sodium hydroxide aqueous solution while stirring. Then add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium carboxymethyl cellulose). Stir until homogeneous to obtain the composition of the present invention. Based on the water content measurement, the composition of the composition is determined to be as follows:

[0075] Sodium dodecyl sulfate, 100 parts by weight;

[0076] Sodium citrate, 0.15 parts by weight;

[0077] Sodium carboxymethyl cellulose, 0.20 parts by weight;

[0078] Water, 38 parts by weight.

[0079] 2. Scraping and drying

[0080] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0081] 3. Extrusion by extruder

[0082] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0083] 4. Grinding with a centrifugal grinding mill

[0084] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 21.3%.

[0085]

Comparative Example 1

[0086] To better compare with the example, 2.0 parts by weight of water were used instead of 2.0 parts by weight of the additive aqueous solution, specifically:

[0087] 1. Preparation of the composition of the present invention

[0088] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), and neutralize it to pH 9 with a 32% sodium hydroxide aqueous solution while stirring. Then add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of water, and stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition is determined to be as follows:

[0089] Sodium dodecyl sulfate, 100 parts by weight;

[0090] Sodium citrate, 0.15 parts by weight;

[0091] Water, 38 parts by weight.

[0092] 2. Scraping and drying

[0093] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0094] 3. Extrusion by extruder

[0095] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0096] 4. Grinding with a centrifugal grinding mill

[0097] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 35.1%.

[0098]

Example 2

[0099] 1. Preparation of the composition of the present invention

[0100] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium n-heptate and sodium carboxymethyl cellulose, with a weight ratio of sodium carboxymethyl cellulose to sodium n-heptate of 3.0), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0101] Sodium dodecyl sulfate, 100 parts by weight;

[0102] Sodium citrate, 0.15 parts by weight;

[0103] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0104] Sodium n-heptanoate, 0.05 parts by weight;

[0105] Water, 38 parts by weight.

[0106] 2. Scraping and drying

[0107] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0108] 3. Extrusion by extruder

[0109] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0110] 4. Grinding with a centrifugal grinding mill

[0111] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 12.4%.

[0112] [Comparative Example 2]

[0113] 1. Preparation of the composition of the present invention

[0114] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium n-heptate), stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition is determined to be as follows:

[0115] Sodium dodecyl sulfate, 100 parts by weight;

[0116] Sodium citrate, 0.15 parts by weight;

[0117] Sodium n-heptanoate, 0.20 parts by weight;

[0118] Water, 38 parts by weight.

[0119] 2. Scraping and drying

[0120] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0121] 3. Extrusion by extruder

[0122] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0123] 4. Grinding with a centrifugal grinding mill

[0124] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 35.0%.

[0125]

Example 3

[0126] 1. Preparation of the composition of the present invention

[0127] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize it to pH 9 with a 32% sodium hydroxide aqueous solution while stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium n-octanoate and sodium carboxymethyl cellulose, with a weight ratio of sodium carboxymethyl cellulose to sodium n-octanoate of 3.0), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0128] Sodium dodecyl sulfate, 100 parts by weight;

[0129] Sodium citrate, 0.15 parts by weight;

[0130] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0131] Sodium octanoate, 0.05 parts by weight;

[0132] Water, 38 parts by weight.

[0133] 2. Scraping and drying

[0134] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0135] 3. Extrusion by extruder

[0136] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0137] 4. Grinding with a centrifugal grinding mill

[0138] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 5.7%.

[0139] [Comparative Example 3]

[0140] 1. Preparation of the composition of the present invention

[0141] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium n-octanoate), stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition is determined to be as follows:

[0142] Sodium dodecyl sulfate, 100 parts by weight;

[0143] Sodium citrate, 0.15 parts by weight;

[0144] Sodium octanoate, 0.20 parts by weight;

[0145] Water, 38 parts by weight.

[0146] 2. Scraping and drying

[0147] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0148] 3. Extrusion by extruder

[0149] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0150] 4. Grinding with a centrifugal grinding mill

[0151] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 34.8%.

[0152]

Example 4

[0153] 1. Preparation of the composition of the present invention

[0154] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize it to pH 9 with a 32% sodium hydroxide aqueous solution while stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additive is sodium 2-ethylhexanoate and sodium carboxymethyl cellulose, with a weight ratio of sodium carboxymethyl cellulose to sodium 2-ethylhexanoate of 3.0), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0155] Sodium dodecyl sulfate, 100 parts by weight;

[0156] Sodium citrate, 0.15 parts by weight;

[0157] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0158] Sodium 2-ethylhexanoate, 0.05 parts by weight;

[0159] Water, 38 parts by weight.

[0160] 2. Scraping and drying

[0161] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0162] 3. Extrusion by extruder

[0163] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0164] 4. Grinding with a centrifugal grinding mill

[0165] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 7.0%.

[0166] [Comparative Example 4]

[0167] 1. Preparation of the composition of the present invention

[0168] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium 2-ethylhexanoate), stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition of the composition is determined to be as follows:

[0169] Sodium dodecyl sulfate, 100 parts by weight;

[0170] Sodium citrate, 0.15 parts by weight;

[0171] Sodium 2-ethylhexanoate, 0.20 parts by weight;

[0172] Water, 38 parts by weight.

[0173] 2. Scraping and drying

[0174] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0175] 3. Extrusion by extruder

[0176] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0177] 4. Grinding with a centrifugal grinding mill

[0178] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 35.2%.

[0179]

Example 5

[0180] 1. Preparation of the composition of the present invention

[0181] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium nonanoate and sodium carboxymethyl cellulose, with a weight ratio of sodium carboxymethyl cellulose to sodium nonanoate of 3.0), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0182] Sodium dodecyl sulfate, 100 parts by weight;

[0183] Sodium citrate, 0.15 parts by weight;

[0184] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0185] Sodium nonanoate, 0.05 parts by weight;

[0186] Water, 38 parts by weight.

[0187] 2. Scraping and drying

[0188] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0189] 3. Extrusion by extruder

[0190] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0191] 4. Grinding with a centrifugal grinding mill

[0192] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 9.6%.

[0193] [Comparative Example 5]

[0194] 1. Preparation of the composition of the present invention

[0195] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution while stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium nonanoate), stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition of the composition is determined to be as follows:

[0196] Sodium dodecyl sulfate, 100 parts by weight;

[0197] Sodium citrate, 0.15 parts by weight;

[0198] Sodium nonanoate, 0.20 parts by weight;

[0199] Water, 38 parts by weight.

[0200] 2. Scraping and drying

[0201] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0202] 3. Extrusion by extruder

[0203] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0204] 4. Grinding with a centrifugal grinding mill

[0205] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 34.3%.

[0206]

Example 6

[0207] 1. Preparation of the composition of the present invention

[0208] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium decanoate and sodium carboxymethyl cellulose, with a weight ratio of sodium carboxymethyl cellulose to sodium decanoate of 3.0), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0209] Sodium dodecyl sulfate, 100 parts by weight;

[0210] Sodium citrate, 0.15 parts by weight;

[0211] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0212] Sodium n-decanoate, 0.05 parts by weight;

[0213] Water, 38 parts by weight.

[0214] 2. Scraping and drying

[0215] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0216] 3. Extrusion by extruder

[0217] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0218] 4. Grinding with a centrifugal grinding mill

[0219] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 19.2%.

[0220] [Comparative Example 6]

[0221] 1. Preparation of the composition of the present invention

[0222] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10% and is sodium n-decanoate), stir evenly to obtain the composition of the present invention. Based on the water content measurement, the composition is determined to be as follows:

[0223] Sodium dodecyl sulfate, 100 parts by weight;

[0224] Sodium citrate, 0.15 parts by weight;

[0225] Sodium n-decanoate, 0.20 parts by weight;

[0226] Water, 38 parts by weight.

[0227] 2. Scraping and drying

[0228] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0229] 3. Extrusion by extruder

[0230] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0231] 4. Grinding with a centrifugal grinding mill

[0232] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 33.5%.

[0233]

Example 7

[0234] 1. Preparation of the composition of the present invention

[0235] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium 2-ethylhexanoate, sodium n-octanoate, and sodium carboxymethyl cellulose, with a weight ratio of sodium 2-ethylhexanoate:sodium n-octanoate:sodium carboxymethyl cellulose of 1:4:15), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0236] Sodium dodecyl sulfate, 100 parts by weight;

[0237] Sodium citrate, 0.15 parts by weight;

[0238] Sodium carboxymethyl cellulose, 0.15 parts by weight;

[0239] Sodium 2-ethylhexanoate, 0.01 parts by weight;

[0240] Sodium octanoate, 0.04 parts by weight;

[0241] Water, 38 parts by weight.

[0242] 2. Scraping and drying

[0243] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0244] 3. Extrusion by extruder

[0245] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0246] 4. Grinding with a centrifugal grinding mill

[0247] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 2.4%.

[0248] [Comparative Example 7]

[0249] 1. Preparation of the composition of the present invention

[0250] Take 92.6 parts by weight of dodecyl sulfate material (equivalent to 100 parts by weight of sodium dodecyl sulfate), neutralize to pH 9 with a 32% sodium hydroxide aqueous solution under stirring, add 0.30 parts by weight of a 50% sodium citrate aqueous solution and 2.0 parts by weight of an additive aqueous solution (the additive has a weight concentration of 10%, and the additives are sodium 2-ethylhexanoate and sodium n-octanoate, with a weight ratio of sodium 2-ethylhexanoate to sodium n-octanoate of 1:4), stir evenly to obtain the composition of the present invention. Combined with water content measurement, the composition of the composition is determined to be:

[0251] Sodium dodecyl sulfate, 100 parts by weight;

[0252] Sodium citrate, 0.15 parts by weight;

[0253] Sodium 2-ethylhexanoate, 0.04 parts by weight;

[0254] Sodium octanoate, 0.16 parts by weight;

[0255] Water, 38 parts by weight.

[0256] 2. Scraping and drying

[0257] The composition obtained in Section "1" above is continuously fed into the scraped film dryer at a feed rate of 1200 kg / h. The scraped film drying temperature is 105℃, and the operating pressure of the scraped film dryer is 95 kPa. The scraped film dryer is connected to the scraped film motor via a reducer. The voltage of the scraped film dryer motor is 380V, the frequency of the scraped film dryer motor is 50 Hz, the speed of the scraped film dryer motor is 1480 r / min, the speed ratio of the scraped film dryer reducer is 6.54, and the residence time of the material to be dried in the scraped film dryer is 50 seconds, resulting in material I.

[0258] 3. Extrusion by extruder

[0259] The material I obtained in Section 2 is extruded into needles using an extruder. The holes in the extruder die head plate are of the original shape with a diameter of 1.1 mm, and the extrusion temperature is 70℃. The extruded material is then broken into short needle-shaped materials of varying lengths, with a length ranging from 5.5 ± 4.5 mm, by a cooling and breaking machine.

[0260] 4. Grinding with a centrifugal grinding mill

[0261] The above-mentioned short needle-shaped material was ground into powder using a centrifugal mill with a built-in 35-mesh screen to obtain K12 random particle product, in which the weight content of micro powder was 34.9%.

Claims

1. A composition for the production of K12 random particulate products, comprising, by weight: Sodium dodecyl sulfate, 100 parts; Additives, greater than 0 parts and less than 5 parts; pH stabilizer, 0.1~2 parts; and Water, 20-200 parts; The additives include water-soluble polymers; The water-soluble polymer is a carboxymethyl cellulose alkali metal salt; The additives include monobasic fatty acid alkali metal salts; The monobasic fatty acid is a C7 to C10 fatty acid.

2. The composition according to claim 1, characterized in that... The monobasic fatty acid alkali metal salts include 2-ethylhexanoic acid alkali metal salt and n-octanoic acid alkali metal salt.

3. The composition according to claim 2, characterized in that... The molar ratio of 2-ethylhexanoic acid alkali metal salt to n-octanoic acid alkali metal salt is 0.05 to 0.

4.

4. The composition according to claim 1, characterized in that... The amount of water is 30 to 80 parts.

5. The composition according to claim 1, characterized in that... The pH stabilizer comprises at least one substance selected from the group consisting of an alkali metal salt of carbonic acid, an alkali metal salt of phosphoric acid, and an alkali metal salt of citric acid.

6. The composition according to claim 1, characterized in that... The alkali metal in the monobasic fatty acid alkali metal salt is K or Na.

7. A method for producing K12 random granule products, including: (1) Heating the composition according to any one of claims 1 to 6 to remove water yields material I; (2) Extrusion yields needle-shaped K12 material II; (3) Grind into powder to obtain K12 random particle product.

8. The production method according to claim 7, characterized in that: Step (1) Use a scraped film dryer.

9. The production method according to claim 7, characterized in that: Step (1) The temperature for heating to remove water is 90~110℃.

10. The production method according to claim 7, characterized in that: The pressure for heating and dehydration is 50~103 kPa.