JPH10331066A - Granular textile-softening composition and its production - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a granular softening agent free from dusting trouble even in the form of powder, extremely quickly dispersible in water, having improved adsorptivity of smectite to fiber and enabling quick softening treatment by preparing the granule to have a specific particle size. SOLUTION: This granular textile-softening composition is a granular material containing 30-95 wt.% of smectite, 0.1-50 wt.% of magnesium sulfate, 0.1-50 wt.% of a binder composed mainly of a water-soluble phosphate and 0.5-25 wt.% of water. Not less than 80 wt.% of the granular material has particle diameter of 250-2,000 μm determined by JIS Standard Sieves.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a granular fiber softening composition containing smectite as a main component and having excellent dispersibility in water, adsorbing power on cloth and softening effect, and a method for producing the same.

[0002]

2. Description of the Related Art In general, when washing clothes at home to impart flexibility, the washing components are rinsed with a large amount of water after washing with a detergent, and thereafter, cationic surfactants such as quaternary ammonium salts are used. A method is employed in which a softening agent containing a softening agent as a main component is added for treatment. However, organic softeners such as cationic surfactants have a drawback such as lowering water absorption and giving a slimy or sticky feeling, so that the feel after use is reduced, and Inorganic smectites, which are friendly to humans and the environment, have been used (JP-A-53-94695, JP-A-3-137276).

When such a smectite is used as a softening agent, it can be in a liquid or powder form. For example, when the smectite concentration is as low as several weight%, the amount of the softening agent increases. Not only is there a practical problem but it is not economical. However, if the concentration is further increased, the dispersion usually gels and the fluidity decreases,
In some cases, it hardens and is not only difficult to handle at the time of use, but also hard to disperse even when added to water, does not uniformly adsorb to the fiber, and there is also a performance problem that the effect of imparting flexibility cannot be sufficiently obtained. Not preferred.

[0004] On the other hand, the softener in powder form does not contain water, the container is light and convenient to carry, and it is economical because a single use amount is small. However, when used in the state of fine powder, dust is generated when the softener is used, and therefore, it is usually used after granulation.

However, smectite has a strong hydration power and exhibits water swelling properties. Therefore, when granulated, it is so-called "mamako" that when it is put into water, only the surface of the particles turns into water-absorbing gel in water and water does not penetrate to the inside. As a result, there is a disadvantage that the dispersibility is remarkably reduced, a sufficient amount of adsorption is not obtained at the time of rinsing, and the effect of imparting flexibility is extremely inferior to that of the organic softener. Further, as a result, if the mechanical force at the time of washing and rinsing is weak, the granulated substance becomes a large gel-like substance and remains on the clothes even after the rinsing, causing so-called cloth adhesion, causing stains or stains after drying, which is not preferable. .

Therefore, as a method for improving the dispersibility of such smectite, a method of adding aluminum sulfate or sodium sulfate is known (Japanese Patent Application Laid-Open No. 53-9 / 1983).
No. 4695 and No. 61-130398).

On the other hand, for example, when an automatic washing machine is used, washing is performed for 10 minutes, dehydration is performed, then, rinsing is performed once with the same amount of water as in the case of washing, and after dehydration, a second rinsing is performed. However, the same amount of water as in the first rinse is added, and at the same time, a softener is added to perform a rinsing process. At this time, since the time used for the rinsing treatment is as short as 3 minutes at the longest, when the softener is powder, it is completely dispersed within 1 minute, preferably several tens of seconds, and the remaining time is sufficient. Preferably, adsorption to the fibers takes place.

However, the above-mentioned method of adding aluminum sulfate or sodium sulfate cannot be dispersed in such a short time. Not yet obtained. For this reason, when smectite is used as a softener, smectite is not sufficiently adsorbed to fibers within a predetermined rinsing time, and not only excellent flexibility is not obtained, but also coarse particles that cannot be completely dispersed , Which is a so-called cloth adhesion and contaminates the fiber.

[0009]

SUMMARY OF THE INVENTION Accordingly, the present invention provides a granular fiber softening composition which disperses in water very quickly even under low mechanical force, has a high adsorptivity to cloth, and has a high softening effect. And a method of manufacturing the same.

[0010]

Means for Solving the Problems and Embodiments of the Invention The present inventors have conducted intensive studies in order to achieve the above object, and as a result, surprisingly, a fine amount of smectite was added to a specific amount of a water-soluble phosphate. Granules having a constant moisture content obtained by granulating the powder with water as a binder can be used in water even under low mechanical force.
By dispersing within minutes, or even more surprisingly, by using a water-soluble phosphate and magnesium sulfate together,
It has been found that the amount of adsorption to the fiber is increased without impairing the dispersibility of the granulated material, and the flexibility is improved. Further, they have found that blending a powder of a higher fatty acid salt with the granules further improves the effect of imparting flexibility to fibers, and has completed the present invention.

That is, the present invention relates to [I] smectite 30
~ 95% by weight, magnesium sulfate 0.1 ~ 50% by weight,
Binder 0.1 to 50 containing water-soluble phosphate as a main component
It is a granulated granule containing 0.5% to 25% by weight of water and 0.5 to 25% by weight of water, wherein 80% by weight or more of the granulated product contains particles having a particle size of 250 to 2000 μm of a JIS standard sieve. Granular fiber softening composition, [II] having 12 to 12 carbon atoms
24. A composition as described in [I] above, wherein the powder of a higher fatty acid salt is blended with a water-soluble phosphate and magnesium sulfate in smectite containing at least 80% by weight of particles having a particle size of 210 μ or less according to a JIS standard sieve. Each of 0.1 to 60 parts by weight of a water-soluble phosphate and magnesium sulfate aqueous solution was added to 100 parts by weight of smectite to obtain a water-soluble phosphate and magnesium sulfate 0.1 to 100 parts by weight, respectively.
Spray at a rate of 100 parts by weight so that at least 8
Granulate until 0% by weight or more becomes particles having a particle size of 250 to 2000 µ of a JIS standard sieve.
(I) a method for producing a granular fiber softening composition according to the above (I), wherein the smectite and the sulfuric acid contain at least 80% by weight of particles having a particle size of 210 μ or less of a JIS standard sieve. To a mixed powder with magnesium, a water-soluble phosphate aqueous solution having a water-soluble phosphate concentration of 0.1 to 60 parts by weight, and a water-soluble phosphate aqueous solution of 0.1 to 100 parts by weight per 100 parts by weight of smectite. Sprayed at a rate of at least 80% by weight of the granulated material is granulated to particles having a particle size of 250 to 2000 μ of a JIS standard sieve,
Then, the method for producing a granular fiber softening composition according to the above [I], wherein the moisture is dried to 0.5 to 25% by weight, and [V] the method according to the above [III] or [IV]. In the production method, a method for producing a granular fiber softening composition is provided in which powder of a higher fatty acid salt having 12 to 24 carbon atoms is powder-blended with granules having a water content of 0.5 to 25% by weight dried.

Hereinafter, the present invention will be described in detail. The granular fiber softening composition of the present invention is a granulated product of smectite powder bound by a binder, in a granular form free of dust generation and having good fluidity, and added to the fibers during washing and rinsing to increase the flexibility of the fibers. It has the effect of giving.

The granular fiber softening composition of the present invention contains smectite for imparting flexibility to fibers as an essential component in the composition in an amount of 30 to 95% by weight, preferably 60 to 90% by weight. If the amount of smectite is less than 30% by weight, the effect of imparting flexibility is inferior. If the amount is more than 95% by weight, granules having a desired particle size cannot be obtained during granulation.

The smectite used in the present invention includes montmorillonite, beidellite, nontronite, saponite, hectorite, sauconite, and stevensite. These clay minerals have exchangeable ions with water molecules between the layers and exhibit properties different from other clay minerals, such as forming an organic complex and swelling ability. Such smectites, which are produced from nature, include, for example, those containing montmorillonite. Bond, Dresser Mineral, Inc. contains Yellowstone, etc., and contains Saponite.
V, Vegum F, Vegum K and the like, and hectorite-containing products such as Hectorable AW, Hectorable 200 and Benton EW from American Colloid Co., and Macaroid from National Reed are commercially available. Various types of synthetic smectites are also sold, such as Ionite H from Mizusawa Chemical Industries, SWN and SAN from Corp Chemical Co., and Laponite from Laporte Industries.

Further, as the smectite of the present invention, an alkali-treated acid clay can be used. Acid clay usually has a pH of 1% by weight aqueous solution dispersion of 5 to 6 or less,
The swelling degree is 10 ml / 2 g or less, and the content of SiO ₂ and Al ₂ O ₃ is SiO ₂ / Al ₂ O ₃ = 6 to 10 in molar ratio. Examples of this include acid clay from Niigata Prefecture Nakajo, Kodo, Kamikatani, Itoigawa, Mizusawa from Yamagata Prefecture, Kawasaki, Matsune, Kamikatani, Mikawa, Ome, and acid clay from Kamisami. British Fu showing similar properties to these acid clays
ller's earth, Florida from USA
earth, Warkel erde from Germany and the like. The exchangeable cations present in the acid clay include hydrogen ions, sodium ions, potassium ions, magnesium ions, calcium ions, iron ions and the like. These acid clays can be treated in the same manner as the above clay minerals by alkali treatment.

The salts of smectite include sodium,
Alkali metal salts such as potassium, alkaline earth metal salts such as magnesium and calcium, zinc salts, silver salts, aluminum salts, alkanolamine salts such as monoethanolamine, diethanolamine and triethanolamine, and basic amino acids such as lysine and arginine And the like.
One or more of these may be used as needed.

The smectite used in the present invention is a powdered smectite, and is preferably finely pulverized containing particles having a particle size of 210 μm when sieved with a JIS standard sieve at 80% by weight or more, particularly 90% by weight or more. Powdered smectite comprising crushed particles.

Further, another preferred smectite powder contains 80% by weight or more, particularly 90% by weight or more, of a powder obtained by spray-drying the smectite dispersion and having a particle size distribution of 105 μm or less according to a JIS standard sieve. And powdered smectite.

The granular fiber softening composition of the present invention contains magnesium sulfate as a main component as an adsorption aid having an effect of improving smectite adsorption to fibers, and contains 0.1 to 50% by weight of the composition. %, Preferably 1 to 30% by weight
contains. When the amount of magnesium sulfate is less than 0.1% by weight, the effect of improving the adsorptivity is inferior. When the amount is more than 50% by weight, the amount of magnesium sulfate remaining in the fibers increases, and the feeling after use is undesirably reduced.

The magnesium sulfate used in the present invention is preferably an anhydride or a heptahydrate.

In a preferred embodiment of the magnesium sulfate used in the present invention, the weight ratio of smectite to magnesium sulfate is from 100: 0.1 to 100: 10 as a powder.
0, preferably 100: 1 to 100: 50, and the resulting smectite powder is mixed with the smectite powder to obtain particles having a particle size of 210 μ or less, preferably when sieved with a JIS standard sieve. 80% by weight or more, especially 9
0% by weight or more is contained.

In another preferred embodiment, the weight ratio of smectite to magnesium sulfate is 100: 0.1-10.
The aqueous dispersion obtained by mixing the solutions so as to have a ratio of 0: 100, preferably 100: 1 to 100: 50 is spray-dried. %, Particularly 90% by weight or more.

In order to granulate the granular fiber softening composition of the present invention, a water-soluble phosphate is used as a binder as an essential component, and 0.1 to 50% by weight, preferably 1 to 50% by weight of the composition.
-30% by weight. When the amount of the water-soluble phosphate is 0.
If it is less than 1% by weight, a granulated product having a desired particle size distribution cannot be obtained. If the content is more than 50% by weight, the amount of phosphate remaining on the fiber increases, and the feel after use decreases, which is not preferable.

The phosphate used in the present invention may be a primary alkali metal phosphate or alkanolamine salt such as monosodium dihydrogen phosphate and monopotassium dihydrogen phosphate, disodium monohydrogen phosphate, monohydrogen phosphate. Examples thereof include secondary alkali metal phosphates or alkanolamine salts such as dipotassium and sodium potassium monohydrogenphosphate, and alkali metal pyrophosphates or alkanolamine salts such as sodium pyrophosphate and potassium pyrophosphate.

The binder used in the present invention is used as an aqueous solution of a phosphate, and the concentration of the phosphate in the aqueous solution is preferably 0.1 to 60% by weight, particularly preferably 5 to 50% by weight.

Another binder used in the present invention is a mixed binder of phosphate and magnesium sulfate. The amounts of phosphate and magnesium sulfate contained in the binder are each 0 to 100 parts by weight of smectite. 0.1 to 100 parts by weight, particularly preferably 1 to 30 parts by weight. When the amount of the binder is less than 0.1 part by weight, the granulation property becomes insufficient, which is not preferable. The binder is used as an aqueous solution of phosphate and magnesium sulfate, and the concentration of phosphate and magnesium sulfate in the aqueous solution is preferably 0.1 to 60% by weight, and particularly preferably 5 to 50% by weight.

Further, the granular fiber softening composition of the present invention contains 0.5 to 30% by weight, preferably 1 to 25% by weight of water in the composition. The water in the composition is brought in from the raw material smectite or the aqueous binder solution and removed in the drying step after granulation, but when the residual moisture is removed to less than 0.5% by weight, the granular composition is dispersed in water. Is significantly reduced, which is not preferable.

The granulated fiber softening composition of the present invention is a granulated granule containing smectite, magnesium sulfate and a water-soluble phosphate as essential components, and the granulated granule is preferably at least 80% by weight, preferably at least 80% by weight. Is 90% by weight or more containing particles having a particle size of 250 to 2000 µ, preferably 500 to 2000 µ of a JIS standard sieve. If particles having a particle size of less than 250 μm are contained in an amount of 20% by weight or more, dust is generated during use, which is not preferable. If the content of particles exceeding 2000 μm is 20% by weight or more, it takes time to disperse the particles in water, and excellent flexibility cannot be obtained.

The granular fiber softening composition of the present invention is more preferably added with a powder of a higher fatty acid salt as an optional component to the granulated product, since the effect of imparting flexibility to fibers is improved.

The higher fatty acid salt used in the present invention must have 12 to 24 carbon atoms. If the carbon number is out of this range, the effect of softening the fiber becomes insufficient. Preferred higher fatty acids have 18 to 24 carbon atoms. This higher fatty acid may be any of a natural product and a synthetic product, may be a saturated compound or an unsaturated compound, and may have a linear or branched alkyl chain. Good. Furthermore, this higher fatty acid may be used alone or as a mixture of two or more.

Examples of such higher fatty acids include saturated or unsaturated linear fatty acids such as myristic acid, palmitic acid, oleic acid, stearic acid, and behenic acid, and mixtures thereof, specifically, coconut fatty acids, Tallow acid, hydrogenated tallow acid, palm fatty acid and the like can be mentioned.
In addition, an acid of a synthetic intermediate having an odd or even carbon number can also be used.

Further, examples of the salt include an alkali metal salt, an alkaline earth metal salt, an aluminum salt, a zinc salt and the like. Among them, a sodium salt and a potassium salt are particularly preferable.

In the present invention, the higher fatty acid salt is
They may be used alone or in combination of two or more.

The higher fatty acid salt used in the present invention is added in an amount of 100 parts by weight or less, preferably 0.1 to 50 parts by weight, more preferably 1 to 40 parts by weight, based on 100 parts by weight of smectite.

The higher fatty acid salt is in the form of a powder, preferably 210 μm or less, more preferably 1 μm or less, according to a JIS standard sieve.
It has a particle size distribution containing at least 80% by weight, particularly 90% by weight or more, of particles having a particle size of 05 μ or less.

The granular fiber softening composition of the present invention may contain, if necessary, a coloring agent such as a fragrance, a pigment or a dye, a small amount of an electrolyte salt or a fine powder such as white carbon or pearlite.

The granular fiber softening composition of the present invention is produced as follows. That is, 210μ of JIS standard sieve
A smectite powder containing at least 80% by weight of particles having the following particle sizes is placed in a continuous or batch type granulator such as a rotary drum or a fluidized bed, and a water-soluble phosphate and magnesium sulfate are each added thereto in an amount of 0.1 to 60%. The aqueous solution of the binder in which the weight percent is dissolved is sprayed so that the spray amount of the water-soluble phosphate and magnesium sulfate is 0.1 to 100 parts by weight with respect to 100 parts by weight of smectite. % Is 25 or more of JIS standard sieve
It is manufactured by granulating to particles having a particle size of 0 to 2000 μ and then drying the water to 0.5 to 25% by weight.

Alternatively, when the smectite powder contains magnesium sulfate, such as spray-dried particles obtained by spray-drying an aqueous dispersion of a mixture of smectite and magnesium sulfate, or a powder mixture of smectite and magnesium sulfate, etc. In the case of a mixed powder of smectite and magnesium sulfate, it can be obtained by granulation as described above using a single aqueous solution of a phosphate. In this case, the mixed powder of smectite and magnesium sulfate may be granulated in the same manner using a mixed aqueous solution of phosphate and magnesium sulfate, but the content of magnesium sulfate in the obtained granulated product may be acceptable. Must be within the above-mentioned range.

Further, when a higher fatty acid salt is added, the higher fatty acid salt can be compounded by powder mixing with the obtained granules.

[0040]

According to the granular fiber softening composition of the present invention, a powder containing smectite and magnesium sulfate is granulated with a binder containing phosphate as a main component, and at least 80% by weight of the whole is JIS. 250-20 of standard sieve
By adjusting to particles with a particle size of 00μ, no dust is generated even in a powder type, dispersibility in water is extremely fast, smectite adsorption to fibers is improved, and flexibility is quick, and a granular softener is obtained. Is obtained.

[0041]

EXAMPLES The present invention will be described below in detail with reference to Examples and Comparative Examples, but the present invention is not limited to the following Examples.

Examples (1) Smectite granulation method A: Rolling granulation method A granulated raw material is placed in a rotating drum having a diameter of 30 cm, a length of 40 cm and a closed bottom, and is rotated at 50 rpm. The binder aqueous solution was sprayed while turning. The concentration of each aqueous solution was successively adjusted by the amount of the inorganic electrolyte or the like added.

Next, the granulated product was dried to a moisture content of 8% with a dryer at 105 ° C.
After passing through 0 mm, a granulated product of 250 to 2000 μ was collected. Granules smaller than 250μ are returned to the rotating drum,
Granules larger than 000μ are crushed by a crusher and
It was adjusted to a granule of 00μ.

If necessary, a predetermined amount of soap powder was powder-blended with the granules to produce smectite granules.

Method B: Fluidized bed granulation method PUVIS BAS manufactured by Yamato Scientific as a fluidized bed granulator
Using IC UNIT MODEL GB-21, heated air at 160 ° C. was sent from the bottom of the tower to fluidize the smectite powder shown in Table 1, and an aqueous solution of a binder was sprayed from a nozzle at the top of the tower. The concentration of the aqueous solution was successively adjusted by the amounts of phosphate and magnesium sulfate added. Granulation 10
Minutes, the water content after drying for 10 minutes is about 3%,
Subsequent operations were performed in the same manner as in the case of the tumbling granulation method.

(2) Manufacture of Soap Powder Smile Co., Ltd. Washing powder soap (pure soap content: 9
7%) was passed through a crusher, and then passed through a JIS sieve having a mesh size of 45 μ to collect and use fine powder having a particle size of 45 μ or less.

(3) Dispersibility evaluation method A household mini-mini washing machine “Matsushita Electric Industrial Co., Ltd., electric washing machine NA-33” was used, and 5 ° C. tap water was added to the washing machine.
1 liter, add 1.00 g of smectite granules, add 1
Stirred for minutes. Thereafter, the entire amount is drained, and the undispersed smectite particles drained from the drain outlet are subjected to a 250 μm JIS mesh opening.
And undispersed smectite particles were collected on the sieve. After drying, the weight was measured and the dispersibility was evaluated from the following equation. Dispersibility (%) = [(Amount of granulated material added (g) -Amount of smectite granulated on screen (g)] / Amount of granulated material added (g)] × 100

(4) Flexibility evaluation method A predetermined amount of a sample and pretreated cotton were placed in a household mini-mini washing machine “Matsushita Electric Industrial Co., Ltd., Electric Washing Machine NA-33” filled with 5 liters of tap water. Two towels (about 170 g) were added with stirring, and the mixture was stirred for 3 minutes and rinsed. After the treatment, the cotton towel is dehydrated for 2 minutes and then naturally dried.
Further, the humidity was adjusted in a constant temperature and humidity room at 25 ° C. and 60% RH for one day. The evaluation is sensory, and cotton towels treated with tap water only
Cotton towels treated with a standard softener “Soft & Dry” manufactured by Lion Corporation with a standard usage amount were evaluated as 4 points.

The pretreatment of the cotton towel was carried out in a household 2-tub washing machine using 25 g of a detergent "Lion Co., Ltd., High Top".
After washing 12 sheets of unbleached cotton towels (approximately 1 kg) with 30 liters of 50 ° C tap water for 15 minutes and dehydrating for 5 minutes, washing and dehydrating again under the same conditions,
The operation was repeated six times using tap water as it was for 15 minutes for rinsing and 5 minutes for dehydration, followed by natural drying.

(5) Amount of Smectite Adsorbed on Cotton Towel A predetermined amount of a sample was placed in a household mini-mini washing machine “Matsushita Electric Industrial Co., Ltd., electric washing machine NA-33” filled with 5 liters of tap water. Two pretreated cotton towels (about 170 g) were added with stirring, and the mixture was stirred for 3 minutes and rinsed.
The cotton towel after the treatment was dehydrated for 2 minutes and then air-dried.

The crucible made constant at 800 ° C. was precisely weighed. A few grams of the dried cotton towel was cut into the crucible, dried at 130 ° C. for 5 hours, cooled in a desiccator, and precisely weighed. The difference between the two was determined, and the absolute dryness W1 (g) of the sampled towel was determined.

After determining the absolute dry amount, the crucible is put into a degreasing furnace,
The temperature was raised from 25 ° C. to 500 ° C. at a temperature rising rate of 20 ° C./hr, and then kept at 500 ° C. for 20 hours to ash the towel. Thereafter, the crucible was transferred to an electric furnace and baked at 800 ° C. for 2 hours to completely incinerate. The crucible cooled to room temperature in a desiccator was weighed, and the burning residue W2 (g) was determined. Separately, a towel rinsed with water alone was used as a blank, and the absolute dry amount B1 (g) and the burning residue at 800 ° C. B2 (g) were determined. The amount of smectite adsorbed on cotton towels is W1 and W
2 and B1 and B2, and were determined by the following equation. Adsorption amount (p
pm) = [(W2 / W1)-(B2 / B1)] × 10 ⁶
In Examples of the present invention, smectite powders shown in Tables 1 and 2 were used.

[0053]

[Table 1]

[0054]

[Table 2]

[0055]

[Table 3]

[Examples 1 to 9, Comparative Examples 1 to 4] As shown in Table 4, the particle size distribution was adjusted and rolling granulation was performed to obtain the smectite powder shown in Table 1 or the same as the magnesium sulfate shown in Table 3 Was granulated while spraying an aqueous binder solution to obtain a granulated product. Next, it was dried in a thermostat at 100 ° C. to a desired amount of water and, if necessary, sieved to obtain a desired particle size distribution to produce a granular fiber softening composition. The sample of Comparative Example 1 was formed by extrusion granulation.

Next, the dispersibility of these granular fiber softening compositions in water, the amount adsorbed on fibers, and the effect of imparting flexibility were evaluated. Table 4 shows the results.

In each of the examples of the present invention, the dispersibility in water was excellent, the amount of adsorption was high, and the flexibility of the rinsed fiber was excellent.

[0059]

[Table 4]

[Examples 10 and 11] Spray-dried smectite powder having a particle size distribution as shown in Table 2 by rolling granulation by adjusting the particle size distribution as shown in Table 5 and magnesium sulfate as shown in Table 3 Was granulated while spraying an aqueous binder solution to obtain a granulated product. Next, it was dried in a thermostat at 100 ° C. to a desired amount of water and, if necessary, sieved to obtain a desired particle size distribution to produce a granular fiber softening composition.

Next, the dispersibility of these granular fiber softening compositions in water, the amount adsorbed on fibers, and the effect of imparting flexibility were evaluated. Table 5 shows the results.

In each of the examples of the present invention, the dispersibility in water was excellent, the amount of adsorption was high, and the flexibility of the rinsed fiber was excellent.

[0063]

[Table 5]

Example 12 100 g of a soap powder having a particle size distribution as shown in Table 3 was added to 1 kg of the granulated granules obtained in Example 10, and mixed well to perform powder blending. A granular fiber softening composition was produced.

Next, the dispersibility of the granules in water, the amount of adsorption to fibers, and the effect of imparting flexibility were evaluated.

As a result, it was quickly dispersed in water, and the dispersibility was excellent at 100%. Adsorption amount to fiber is 2300pp
m, and the flexibility was excellent at 3.5.

Comparative Example 5 A dispersion having the same composition as the smectite powder of the granular fiber softening composition obtained in Example 12, ie, 225 g of Kunipia F, was dispersed in 9000 g of water. A solution prepared by dissolving 22.5 g of soap in 900 g of water was added to the smectite dispersion, and then 37.5 g of a 40% aqueous solution of magnesium sulfate was further added, followed by stirring well to prepare a uniform dispersion. This dispersion was spray-dried to obtain 250 g of powder. This powder is all J
It passed through 45μ of an IS standard sieve.

Using 200 g of this powder, the concentration of phosphate and magnesium sulfate was adjusted so as to obtain a composition similar to that of Example 10, and the powder was granulated to obtain a granular fiber softening composition having a water content of 5% by weight. Was manufactured. This granular fiber softening composition had a content of particles having a particle size of 250 to 2000 μm of a JIS standard sieve of 95% by weight.

Next, the dispersibility of the granules in water, the amount of adsorption to fibers, and the effect of imparting flexibility were evaluated.

As a result, when this granulated material is dispersed in water, an insoluble film or cage is formed on the surface, and the dispersibility is 50%.
It turned out bad. The amount of adsorption is 1300 ppm
And the flexibility was poor at two points, and the soap solution mixing method was inferior to the powder blending method of the example.

Claims (5)

[Claims] 1. Smectite 30 to 95% by weight, magnesium sulfate 0.1 to 50% by weight, water-soluble phosphate-based binder 0.1 to 50% by weight, moisture 0.5 to 50%
A granular fiber softening composition comprising 25% by weight of granules, wherein at least 80% by weight of the granules contains particles having a particle size of 250 to 2000 μm of a JIS standard sieve. . 2. The composition according to claim 1, wherein a powder of a higher fatty acid salt having 12 to 24 carbon atoms is blended. 3. A smectite containing at least 80% by weight of particles having a particle size of 210 μm or less according to a JIS standard sieve, wherein the water-soluble phosphate and the concentration of magnesium sulfate are each 0.1 to 60 parts by weight. And an aqueous solution of magnesium sulfate, with respect to 100 parts by weight of smectite, a water-soluble phosphate and magnesium sulfate 0.1 to 100, respectively.
Spray at a ratio of parts by weight to granulate until at least 80% by weight or more of the granulated product becomes particles having a particle size of 250 to 2000 μm of a JIS standard sieve, and then water is added to 0.5 to 25% by weight.
The method for producing a granular fiber softening composition according to claim 1, wherein the composition is dried to a maximum. 4. A mixed powder of smectite and magnesium sulfate containing at least 80% by weight of particles having a particle size of 210 μm or less according to a JIS standard sieve and having a water-soluble phosphate concentration of 0.1 to 60 parts by weight. A phosphate aqueous solution was added to a water-soluble phosphate in an amount of 0.1 to 10 based on 100 parts by weight of smectite.
Sprayed at a rate of 0 parts by weight, granulated until at least 80% by weight or more of the granulated material becomes particles having a particle size of 250 to 2000 μ of a JIS standard sieve, and then dried to a moisture of 0.5 to 25% by weight. The method for producing a granular fiber softening composition according to claim 1, wherein 5. The method according to claim 3, wherein a powder of a higher fatty acid salt having 12 to 24 carbon atoms is powder-blended with granules having a water content of 0.5 to 25% by weight. A method for producing the composition.