JPH07268395A - Production of granular nonionic detergent composition - Google Patents

Abstract

PURPOSE:To obtain a granular nonionic detergent composition prevented from exuding a nonionic surfactant. CONSTITUTION:This granular nonionic detergent composition is produced by uniformly kneading and mixing (a) 10-70wt.% of a nonionic surfactant with (b) 5-50wt.% of a crystalline alumino-silicate, (c) >=0.2wt.% and <5wt.% of porous inorganic oxide powder, (d) >=5wt.% and <75wt.% of sodium carbonate and (e) 0.1-5wt.% of an oil gelling agent to form a solid detergent, then adding inorganic fine powder as a pulverizing auxiliary to the solid detergent and pulverizing the solid detergent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for producing a granular detergent composition containing a nonionic surfactant as a main component, which causes less exudation of the nonionic surfactant from the product during storage.

[0002]

2. Description of the Related Art Nonionic surfactants generally have a low foaming property, their detergency is hardly affected by the hardness of water, and they are particularly excellent in dirt dispersibility and stain dispersibility at low temperatures. Furthermore, it is an excellent surfactant with good biodegradability, low environmental load, low toxicity and no safety problem. Examples of the method for producing a granular detergent containing a nonionic surfactant as a main component include, for example, JP-A-52-101121 and JP-A-62-2632.
Various methods have been proposed in Japanese Patent Laid-Open No. 99, Japanese Patent Laid-Open No. 57-159898, and the like.

However, nonionic surfactants are generally liquid at room temperature, and there is a concern that the nonionic surfactant exudes from the nonionic granular detergent product into the detergent container. When the nonionic surfactant oozes out into the detergent container, the product appearance may be deteriorated, the detergency may be reduced due to the reduction of the nonionic surfactant in the container contact portion, and the fluidity of the detergent particles and the caking resistance may be adversely affected. is expected.

In Japanese Patent Laid-Open No. 339898/1992, 5-20% of an amorphous oil-absorbing carrier is blended to improve the exudation of a nonionic surfactant, but this component is powdery. Severely, when a large amount is mixed in a detergent, there is a problem that a large amount of dust is generated at the time of manufacturing and during use during washing, resulting in deterioration of workability and discomfort due to "sneezing".

[0005]

DISCLOSURE OF THE INVENTION The present invention aims to produce a granular nonionic detergent composition in which exudation is prevented.

[0006]

[Means for Solving the Problems] As a result of intensive studies on this problem, as a result of kneading and granulating nonionic surfactant, aluminosilicate, porous oxide powder and sodium carbonate, detergent particles are produced. At this time, the present invention has been completed by finding that the liquid nonionic surfactant is gelated by simultaneously adding a liquid amino acid oil gelling agent at the time of kneading, thereby solving the above-mentioned problem of exudation.

That is, in the method for producing the granular nonionic detergent composition of the present invention, the following components (a) to (e) are uniformly kneaded and mixed to form a solid detergent, and then a mineral detergent is used as a grinding aid. It is characterized in that fine powder is added and the solid detergent is crushed into powdery or granular detergent particles. (A) Nonionic surfactant: 10 to 70% by weight. (B) Crystalline aluminosilicate: 5 to 50% by weight. (C) Porous inorganic oxide powder: 0.2% by weight or more and less than 5% by weight. (D) Sodium carbonate: 5% by weight or more and less than 75% by weight (e) Oil gelling agent: 0.1 to 5% by weight.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Examples of the nonionic surfactant used in the present invention include the following. (1) C3-C22, preferably C8-C18 aliphatic alcohol with C2-C4 alkylene oxide on average 3
-30 mol, preferably 7-20 mol added polyoxyalkylene alkyl (or alkenyl) ether.
Among these, polyoxyethylene alkyl (or alkenyl) ether and polyoxyethylene polyoxypropylene alkyl (or alkenyl) ether are preferable. (2) Polyoxyethylene alkyl (or alkenyl) phenyl ether (3) General formula (I) of the following chemical formula 1 in which alkylene oxide is added between ester bonds of long-chain fatty acid alkyl ester
Fatty acid alkyl ester alkoxylate

[0009]

Embedded image R ₁ CO (OA) nOR ₂ ... (I) (R ₁ CO: 6 to 22 carbon atoms, preferably 10 to 18 fatty acid residue OA: _{2 to} 4 carbon atoms such as OCH ₂ CH ₂ ; Preferably 2
Addition unit of alkylene oxide of 3 n: shows the average addition mole number of alkylene oxide, 5
30, preferably a number of 7 to 20 R ₂ : a lower alkyl group having 1 to 3 carbon atoms)

(4) Polyoxyethylene sorbitan fatty acid ester (5) Polyoxyethylene sorbit fatty acid ester (6) Polyoxyethylene fatty acid ester (7) Polyoxyethylene hydrogenated castor oil (8) Glycerin fatty acid ester

Among the above nonionic surfactants, polyoxyethylene alkyl (or alkenyl) ethers,
A fatty acid methyl ester ethoxylate obtained by adding ethylene oxide to a fatty acid methyl ester is particularly preferably used.

The nonionic surfactant as the component (a) is 10
It is mixed and kneaded and mixed in an amount of ˜70 wt%, preferably 10˜60 wt%. If this amount is less than 10% by weight, the excellent cleaning properties of the nonionic surfactant cannot be utilized, while if it exceeds 70% by weight, the stickiness of the solid detergent obtained by kneading and mixing will remarkably increase. However, adhesion to the crusher occurs, making it difficult to carry out the present invention.

As the crystalline aluminosilicate as the component (b), synthetic zeolite having an average particle size of 0.1 to 10 μm is preferably used. The crystalline aluminosilicate as the component (b) is mixed and kneaded and mixed in an amount of 5 to 50% by weight, preferably 20 to 40% by weight. If the content is less than 5% by weight, the fluidity of the resulting detergent composition will be significantly reduced, while if it exceeds 50% by weight, the particle size of the resulting detergent composition will be too small and the dusting property will be deteriorated.

As the porous inorganic oxide powder as the component (c), one having a SiO ₂ content of 50% by weight or more is suitable, and amorphous silica (trade name: TOKUSIL (Tokuyama Soda),
Aerosil (Japan Aerosil), crystalline calcium silicate (trade name: Florite (Tokuyama Soda)), crystalline magnesium silicate (trade name: Wollastonite (Hayashi Kasei))
And so on. The porous inorganic oxide powder of the component (c) is 0.2% by weight or more and less than 5% by weight, preferably 1 to 4
It is compounded at the time of kneading in an amount of wt%. This blending amount is 0.2
If it is less than 5% by weight, the fluidity of the resulting detergent composition is remarkably reduced, while if it is 5% by weight or more, the particle size of the obtained detergent composition becomes too small and the dusting property deteriorates.

As the sodium carbonate as the component (d), heavy sodium carbonate having a high bulk density (trade name: granular ash (Asahi Kasei)), light sodium carbonate having a low bulk density (trade name: light ash (Asahi Kasei)), etc. However, a light material is particularly preferable. (D) component sodium carbonate is 5% by weight or more 75
It is blended at the time of kneading and mixing so that it is contained in an amount of less than wt%. When the blending amount is 75% by weight or more, the amount of fine powder of the obtained detergent composition increases and the dusting property deteriorates. Further, the sodium carbonate as the component (d) improves the fluidity of the detergent composition obtained by blending it in an amount of 5% by weight or more, and can prevent the detergent composition from adhering to the crusher. The component (d), sodium carbonate, is preferably added in an amount of 10 to 50% by weight.

Specific examples of the oil gelling agent as the component (e) include derivatives of N-acyl amino acid amides, esters, amine salts and the like, for example, N-lauroyl glutamic acid dibutyl amide, dicaproyl lysine lauryl amide, dicaproic acid. Illyurine lauryl ester, etc.
-Hydroxystearic acid, metallic soap, dibenzylidene sorbitol, block copolymers composed of polystyrene blocks and polybutadiene blocks, and polynorbornene can also be used.

The oil gelling agent as the component (e) is blended in an amount of 0.1 to 5% by weight, preferably 0.5 to 2% by weight. If the amount is less than 0.1% by weight, the exudation preventing effect of the nonionic surfactant is low. On the other hand, if the amount is more than 5% by weight, the solid detergent obtained by kneading and mixing becomes a slurry, which makes pulverization difficult. Become.

In the granular nonionic detergent composition of the present invention,
The following ingredients that are usually blended in detergent raw materials can be blended, and these may be blended in the solid detergent at the time of kneading and mixing, and the detergent particles obtained by crushing the solid detergent can be powdered. You may mix.

(1) Inorganic alkali builder: potassium carbonate, sodium sulfite, sodium silicate, etc. (2) Fluorescent agent: bis (triazinylamino) stilbenedisulfonic acid derivative, bis (sulfostyryl) biphenyl salt [Tinopearl CBS], etc. (3) Enzyme: lipase, protease, cellulase, amylase, etc. (4) Bleach: Percarbonate such as sodium percarbonate, perborate, etc. (5) Antistatic agent: dialkyl type quaternary ammonium salt,
Tertiary amines, etc. (6) Surface modifiers: bentonite, kaolinite, etc. (7) Anionic surfactants: α-olefin sulfonates, linear alkylbenzene sulfonates, α-sulfo fatty acid methyl ester salts, etc.

In the present invention, (a) a nonionic surfactant as an essential component, (b) a crystalline aluminosilicate as a component,
The porous inorganic oxide powder of component (c), sodium carbonate of component (d) and the oil gelling agent of component (e), or other optional components are charged into a kneader or the like and uniformly kneaded. Mix to obtain a solid detergent as an intimate knead. As described above, by simultaneously adding the gelling agent to the components (a), (b), (c) and (d) and kneading, the nonionic surfactant of the component (a) which is originally liquid However, the resulting kneaded product (solid detergent) is gelled and uniformly dispersed, and the exudation of the nonionic surfactant is prevented.

Then, an inorganic fine powder is added to the obtained solid detergent as a grinding aid and crushed to obtain an average particle size of 300 to 30.
Granular or granular detergent particles having a particle size of 00 μm are obtained, and if necessary, other optional components are externally added by powder mixing or the like to obtain the final granular nonionic detergent composition of the present invention.

As the grinding aid, an inorganic powder having a JIS 200 mesh sieve passing amount of 50% or more is suitable, and as the material, for example, carbonates such as sodium carbonate and calcium carbonate, amorphous silica. , Silicates such as calcium silicate and magnesium silicate, and aluminosilicates such as zeolite are used.

The grinding aid is added in the composition of the present invention in an amount of 0.5 to 0.5.
It is preferably used in an amount of 15% by weight, and more preferably 1 to 10% by weight. Sodium carbonate, other detergent granules, etc. can be after-blended with the granular nonionic detergent composition of the present invention.

[0024]

According to the present invention, a nonionic surfactant,
Prevents exudation of nonionic surfactant by kneading and crushing granulation by adding oil gelling agent at the same time when kneading and mixing crystalline aluminosilicate, porous inorganic compound powder and sodium carbonate A granular nonionic detergent composition is obtained.

[0025]

EXAMPLES In the examples, each sample was evaluated by the following test methods. [Bleeding test] Coated cardboard (350 g /
m ² ), wax sand paper (30 g / m ² ), and kraft pulp paper (70 g / m ² ), a three-layer paper box having a length of 15 cm, a width of 9.3 cm, and a height of 18.5 cm. did. Put 1.5 kg of sample in this box,
After storing in a thermo-hygrostat chamber of% RH for 40 days, all the detergents were taken out, and the degree of seeping out of the contact portion with the detergent inside the box was visually evaluated according to the following criteria. ○: No bleeding is observed △: Some bleeding is recognized ×: Many bleeding is recognized

Examples 1 to 3 Granular nonionic detergent compositions were produced according to the production method of the present invention (this method). The amounts of nonionic surfactant, finely divided synthetic zeolite, porous inorganic powder, sodium carbonate, oil gelling agent and fluorescent agent shown in Table 1 were simultaneously charged into a continuous kneader (KRC2 type manufactured by Kurimoto Iron Works Co., Ltd.). The mixture was kneaded and mixed to obtain a kneaded product (solid detergent).

Then, the obtained kneaded product and 5% by weight of zeolite as a grinding aid were used, and the hole diameter of the screen was 15 mm.
7 mm, 4 mm fish mill (DKASO6 type manufactured by Hosokawa Micron Co., Ltd.) was put into 3 stages and crushed to obtain detergent particles (average particle size: 500 μm), and further enzyme powder was mixed, and a fragrance was sprayed to the present invention. A granular nonionic detergent composition was obtained. The oozing of these detergent compositions was evaluated, and the results are shown in Table 1 below together with the evaluation results of the following comparative examples.

Comparative Example A granular nonionic detergent composition of a comparative example was prepared according to the following method (comparative method). The amount of the powder raw material shown in Table 1 was put into a Ledige mixer (M-20 type manufactured by Matsuzaka Giken Co., Ltd.), and the main shaft (200 rpm) and the chopper (6000 rp).
The stirring of m) was started. A mixture of the nonionic surfactant shown in Table 1, an oil gelling agent and water was added thereto and granulated until an average particle size of 400 μm was obtained to obtain a granular nonionic detergent composition of Comparative Example. Table 1 shows the results of the oozing test of the nonionic surfactant for this detergent composition. The above results are shown in Table 1 below.

[0029]

[Table 1]Table 1: Detergent composition and evaluation results Example Example Example Comparative example Comparative example Comparative example 1 2 3 1 2 3 Composition (% by weight): (a) Nonionic surfactant AE nonion-1 25 − − 25 − − AE nonion − 2 − 40 − − 40 − FME nonion − 1 − − 60 − − 60 (b) Fine zeolite 25 30 20 25 30 20 (c) Porous inorganic powder Amorphous silica 2 2− 2 2− Crystalline silicate Ca−− 2−− 2 (d) Sodium carbonate 40 20 10 40 21 10 (e) Oil gelling agent Gelling agent-1 1 1 1 --- Gelting agent-2 -------- 1 Gelling agent-3 --- 1 ----- Grinding aid 5 5 5 5 5 5 Minor ingredients 1 1 1 1 1 1 Manufacturing method This method This method This method Comparative method Comparative method Comparative method Evaluation results:Exudation ○ ○ ○ △ × △ (Note) AE Nonion-1: Saturated aliphatic alcohol having 12 to 15 carbon atoms
Cole's ethylene oxide average 9 mole addition product (Lion
Chemicals Co., Ltd., Dovanox 25I) AE nonion-2: saturated aliphatic al having 12 to 15 carbon atoms
Cole's ethylene oxide average 8 mol adduct (Lion
Chemicals Co., Ltd., Dovanox 25H) FME Nonion-2: C₁₁H_{twenty three}CO (OCH₂CH₂)₉
OCH₃(Lion Chemical Co., Ltd., fatty acid methyl etoki
Sylate) Gelling agent-1: N-lauroyl glutamate dibutyla
Mido (GP-1 manufactured by Ajinomoto Co., Inc.) Gelling agent-2: 12-hydroxystearic acid (Kawakenfu
Fine Chemicals Co., Ltd., R grade) Gelling agent-3: polystyrene block and polybutadiene
A block copolymer composed of a block and polynorborne
Mixture with Nene (KF Trading Co., Ltd., KF-
1) Fine-grained zeolite: Shilton B (manufactured by Tokuyama Soda Co., Ltd.) Amorphous silica: Tokseal N (manufactured by Tokuyama Soda Co., Ltd.) Crystalline Ca: Fluorite RC (Tokuyama Soda Co., Ltd.)
Made), crystalline calcium silicate

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Claims (1)

[Claims] 1. The following components (a) to (e) are uniformly kneaded and mixed to form a solid detergent, and then inorganic fine powder is added as a grinding aid, and the solid detergent is crushed to produce a powder. A method for producing a granular nonionic detergent composition, which comprises granular or granular detergent particles. (A) Nonionic surfactant: 10 to 70% by weight (b) Crystalline aluminosilicate: 5 to 50% by weight (c) Porous inorganic oxide powder: 0.2% by weight or more and less than 5% by weight (d ) Sodium carbonate: 5% by weight or more and less than 75% by weight (e) Oil gelling agent: 0.1-5% by weight