JPH09100497A - Production of high-bulk density detergent composition - Google Patents

Abstract

PROBLEM TO BE SOLVED: To efficiently obtain a detergent composition without green detergent adherence to the apparatus and screens, etc., by incorporating a green detergent with a specific iminodisuccinic acid salt (derivative) followed by crushing the blend and then granular size trimming using an inorganic builder as auxiliary. SOLUTION: (A) A green detergent is incorporated with (B) 3-20wt.%, based on the component A, of a compound of the formula (X is a counterion; Y is H or OH) (e.g. sodium hydroxyiminodisuccinate) followed by crushing the blend and theta granular size trimming using (C) inorganic builder powder (e.g. sodium carbonate powder, zeolite powder) as auxiliary. It is preferable that the amount of the component C to be used is 5-20wt.% based on the component A.

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 high bulk density detergent composition, and more particularly, a method for producing a high bulk density detergent composition which reduces adhesion to a screen such as a crusher during production. Regarding

[0002]

2. Description of the Related Art Compaction by a high bulk density detergent occupies the mainstream of present detergents, but the method for producing the detergent is to compact and crush the detergent dough, or granulate by stirring and mixing. Both methods involve crushing and sizing steps, in which case there is a problem with the equipment and screen. For such problems, a method of using an inorganic builder powder as an auxiliary agent is used in the crushing and sizing process for the purpose of preventing adhesion. As the inorganic builder powder used as an auxiliary agent in the pulverizing and sizing process, zeolite, sodium carbonate, etc. are used because of the effect of the auxiliary agent.

[0003]

However, when the amount of the auxiliary agent is increased, the adhesion to the apparatus or screen is improved, but the auxiliary agent portion occupies a large amount in the detergent, which causes deterioration of fluidity due to fine powder particles. Becomes Therefore, it is the present situation that the amount of auxiliary agent in the crushing and sizing process finds a compromise point in terms of adhesion and fluidity to these devices and screens, and a method that can solve any of the problems awaited. It was Therefore, the present invention is a crushing granulation of detergent cloth,
An object of the present invention is to prevent the detergent dough from adhering to an apparatus, a screen or the like when producing a high bulk density detergent through a granulation step such as stirring granulation.

[0004]

Means for Solving the Problems As a result of intensive studies to solve the above-mentioned problems, the present inventors have unexpectedly found that by incorporating a specific organic chelating agent into a detergent dough, an inorganic builder powder can be obtained. When used in the crushing and sizing process,
The present invention has been completed by finding that a detergent composition having improved fluidity and improved adhesion to a device / screen can be obtained. That is, the method for producing a high-bulk density detergent composition of the present invention is a method for producing a high-bulk density detergent by crushing or sizing a detergent dough and using an inorganic builder as an auxiliary agent in the crushing and sizing step. In the general formula I
The iminodisuccinate or its derivative represented by
It is characterized by being mixed with 20% by weight of detergent cloth.

[0005]

Embedded image (X: counter ion, Y: OH or H)

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION In the present invention, a high bulk density detergent is produced by granulating a detergent dough by compaction / crushing granulation or stirring granulation. An inorganic builder is used as an auxiliary agent in the crushing or sizing step during granulation. As the detergent cloth, the same ingredients as in conventional detergents for clothes are used, but in the present invention, the iminodisuccinate represented by the general formula (I) of the following chemical formula 3 or its derivative (hydroxylated product) is used in the detergent cloth. Is used.

[0007]

Embedded image (X: counterion, Y: OH or H) where counterion X
As those, those which form water-soluble salts of alkali metals such as sodium are used.

The iminodisuccinate of the general formula (I) is contained in the detergent cloth in an amount of 3 to 20% by weight, preferably 5 to 15%.
% By weight. If the blending amount is less than 3% by weight, the effect of preventing adhesion to the device, screen, etc. at the time of production is not sufficient, while if it exceeds 20% by weight, the hygroscopicity of the detergent fabric occurs and the fluidity deteriorates.

Other ingredients in detergent fabrics include anionic surfactants, nonionic surfactants and other surfactants, zeolites, inorganic builders such as sodium tripolyphosphate and sodium pyrophosphate, sodium citrate, and ethylenediamine. Sodium tetraacetate, nitrilotriacetic acid salt, sodium polyacrylate, sodium acrylate-sodium maleic anhydride copolymer, calcium builder such as polyacetal carboxylate, alkali builder such as carbonate and silicate, carboxymethyl cellulose, polyethylene glycol Recontamination inhibitors such as paratoluene sulfonate, toluene sulfonate, xylene sulfonate, viscosity modifiers such as urea, enzymes such as protease, lipase, cellulase, amylase, quaternary ammonium salt, vent Flexible imparting agents such as site, bleaches, can be used fluorescent agents, perfumes, dyes and the like. These compounds can be compounded by any method depending on their properties.

Examples of the above-mentioned anionic surfactants include the following. 1) an α-olefin sulfonate having an average carbon number of 10 to 20; 2) an alkyl sulfate having an average carbon number of 10 to 20; and 3) a linear or branched alkyl group or alkenyl group having an average carbon number of 10 to 20. Polyoxyethylene alkyl ether sulphate or alkenyl ether sulphate having an average of 0.5 to 8 mol of ethylene oxide, 4) fatty acid lower alkyl having an average carbon number of 8 to 22 (C ₁ to
C ₃ ) ester sulfonates, 5) saturated or unsaturated fatty acid salts having an average carbon number of 10 to 22. Alkali metal salts such as sodium and potassium are usually suitable as counterions in these anionic surfactants.

The following can be exemplified as the above-mentioned nonionic surfactants. 1) EO-added nonionic surfactant obtained by adding ethylene oxide (EO) to an average of 4 to 50 mol of a primary or secondary alcohol having 8 to 18 carbon atoms, and 2) a primary or secondary alcohol having 8 to 18 carbon atoms. To EO
Is an average of 4 to 25 mol, and propylene oxide (PO) is an average of 3 to 15 mol. EO-PO-added nonionic surfactant, 3) Lower alkyl (C ₁ to C 6 -C 20) fatty acid.
C ₃ ) Ester type nonionic surfactant obtained by adding 4 to 25 mol of EO on average to the ester.

Detergent dough containing each of these components is granulated by kneading, crushing granulation, stirring granulation, etc. In the crushing or sizing step, an auxiliary agent is added to prevent adhesion to the apparatus body, screen, etc. Is added. As this adhesion prevention aid,
Inorganic builders are used, and alkaline inorganic builders such as zeolite and sodium carbonate are preferably used. This auxiliary agent is preferably added in an amount of 2 to 20% by weight, preferably 5 to 15% by weight, based on the detergent fabric.

[0013]

According to the present invention, when the detergent fabric is crushed or sized by using an inorganic builder as an auxiliary agent to produce high bulk density detergent particles, by blending iminodisuccinates into the detergent fabric, It is possible to effectively prevent adhesion to a device or a screen during crushing or sizing.

[0014]

【Example】

1) A solid content of 60% is obtained by using each component except the nonionic surfactant from the detergent component (A) shown in Tables 1 and 2 below.
The detergent slurry of 1. was prepared and adjusted to an appropriate viscosity with tap water. This detergent slurry was dried using a countercurrent spray drying tower at a hot air temperature of 270 ° C. so that the water content was 5% to obtain a spray dried product. Then, the dried product, nonionic surfactant and water were continuously kneaded (Kurimoto Iron Works, KRC
It was introduced into a kneader # 2 type) to obtain a dense and uniform kneaded product.

A perforated plate (thickness: 10 mm) having 80 holes of 5 mmφ was installed at the outlet of this kneader, and the kneaded product was made into a cylindrical pellet of about 5 mmφ × 10 mm. The pellets were introduced into a crusher (Speed Mill ND-10 type, Okada Seiko Co., Ltd.) together with the detergent component (B) shown in Tables 1 and 2. The crusher has 15 cm long cutter cloth in 4 stages, rotates at 3000 rpm, the screen is made of 360 degree punching metal,
The hole diameter is 2 mmφ and the aperture ratio is 20%. 300 g of detergent was crushed, the weight of the screen before and after the crushing was measured, and the amount of adhering screen was measured from the increase in the weight. The angle of repose was also measured to determine the fluidity.

[0016]

[Table 1] Table 1 Example Sample No. 1 2 3 4 5 6 Composition (wt%) Detergent component (A): α-SF 10 − 5 12 − 10 AOS 5 2 2 2 2 5 AES − − 5 − 5 − AS − 10 5 5 5 − LAS 15 15 10 10 15 15 AE 3 3 3 3 3 3 HIDS 10 3 10 5 15 5 IDS − − − − − 5 Sodium carbonate 17 25 15 20 25 17 Potassium carbonate 5 5 5 5 5 5 Zeolite 10 15 10 10 5 15 Polyacrylic acid 2 2 1 1 1 2 Fluorescent agent 0.3 0.3 0.3 0.3 0.3 0.3 Sodium sulfate balance Moisture 6 6 6 6 6 6 Detergent component (B): Grinding and conditioning Granule Auxiliary Zeolite-5-25- Fine sodium carbonate 8-10 5-8 Screen coverage (g) 0.2 0.3 0.2 0.2 0.3 0.2 Angle of repose (°) 50 60 55 50 55 50

[0017]

[Table 2] Table: 2 Comparative example Sample No. 1 2 3 Composition (wt%) Detergent component (A): α-SF 10 − − AOS 5 2 − AES − − 5 AS − 10 10 LAS 15 15 10 AE 3 3 2 HIDS − 2 − Sodium carbonate 25 25 15 Potassium carbonate 5 5 5 Zeolite 25 15 25 Polyacrylic acid 2 2 1 Fluorescent agent 0.3 0.3 0.3 Sodium sulfate balanced water content 6 6 6 Detergent component (B): Grinding and sizing aid Agent Zeolite-5- Powdered Sodium Carbonate--10 Screen coverage (g) 1.6 0.6 0.6 Angle of repose (°) 50 65 70 α-SF: α-sulfofatty acid methyl ester whose fatty acid residue has 10 to 18 carbon atoms Sodium salt AOS: sodium α-olefinsulfonate having 14 to 18 carbon atoms AES: sodium polyoxyethylene alkyl ether sulfate having 10 to 14 carbon atoms of alkyl group (average number of moles of ethylene oxide added = 2) AS: carbon number 12 ~ 14 sodium alkylsulfate LA S: Alkyl group having a carbon number of 10 to 14 sodium linear alkylbenzene sulfonate AE: 5 to 15 mol of ethylene oxide of an alcohol having a carbon number of 12 to 14 and adduct of HIDS: sodium hydroxyiminodisuccinate IDS: sodium iminodisuccinate fluorescent agent : 4,4-bis (sulfostyryl) biphenyl disodium (Tinopar CBS)

Claims (1)

[Claims] 1. A method for producing a high-bulk density detergent by crushing or sizing a detergent dough, which comprises using an inorganic builder as an auxiliary agent in the crushing and sizing step, wherein: A method for producing a high-bulk density detergent composition, which comprises blending 3 to 20% by weight of the indicated iminodisuccinate or a derivative thereof into a detergent dough. Embedded image (X: counter ion, Y: OH or H)