JPS638497A - Water-soluble film-containing bulky detergent - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a high bulk density detergent containing a water-soluble film with good solubility and detergency.

In order to improve solubility, conventional detergents are made into bead-like hollow particles with an average particle size of 200 to 800 μm by spray drying. As a result, the bulk density was approximately 0.3 g/cc, which not only increased transportation costs but also required a considerable amount of space for storage and display.

In addition to this, ordinary households also have trouble finding a place to store them.

There was a problem that it was difficult to measure. For this reason, the current eruption S
The development of a detergent that solves the drawbacks of dry detergents, allows cleaning with a small amount of detergent, and is easy to measure has been awaited.

Therefore, a method for producing a high bulk density detergent composition by crushing a detergent composition was invented, as disclosed in JP-A-60-96698. However, the detergent composition as it is is not sufficient in terms of usability, especially ease of measurement during washing.

One possible solution to this problem is to package the detergent used for each wash in a water-soluble film, but this method lacks sufficient solubility and detergency, and further improvements are needed.

The present invention provides a high bulk density detergent containing a water-soluble film with improved solubility and detergency.

The high bulk density detergent containing a water-soluble film of the present invention has a bulk density of 0.5 to 1.2 g in which the detergent composition has a surfactant as a main component.
/cc and a bulk density of 0.5 to 1.2 g/cc containing an alkali builder as a main component, and the two are packaged by a water-soluble film without contacting each other. Figure 1 is a plan view showing an example of the structure of the water-soluble film-containing high bulk density detergent of the present invention, and Figure 2 is the line A.
-A is a cross-sectional view along line A. The periphery of the water-soluble film 13 is sealed to form a pack 11, and the central part of the pack 11 is further sealed to form a partition part 15, and a first chamber 17 and a second chamber 19 are formed on both sides of the partition part 15. ing. The first chamber 17 is filled with active agent granules containing a surfactant as its main component, and the second chamber is filled with an alkali mixture containing an alkali builder as its main component, and the bag is poured into water during washing. Then, each of them disperses and dissolves in water.

Examples of the material for the water-soluble film used in the present invention include polyvinyl alcohol, polyvinylpyrrolidone, methylcellulose, polyethylene oxide, gelatin, etc. Among these, partially saponified polyvinyl alcohol is most preferred. The molecular weight of partially saponified polyvinyl alcohol is 10,000 to 200,00.
0 is appropriate. The thickness of the water-soluble film is preferably 20 to 40% from the viewpoint of processability.

Moreover, an embossed water-soluble film can also be used. This embossed film consists of a compressed first region and a further compressed second region, and it is suitable that the area of the second region is 50% or less, preferably 20 to 40%.

However, even if a conventional high bulk density detergent composition is packaged in such a water-soluble film, the solubility is not sufficient, and therefore the required cleaning cannot be obtained.

Therefore, we focused on the composition of high-bulk-density detergents and conducted intensive studies.We found that the detergent composition components are divided into a part mainly composed of a surfactant and a part mainly composed of an alkali builder. They have found that by packaging the detergent in a water-soluble film so that the two do not come into contact with each other, the morphological characteristics of the detergent containing the water-soluble film are fully utilized to improve the solubility of the scales.

When the detergent components used for one wash are packaged in one bag 11, the first chamber 17 is filled with active agent granules (the part containing surfactant as the main component) 21, and the second chamber room 19
is filled with an alkali mixture (a portion containing an alkali builder as a main component) 23.

As the surfactant used in the part whose main component is a surfactant, straight-chain alkylbenzene sulfonate having an alkyl group having an average carbon number of 8 to 16, and an average carbon number of 10 to 2
0 olefin sulfonate, an alkyl sulfate with an average carbon number of 10 to 20, an alkyl ether sulfate with an average of 0.5 to 8 moles of ethylene oxide added to an alcohol with an average of 10 to 20 carbon atoms, an average of 10 carbon atoms Anionic surfactants such as sulfonic acid salts of fatty acid esters of ~20 are exemplified. As salts of these anionic surfactants,
Sodium, potassium, ethanolamine, ammonium, etc. can be used, and potassium salts are preferred from the viewpoint of solubility.

In addition, as a nonionic surfactant, the average carbon number is 8 to 1.
Ethylene oxide (
An EO-added nonionic surfactant with an average of 8 to 30 moles of EO) added to a primary or secondary alcohol with an average of 8 to 18 carbon atoms, 8 to 20 moles of EO, and an average of 3 to 15 moles of propylene oxide (P○). Examples include EO-PO addition type nonionic surfactants with molar addition.

In the high bulk density detergent composition of the present invention, the anionic surfactant is suitably present in the composition in an amount of 20 to 50% by weight, preferably 25 to 40% by weight.

If the amount is less than 20% by weight, the cleaning power will be low and there will be a practical problem, and if it is more than 50% by weight, it will be difficult to manufacture.

In addition, as optional ingredients, zeolite, phosphate, which is a so-called chelate builder that captures hardness components in the washing liquid,
Sodium citrate, sodium nitrilotriacetate (NTA
), ethylenediaminetetraacetic acid soda (EDTA),
Polysodium acrylate, polyacetal carboxylate, etc. can also be used. The entire amount of these chelate builders may be added to the part whose main component is a surfactant, or a part thereof may be blended into the part whose main component is an alkali builder. In addition, Na, S○ white carbon, smectite, etc. can also be blended as necessary.

The part whose main component is this surfactant is
As described in Japanese Patent No. 6698, each detergent component is kneaded and mixed, then crushed, and then the average particle size is 10 μm.
It can be manufactured by coating with the following water-insoluble fine powder. The obtained granules have a bulk density of 0.5 to 1.2 g/cc.

The water-insoluble fine powder used at this time is:

Those having an average particle diameter of 10 μm or less, preferably 4 μm or less are used. The amount of water-insoluble fine powder added during coating is preferably 0.5 to 5% by weight based on the granules. Specific examples of water-insoluble fine powder include aluminosilicates such as A-type zeolite, calcium stearate, magnesium stearate, calcium carbonate, magnesium carbonate, magnesium silicate,
Examples include silicon dioxide (white carbon) and titanium dioxide. The granules obtained as described above may be packaged as they are with trace ingredients such as fragrances added, or
The particles are sized using a Marumerizer (Fuji Powdal [)] or a cyclone-like device in which they are entrained in an air flow and brought into contact with a wall surface to make the particle shape uniform and approximately spherical. It is also possible to adjust and separate the package.

The part whose main component is alkali builder is granular ash, light ash,
Sodium carbonate such as sodium sesquicarbonate, potassium carbonate, sodium silicate such as powdered silica, sodium borate, etc. are used alone or in combination. These alkaline builders can also be used as is.

It can also be granulated with a binder such as polyethylene glycol. In addition, optional ingredients such as enzymes such as protease, amylase, lipase, and cellulase, bleaching agents such as sodium percarbonate and sodium percarbonate, reducing agents such as sulfites, fluorescent fragrances, and pigments may be used as necessary. can. These may be added to the part containing the surfactant as the main component, to the part containing the alkali builder as the main component, or even to both.

The alkali builder is suitably used in an amount representing 10 to 60% by weight, more preferably 20 to 50% by weight of the total detergent composition.

According to the present invention, the components in a high bulk density detergent composition are divided into a part mainly composed of a surfactant and a part mainly composed of an alkali builder, so that the two parts do not come into contact with each other. By packaging with a water-soluble film, a high bulk density detergent containing a water-soluble film with good solubility and detergency can be realized.

EXAMPLES Hereinafter, the effects of the present invention will be explained in more detail with reference to Examples. The performance evaluation method in each example is as follows.

Heat it in a beaker with a diameter of 20c+a and a height of 25c+s at 25℃.
4Q of water and insert the cell for measuring conductivity into this. Next, add 1 portion of high bulk density detergent containing a water-soluble film to the water.
The pack was added and stirred at a speed of 250 rpm using a constant speed stirrer, and the time required for 90% of the added pack detergent to dissolve was measured, which was defined as T9o (seconds). Here, the conductivity factor is HORI[3A C0NDLICTIVE METER
A DS-8F model was used.

(i) Preparation of artificial soil Clay containing crystalline minerals such as kaolinite and vermiculite as main components was dried at 200° C. for 30 hours and used as an inorganic soil.

After dissolving 3.5 g of gelatin in 950 cc of water at about 40°C, it was
0.25 g of carbon black was dispersed in water using a carbon black (manufactured by NEMATICA). Next, 14.9 g of inorganic dirt was added and emulsified with a polytron, and 31.35 g of organic dirt was further added and emulsified and dispersed with a polytron to prepare a stable dirt bath. After immersing a Loam X 20c+u specified clean cloth (cotton cloth No. 60 designated by Japan Oil Chemists' Association) in this dirt bath, the water was squeezed with two rubber rolls to equalize the amount of dirt attached. After drying this dirty cloth at 105℃ for 30 minutes,
Both sides of the dirty cloth were rubbed 25 times on each side. This is 5
A sample cut to cIIIX5cm and having a reflectance in the range of 42±2% was used as a dirty cloth. The soil composition of the artificially soiled cloth thus obtained is shown in Table 1.

(Left below) (if) Cleaning method The cleaning device is a two-tank washing machine (newly manufactured by Hitachi “Aozora J CP”)
S-520 type) was used.

The items to be washed were 10 pieces of the artificial soiled cloth sewn onto a worn skin shirt, giving a total weight of 1 kg.

Pour 30Q of 25°C tap water into the washing machine, then add one pack of high bulk density detergent containing water-soluble film and the items to be washed.
Wash for 10 minutes. After washing, the cloth is dehydrated for 1 minute, then rinsed for 3 minutes, and after dehydration for 1 minute, rinsed for 3 minutes, the reflectance of the dirty cloth is measured, and the cleaning power is calculated using the following formula.

Cleaning power evaluation method It is the reflectance (%) measured as follows.

The detergency was evaluated using the average value of 10 artificially soiled cloth samples.

Example (1) Method for producing activator granules The detergent components shown in Table 1 were introduced into a kneader (RC kneader I2 type manufactured by Kurimoto Iron Works), and a uniform kneaded product was obtained from the outlet. To make it easier to crush this, use a pelleter of 5mφ
After forming into cylindrical pellets of 5 mm, they were crushed using a crusher (Okada Sei Nispeed Mill NO-30), and then A-type zeolite with an average primary particle size of 3 μm was added to the granulated material 3 to the resulting crushed product. % and coating was carried out using a drum rotating once to obtain a granulated product having an average particle size of 800 μm and a bulk density of 0.9 g/cc. This granulated material has a composition of 50 parts by weight of surfactant, 40 parts by weight of zeolite, and 10 parts by weight of water.

In Table 1, the total detergent composition including alkaline builder etc. is expressed in weight % per breast.

2) Made of alkali compound: 1 grain of silica powder (average particle size 250 μff1) ash (350 μff1)
A 1:1 mixture of .mu.m) was used.

3) Production of Comparative Example °J (pair of granules) All of the components shown in Table 1 were granulated according to (1) above.

(4) Manufacture of high bulk density detergent containing abrasive film A 5×6cxn pack 11 shown in FIG. 1 is made of a 25 μm thick partially saponified polyvinyl alcohol film with a smooth surface and has partitions 15 formed by heat sealing. It was created. The first chamber 17 of the pack 11 had a size of 5×3.5 squares, and was filled with active agent granules. Pack 15 2nd chamber 19
The size of the cell was 5 x 2,50, and the alkaline mixture was filled therein.

On the other hand, the same 5x6a11 except that the partition part 15 is not provided.
A pack was prepared, and the above-mentioned integral granules were added thereto.

The solubility and detergency of a high bulk density detergent containing a water-soluble film packed in a bag with the detergent composition shown in Table 1 was evaluated for solubility and detergency.

The abbreviations of detergent components in Table 1 are as follows.

LAS-K: Potassium alkylbenzenesulfonate having an alkyl group having 10 to 14 carbon atoms AOS-Na: Sodium saturated α-olefin sulfonate having 14 to 18 carbon atoms SFM e Na: Sulfone methyl ester of hardened tallow fatty acid unsaturated S F M Q Na methyl ester of nioleic acid is sulfonated and then neutralized with Na OH Nonionic surfactant: 1 with 11 to 15 carbon atoms average 15 moles of ethylene oxide adduct of alcohol zeolite di-synthetic type A zeolite (Mizusawa Chemical "Jilton BJ") Powdered silica: Na2O:Si○, = 1:2.2 water 22%
Average particle size: 250 μm (Nippon Kaei-no) Soda carbonate: Granular ash, average particle size: 350 μm (Asahi Glass Co., Ltd.) Note) × indicates a comparative example, others are examples ■ A in parentheses in the cleaning composition of the example , b indicates that a indicates that the active agent is incorporated into the granulated material, and b indicates that the active agent is incorporated into the alkali mixture.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing an example of the structure of the water-soluble film-containing high bulk density detergent of the present invention, and FIG. 2 is a sectional view taken along the line A-A. 11... Pack 13... Water-soluble film 15... Partition part 17... First chamber 19... Second chamber 21... Active agent granules 23... Alkaline mixture

Claims (1)

[Claims] 1. The detergent composition has a bulk density of 0.
It consists of a part with a bulk density of 5 to 1.2 g/cc and a part with a bulk density of 0.5 to 1.2 g/cc, which is mainly composed of alkali builder, and the two are separated by a water-soluble film without coming into contact with each other. A high bulk density detergent containing a water-soluble film.