JPH04239100A - Tabletted detergent composition - Google Patents

Abstract

PURPOSE:To obtain the title composition readily soluble in water without the necessity for using a foaming agent and a disintegrating agent by mixing a surface active agent with potassium carbonate at a specified ratio. CONSTITUTION:The title composition contains 5-50wt.% surface active agent and 10-70wt.% potassium carbonate. In addition, a builder, a redeposition inhibitor, a viscosity modifier, an enzyme, a flexibilizer, a bleaching agent, a fluorescent material, a perfume, coloring matter, etc., usually used can be incorporated into this composition.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tablet-type detergent composition with excellent solubility.

0002

[Prior Art] Conventional laundry detergents have a bulk density of 0 by adding a bulking agent (usually mirabilite is used) that hardly contributes to cleaning performance to the composition, and then spray-drying the bulking agent.
．． It was produced as bead-shaped hollow particles of about 3 g/cc.

[0003] However, since such detergents have a light specific gravity and a low concentration of active agent, transportation costs are high and a considerable amount of space is required for storage and display. Furthermore, even in ordinary households, there were inconveniences such as having trouble finding a place to store it and difficulty in weighing it. Therefore, recently, high bulk density granular detergents that can be cleaned with a small amount of detergent have been put on the market.

In order to further improve convenience, attempts have recently been made to develop tablet detergents. However, while tablet detergents are simple and easy to use, they have the disadvantage that they cannot be quickly dissolved in water.

[0005] Such easy disintegration in water is also required for tablets used in other fields such as pharmaceuticals and foods. Therefore, in tablets for these fields, in addition to the main ingredients, succinic acid and sodium carbonate or sodium bicarbonate are generally mixed in a dry state and formed into tablets, so that when it comes into contact with water, the acid and carbonate are released. A method has been adopted in which the disintegrability is improved and the dissolution of the main component is promoted by reacting with carbon dioxide to generate carbon dioxide.

However, in tablet detergents, if a surfactant is blended as the main active ingredient with the above-mentioned foaming ingredients, mold adhesion will occur during manufacturing, resulting in a significant deterioration in productivity, and the tablet may disintegrate. There was also the problem that sex itself was insufficient. Furthermore, while the tablet detergent is being stored, it absorbs the moisture contained in it and the moisture in the air, and an acid-alkaline reaction gradually occurs, generating carbon dioxide, so the tablet detergent is poured into water after storage. Then, there was a problem that the disintegration property deteriorated significantly.

[0007] The applicant has also previously proposed improving the disintegration properties of tablet detergents in water and the mold releasability during production by adding sparingly water-soluble carboxymethyl cellulose powder as a disintegrant. Ganpei 1-1341
No. 27).

[0008]

[Problems to be Solved by the Invention] The present invention overcomes these conventional drawbacks and allows
To provide a tablet detergent that quickly dissolves in water.

[0009]

[Means for Solving the Problems] The tablet detergent composition of the present invention is characterized by containing the following components (A) and (B). (A) Surfactant: 5-50% by weight. (B) Potassium carbonate: 10 to 70% by weight.

0010

[Embodiment] As the surfactant of component (A), anionic surfactants, nonionic surfactants, etc. are used, and examples thereof include the following.

1) Straight-chain alkylbenzene sulfonate having an alkyl group having an average carbon number of 8 to 16, 2)
α-olefin sulfonate having an average carbon number of 10 to 20,
3) a sulfonate of a fatty acid lower alkyl ester having 8 to 22 carbon atoms as a fatty acid residue;

4) Alkyl sulfate having an average of 10 to 20 carbon atoms, 5) Having a straight or branched alkyl group or alkenyl group having an average of 10 to 20 carbon atoms, and an average of 0
．． Alkyl ether sulfate or alkenyl ether sulfate to which 5 to 8 moles of ethylene oxide have been added; 6) Saturated or unsaturated fatty acid salt having an average carbon number of 10 to 22.

As the counter ion in these anionic surfactants, alkali metal salts such as sodium and potassium are usually suitable.

[0014] Even if one type of surfactant is used alone, two types of surfactants can be used.
They may be used in combination and are blended in the tablet detergent composition in an amount of 5 to 50% by weight, preferably 10 to 40% by weight. If the blending amount is less than 5% by weight, the shape of the tablet must be made larger or the number of tablets used must be increased in order to satisfy the cleaning power, which poses a practical problem. On the other hand, if it exceeds 50% by weight, the amount of other components such as builders will be reduced, which is not preferable.

Component (B) potassium carbonate is contained in the tablet detergent composition in an amount of 10 to 70% by weight, preferably 30 to 6% by weight.
0% by weight is added. If the blending amount is less than 10% by weight, the solubility improvement effect will be insufficient, while if it exceeds 70% by weight, restrictions on the blending of other detergent components will become undesirable.

The potassium carbonate of component (B) preferably has an average particle size of 300 μm or less, more preferably 150 μm or less. If the average particle size becomes too large, solubility will be adversely affected.

In addition to the above components (A) and (B), the tablet detergent composition of the present invention further contains inorganic builders such as sodium tripolyphosphate and sodium pyrophosphate; aluminosilicate (zeolite), and citric acid. Calcium ion scavenging builders such as sodium, sodium ethylenediaminetetraacetate, nitrilotriacetate, sodium polyacrylate, sodium acrylate-sodium maleate anhydride copolymer, polyacetal carboxylate; Alkali builders such as sodium carbonate and silicates; sulfurous acid salts, sulfates; anti-recontamination agents such as polyethylene glycol; viscosity modifiers such as para-toluene sulfonate, toluene sulfonate, xylene sulfonate, urea; enzymes such as protease, lipase, cellulase, amylase; Softeners such as grade ammonium salts and bentonite; bleaches, fluorescent agents, perfumes, pigments, etc. can be used.

[0018] The tablet detergent composition of the present invention can be easily formed by tableting according to a conventional tablet forming method, and can be formed by, for example, granular material containing a surfactant and potassium carbonate granular material, or any other suitable material. The ingredients are mixed in powder form and formed into tablets with a diameter of about 20 to 60 mm, a thickness of about 5 to 20 mm, and each tablet weighing about 5 to 60 g.

The moisture content of the powder mixture to be compressed into tablets is 1
It is suitably 0% by weight or less, preferably 1 to 10% by weight. If the water content is too low, a large amount of energy is required for production, which is economically disadvantageous. On the other hand, if the water content is too high, the tablet tends to adhere to the mold during production, making release from the mold difficult.

[0020]

Effects of the Invention According to the present invention, by blending potassium carbonate with a surfactant and compressing it into tablets, it dissolves quickly when added to water without using a special disintegrating agent or foaming agent, making it easy to clean. A tablet detergent that exhibits strength is obtained.

[0021]

[Examples] Hereinafter, the effects of the present invention will be explained in more detail with reference to Examples. Prior to this, the evaluation method used in the examples will be described.

(1) Solubility evaluation method (dissolution time) The tablet detergent prepared in the example was poured into a beaker filled with 2 liters of tap water at 15°C, and heated for 25 minutes using a constant speed stirrer.
Stir at a speed of 0 rpm. A conductivity meter is placed in the beaker, and the change in conductivity is read while stirring.The dissolution time (T9) is the time when the conductivity reaches 90% of the conductivity at complete dissolution.
0).

Example 1 A detergent slurry having a solid content of 45% was prepared using component (A) shown in Table 1 below and optional components. This detergent slurry was dried using a countercurrent spray drying tower at a hot air temperature of 380° C. to a moisture content of 5% to obtain a surfactant-containing spray-dried product.

[0024] Next, various components (B) shown in Table 1 were added to the above dried product, mixed uniformly, and then tableted to give Sample No. Tablet detergent compositions Nos. 1 to 11 were obtained and evaluated for solubility. Here, tableting is carried out using powder composition 15 after uniform mixing.
g is taken in a cylinder with an inner diameter of 40 mm, and 200 to 500
This was carried out by applying pressure at kg/cm2 for 1 minute to obtain a detergent tablet with a diameter of 40 mm and a weight of 15 g.

[0025]

[Table 1] Sample No.
．． 1 2 3 4 5 6 7 8
9 10 11 Composition (A) Component: AOS-
K 10 10 10 1
0 10 10 - 10 10 10
10 (wt%) LAS-K
10 10 10 10 1
0 - - 10 10 10 8
AS-Na
− − − − − − 10
− − − − L
AS-Na − − − −
− − 10 − − − −
α-SF-Na
− − − − − 10 − −
− − − Nonion − − − − − −
- - - - 2 Optional component: A-type zeolite 10 10 10 10
10 10 10 10 10 10
10 Carbonic acid-Na
10 10 10 10 10
10 10 10 10 10 5
Silicic acid-Na
5 5 5 5 5 5
5 5 5 5 2
Sulfite-Na2
2 2 2 2 2 2 2
2 2 -
Glauber's Salt
balance
(B) Component: Carbonic acid-K (150 μm)
40 - - - - 40 40
5 20 50 60
Carbonic acid-K (500μm) - 40 -
− − − − − − − −
Carbonate-Na (150μm)
− − 40 − − − − −
− − − Glauber's Salt (
150μm) − − − 40 −
- - - - - -Dissolution time T90 (
minutes) 3 7 1
0 20 30 5 4 15 5
2 2

that's all
(1) Sample No. 1, 2, 6, 7, 9,
10 and 11 are examples, sample No. 3, 4, 5, and 8 are comparative examples (2) (A) component: AOS-K=C14-C
Potassium 18α-olefin sulfonate
LAS-K = linear C10-C14 alkylbenzenesulfonic acid
potassium
AS-Na=C12-C15 sodium alkyl sulfate LAS
-Na=linear C10-C14 alkylbenzenesulfonic acid
Sodium α-
SF-Na=methyl ester of C12-C16 saturated fatty acid
sodium sulfonate
Nonion = C12-C13 primary alcohol with ethylene oxide
E with an average of 20 moles of (EO) added
O addition type
Nonionic surfactant (3) Component (B): The average particle size is shown in parentheses.

Claims (1)

[Claims] Claim 1: (A) Surfactant: 5 to 50% by weight (B
) Potassium carbonate: A tablet detergent composition characterized by containing 10 to 70% by weight.