JPH0461920B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to high bulk density detergent compositions with good solubility. Heavy duty detergents are currently offered on the market in granular or liquid form. Liquid detergents have the advantage of not being too bulky because the active ingredients can be highly concentrated, and because they are liquid, they are easy to handle. The problem is that it is inferior to granular detergents. Bottles containing liquid detergent also cost more than cartons of granular detergent. On the other hand, granular detergents do not interfere with the blending of alkaline builders, and have become mainstream as heavy-duty detergents for clothing. However, in order to improve solubility, current granular detergents have an average particle size of 200 to 200
It is made of bead-shaped hollow particles of about 800 μm, and as a result, the bulk density is as low as about 0.3 g/cc, resulting in a problem that it is bulky relative to its weight. Therefore, current granular detergents not only have high transportation costs, but also require a considerable amount of space for storage and display. In addition, when using granular detergents at home, even if the amount of detergent to be used and the method for measuring the detergent are clearly specified, it is troublesome for consumers to follow. Therefore, efforts are being made to develop high bulk density detergents that overcome the drawbacks of current granular detergents. Increasing the bulk density of detergents allows them to contain higher concentrations of active ingredients, making them less bulky than current granular detergents. Furthermore, if we could take it a step further and make it into tablets, it would be extremely easy to handle, for example, the amount to be used per wash could be calculated in terms of the number of tablets. The biggest challenge in increasing the bulk density of detergents is how to solve the problem of detergent solubility. Since it is common to use the cold water supplied from the tap as it is, it is necessary to have an easily soluble material that can be dissolved in cold water in a short period of time. As a result of intensive studies from the above viewpoint, the present inventors have found that if a strong acid compound of aluminum and at least one of peroxide and hydrogen carbonate are blended into a cleaning composition, it can be compressed and shaped. The inventors have discovered that even if the detergent composition is made to have a high density, the composition can be dissolved in cold water in a short period of time, and based on this knowledge, the present invention has been completed. That is, the high bulk density detergent composition of the present invention comprises (a)
One or two selected from aluminum sulfate, aluminum nitrate, aluminum chloride, and alum
10-30% by weight of strong acid compounds of aluminum over seeds
and (b) a peroxide and/or hydrogen carbonate selected from percarbonates and perborates, a/b=1/
It is characterized by being 5 to 5/1. Components A and B act as disintegrants in water for high bulk density detergents formed by granulation or tablet formation. Component A, a strong acid compound of aluminum, is present in the cleaning composition in an amount of 10 to 10%.
It is blended in an amount of 30 wt%, preferably 15 to 20 wt%.
If this amount is less than 10 wt%, a sufficient blending effect will not be obtained, and if it exceeds 30 wt%, the amount of detergent components will decrease, which is not preferable. It is appropriate that the peroxide and/or hydrogen carbonate as component B be blended in a weight ratio of component A/component B = 1/5 to 5/1. It is determined as appropriate depending on the bulk density of the cleaning composition and the types of both components A and B used. Specific examples of the strong acid compound of aluminum as component A include aluminum sulfate, aluminum nitrate, aluminum chloride, and alum. Specific examples of the peroxide of component B include sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, etc. Specific examples of the bicarbonate include sodium bicarbonate and potassium bicarbonate. Can be mentioned. These B components also act as builders. Detergent components used in ordinary granular detergents can be blended into the detergent composition of the present invention.
These ingredients include alkylbenzene sulfonates, alkyl sulfonates, α-olefin sulfonates, alkyl sulfates, alkyl polyether sulfates, anionic surfactants such as fatty acid soaps, alkyl ethoxylates, alkyl phenyl ethoxy esters, nonionic surfactants such as alkyl alkanolamides, amphoteric surfactants such as alkyl betaines, inorganic builders such as sodium silicate, sodium carbonate, sodium tripolyphosphate, zeolites, sodium sulfate, sodium citrate, sodium ethylenediaminetetraacetate, Organic builders such as sodium nitrilotriacetate may be mentioned. In addition, optical brighteners, enzymes,
Other additives may also be included. The detergent composition of the present invention can be easily molded by suitable means, for example, by blending the above-mentioned components A and B with detergent components. The shape of the cleaning composition after molding can be arbitrarily selected, such as spherical, cylindrical, or tablet-shaped, and its size can also be arbitrarily selected.
For example, it is possible to make one molded product large enough to cover the amount of detergent required for one wash. Although the bulk density of the cleaning composition of the present invention is not particularly limited, it is usually 0.5 g/cc or more, preferably 0.8 to 1.2 g/cc. According to the detergent composition of the present invention, by blending a strong acid compound of aluminum and peroxide and/or hydrogen carbonate as an underwater disintegrating agent, the detergent composition does not have the shape of hollow beads unlike conventional granular detergents. Even at a high bulk density, it shows excellent solubility and can be made to have a high bulk density. The detergent composition of the present invention is particularly useful as a heavy duty detergent for clothing. Example 50wt% linear alkylbenzene sulfonate,
After uniformly mixing both components A and B (both powders) shown in Table 1 below in a powdered detergent with a composition of 20 wt% zeolite and 30 wt% mirabilite, the mixture was prepared with an inner diameter of 3 cm and a height of 3 cm. The mixture was placed in a 1 cm container, covered, and made into a tablet by applying a load of 80 kg (pressure of 11 kg/cm ² ). This sample was evaluated for solubility and detergency according to the following procedure, and the results are shown in Table 1. Evaluation of solubility Washing machine manufactured by Hitachi, Ltd. (PS-5300, blue sky)
Pour 30 g of water into the tank, add 40 g of the tablet-shaped sample, stir for 5 minutes, transfer the entire amount onto a 100 mesh screen, suction it off, weigh the residue after drying, and calculate the weight percent of the residue relative to the input amount. The solubility was evaluated by obtaining the dissolved residue. This rating is 10℃, 25
This was done for ℃. Evaluation of cleaning power Using the washing machine mentioned above, wash artificially soiled cloth (cotton knitted fabric) with a water volume of 30, a bath ratio of 30 times, a sample amount of 20 g,
Washing for 10 minutes at a water temperature of 10°C or 25°C, then rinsing the item twice for 3 minutes each, then dehydrating it and drying it, and visually judging the degree of dirt removal using a 10-point scale.
The cleaning power of each sample was evaluated. 【table】

Claims (1)

[Claims] 1 (a) One or more strong acid compounds of aluminum selected from aluminum sulfate, aluminum nitrate, aluminum chloride, and alum 10 to 30
(b) peroxide and/or bicarbonate selected from percarbonate and perborate, a/b
= 1/5 to 5/1.