JPS6015500A - High bulk density detergent composition - 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 detergent composition used for washing clothes, etc. More specifically, the present invention relates to a detergent composition used for washing clothes, etc. The present invention relates to a new type of detergent composition having outstandingly good properties.

Heavy duty detergents are currently offered on the market in granular or liquid form. Comparing the two, current granular detergents are generally hollow particles with an average particle size of about 200 to 800μ (their bulk density is around 0.3 El/pc), so they are usually bulky relative to their weight. be. Therefore,
Current granular detergents are not only inconvenient to carry, but also require considerable space for storage and display. In addition, when using granular detergents at home, even if the proper amount to use and the means to use it are clearly indicated on the carton, it is troublesome for consumers to put it into practice. On the other hand, liquid detergents have a high concentration of active ingredients, so they are bulky, such as granular detergents.
It also has the advantage of being able to measure the amount used by hand. However, liquid detergents tend to have a problem in that their cleaning power is slightly inferior to that of granular detergents due to the alkaline bilge formulation [(1 Ka·]f), and the cost of the bottle containing the detergent is high. It has the disadvantage of being more expensive than cartons of granular detergent.

In view of the current state of heavy-duty detergents as described above, the present invention proposes a high-density detergent composition that can be used as a detergent in a form different from conventional detergents, and according to the present invention,
Since the bulk density of the detergent can be increased and made into tablets, for example, the amount used per wash can be measured in tablets, and the high bulk density detergent compositions of the present invention can therefore be compared with current granular detergents. There is no such hassle of weighing. Furthermore, according to the present invention, active ingredients and other ingredients can be contained in a single particle at a high concentration, so that current granular detergents are not bulky.
In addition, since the detergent composition of the present invention is not liquid, it does not pose a problem when blending alkaline bilge, unlike liquid detergents.

Incidentally, although some high bulk density type detergents are commercially available in Europe and America, they have not yet been developed in Japan. This is thought to be due to differences in customs during washing. In Western countries, it is customary for ordinary households to use hot water for washing, but in Japan, with some exceptions, cold water supplied from the tap is always used for washing, so high-density detergents This is because there is a concern that it will take a long time to dissolve.

Therefore, in order to develop a high-density detergent that is suitable for Japan's laundry habits, the most important issue is to provide a high-density detergent with easy solubility that dissolves in cold water in a short period of time. I can say it. The inventors of the present invention have conducted extensive research to solve this problem, and have found that if a metal hydrogen sulfite and/or a metal hydrogen phosphite and an alkaline compound are blended into a detergent composition, the composition can be compressed. It was confirmed that even when granulated to a high bulk density, this product dissolves in cold water in a short time.

In the present invention, the metal hydrogen sulfite and/or metal hydrogen phosphite (component A) and the alkaline compound (component B) are:
It functions as a disintegrant in water for the granulated high bulk density detergent, and the amount of hydrogen sulfite metal salt and/or hydrogen sulfite metal salt as component A is 3 to 50 wt% of the detergent composition, preferably 10 to 40 wt%. %, and the amount of the alkaline compound as component B is such that the weight ratio of component A/component B is 1.
/□. The amount is generally maintained within the range of ~5/□. Therefore, depending on the degree of high density of the detergent to be obtained as a product and the moderate level of both ingredients A and B actually used, the amount of both ingredients A and B can be arbitrarily selected within the above range. be able to.

Examples of the alkaline compound that is component B of the present invention include alkali metal salts such as carbonic acid, silicic acid, phosphoric acid, and boric acid. Specifically, sodium carbonate, sodium hydrogen carbonate, sodium percarbonate, sodium silicate, ortholine Examples include sodium acid, sodium pyrophosphate, sodium tripolyphosphate, sodium borate, and sodium perborate. Among these, peroxides such as sodium percarbonate and sodium perborate are particularly preferable as the B component since they greatly contribute to the disintegration in water.

The high bulk density detergent composition of the present invention can be easily produced by blending the above-mentioned disintegrant in water with a conventional granular detergent and compressing and granulating it by an appropriate means. The shape after granulation can also be arbitrarily selected from spherical, cylindrical, tablet, etc. The size of the granules may be arbitrary, and for example, one granule may cover the amount of detergent required for one wash. Regarding the bulk density of the granules, the value does not need to be within a specified range in the present invention. However, currently commercially available granular method fill
Considering that the high density of the material is approximately 0.311/cc, and that if the bulk density is increased, there is a concern that the solubility in cold water will deteriorate even if an aqueous disintegrant is added. Then, the bulk density of the detergent composition of the present invention is generally O151/ec or more, preferably 0.8 to 1.2
A range of E/cc is appropriate.

Next, the 4iff composition and effects of the high bulk density detergent composition according to the present invention will be explained in more detail with reference to Examples, but the present invention is not limited thereto.

Example: Into a powdered detergent having a composition of 50 wt% of direct-shipped alkylbenzene sulfone, 20 wt% of zeolite, and 30 wt% of Glauber's salt, both components A and B (both powder) shown in the following table were added in predetermined amounts. After homogeneous mixing, inner diameter 3cWL
φ, put it in a container with a height of 1 cML and cover it, 80)ry
(111 g, pressure of /c++t) was applied to form a tablet.

(Left below) Next, each sample in Table 1 was tested for solubility and detergency. First, the washing machine (PS-53) made by Hitachi, Ltd.
Add 40 g of the tablet-shaped sample to 9. Add the water of 301 to 30.
o The sample was transferred onto a mesh screen and filtered by suction, and the residue was recorded and weighed to evaluate the solubility of the sample based on the weight percentage of the residue relative to the input amount. The solubility was evaluated at two points: water temperature of 10°C and 25°C. The results are shown in Table 2.

In addition, regarding the cleaning power of each sample, using the same washing machine as above, artificially soiled cloth (rug knitted cloth) was washed with a water volume of 3011 and a bath ratio of 3.
0x, use 20g of tablet-like sample, wash for 10 minutes at water temperature of 10°C or 25°C, and then wash the item for 30 minutes.
The cleaning power of each sample was evaluated by rinsing twice for 2 minutes, dehydrating and drying, and visually judging the degree of dirt removal using a 10-point scale. The results are shown in Table 2.

In addition, sample A7 in Table 2 is a commercially available granular detergent (high density - 0.3 g/cc) that has not been made into a tablet, and its composition is 20 wt% of linear alkylbenzene sulfonate.
, Ash 10 wt%, 5i 110 wt%, Zeolite) 15 wt%, awn unsharp balance.

Claims (1)

[Claims] 1. A high-density detergent composition containing a hydrogen sulfite metal salt and/or a hydrogen phosphite metal salt and an alkaline compound.