JPS5932519B2 - detergent composition - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a detergent composition with excellent cleaning effects, and particularly to a detergent composition suitable for cleaning various bottles such as beer bottles and milk bottles, and for cleaning various food equipment.

When cleaning objects that are difficult to clean, such as beer bottles, milk bottles, and various other types of bottles, the object to be cleaned can be simply immersed in a detergent solution for the required time, or the detergent solution can be sprayed onto the object. It is necessary to use a detergent with excellent cleaning effects that can be used to thoroughly clean the product.

As this type of detergent, a detergent composition comprising a combination of caustic alkali and sodium gluconate is known.

However, even when this type of detergent composition is used, the cleaning effect is still insufficient. For example, as described below, if you prepare a 1% aqueous solution of a compound consisting of 100 parts by weight of caustic soda and 10 parts by weight of sodium gluconate, and immerse a dirty object to be cleaned in this 70°C aqueous solution for 5 minutes, there will be almost no staining. It wasn't washed. An object of the present invention is to provide a detergent composition with extremely excellent cleaning effects by further adding a predetermined amount of iron salt to the above-mentioned known detergent composition.

In order to achieve the above object, according to the present invention, the caustic alkali has the general formula COOXfCH(01H÷CH2OH(
However, x is hydrogen, sodium or potassium,
n is a number of 4 or 5.

) and an iron salt, characterized in that the amount of the iron salt blended is at least 0.1 parts by weight or more based on 100 parts by weight of caustic alkali as an amount of iron ions. . Examples of the above-mentioned caustic alkali include caustic soda and caustic potash.

Also, the general formula COOX + CH (0H) dry CH2OH (where X is hydrogen, sodium or potassium, and n is 4 or 5
is the number of

) is gluconic acid, sodium gluconate, or potassium gluconate when n is 4;
glucoheptonate, sodium glucoheptonate, or potassium glucoheptonate. moreover,
As the iron salt, one or a mixture of one or more selected from the group of iron chloride, iron sulfate, iron nitrate, iron gluconate, and iron glucoheptonate is used.

The blending amount of the iron salt is 10% of caustic alkali as iron ion content.
The amount is at least 0.1 part by weight or more, preferably 0.3 to 30 parts by weight, and more preferably 0.3 to 5 parts by weight.

If the amount of iron ions added is less than 0.1 parts by weight, the cleaning effect will not be sufficiently exerted, which is not preferable. The detergent composition of the present invention obtained in this way has a much superior cleaning effect compared to the conventional detergent compositions mentioned above that do not contain iron salts, and is ideal as a detergent for various dirty objects, especially bottles. It is something.

Hereinafter, the present invention will be explained in detail with reference to Examples.

Example 1 In a 1% aqueous solution of a formulation consisting of 100 parts by weight of caustic soda and 10 parts by weight of sodium gluconate, ferric chloride (Fecl3.6H20) was added as an iron salt in the amounts shown in Table 1 for 100 parts by weight of the caustic soda. was added to prepare samples/F6l-7.

On the other hand, test pieces for celite stains, milk stains, and oil stains were prepared as objects to be cleaned.

Is the Celite stain test piece 3CIL x 10? A milk stain test piece was prepared by applying Celite (diatomaceous earth) suspension water on a glass plate and drying it at room temperature for 24 hours, and a milk stain test piece was prepared by applying commercially available milk on the same glass plate as described above. An oil stain test piece was prepared by immersing the same glass plate as above in a 0.1% acetone solution of commercially available tempura oil, and then drying it at room temperature for 24 hours. . Next, the cleaning effect of each of the samples was tested by immersing each of the above-mentioned soiled test pieces in each of the above-mentioned samples 1 to 7 at a liquid temperature of 70°C for 5 minutes, and then observing the cleaning state of each of the test pieces. The results are shown in Table 1.

In Table 1, the X mark indicates "not washed", the ○ mark indicates "almost washed", and the ◎ mark indicates "completely washed". From Table 1, samples Taki 3 to 7 (compositions of the present invention) in which the amount of salt ions is 0.1 part by weight or more per 100 parts by weight of caustic soda, and especially Taki 4 to 7, show no celite stain, milk stain, or oil stain. On the other hand, when the amount of salt ions is O or 0.05 parts by weight, some cleaning effect on the celite stain of sample/F62 is observed, but the overall cleaning effect is low. It can be seen that this is significantly inferior.

Note that when the amount of salt ions was 30 parts by weight (sample/F67), precipitation occurred in the solution. Example 2 The blending ratio of caustic soda and sodium gluconate was changed as shown in Table 2, and ferric sulfate (Fe
0.5 parts by weight (ferric sulfate (ferric sulfate)
A 1% aqueous solution of a compound containing 2.3 parts by weight of Fe2(SO4)3.6H20) was prepared and designated as Sample/F68-13.

These samples were then subjected to a cleaning effect test using the same stain test piece as in Example 1 and in the same test method as in Example 1, and the results are shown in Table 2. From Table 2, it can be seen that in the compositions of the present invention (Samples No. 10 to 13), the cleaning effect was not affected in any way even if the mixing ratio of caustic soda and sodium gluconate changed considerably, and the cleaning effect was good regardless of the ratio. It can be seen that

In addition, sample /169 caused precipitation of iron hydroxide and was unsuitable as a cleaning agent. Example 3 The same experiment as in Example 1 was conducted except that sodium glucoheptonate was used instead of sodium gluconate, and the same results as in Example 1 were obtained.

From this, in the present invention, even if sodium glucoheptonate is used instead of sodium gluconate, if the iron salt is added in an amount of 0.1 part by weight or more to 100 parts by weight of caustic soda, an excellent cleaning effect can be obtained. It can be seen that Example 4 The same experiment as in Example 2 was conducted except that sodium glucoheptonate was used instead of sodium gluconate, and the same results as in Example 2 were obtained.

Claims (1)

[Claims] 1. A caustic alkali and the general formula COOX■CH(OH)■_nCH_2OH (however,
X is hydrogen, sodium or potassium, and n is a number of 4 or 5. ) and an iron salt, characterized in that the amount of the iron salt blended is at least 0.1 parts by weight or more based on 100 parts by weight of caustic alkali as an amount of iron ions. Detergent composition. 2. The detergent composition according to claim 1, wherein the compound having the general formula is gluconic acid or its sodium or potassium salt. 3. The detergent composition according to claim 1, wherein the compound having the general formula is glucoheptonic acid or its sodium or potassium salt. 4. In the detergent composition according to claim 1, the iron salt is one or more selected from the group of iron chloride, iron sulfate, iron nitrate, iron gluconate, and iron glucoheptonate. Detergent composition. 5. In the detergent composition according to claim 1, the amount of the iron salt added is 1 % of caustic alkali as iron ion amount.
0.3 to 30 parts by weight based on 0.00 parts by weight of the detergent composition.