JPS61271399A - 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 Field of Industrial Application The present invention relates to a non-coloring detergent composition, and more particularly to a non-coloring detergent composition containing an aqueous solution of an alkali metal salt of tripolyphosphate and hypochlorous acid. It is something.

<Prior Art> Compositions containing at least an alkali metal tripolyphosphate and a hypochlorite as active ingredients are generally used as detergents for tableware, bathtubs, tiles, etc.; As a result, there is usually a phenomenon of reddish-purple coloration, and ultimately the formation of slag due to agglomeration of colloidal particles, which poses the problem of significantly lowering the commercial value.

This is thought to be caused by the behavior of iron compounds that are inevitably mixed in, and conventionally, the final product has been separated after separating the aggregates.

<Problems to be Solved by the Invention> According to experiments by the present inventors, when iron compounds are contained in alkali tripolyphosphate, when they interact with hypochlorous acid, the iron components are oxidized to ferrate ions. and Fe is about 10
It has been found that when the content is above ppm, the coloring of ferrate ions becomes clear even to the naked eye.

Generally, commercially available alkali tripolyphosphates not only inevitably contain iron impurities, but may also contain iron impurities from other detergent raw materials.

Therefore, coloring is unavoidable in detergents that contain at least alkali tripolyphosphate and hypochlorite, but even in detergents that contain iron compounds to solve the above-mentioned problems, coloring cannot be avoided. There was a desire for a detergent that would not cause the generation of colloidal floating components.

The present invention provides an alternative and improved detergent.

In other words, the present invention relates to a detergent composition containing a hypochlorite and an alkali tripolyphosphate, in which a water-soluble organic compound is added and blended. .

Examples of the hypochlorite in the present invention include sodium hypochlorite, potassium hypochlorite, calcium hypochlorite, etc., and examples of the alkali tripolyphosphate include sodium tripolyphosphate, potassium tripolyphosphate, etc. It will be done.

As mentioned above, the present invention uses hypochlorite and alkali tripolyphosphate as essential raw materials in a detergent,
In addition to this, surfactant and, if necessary, alkali carbonate,
This is an improvement on detergents containing alkaline agents such as alkali silicate, abrasives such as quartz powder, and the like.

That is, the present invention substantially suppresses coloring and colloid formation due to iron compounds by adding and blending a water-soluble organic compound to the detergent composition.
This applies to improved detergents.

The water-soluble organic compound referred to in the present invention includes not only those in which the M compound itself dissolves in water, but also organic compounds that generate water-soluble substances by hydrolysis. Organic compounds are aliphatic -O
Compounds containing at least one group among H group, -g-OH group, -g-H group, and aldehydes, dialdehydes), ketones (including
(including oxyketones and diketones), oxycarboxylic acids (including basic or polybasic carboxylic acids and their respective salts and esters), oxycarboxylic acids (salts, esters), aminocarboxylic acids (salts, esters), carbonic acid derivatives, One or more carbohydrates selected from carbohydrates (monosaccharides, oligosaccharides, polysaccharides), such as formic acid, acetic acid, propionic acid, acrylic acid, oxalic acid, tartaric acid, fumaric acid,
Carboxylic acids such as lactic acid and citric acid, their esters, sodium, calum or i N Ha salts, methanol, ethanol, furopanol, butanol, alcohols such as ethylene, glycol, propylene glycol, glycerin, formaldehyde, chelates such as ArOH, etc. Examples include carbonic acid derivatives such as ethyl carbonate and propyl carbonate, cynic acid mono-, di-, or triesters such as methyl phosphate, ethyl phosphate, and propyl phosphate, and carbohydrates such as starch and sucrose.

Although the detailed mechanism by which the water-soluble organic compound of the present invention suppresses coloring and colloidal particle formation in the detergent composition is not clear, iron compounds contained in detergent raw materials such as alkali tripolyphosphate dissolve in an aqueous medium. I'6+?
? It is thought that the production of Fe04- in detergents is always suppressed as a result of the chelating effect on the Fe04- or the reducing effect of ferric acid ions (Feo,'') produced by oxidation with alkali hypochlorite.

Therefore, even if iron compounds are unavoidably present as impurities in detergents, as long as water-soluble organic compounds are added, coloring of the detergents will not occur.

Therefore, in the present invention, although the water-soluble organic compounds to be added and blended are illustratively listed above, all of the above compounds may be used as long as they have a chelating effect with iron ions or an effect of reducing ferrate ions. It can be applied in the same way as carboxylic acid esters, especially carboxylic acid esters.

The amount of the organic compound added to the detergent composition is as follows:
Although it depends on the iron content in the composition, in most cases it may be about 1 to 1.5 times the equimolar amount of iron (calculated as 20 g of Fe), but if necessary, an excess amount may be added. There is no particular problem.

Examples will be shown below, and 11 represents the weight.

<Examples> Example 1 Potassium tripolyphosphate j containing 20 ppm iron 6.
8 F and water 68.89 and 10 Sodium hypochlorite j4.
Mix and dissolve 4r. (The iron contained in this solution is 5.5
5 pl)m. ) A specified amount of the water-soluble organic compound color inhibitor of each cage was added to this solution, and the solution was allowed to stand at room temperature and the coloring was observed. The results are shown in Table 1.

Note that the amount added is the value relative to the total amount.

Table 1 tno: Good (no coloring after 36 days) x:
L Colored in 6 days Δ: Colored in 24 days Mu:
Coloring in 12 Days Example 2 To a solution of potassium tripolyphosphate, water, and 104 hypochlorite sorter prepared in the same manner as in Example 1, ferric dichloride was added to adjust the Fθ concentration to 40 ppm.

Niko solution 100? Diethyl gyotartrate 1 omy (i.e. O,
t) was added to give a concentration of [ ] 01%, and the mixture was left at room temperature.

As a result of observation after 36 days, no coloration was observed.

Example 3 Potassium tripolyphosphate (K'rP) 1 [109 to 66 d of water was added to dissolve it, the insoluble potassium metaphosphate was suction filtered, and the soluble organic compound was added to the remaining liquid.

Next, liquid KT containing this water-soluble organic compound is added.
Detergent composition containing sodium hypochlorite in P (2 liters of sodium hypochlorite, 6 liters of potassium chloride, 6 liters of caustic potassium)
A KTP liquid detergent was prepared by mixing 80v of sodium silicate (product of Nippon T-ball Co., Ltd.) with a solid content of 28% and 24% sodium silicate. The iron content in this detergent was 120 ppm as Fe.

When they were allowed to stand still and observed for the presence or absence of coloration, the results shown in Table 2 were obtained.

Table 2 ■ O: Good (inhibitory effect) ∆ No after 24 hours Δ: No after 48 hours x No after 2 hours <Effects of the invention> Conventionally, it contains at least hypochlorite and alkali tripolyphosphate. In the detergent composition, a reddish-purple coloring, which is thought to be caused by ferric acid ions, was observed, and the formation of colloidal particles was unavoidable if left alone, but in the composition according to the present invention, both coloring and the generation of insoluble fine particles were virtually eliminated. is suppressed.

Therefore, the troublesome operation of removing insoluble fine particles based on colloidal particles as in the conventional method is completely unnecessary, and there is an advantage that a detergent of good quality can be prepared economically and advantageously irrespective of the iron content.

Claims (2)

[Claims] (1) A detergent composition obtained by adding a water-soluble organic compound to a detergent composition containing hypochlorite and alkali tripolyphosphate. (2) The water-soluble organic compound is an aliphatic carboxylic acid, an oxycarboxylic acid, or a derivative such as a salt or ester thereof, an aliphatic aldehyde, an aliphatic alcohol, a ketone, an amine,
Claim 1 is at least one or two or more selected from amino acids, carbonic acid derivatives, and carbohydrates.
Detergent compositions described in section