JPH1017900A - Composition for enhancing deterging and drying effects for dish washer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a compsn. having intended deterging and drying effects while keeping its safety corresponding to that of a non-dangerous substance, homogeneous solubility or dispersibility, and storability. SOLUTION: This compsn. is kept separately from a liquid, powdery or solid main detergent, and is used as an auxiliary deterging component in combination with the main detergent for washing dishes. This composition comprises 5 to 90wt.% lowly foaming nonionic surfactant, 5 to 90wt.% organic solvent comprising one or more polyhydric alcohols or/and one or more glycol ethers, and 5 to 50wt.% water.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an improved composition for a dishwasher, which is separated from a main cleaning agent and is used as an auxiliary cleaning component which is used together with the main cleaning agent during a cleaning operation. About.

[0002]

2. Description of the Related Art Conventionally, detergents for dishwashers such as automatic dishwashers include phosphates, silicates and other alkali components, and further hypochlorite or chlorinated isocyanurate. Many also contain bleaching agents. In particular, liquid detergents generally contain caustic in order to improve the solubility, solution stability, and detergency of the components.

[0003] For this reason, conventionally, a liquid detergent has not been able to obtain sufficient cleaning performance due to the restriction of dissolving each component uniformly and maintaining solution stability. In particular, there was a disadvantage that generation of water spots could not be prevented.

[0004] For powdery and solid detergents,
Good washing without water spot generation is generally always strongly alkaline. Therefore, glass-based tableware etc. may cause alkaline etching, and may be used to clean the functional parts of the washing machine, especially conduits. There are drawbacks such as causing chemical damage to the parts and the like, and furthermore, the washing water has a high PH value and becomes a source of pollution. In addition, in the case where a surfactant is blended in this powdery detergent, the resulting bleaching agent is decomposed in addition to the drawback that the fluidity is deteriorated because of the sticky property and the production becomes difficult, There were also disadvantages.

[0005] The disadvantages of the conventional dishwasher detergents are eliminated, and the main detergent to be blended and auxiliary cleaning components such as surfactants can be effectively used, and their uniform solubility and stability can be improved. In view of the fact that it is not necessary to consider the properties, a detergent composition has been developed in which the main cleaning agent and the auxiliary cleaning component are separately prepared in advance in a separated state and used together during the cleaning operation. This configuration is described in, for example,
No. 55800.

[0006]

The problem to be solved by the present invention is disclosed in Japanese Patent Laid-Open No. 2-558.
The detergent comprising two or more kinds of separated detergent components disclosed in Japanese Patent Publication No. 00, the auxiliary detergent component used in combination with the main detergent comprises one or more low-foaming surfactants. Therefore, there is generally a flash point and the substance is classified as a dangerous substance, and handling of the substance is difficult.

The addition of water to this low-foaming surfactant makes it possible to eliminate its flash point and change it to a non-dangerous substance. However, in this composition, the storage stability is insufficient. There is a disadvantage that you can not plan,
In addition, when a silicone-based antifoaming agent is blended in order to sufficiently attain the defoaming property of the detergent, it cannot be mixed uniformly, which causes a decrease in storage stability.

Therefore, in the present invention, the cleaning / drying enhancer composition as an auxiliary cleaning component described above effectively exerts its predetermined cleaning / drying performance, maintains safety corresponding to non-dangerous substances, and It is an object of the present invention to provide a composition which maintains uniform solubility or uniform dispersibility and storage stability, including the case where a silicone-based antifoaming agent is added.

[0009]

In order to achieve the above object, the present invention provides a washing and drying enhancer composition for a dishwasher,
The following configuration was adopted. That is, it is constituted in a state separated from the liquid, powdery or solid main cleaning agent, and as a supplementary cleaning component used together with the main cleaning agent during the cleaning operation, 5% by weight to 90% by weight of a low-foaming non-foaming agent 5 to 90% by weight of one or more polyhydric alcohols and / or one or two or more organic solvents of glycol ether, and 5 to 50% by weight It is characterized by comprising the following water.

[0010] The washing and drying enhancer composition can be obtained by mixing the low foaming surfactant, the organic solvent and water at normal temperature.

The low-foaming surfactant is 10% of the surfactant.
An aqueous solution having a cloud point of 40 ° C. or less. As the low-foaming surfactant, for example, polyoxyalkylene monoalkyl ether represented by the following chemical structural formula

Embedded image [R is an alkyl group having 12 to 14 carbon atoms, X ≒ 5, Y ≒
3.5] or [R is an alkyl group having 13 to 1 carbon atoms
5, X ≒ 2, Y ≒ 4],

A polyoxyalkylene dialkyl ether represented by the following chemical structural formula:

Embedded image [R is an alkyl group having 8 carbon atoms, X ≒ 5],

Also, a polyoxyalkylene alkylphenol ether represented by the following chemical structural formula:

Embedded image [R is an alkyl group having 9 carbon atoms, X ≒ 7, Y ≒ 7],

A pluronic block polymer represented by the following chemical structural formula:

Embedded image [Average molecular weight: 3500, EO content; 40 of total molecular weight]
%] Or [Average molecular weight; 3800, EO content; 10% of total molecular weight],

Further, a reverse stetronic block polymer represented by the following chemical structural formula:

Embedded image [Average molecular weight: 7740, EO content; 20 of total molecular weight]
%],

Also, a tetronic block polymer represented by the following chemical structural formula:

Embedded image [Average molecular weight; 3600, EO content; 10 of total molecular weight]
%],

Also, a reverse pluronic block polymer represented by the following chemical structural formula:

Embedded image [Average molecular weight; 3100, EO content; 20 of total molecular weight
%], And the like, but not limited thereto, and one or more of these may be used as a mixture.

The low-foaming surfactant can be incorporated in the washing and drying enhancer in an amount of 5% by weight or more and 90% by weight or less. If this amount is less than 5% by weight, the required amount of the auxiliary cleaning component with respect to the main cleaning agent increases during the cleaning operation. The reason is that, in order to effectively exhibit the washing and drying performance, that is, the washing action that supplements the washing action of the main detergent and the action of speeding up drying after washing and improving the finished state, it is necessary to mix a considerable amount of surfactant. It is necessary. Therefore, in this case, the size of the detergent product cannot be reduced, and the cost is high.
In addition, when the blending amount of the polyhydric alcohol or the like is increased, a flash point may be generated. The amount is 90% by weight
When the temperature exceeds the limit, a flash point occurs in itself, which corresponds to a dangerous substance, so that it is difficult to handle at the time of manufacture, supply, and the like.

As the organic solvent, one or more of polyhydric alcohols and one or more of glycol ethers can be used, and a mixture thereof can also be used.

Examples of the polyhydric alcohol include glycerin, polyglycerin, ethylene glycol, diethylene glycol, polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,4-butanediol, 1,5-pentanediol, sorbitol , Hexylene glycol,
Examples thereof include pentaerythritol, but are not limited thereto.

Examples of glycol ethers include ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether, ethylene glycol dimethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol methyl butyl ether, diethylene glycol diethyl ether, Propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, ethylene glycol propylene glycol monobutyl ether, 3
-Methyl-methoxybutanol or the like can be used, but is not limited thereto.

These organic solvents can be blended in an amount of 5% by weight or more and 90% by weight or less with respect to the washing and drying enhancer. The range of the compounding amount is the same for the mixture of the above-mentioned polyhydric alcohol and glycol ether. If this amount is less than 5% by weight, it will not be possible to effectively homogenize the solution and stabilize the storage of the washing and drying enhancer, and if the amount is 9% by weight.
If it exceeds 0% by weight, the effective amount of other components cannot be sufficiently incorporated, resulting in insufficient washing and drying effects and a flash point of itself.

Water can be incorporated in the washing and drying enhancer composition, for example, in an amount of 5 to 50% by weight as purified water. If this amount is less than 5% by weight, the flash point cannot be eliminated and it cannot be made non-hazardous.
On the other hand, if it exceeds 50% by weight, the composition becomes excessively moist and the composition solution cannot be sufficiently stabilized.

The washing and drying enhancer composition contains
A silicone-based antifoaming agent can be blended in order to improve the defoaming performance during the cleaning operation in combination with the main cleaning agent. As the silicone-based defoaming agent, in addition to the compound itself of the silicone resin (polysiloxane), a liquid agent of a water-soluble agent or a water-insoluble agent such as a polyether modifier or an alkyl modifier of the silicone resin can be applied. For example, a material containing dimethylsiloxane as a main component can be used.

According to the composition containing the silicone-based antifoaming agent, it can be safely used because it is chemically and physiologically inactive, and is suitable for washing dishes. When contained as a component of the agent composition, an effective defoaming function is continuously exhibited. The amount of the silicone-based defoaming agent is preferably 10% by weight or less as a pure component. 10% by weight
When the amount exceeds the above range, not only is the negative effect on the stabilization of the composition solution, but also the improvement of the defoaming effect cannot be expected so much, which is economically disadvantageous. Also 0.
If the amount is less than 05% by weight, the above-mentioned effects cannot be exhibited effectively. Further, the more preferable blending amount of the silicon-based antifoaming agent is uniform and stable in the solution composition.
Moreover, from the point that it can be used economically, 0.1 to 5
Weight percent.

The washing and drying enhancer composition contains
Other functional components such as a deodorant and an antistatic agent can be blended as long as the functions and effects of the present invention are not hindered.

In the washing operation, the washing and drying enhancer composition is used in a quantitative ratio of 10 to 40 parts by weight as a pure amount of the nonionic surfactant to 100 parts by weight of the active ingredient of the main detergent. It is preferred to use. If the amount is less than 10 parts by weight, the effect of enhancing washing and drying of tableware and the like becomes insufficient, and if the amount exceeds 40 parts by weight, the enhancing effect cannot be expected any more and economical. This is because it is disadvantageous.

The main cleaning agents include liquid, powdery and solid types. The liquid cleaning agents include potassium hydroxide, potassium carbonate, sodium tripolyphosphate, sodium hypochlorite, and water. And potassium hydroxide, potassium carbonate, sodium nitrilotriacetate and water as ingredients, and powdered detergents include sodium carbonate, sodium metasilicate, crystalline sodium triphosphate, sodium tripolyphosphate, Examples which include anhydrous sodium sulfate and chlorinated sodium isocyanurate as components are exemplified.

The powdery detergent and the solid detergent can be prepared in an aqueous state in advance, and can be automatically supplied to an automatic dishwasher. Also, in particular,
When the main cleaning agent is a liquid agent, it is possible to use the main cleaning agent and the cleaning and drying enhancer composition in the same container in a two-layer separated state. In this case, both agents are clearly separated into two layers in a standing state.

(Example 1) The washing and drying enhancer composition for a dishwasher according to an example of the present invention was prepared according to the following formulation Nos. 1 to No. 1 in Table 1.
Twelve blended components were prepared by mixing at room temperature.

[Table 1]

In Table 1, the polyoxyalkylene monoalkyl ether is represented by the following chemical formula.

Embedded image In the formula, R is a saturated secondary alkyl group having 10 to 12 carbon atoms, x is an average value of about 5 moles of ethylene oxide added,
y is an average of about 6 moles of propylene oxide added. Its cloud point is 16 ° C. The polyoxyalkylene dialkyl ether is polyoxyethylene octyl butyl ether, and its cloud point is 0 ° C. or less. In addition, as Comparative Examples, Formulation Nos. 13 to 23
Was prepared in the same manner as described above by using each component of the above.

In Table 1, the formulations No. 7, No. 11, No.
12, No. 14 and No. 20 used as the silicone-based defoaming agent were the preparations shown in the following Table 2 containing a silicone resin compound as a main component.

[Table 2]

For each of these compositions, a cold (−7)
C), at room temperature (20 ° C.) and at warm temperature (45 ° C.), storage stability and flammability were tested. The results are shown in Table 1.

The storage stability is as follows. Each composition is placed in a closed container and placed in a thermostat at a predetermined temperature.
The sample was allowed to stand for a period of one month, and the presence or absence of a change in appearance was checked. That is, when the transparent or uniform dispersion state was maintained, it was evaluated as "good", and when liquid layer separation or a precipitate occurred, it was evaluated as "bad". In addition, the flammability was determined by measuring the flash point using a Cleveland open-type flash point measuring instrument and the following criteria. That is, when the measurement was impossible or the flash point did not come out, it was evaluated as ○, and when the flash point came out, ×.

According to the results of storage stability and flammability, the results of Formulation Nos. 14 to 18 show that when the blending amount of the low-foaming surfactant exceeds 90% by weight, the storage stability is low. Properties cannot be sufficiently achieved, and the formulation No. 21 and N
From the result of o.22, it is understood that the storage stability is insufficient even when the amount of water exceeds 50% by weight.

According to the results of Formulations No. 13, No. 14, No. 19 and No. 20, it is flammable when the amount of water is less than 5% by weight. Also, from the result of Prescription No. 23, it is understood that the composition becomes flammable even when the blending amount of the polyhydric alcohol exceeds 90% by weight.

On the other hand, it can be seen that the compositions according to the present invention of Formulation Nos. 1 to 12 have excellent storage stability in any case and can be constituted as non-flammable non-dangerous substances.

(Example 2) 10% by weight of 48% potassium hydroxide, 20% by weight of anhydrous potassium carbonate, 10% by weight of sodium nitrilotriacetate (monohydrate) and 60% by weight of purified water were mixed to form a liquid. Detergent A was prepared.

The main cleaning agent A and the cleaning and drying enhancer (formulation N
o.1, No. 5, No. 7, or No. 11) were used together with the mixing amount shown in the following Table 2 at the time of the washing operation by the washing operation method described later.

[Table 3]

The numerical units in Table 3 above are parts by weight, and for each prescription of the washing and drying enhancer, the pure content of the nonionic surfactant is based on 100 parts by weight of the main cleaning agent A. The mixing amount was about 10 parts by weight. (A) Cleaning operation method Badge-type automatic dishwasher (WM3 manufactured by Daikin)
0 type), washing water (water temperature: 57 ± 3 ° C.) is previously supplied into the washing tank (24 liter capacity), and the main cleaning agent is added thereto to obtain a concentration of about 0.2% by weight. A solution was prepared, and a washing / drying enhancer was further added to the solution to sufficiently dissolve the solution.

Next, a cup to be cleaned, which will be described later, is placed at a predetermined position on the rack so that the mouth thereof faces downward. On the other hand, cleaning (1 minute 45 seconds) and rinsing (15 seconds, water temperature; (± 4 ° C., 4.5 l) and standing (2 minutes) were defined as one cycle, and the glass to be washed was replaced every cycle, and this cycle was repeated five times in total. It should be noted that the detergent is not replenished in this continuous washing, so that the above-mentioned washing liquid is diluted every cycle.

(B) Preparation of Cup to be Washed Pretreatment of Cup A glass cup is immersed in an alkaline cleaning agent (5% aqueous solution) for about 2 hours. Then, after pulling up the cup and rinsing with hot water, the dryer (100
(Constant temperature) for 1 hour. Thereafter, it was allowed to cool to room temperature.

Preparation of Dirty Flour (10 g) was added to purified water (90 g), gelatinized by keeping at 80 to 90 ° C. for 10 minutes, and then allowed to cool. In addition, tempura oil, butter, egg yolk, and milk were each added to the beaker in order of 20 g, and 20 g of the gelatinizing solution was added to the beaker, and the mixture was added to 30 to 40 g.
The mixture was stirred with a round brush under the condition of ° C., and it was confirmed that the butter was completely dissolved.

Application of Dirty Approximately 1 g of the above-described composite soil material was spirally applied to the cup after the above-mentioned pretreatment from the vicinity of the lip to the bottom on the inner wall surface of the cup using a circular brush. .

Further, the cup to be cleaned to which the dirt was adhered was subjected to the above-mentioned cleaning operation within 12 hours or more and 24 hours after the application.

The results of the cleaning operation as described above are shown in Table 4 below for the degree of cleaning and the degree of spot generation. Table 4 shows changes in the cleaning solution concentration, changes in the PH value, and the degree of foam suppression.

[Table 4]

The evaluation criteria for each cleaning result are as follows. (i) Regarding the degree of cleaning against artificial dirt, ◎ indicates that no dirt is attached, ○ indicates that dirt is slightly adhering, Δ indicates that dirt is slightly adhering, and × indicates that dirt is not adhering. When there is more adherence. (ii) Regarding the degree of adhesion of the water spot, ◎ indicates that no adhesion is observed, は indicates that the adhesion is slight, Δ indicates that the adhesion is slight, and X indicates that the adhesion is large. ,.

(Iii) The measurement of the degree of foam suppression was performed by the following operation. In the case of no contamination, a washing solution having a concentration of 0.2% by weight was prepared in the washing tank of the automatic dishwasher.
After confirming that the temperature is 1 to 43 ° C., a washing step for 1 minute is performed, and the state of the liquid level is confirmed.

When there is dirt, a washing solution corresponding to a concentration of 0.2% by weight is prepared in the washing tank of the automatic dishwasher,
After confirming that the solution temperature was 51 to 53 ° C., the L-sized egg was well dissolved in the washing solution, and 10 g of the egg was added as dirt. This was subjected to a one-minute washing step, and the state of the liquid level was checked immediately.

In the above and cases, the height of the generated foam from the liquid level was measured, and measured according to the following criteria. In other words, when the height of the bubble is less than 10 mm, ○ 10 mm or more and 30 mm
When it was less than △, and when it was 30 mm or more, it was ×.

From the results of Example Nos. 1 to 4 shown in Table 4, the cleaning and drying enhancer of the present invention was used in combination with the main cleaning agent as an auxiliary cleaning component in comparison with the comparative example of Example No. 5. When it does, while exhibiting an excellent cleaning effect on the degree of cleaning and the degree of occurrence of spots, it is good about the degree of foam suppression,
Also, it can be confirmed that it can be used under a low PH value. As can be seen from the results of the degree of spot generation, when the washing and drying enhancer of the present invention was used in combination, the washed cup had excellent quick-drying properties and good dry finishing effect.

Example 3 21% by weight of sodium metasilicate (pentahydrate), crystalline sodium triphosphate (decahydrate)
6% by weight, sodium tripolyphosphate (anhydrous) 14.5
The powdered main cleaning agent B was prepared by mixing 8% by weight of soda ash, 49% by weight of anhydrous sodium sulfate and 1.5% by weight of chlorinated sodium isocyanurate.

The main cleaning agent B and the cleaning and drying enhancer (formulation N
o.1, No. 5, No. 7, or No. 11) were used together with the mixing amounts shown in the following Table 5 by the same washing operation method as in Example 2 during the washing operation.

[Table 5]

The numerical units in Table 5 are parts by weight,
Further, with respect to each prescription of the washing and drying enhancer, the pure component of the nonionic surfactant was mixed in an amount of about 10 parts by weight with respect to 100 parts by weight of the main cleaning agent B.

The cleaning results obtained by this cleaning operation are shown in the following Table 6 with respect to the cleaning effects after cleaning and the degree of occurrence of spots as in Example 2. Table 6 shows changes in the cleaning solution concentration, changes in the PH value, and the degree of foam suppression.

[Table 6]

From the results of Examples Nos. 6 to 9 shown in Table 6, in comparison with the comparative example of Example No. 10, the cleaning and drying enhancer of the present invention was used in combination with the main cleaning agent as an auxiliary cleaning component. In this case, it can be confirmed that the cleaning effect is excellent with respect to the degree of cleaning and the degree of occurrence of spots, that the degree of foaming is good, and that the composition can be used at a low PH value. As can be seen from the results of the degree of spot generation, when the washing and drying enhancer of the present invention was used in combination, the washed cup had excellent quick-drying properties and good dry finishing effect.

[0057]

Since the present invention is configured as described above, the following effects are exhibited. ADVANTAGE OF THE INVENTION According to this invention, since the washing | cleaning drying enhancer composition as an auxiliary washing | cleaning component can be comprised as a non-dangerous substance, it has the effect of being safe and easy to use in handling.

In addition, since it is obtained as one that retains storage stability together with uniform solubility or uniform dispersibility,
It can be used efficiently and economically as a product of constant quality over a long period of time. Also, when a silicone-based antifoaming agent is blended, uniform dispersibility and storage stability can be ensured, so that the composition can be formed as having an excellent defoaming effect.

In addition, when used in combination with a liquid or powdered main cleaning agent, excellent washing effects are eliminated, and the formation of water spots is eliminated. It can be effectively applied as a component.

Further, since it can be used at a low PH value, it is possible to prevent the occurrence of troubles such as etching on glass tableware, and also to prevent the occurrence of pollution.

Claims (5)

[Claims] 1. A low-bubble content of 5% by weight to 90% by weight as an auxiliary cleaning component which is constituted in a separated state from a liquid, powdery or solid main cleaning agent and is used together with the main cleaning agent during a cleaning operation. A nonionic surfactant, 5 to 90% by weight of one or more polyhydric alcohols and / or one or two or more organic solvents of glycol ethers, and 5 to 50% by weight. CLAIMS 1. A washing and drying enhancer composition for a dishwasher, which comprises water by weight or less. 2. The low-foaming nonionic surfactant is a polyoxyalkylene monoalkyl ether, a polyoxyalkylene dialkyl ether, a polyoxyalkylene alkyl phenol ether, a pluronic block polymer, a reverse stetronic block polymer, or a tetronic block. The cleaning and drying enhancer composition for a dishwasher according to claim 1, wherein the composition is at least one selected from a polymer and a reverse pluronic block polymer. 3. The polyhydric alcohol is glycerin, polyglycerin, ethylene glycol, diethylene glycol,
Polyethylene glycol, propylene glycol, dipropylene glycol, polypropylene glycol, 1,
Washing and drying for a dishwasher according to claim 1 or 2, wherein the washing and drying are one or more kinds selected from 4-butanediol, 1,5-pentanediol, sorbitol, hexylene glycol and pentaerythritol. Composition. 4. The glycol ether is ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, ethylene glycol monohexyl ether,
Ethylene glycol dimethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, diethylene glycol methyl butyl ether, diethylene glycol diethyl ether, propylene glycol monopropyl ether, propylene glycol monobutyl ether, dipropylene glycol monomethyl ether, ethylene glycol propylene glycol monobutyl ether and 3-methyl-methoxy The cleaning / desiccant composition for a dishwasher according to claim 1, 2 or 3, wherein the composition is at least one selected from butanol. 5. A silicone-based antifoaming agent having a pure content of 0.1%.
The washing / drying agent composition for a dishwasher according to claim 1, 2, 3 or 4, wherein the composition is blended in an amount of from 05% by weight to 10% by weight.