JPH02151696A - Foamable powdery kitchen detergent composition - Google Patents

Abstract

PURPOSE:To obtain the title composition which needs only immersion to exhibit a cleansing effect without the necessity for any mechanical force by using a specified acidic substance and an alkaline substance which react with each other to foam and an active detergent component as constituents. CONSTITUTION:The title composition comprises an active detergent component, acidic particles which have a mean particle diameter (A) of preferably 300-1000mum, and contain an acidic substance (e.g. boric acid), and alkaline particles which have a mean particle diameter (B) and contain an alkaline substance (e.g. NaHCO3), wherein said acidic particles and alkaline particles react with each other to foam, A is greater than B by 100-500mum, the total amount of said acidic substance and alkaline substance is preferably 10-40wt.% based on the composition, and the pH of the composition when diluted 150-fold is 5.0 to 9.0.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a foaming type kitchen powder cleaning composition that does not require mechanical force and exhibits its cleaning effect just by soaking.

With major changes in lifestyles, more and more housewives are using their time for housework efficiently, and one way to do this is to soak and wash dishes.

However, conventional liquid kitchen detergents can only contain small amounts of Na + salt and K + salt, which have the effect of lowering interfacial tension, and it has been impossible to remove various types of stains from dishes simply by soaking them. . It was also impossible to add bleach.

On the other hand, powder type kitchen detergents are also commercially available as immersion type kitchen detergents, but the reality is that they do not provide sufficient cleaning effects.

The present invention is a foaming type kitchen powder cleaning agent that exhibits sufficient cleaning power against various types of stains, can provide a high bleaching edge, and can be washed after soaking. A composition is provided.

The foaming type kitchen powder cleaning composition of the present invention contains an acidic substance and an alkaline substance that foam by reacting with each other, and a cleaning active ingredient, and has an average particle size A of the acidic particles containing the acidic substance. and the average particle diameter B of alkaline particles containing an alkaline substance, A>B, and the difference is 100 to 5.
00 μl, and the final pH at 1/150 dilution is in the range of 5 to 9.

The present invention will be explained in more detail below.

When a cleaning composition containing a mixture of acidic particles and alkaline particles is dissolved in water, the cleaning composition is dispersed throughout the soaking solution while foaming.

The average particle size A of acidic particles is larger than the average particle size B of alkaline particles L (A>B), and the difference (A-B) is 1
00 to 500 μn+, preferably 150 to 300 μm, first, the alkaline particles are dissolved first and the detergent solution becomes an alkaline atmosphere. As a result, the coexisting cleaning active ingredients exhibit a high bleaching effect and a desorption effect on composite stains such as mayonnaise stains. After that, the particles gradually dissolve in water and finally reach a pH of 5.0 to 9.0.
Preferably, the pH is 6.0 to 8.5, and other stains are removed and cleaning is completed. If the difference in particle size between the acidic particles and the alkaline particles is 100 μm, no effect will be achieved, whereas if it exceeds 500 μm, the cleaning liquid will remain alkaline for too long, which is undesirable.

Also, when acidic particles are larger than alkaline particles,
No bleaching effect can be expected, and the average particle size of acidic particles is
Approximately 300-1000μ is suitable.

As the alkaline substance constituting the foaming system, sodium hydrogen carbonate, sodium carbonate, crystalline sodium silicate, etc. are used. Further, as the acidic substance, boric acid, citric acid, malic acid, etc. are used. It is preferable that the total amount of these acidic substances and alkaline substances is about 10 to 40% by weight in the foamed kitchen powder cleaning composition of the present invention. If this amount is too small, the foaming dispersibility and the ability to adjust the pH of the cleaning solution differently between the initial stage and the middle stage of cleaning will be insufficient.

On the other hand, if the blending amount is too large, the blending amount of the cleaning active ingredient will be relatively reduced, which is not preferable. In addition, acidic substances and alkaline substances have a final pH of 5.0 to 5.0 when the cleaning composition of the present invention is dissolved in 150 times as much water as described above.
It also has the effect of adjusting to 9.0. If the pH value is less than 5.0, the composite stain will not be removed sufficiently and the bleaching effect will not be achieved. On the other hand, if the pH exceeds 9.0, the ability to remove oily dirt will decrease.

The cleaning composition of the present invention may contain surfactants, electrolytes, builders, bleaches, enzymes, binders, perfumes, etc. as cleaning active ingredients. In particular, it is suitably used in compositions containing enzymes, and in addition to acidic substances and alkaline substances, the following (a) t (b
) t Contains component (c), and contains the branched anionic surfactant of component (a) and Na+ ion, K+ in the entire composition.
It is preferable that the molar ratio to the total amount of ions is 1/4 or less.

(a) Branched anionic surfactant: 5 to 40% by weight.

(b) An inorganic or organic electrolyte with Na+ or Ni+ as a counter ion.

(e) Bleach: 0.5-30% by weight.

(a) Preferred specific examples of the branched anionic surfactant include those represented by the following general formulas (1) to (V), which may be used alone or in combination of two or more.

In the structural formula below, n, m≧0. R = saturated or unsaturated hydrocarbon group 1M = metal [1/dM in the case of polyvalent (d))
respectively.

1) Alkylbenzene sulfonate (LAS) 2) Vinylidene olefin sulfonate (VOS) 3) Inner olefin sulfonate (IO5) 4) Dialkyl sulfosuccinate (AOT) 5) Paraffin sulfonate (ps) (a) The branched anionic surfactant may contain 5 to 4
It is blended in an amount of 0% by weight, preferably 10 to 30% by weight. If the blending amount is less than 5% by weight, the cleaning power will not be sufficient;
If it exceeds 0% by weight, granulation becomes difficult and is not suitable.

By using a branched anionic surfactant as the surfactant, a composition with high permeability can be obtained. α−
Unbranched anionic surfactants such as olefin sulfonates cannot achieve this effect;
By blending component (b), an inorganic or organic electrolyte, with this, the surface tension can be lowered. In addition, since the pH of the composition is controlled to 5.0 to 9.0, high detergency can be achieved, and even high bleaching blades can be achieved.

(b) Inorganic and organic electrolytes with Na'' and + as counterions include sodium sulfate, potassium sulfate, sodium chloride, and crystalline sodium silicate.

There are many types of sodium citrate, sodium malate, etc., and these can be used alone or in combination of two or more. In addition, as foaming alkaline substances, sodium hydrogen carbonate, sodium carbonate, potassium hydrogen carbonate,
When using sodium or potassium salts such as potassium carbonate.

These also act as a source of Na+ and Ni+ ions.

Component (b) Na'', + electrolyte is component (a) component branched anionic surfactant and Na contained in the entire composition.
The molar ratio of the total amount of + ions and +1 ions is 1/
4 or less, preferably 1/10 or less,
Thereby, the surface tension of the branched anionic surfactant can be lowered. If the molar ratio with
Even if Na''+electrolyte is blended so that the Na''+electrolyte becomes smaller than 0, the interfacial tension lowering effect is already saturated because the Na''+electrolyte is too large.

(c) As the bleaching agent, sodium percarbonate, sodium perborate, dichloroisocyanuric acid, etc. are used, and the amount thereof is 0.5 to 30% by weight, preferably 1 to 20% by weight. If the blending amount is less than 0.5% by weight, no effect can be expected; on the other hand, even if the blending amount exceeds 30% by weight, the bleaching blade is saturated.

As mentioned above, the cleaning composition of the present invention has a final pH of 5.
The pH is adjusted to between 0 and 9.0.

This can be done by adjusting the amount of the foaming acidic substance and alkaline substance. In addition, 1. This can be done by adjusting the amount of acidic compounds and alkaline compounds in the cleaning active ingredient. Specifically, in the salt used as the inorganic or organic substance of component (b), neutral salt and This can be carried out by adjusting the amount of alkaline salt used.

Furthermore, if necessary, salts other than salts may be added to acids, alkaline substances, and Na that do not constitute the foaming system.

The cleaning composition of the present invention may further contain talc, kaolin, white carbon, zeolite, Ti
Builders such as O, etc., binders for granulation such as polymethylsilanol, polyacrylic acid, polyvinyl alcohol, polyethylene glycol, enzymes, fragrances, bleach activators, pigments, etc. can be blended.

The foaming type kitchen powder cleaning composition of the present invention can be prepared, for example, by adding a part or all of the cleaning active ingredients other than bleach to an acidic substance and/or an alkaline substance, and then spraying each separately. Dry.

It is obtained by granulating by transfer granulation, extrusion granulation, etc. to obtain acidic particles and alkaline particles, respectively, and then mixing these into powder. Note that it is desirable that the bleaching agent is further mixed in powder form separately. Furthermore, if necessary, the particles can be sized or powdered with enzymes and the like.

According to the foaming type kitchen powder cleaning composition of the present invention, acidic particles and alkaline particles are blended as foaming agents in a specific particle size relationship, and the final pH is 5.0. By setting the range of PI to 9.0, the cleaning agent composition can be spread throughout the entire cleaning solution with one foaming, and the cleaning solution becomes alkaline in the early stages of cleaning, and after the middle stage of cleaning, the cleaning composition becomes alkaline (PI (5.0 to 9.0)). Therefore, the cleaning power and bleaching effect on various types of dirt due to the coexisting cleaning active ingredients can be enhanced.

It is particularly useful when used with cleaning active ingredients containing bleach.

(a) branched anionic surfactant, (b) inorganic or organic electrolyte with Na''K+ as a counterion, and (c) 2m
If it contains l+ whitening agent, it will show excellent detergency against various types of dirt just by soaking, and will also exhibit a high bleaching power.

Therefore, soaking and washing can remove various types of dirt from dishes in a short time, and the rest can be finished by simply rinsing them, freeing up time for cleaning after the kitchen to be used for other tasks. It becomes possible to use it efficiently. In addition, the time spent in contact with cleaning liquid or water is shortened, reducing the risk of rough hands.

Hereinafter, the effects of the present invention will be specifically explained with reference to Examples, but prior to this, the evaluation method used in the Examples will be described.

"U" [inryoku nu plain woven cotton cloth (#100) with commercially available detergent (Alpha; trade name)
1 at 50°C at a bath ratio of 30 times using a washing machine.
After washing for 5 minutes, dehydrate for 5 minutes. Wash and dehydrate using the same procedure again. Next, the overflow rinsing and dehydration operations are repeated a total of five times, and then air-dried to obtain a pretreated cloth.

Next, boil a 2% black tea solution for 5 minutes, soak the pretreated cloth in it at a bath ratio of 30 times, boil for 30 minutes, and then boil for 40 minutes.
After being left at ℃ for 30 minutes, it was air-dried to obtain a test cloth (black tea cloth).

The kitchen powder cleaning compositions of Examples and Comparative Examples were
C. and 3" DH hardness water at a concentration of 200 ppm, a black tea cloth is immersed in the water at a bath ratio of 300 times, and left for a predetermined time (30 minutes).

The test cloth treated in this way was dehydrated for 1 minute in a washing machine.
After 1 minute of overflow rinsing and 1 minute of dehydration, the cloth is dried by ironing to obtain a bleached cloth.

The reflectance of the pretreated cloth, black tea cloth, and bleached cloth was measured using a photoelectric reflectance photometer (ELREPHO, manufactured by Carl Zeiss), and the bleaching edge was determined by the following formula.

60m of each 30g of soybean oil and beef tallow specified in the Japanese Pharmacopoeia
After dissolving in Q chloroform, Oil Red 0.1
Add g and mix well to make a stain solution. Contaminate the glass plate by immersing it in this solution for 3 hours at a temperature of 25 °C.
Air dry for 0 minutes or more to remove chloroform and create dirt pieces (60 to 80 mg of dirt/one piece).

The kitchen powder cleaning compositions of Examples and Comparative Examples were heated at 25°C.
The active agent was added to 700μQ and 3”DH water to give an active agent concentration of 400ppm.

Six pieces of dirt were immersed in this solution for 30 minutes, taken out, air-dried, weighed, and the oil removal rate after washing was calculated using the following formula to determine the cleaning power.

Cleaning power (%) = (1-w”-w)X100W, -W
.

W, weight of glass plate W□: weight of glass plate after contamination W,: weight of glass plate after cleaning and air drying i
゛ ° Apply mayonnaise, which is a complex of protein and lipid, evenly on a glass plate and air-dry it at a temperature of 25°C for 30 minutes or more to create dirt pieces (stain amount: 140-160a + g/
1 piece).

The kitchen powder cleaning compositions of Examples and Comparative Examples were heated at 25°C.
7QOts (activator concentration 400p in 1,3″DH water)
pm, 6 pieces of dirt were immersed in this solution for 30 minutes, taken out, air-dried, weighed, and the combined dirt removal rate after washing was calculated using the following formula to determine the cleaning power. And so.

-W Cleaning power (%) = (1-W Eh.) x100W0 Weight of glass plate Wl: Weight of glass plate after contamination W2: Weight loss of glass plate after cleaning and air-drying - ■ Shown in Table 1 below Among the components, a surfactant was added to each of the acidic substance and the alkaline substance, and the mixture was separately granulated using an extrusion granulator to obtain particles having the indicated particle size. Each of these particles was blended with bleach, white carbon, and zeolite and flavored to obtain a powder detergent composition for kitchen use.The cleaning power and bleaching blade were measured and the results are shown in Table 1. .

(Margin below)

Claims (1)

[Scope of Claims] 1. An acidic substance and an alkaline substance that react with each other to foam, and a cleaning active ingredient, and the average particle size A of the acidic particles containing the acidic substance and the average particle size of the alkaline particles containing the alkaline substance. A>B, the difference is in the range of 100 to 500 μm, and the final pH at 1/150 dilution is in the range of 5.0 to 9.0. Foaming type kitchen powder cleaning composition. 2. As cleaning active ingredients, (a) branched anionic surfactant: 5 to 40% by weight, (b) inorganic or organic electrolyte with Na^+ or K^+ as a counterion, and (c) bleach: 0 .5 to 30% by weight, and the molar ratio of component (a), the branched anionic surfactant, to the total amount of Na^+ ions and K^+ ions in the entire composition is 1/4 or less. The foaming type kitchen powder cleaning composition according to claim 1, characterized in that: