JPS61291694A - Detergent - 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] [Industrial application field] The present invention relates to a cleaning agent capable of cleaning carbonized oil stains.

More specifically, carbonized oil stains on heat cooking equipment,
This invention relates to a cleaning agent that quickly removes grease and the like accumulated in ducts and gives a beautiful luster to metal surfaces after cleaning.

[Conventional technology and its problems]

Conventionally, known cleaning agents of this type include: ■Weak cleaning power.

■The object to be washed loses its luster after washing.

■If cleaning is carried out at high temperatures, the cleaning solution will quickly dry up and become difficult to work with, or the cleaning solution will scatter, creating a danger.

■If the item being washed is made of iron, stainless steel, or copper, it will corrode.

■The safety of the cleaning agent is insufficient.

There were drawbacks such as.

On the other hand, JP-A-55-16011 describes the use of sodium gluconate, sodium dioxyacetate, and sodium ethylenediaminetetraacetate as metal brighteners.

Although all of them are effective to some extent, they are not satisfactory.

Further, Japanese Patent Application No. 128954/1983 describes the use of triethanolamine as a metal brightener, but triethanolamine has the disadvantage that it turns brown when stored for a long period of time and its effectiveness is reduced.

The object of the present invention is to provide a cleaning agent which eliminates the above-mentioned drawbacks.

[Means for solving problems]

The cleaning agent of the present invention includes: Alkali metal hydroxide 5-30 wt% Brightening agent for making the metal surface glossy 1-50 Polyhydric alcohol 5-60 Surfactant
0.5-10 and water
It is characterized by consisting of the remainder.

As the brightening agent for producing luster on the metal surface, one or more of 1 or 2a can be selected from the group consisting of sorbitol, mannitol, sorbitan, sorbite, mannitan, sodium glucoheptonate, and glucono delta lactone. .

The above-mentioned sorbitol and mannitol are commonly used as sweeteners, etc. Of these, sorbitol is commercially available as a powder or a 70% aqueous solution, and is relatively inexpensive. . Furthermore, these are recognized as safe as food additives and have merits compared to the above-mentioned triethanolamine.

In addition, sorbitan, sorbite, and mannitan are used as raw materials for surfactants.

When cleaning objects using the composition of the present invention containing sorbitol, mannitol, sorbitan, sorbite, and mannitan as metal brighteners, the stain removal rate and the gloss of the metal surface were unmatched by conventional methods. Even the present inventors could not have predicted that such a remarkable effect would be achieved.

Furthermore, sodium glucoheptonate has a higher level of stability compared to conventionally known sodium gluconate, hydroxycarboxylate salts, aminocarboxylate salts, and hydroxyaminocarboxylate salts such as sodium citrate, sodium ethylenediaminetetraacetate, and dihydroxyethylglycine. It also has an extremely excellent effect on the luster of metal surfaces.
I couldn't have predicted it.

Among the brighteners mentioned above, sorbitol and sodium glucoheptonate are particularly effective.

Among the essential ingredients, alkali metal hydroxides also have the function of decomposing oil stains and protein stains and peeling them off from the items being washed).
Potassium hydroxide, sodium hydroxide or a mixture thereof is preferred.

Further, the polyhydric alcohol has the function of preventing the detergent solution from drying up in a short period of time, and from the viewpoint of effectiveness and safety, propylene glycol, glycerin, or a mixture thereof is preferable.

Surfactants act as penetrants that allow other cleaning ingredients to act quickly, prevent dirt from re-adhering to the items that have been removed from the items being washed, and are resistant to alkali. , those having excellent heat resistance are preferred, and anionic surfactants containing glycine, alanine, and betaine, imidazoline type amphoteric surfactants, and phosphate ester type surfactants are preferred.

These activators can be used in an amount of 1 fiJ or in combination of two or more.

The amount of alkali metal hydroxide used in the present invention is 5
If it is less than % (% is weight %, the same applies hereinafter), there will be no cleaning power, and if it exceeds 50%, it will be dangerous, and the viscosity of the product will be too high, causing it to spread when applying the cleaning agent and brushing. 5.
Blend in the range of ~50%. If the brightener is less than 1%, it will not be effective, and if it exceeds 50%, the effect will not increase even if added, or the balance of properties of the entire cleaning composition will be lost, so it should be added in a range of 1 to 50%. . Note that it is particularly preferable that the brightener is added in an amount of 5% or more.

If the polyhydric alcohol is less than 5%, no evaporation suppressing effect can be expected, and if it exceeds 60%, there will be problems similar to those of brighteners, so it is blended in a range of 5 to 60%. The surfactant is 0.
If it is less than 5%, there is no penetrating power, and if it exceeds 10%, there are problems similar to those of brighteners, so it is blended in a range of 0.5 to 10%.

In addition, the cleaning composition of the present invention may optionally contain hydroxyaminocarboxylic acid salts such as 1-hydroxyethylethylenediaminotriacetate and dihydroxyethylglycine, and polymers and copolymers such as polysodium acrylate and polysodium 7-malate. , hydroxycarboxylic acid salts such as sodium gluconate.

Also, by adding appropriate amounts of kaolinite, talc, carboxyethyl cellulose, etc., the viscosity can be increased and it can be turned into a paste-like cleaning agent.

〔Example〕

Examples and comparative examples are shown below, but the present invention is not limited thereto.

Mixed stains from beef, gyoza, and fried noodles are removed using an iron griddle (GR-96T manufactured by Kitazawa Sangyo, surface area 0.587 m2)
After cooking on top and depositing carbonized dirt, the griddle is cooled to below 100°C. Next, the composition shown in Table 1 is applied onto the griddle, brushed with a brush for 1 minute, and then thoroughly rinsed with water. The evaluation criteria are as follows.

Dirt removal effect: The rate of stain removal from the griddle surface was expressed numerically.

Gloss of the surface after cleaning; ○ The metal is shiny 0 6 Yellow rust occurs on the surface, and the gloss is poor × Rust occurs on the entire surface of the griddle, and in some cases, it turns black.

stability of the composition; ○ Stable after being left at room temperature for one month.

*After being left at room temperature for one month, it changes color, separates, and solidifies.

Workability; ○The brush glides well when brushing, making it easy to work.

×When brushing, the brush is not smooth and there is a pungent odor.

The results are shown in Table 10

Claims (1)

[Claims] 1. A cleaning agent consisting of: 1 alkali metal hydroxide 5-30% by weight brightener 1-50% by weight polyhydric alcohol 5-60% by weight surfactant 0.5-10% by weight water the balance. 2 The brightener is sorbitol, mannitol, sorbitan,
The cleaning agent according to claim 1, which is one or more compounds selected from the group consisting of sorbite, mannitan, sodium glucoheptonate, and glucono delta-lactone. 3. The cleaning agent according to claim 1, wherein the alkali metal hydroxide is sodium hydroxide, potassium hydroxide, or a mixture thereof. 4. The cleaning agent according to claim 1, wherein the polyhydric alcohol is propylene glycol, glycerin, or a mixture thereof. 5 The surfactant is one or more surfactants selected from the group consisting of glycine type, alanine type, betaine type, imidazoline type amphoteric surfactants, or phosphate ester type anionic surfactants. A cleaning agent according to claim 1.