JPS61296098A - Solid 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 (Field of Industrial Application) The present invention relates to a solid detergent that can easily clean strong oily stains adhering to, for example, hard surfaces.

(Prior art) Liquid detergents made by dissolving glycol ethers and caustic alkalis in water and blending hydrodrops and surfactants are extremely effective in cleaning oils and oil-polymerized stains. Known as a powerful cleaning agent.

(Problem to be solved by the invention) However, this liquid detergent is effective in a uniform liquid state, and if it is separated into glycol ether and caustic alkali aqueous solution, it will no longer be able to demonstrate its excellent cleaning power. Can not.

However, since glycol ether and caustic alkali aqueous solution are originally compatible with each other, various hydro-ops are added to make them a homogeneous aqueous solution.

However, even if a hydrodrope is added as mentioned above, a homogeneous aqueous solution cannot be obtained unless the water content is maintained at about 70% or more, and the water content is usually about 90%9, so it is not effective. There will be a large amount of water that does not have a cleaning effect on the cleaning ingredients.

In addition, since the above-mentioned cleaning agent is an alkaline aqueous solution, it does not dissolve even if an antifoaming agent is added and cannot function as an antifoaming agent. This requires a complicated operation in which a foaming agent must be added.

On the other hand, to clean plastic containers contaminated with oil, exhaust carbon, and dust, they must be immersed in a high-temperature, highly concentrated caustic soda aqueous solution containing glycol ether and surfactants for a long period of time, and then manually scrubbed. It could not be cleaned by automatic cleaning using the jet pressure of an automatic cleaning machine.

In view of the above circumstances, it is an object of the present invention to provide a solid detergent comprising 100 active ingredients.

A further object of the present invention is to provide a cleaning agent that can easily wash off strong oily stains adhering to hard surfaces such as plastic containers.

(Means for Solving the Problems) In order to solve the above problems, the inventors of the present application have conducted intensive research and found that caustic alkali and water-soluble alkanolamines, or caustic alkali and water-soluble alkanolamines, and water-soluble glycols It has been discovered that the desired solid detergent can be obtained by mixing it with ether.

When solid caustic alkali and liquid water-soluble alkanolamine or water-soluble alkanolamine or water-soluble glycol ether are mixed, even though they generate heat and become paste-like, if left for a certain period of time, the caustic alkali and water-soluble alkanolamine or water-soluble glycol ether mix together. The water-soluble alkanolamine and water-soluble glycol ether exist together in the form of powder, granules, small lumps, large lumps, etc., and the surface is dry.

- In other words, if it remains liquid or pasty even after being left for a long time,
Alternatively, glycol ether remains attached to the surface and is not in a wet state, but instead becomes a dry solid on the surface that is a combination of caustic alkali and water-soluble alkanolamine, or water-soluble alkanolamine and water-soluble glycol ether. be.

Here, the caustic alkali includes lithium hydroxide, sodium hydroxide, and potassium hydroxide, among which sodium hydroxide is the most used. The caustic alkali may be in any form such as powder, beads, flakes, etc.

Water again? The alkanolamines include monoethanolamine, jetanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, triisopropanolamine, and the like.

The weight ratio of caustic alkali and water-soluble alkanolamine to form a solid is 15:1 to 1:5, preferably 1:1 to 1:5 by weight. It is 4.

Furthermore, water-soluble glycol ethers are those obtained by addition polymerizing alkylene oxide to a monohydric alcohol, and those which do not have alkylene oxide added thereto, but have both an ether bond and a hydroxyl group in the same molecule.

Addition polymerization of ethylene oxide to monohydric alcohols includes diethylene glycol methyl ether, polyethylene glycol methyl ether, monoethylene glycol ethyl ether, polyethylene glycol ethyl ether, monoethylene glycol propylene ether\polyethylene glycol probyl ether, monoethylene glycol butyl ether, Examples include 1-lyethylene glycol butyl ether, monoethylene glycol amino ether, polyethylene glycol amyl ether, and polyethylene glycol hexyl ether.

Examples of products obtained by copolymerizing propylene oxide with alcohols include monopropylene glycol methyl ether, dipropylene glycol methyl ether, tripropylene glycol methyl ether, tetrapropylene glycol methyl ether, monopropylene glycol ethyl needle, and tripropylene Glycol methyl ether, tetrapropylene glycol ethyl ether, monopropylene glycol propyl ether, dipropylene glycol purvyl ether, tripropylene glycol probyl ether, monopropylene glycol butyl ether, dibutetrapyrene glycol butyl ether, monobutylene glycol methyl ether, monobutylene Glycol ethyl ether, monobutylene glycol propyl ether, monoamylene gelicol methyl ether, monoamylene gelicol ethyl ether,
Examples include monoamylene glycol propyl ether, and the most commonly used are monoethylene glycol butyl ether and diethylene glycol butyl ether.
-296098(3) ether, 3-methyl-3-methoxybutanol, etc.

The mixing weight ratio of alkanolamine and glycol ether is suitably in the range of 1:9 to 9:1, and the mixing ratio is varied within this range depending on the application.

Furthermore, the ratio by which a caustic alkali and a mixed solvent of alkanolamine and glycol ether become solid by mixing them varies depending on the type of mixed solvent, but the weight ratio of the caustic alkali and mixed solvent is 15:1 to 1:5. Adashi,
Preferably it is 10:1 to 1:4.

The form of the solid obtained by mixing a caustic alkali and an alkanolamine or a mixed solvent of an alkanolamine and a glycol ether varies depending on the type and blending ratio of the alkanolamine or mixed solvent. If the blending ratio of alkanolamine or mixed solvent is small, a product close to the original caustic alkali can be obtained, but as it increases in size, it becomes swollen granular or small-sized lumps, and when it becomes even larger, the mixed becomes a -H slurry or paste, but if left alone, it becomes a large lump with the same shape as a hard plastic mixing container.

In the above-mentioned cases 1 and 2, the product can be packed into a packaging container in its original shape and made into a product.

In the third case, the slurry or paste is left to solidify in a container of a shape suitable for the product, or the product is made into a product by crushing a large lump and packing it into a packaging container. can do.

The solid detergent according to the present invention has a wide range of uses, and one or more other substances such as a sequestering agent, a hydrodrop, an antifoaming agent, and a surfactant may be added depending on each use. be able to.

In this case, up to 90% by weight of the caustic alkali may be replaced by the other substances mentioned above.

Here, the metal ion sequestering agents include the following condensed phosphates; alkali metal birophosphates, alkali metal tripolyphosphates, alkali metal hexametaphosphates, alkali metal polyphosphates, etc. .

Hydroxycarboxylic acid salts; alkali metal glycolates, alkali metal gluconates, alkali metal citrates, alkali metal tartrates, and the like.

Carboxylate; alkali metal oxydiacetate, alkali metal carboxymethyloxysuccinate, etc.

Aminocarboxylate; alkali metal ethylenediamine 4
Acetate, alkali metal nitrilotriacetate/alkali metal hydroxyethylethylenediamine triacetate, alkali metal diethylenetriamine pentaacetate, alkali metal triethylene hexaacetate, alkali metal hydroxyimino 2acetate
acetate, alkali metal hydroxyethylaminoacetate,
These include alkali metal glycine, alkali metal dihydroxyethylglycine, and the like.

Water-soluble resins; carboxymethyl cellulose/l-ose, polyacrylic acid, polymethacrylic acid, copolymers of acrylic acid and vinyl compounds, copolymers of maleic anhydride and vinyl compounds, maleic anhydride and ethylene copolymers, and alkali metal salts such as maleic acid polymers.

In addition, imidobis sodium sulfate and the like can also be used.

Although up to 90% by weight of the caustic alkali can be replaced by the metal ion sequestering agent, it is preferable to limit the substitution to 75% by weight in order to obtain a product with good detergency.

In addition, the antifoaming agents mentioned above include silicone oil and its emulsion, paraffin, petroleum oxide, alkyl phosphate ester, fatty acid, higher alcohol, alkylphenyl ethylene oxide, propylene oxide addition polymer, higher alcohol ethylene oxide addition polymer, These include ethylene oxide, propylene oxide block polymers, etc.

The blending ratio of the antifoaming agent is 0 to 5 weight π. This antifoaming agent is an absolutely necessary component when used as a detergent for spray-type automatic washing machines, but it is not necessary to add it during immersion cleaning or the like.

Examples of hydrodrops include xylene sulfonate, toluene sulfonate, lignin sulfonate, higher alcohol sulfate salt having 6 to 12 carbon atoms, and the like.

The blending ratio of hydrodrop is 0 to 15% by weight, and is unnecessary when the solid detergent is diluted with water by 50 times or more. Moreover, it is preferable to mix 15% by weight or more because the blending ratio of components necessary for cleaning becomes low. In addition, in this invention, since water-soluble alkanolamine is blended, the blending ratio of hydrodrope can be kept low compared to the case where glycol ether is used alone.

Furthermore, carboxylic acid ester surfactants and amide surfactants that are hydrolyzed with caustic alkali are not included in the surfactant, and the following can be used here.

Anionic surfactant; alkylbenzene sulfonate 3-7onate, naphthalene sulfonate, alkylnaphthalene sulfonate, betatetratinum sulfonate,
These include naphthalene formalin condensate sulfonate, higher alcohol sulfate, higher alcohol ethoxysulfonate, alkylphenyl ethoxylate sulfate, alkyl phosphate ester salt, soap, and the like.

Nonionic surfactant; higher alcohol ethoxylate,
These include alkylphenyl ethoxylates, higher alcohol ethylene oxide propylene oxide adducts, alkylphenyl ethylene oxide propylene oxide adducts/ethylene oxide propylene oxide block polymers, and amine oxides.

Cationic surfactants: alkyl quaternary ammonium compounds, alkylpyridinium compounds, alkylbenzylammonium compounds, alkylamine compounds, alkylpolyoxyethyleneamine compounds, amine oxide compounds, etc.

1/1I-Ampholytic surfactant; alkyl betaine compound, sulfur betaine compound, alkylimidazolinium compound, alkylaminopropionic acid compound, alkyliminodipropionic acid compound 41.

The blending ratio of surfactant should be between 0 and 10% by weight. When used as a detergent for spray-type automatic washing machines, surfactants create foam and are rather harmful, but they are used for ultrasonic washing machines. In some cases, or in the case of immersion cleaning, the combination of surfactants is effective.

In addition to the above ingredients, optional ingredients such as alkali metal silicates, alkali metal hydrochlorides, alkali metal sulfates, alkali metal carbonates, alkali metal phosphates, and other substances commonly included in detergents may be added. It can also be blended.

(Effects of the Invention) As described above, the cleaning agent according to the present invention is a mixture of a caustic alkali and a water-soluble alkanolamine or a mixed solvent of a water-soluble alkanolamine and a glycol ether.
It is a hard-73 integrated cleaning agent with 0.00% active ingredients and has extremely excellent cleaning power.

For example, you can use the aqueous solution of the cleaning agent of this invention to clean plastic containers that are so contaminated with oil, exhaust carbon, dust, etc. that they cannot be cleaned without rinsing with other cleaning agents. It can be easily washed off with the jet pressure of an automatic washing machine without washing.

Furthermore, to give an example of the excellent cleaning power of the cleaning agent of this invention, in food factories, pharmaceutical factories, etc., machines are disassembled and immersed in a solvent after a day's work, and then cleaned with lubricating oil and a brush. It was reassembled after scrubbing off grease, etc., which caused safety issues.

Such stains can be easily washed off by using the aqueous cleaning solution of the present invention in an automatic spray cleaning machine, and the cleaning time can be significantly shortened.

Further, when the water-soluble alkanolamine or the mixed solvent of the water-soluble alkanolamine and glycol ether of this invention is a glycol alone, it is disclosed in Japanese Patent Application Laid-Open No. 61-296098 (
5) Even if a large amount of caustic alkali is added, a solid detergent can be obtained.

For example, if you add 30 parts of butyltetraethylene glycol ether to 10 parts of caustic soda, you will no longer obtain a solid detergent, but a paste, but an iso-compound of butyltetraethylene glycol and triethanolamine. A solid detergent can still be obtained even if 30 parts are mixed, and a solid detergent can still be obtained even if 40 times as much triethanolamine is added.

In this way, even if a large amount of a mixed solvent with a water-soluble alkanolamine or glycol ether is blended, the solid state is maintained, so the present invention can provide various characteristics to the cleaning ability of the cleaning agent.

Another advantageous feature of the present invention is that it provides a surface-dry solid detergent in which caustic alkali and glycol ether are present together.

In other words, when a large amount of glycol/cool ether is added to caustic alkali, it becomes slurry or paste, but this state is unstable, and as the temperature rises, the caustic alkali and glycol ether Even if the upper layer, which is rich in glycol ether, and the lower layer, which is rich in caustic alkali, are collected, sufficient cleaning power cannot be obtained.

However, if the detergent of the present invention is in a solid state in which caustic alkali and glycol ether are integrated, this aqueous solution will have sufficient detergency.

In addition, as mentioned above, if a slurry or paste-like substance solidifies in a container due to a drop in temperature, it is difficult and dangerous to remove it from the container. As long as the solid shape is solid, granular, small block, or large block, the shape can be selected according to the purpose, so it does not pose any particular difficulty or danger in handling.

On the other hand, if the solid caustic alkali and glycol knee/g-chill are not integrated and the glycol ether is simply attached to the surface of the caustic alkali and it is in a wet state, if it is placed in a bag made of polyethylene, etc. , it sticks to the inside of the bag and is difficult to take out. Also, if you try to forcefully remove it by hitting it, it will scatter and cause a dangerous situation. On the other hand, since the cleaning agent of the present invention has a dry surface and is in a solid state, it can be easily taken out without adhering to the inside of the bag.

(Example) Examples of this invention will be shown below.

Examples 1 to 13 Pearl-like caustic soda manufactured by Tsurupei Co., Ltd. (particle size 0.4 ■) 10
To 0f, the following alkanolamine or a mixed solvent of alkanolamine and glycol ether was added, stirred and mixed, and left overnight to obtain a cleaning agent as shown in Table 1 below.

-/Tar Examples 1 to 8 are pearly caustic soda 100 manufactured by Tsurupei Co., Ltd.
This is an example in which 7 to 500 tons of alkanolamines were added to t to make a solid.

In addition, the control example is triisopropanolamine 600 f
was added, but this was a paste, whereas the one to which triisopropanolamine 500f of Example 8 was added was a solid.

Further, Examples 9 to 13 are examples in which 10 to 400 f of a mixed solvent of alkanolamine and glycol ether were added to 100 f of caustic soda in the form of a crowbar manufactured by Tsurupei Co., Ltd. to form a solid. Tool=3-
Mixed solvent 6 with 1=9 methyl-3-methoxybutanol
When 001 was added, it was a paste.

Examples 14 and 15 Cleaning agents were obtained by mixing and stirring the formulations shown in Table 2 below in the same manner as in the above examples.

1, 2/ - Table 2 Example 14 can be diluted with 3 times the amount of water and applied on a grilled meat iron plate at 60 to 100°C with severe burns. After 911 to 2 minutes, it can be rubbed with a brush and washed off with water. Ta.

When Example 15 was diluted 6 times with water and used to clean a cooking pot at a Chinese restaurant in the same manner as above, the stains were easily washed off with water by simply rubbing with Brush Coco.

Examples 16 to 20 Cleaning agents were obtained by mixing and stirring the formulations shown in Table 3 below in the same manner as in the above examples.

-13- In the table, *Alkyl phosphate ester, 01J) Mixture of 01J um oxide and higher alcohol ethylene oxide adduct Example 16 was diluted with 5 times water and A
The water was howling against the inside wall of the heavy oil tank. 1
After washing twice, the oil was removed from the wall surface.

When Example 19 was diluted 5 times with water and sprayed on the inner wall of the A heavy oil tank (2) using a foam sprayer to clean it, it was able to be washed off by repeated cleaning three times. It has become clear that a high proportion of toreyosidiisobrobanolamine is effective in cleaning A-heavy oil, which is difficult to clean.

Conventionally, disassembled machine parts were immersed in a solvent and scrubbed with a brush.At a pharmaceutical factory, the machines were disassembled after work, and aqueous solutions 1 to 3 of Example 17 were applied to them at high pressure at 60°C. When sprayed, the grease could be easily washed off.

Plastic containers with heavy oil stains and exhaust gas stains are conventionally treated with a 5% aqueous solution of caustic soda! - After soaking in 80 to 90°C, it was pulled out and rubbed with a nylon scrubber, but the stains could not be removed sufficiently. Also,
Even when the control example 3 was washed with an aqueous solution at 60° C. for 3 minutes using a high-pressure jet automatic washer, the stains did not come off.

On the other hand, when the 2% aqueous solution of Example 18 was washed at 60° C. using a high-pressure jetting automatic washing machine for 1 minute under the same high-pressure conditions, it was possible to wash it off.

When Example 19 was diluted with water and sprinkled on the floor of a machine tool factory, the dirt was easily washed off by scrubbing with a brush.

When Example 20 was diluted 10 times with water and sprayed onto polymerized and solidified oil stains in the kitchen, it was easily washed off.

Claims (4)

[Claims] (1) A solid detergent made by mixing a caustic alkali and a water-soluble alkanolamine. (2) The solid detergent according to claim 1, wherein up to 90% by weight of the caustic alkali is replaced with one or more of a sequestering agent, an antifoaming agent, a hydrodrop, and a surfactant. (3) A solid detergent made by mixing a caustic alkali, a water-soluble alkanolamine, and a water-soluble glycol ether. (4) The solid detergent according to claim 3, wherein up to 90% by weight of the caustic alkali is replaced with one or more of a sequestering agent, an antifoaming agent, a hydrodrop, and a surfactant.