DE3616522A1 - DETERGENS - Google Patents

Description

NAKANISHI KAKEN KABUSHIKI KAISHA Tokyo / Japan

Detergent

description

The invention relates to a detergent which is very easily soluble in water and has a high detergency owns.

Conventional powder or granular detergents generally consist, for example, of about 20 to 25 parts (in the present description means "Parts" "parts by weight") of a surfactant such as alkylbenzenesulfonate and about 65 to 70 parts of one inorganic builders, selected from salt cakes or technical sodium sulfate, sodium tripolyphosphate, sodium carbonate, Sodium metasilicate and the like, and a little water. These detergents are without additional work measures, like stirring, not easily dissolvable even if a small amount of the detergent is added to a a large amount of water is added. For example, aqueous solutions of some detergents are used for cleaning When the wiper windshield of a car is used, it forms an opaque or translucent cloud on the surface of the front window.

Powdered or granular detergent becomes lighter packaged, has a low weight and can be compared to detergents in liquid or creamy Can be easily stored and transported. Although solid detergents have excellent characteristics

own, it is further desirable to provide such detergents that are quick and easy and Translucent dissolved in water at room temperature and immediately according to the location and intended use can be dissolved without further work measures, such as stirring.

The present invention represents the climax more extensive Investigations on solid detergents in powder form or granular state for developing a detergent that is redissolvable and the detergency is excellent, but no residue such as a cloud and the like on the cleaned one Leaves surface.

The present invention relates to a detergent containing at least one inorganic builder selected from Phosphates, carbonates and sulfates; at least one organic builder selected from alkali metal salts of alkylarylsulfonic acids, sulfated alkyl ethers, ethylenediamine - tetraacetic acid and low, saturated Fatty acids; and contains a solvent in the form of a monohydric or dihydric alcohol. It behaves excellent in terms of redissolubility and dispersibility in connection with a strong Detergent effect and good peelability, leaving no residue or cleaning traces.

The preferred inorganic builder salts are those with excellent redissolubility, such as phosphates the alkali metals, such as potassium monophosphate, potassium biphosphate, potassium triphosphate, potassium pyrophosphate, sodium monophosphate, Sodium biphosphate, sodium triphosphate and sodium pyrophosphate; Alkali metal carbonates,

such as potassium carbonate and sodium carbonate, magnesium sulfate and other high solubility sulfates, used singly or in admixture of two or more kinds can be.

Preferred organic builder salts have excellent detergency, permeability and dispersibility and are, for example, alkali metal salts of alkylarylsulfonic acids, such as sodium alkylbenzenesulfonate, sodium alkylnaphthalenesulfonate, sodium p-toluenesulfonate, alkali metal salts of sulfated ethylenediamine ethers, such as ethyl acetate, such as ethyl acetate, such as alkyl ethersulfate-ethylenediamine ethers, such as ethyl acetate. Tetrasodium ethylenediamine tetraacetate and alkali metal salts of C ₂ _g saturated fatty acids such as sodium propionate, sodium butylate, sodium caproate, sodium caprylate and sodium caprate, which can be used individually or in a mixture of two or more kinds.

Examples of the solvent, which preferably has excellent degreasing properties, are divalent Alcohols, such as hexylene glycol, methyl cellosolve, ethyl cellosolve, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, and monohydric alcohols such as isopropyl alcohol, isobutyl alcohol and the like. These In the detergent, solvents have the effect of staining an oil film that adheres together with dust, to solve and remove. When a granular detergent is obtained, they have an accelerating effect the granulation of the mixed, powdery material.

The mixing ratios for the inorganic builder salt, the organic builder salt and the solvent can be

be selected appropriately. Preferred proportions are about 10 to 30 parts by weight for the inorganic builder, about 1 to 15 parts by weight for the organic builder, and about 3 parts by weight for the solvent.

The mixed material may, in addition to the above-mentioned organic and inorganic builders, with a predetermined amount of another organic or inorganic builder or a suitable surface active agent Agents and the like, whereby the detergency can be increased considerably can.

For making a granular detergent using of the mixed material are first the respective predetermined amounts of the inorganic builder and the organic builder mixed to form a uniform powder; second is while the powder is stirred and mixed, the solvent is gradually added to granulate the powder so that whose flowability or fluidity is not lost, thereby providing a granular material with good flowability is formed. The United States Standard screen size of the granular detergent formed is preferably that which will pass through a screen having a mesh size of about 0.84 mm (20 mesh) and retained by 0.149 mm (100 mesh). Because the one to be mixed Builder sometimes has high hygroscopicity, so is the granule manufacturing process of the mixing conditions of the raw materials, it is preferred that they be experimentally determined in advance.

The resulting granular detergent is relatively high Hygroscopicity such that a batch with an amount to be dissolved of, for example, 5 g, 10 g, 20 g, ...., 100 g each in a container, such as a bag made of packaging materials, covered with an aluminum foil is laminated and has good barrier properties, is sealed for sale in the market. As an an example a laminated material made of an aluminum foil with a polyethylene film liner is specified, which is used to form an almost cylindrical pouch, its folded or collapsed diameter about 2.5 cm and the length of which is about 17 to 18 cm, filled with 20 g of granular detergent v / ground and the open end of which is welded. The packaged detergent corresponds to one batch of one to be dissolved Amount of a liquid storage tank of 2 1 for cleaning the windshield of a motor vehicle. Since the detergent is compact, it can be used in carried in the driver's pocket and. is very suitable for use. Hence, if the liquid is used up and the storage tank is empty, the tank is filled with about 2 liters of water, in which the packaged Detergent is added by opening the package, after which the required, transparent liquid is immediately added without the need for agitation.

The following examples illustrate the invention; all parts are on unless otherwise stated based on weight.

example 1

First, 10 parts each of potassium biphosphate, magnesium sulfate, Potassium carbonate and 1 part sodium alkyl

ether sulfate placed in a ribbon blender for blending to make a uniform powder. Second, while continuing to stir and mix the powder, gradually add 3 parts of ethyl cellosolve added dropwise to granulate the powder without loss of flowability. The granular detergent obtained possesses good flowability in connection with a particle size (U.S.S. screen size) which is determined by a Sieve with a mesh size of about 0.84 mm (20 mesh) passed and of a mesh size of about 0.149 ram (100 mesh) is retained, almost excluding powder of finer particles.

Example 2

Following the same procedure as in Example 1 was under Mix the following builder salts and solvent with a granular detergent get the same flowability.

Builder salts

Potassium Biphosphate 15 Magnesium Sulphate 5

Potassium carbonate 5

Tetrasodium ethylenediamine tetraacetate 2 Sodium alkyl ether sulfate 1

solvent

Butyl cellosolve 3.

Example 3

Following the same procedure as in Example 1, mixing the following builder salts and the following Solvent obtained a detergent with almost the same properties as in Example 1.

Parts

Builder salts

Potassium carbonate 10

Tetrasodium ethylenediamine tetraacetate 2

Sodium alkylbenzenesulfonate 10

solvent

Isopropyl alcohol 3.

Example 4

Following the same procedure as in Example 1, mixing the following builder salts and the following Solvent obtained a detergent having the same properties as in Example 1.

Parts builder salts

Potassium carbonate 15

Tetranatriuni-ethylenediamine-tetraacetate 2 Sodium alkylbenzenesulfate 10

solvent

Ethyl c e Ho s ο lve 3.

Example 5

Parts

Builder salts

Potassium carbonate 3

Magnesium sulfate 1

Sodium p-toluenesulfonate 3

Sodium propionate 2

solvent

Diethylene glycol monomethyl ether 1

Following the same procedure as in Example 1 except for mixing the above Builder salts and the above solvent, the same result as in Example 4 was obtained.

Example 6

Parts

Potassium carbonate 5

Sodium p-toluenesulfonate 2

Sodium propionate 2

After performing the same steps and using the same solvent as in Example 5 except for mixing the aforementioned builder salts a good granular detergent was obtained.

1 parts

Potassium carbonate 7

Sodium p-toluenesulfonate 1

Sodium propionate 1

Using the same solvent and procedure as in Example 5 except for mixing A granular detergent with similar properties was obtained from the above builder salts.

^{B e} * ^s P ^{ie 1} § parts

Magnesium sulfate 1

Potassium carbonate 3

Disodium ethylenediamine tetraacetate 3 Sodium p-toluene sulfate 2

Using the same solvent and procedure as in Example 5 except for mixing A granular detergent with similar properties was obtained from the above builder salts.

^Bei P ^iel 2 parts

Potassium carbonate 5

Tetrasodium ethylenediamine tetraacetate 2 Sodium p-toluene sulfate 2

Using the same solvent and procedure as in Example 5 except for mixing the above builder salts, almost the same granular detergent was obtained.

^Bei P ^iel 12 parts

Potassium carbonate 7

Disodium ethylenediamine tetraacetate 1 ll sodium p-toluenesulfonate 1

Using the same solvent and procedure as in Example 5 except for mixing a granular detergent with very similar properties was obtained from the above builder salts.

^Bei P ^iel 11 parts

Potassium pyrophosphate 2

Potassium carbonate 5

Disodium ethylenediamine tetraacetate 1 Sodium propionate 1

Using the same solvent and procedure as in Example 5 except for mixing of the above builder salts a detergent with very similar properties was obtained.

^{B e} i ^s V * ^e 1 12 parts

Builder salts

Potassium bisphosphate 2

Potassium carbonate 3

Tetrasodium ethylenediamine tetraacetate 1

Sodium p-toluenesulfonate 2 solvent

Ethylene glycol monoethyl ether 1

Following the same procedure as in Example 5 except for mixing the above builder salts and of the above solvent, a detergent with very similar properties was obtained.

12 parts

Potassium triphosphate 2

Potassium carbonate 3

Sodium p-toluenesulfonate 3

Using the same solvent and procedure as in Example 12 except for mixing of the above builder salts a detergent with very similar properties was obtained.

To the detergent according to the invention shown in the examples with a conventional powder or granular detergent for household use too compare, tests were made for their rate of dissolution in water at room temperature and their Detergent effect when an aqueous detergent solution is applied carried out on the windshield of motor vehicles. The following results were obtained.

Method of the dissolution test

(a) Cups with a capacity of 300 ecm, each 200 ecm of water at room temperature were prepared, with the water in stationary Condition was kept in which 2 g of each detergent for examination at a given time of was added to the top of the beaker, whereupon the state of dissolution of each detergent was observed,

(b) Zg of each detergent for study was placed on the bottom of beakers having a capacity of 300 cc, into which 200 cc of water at room temperature was poured using another beaker, after which the solution state of the was put on the bottom of the beaker Detergent observed.

As a result, in the case of method (a), none of the detergents of the present invention rose to the surface of the Water to form globules, and all of them permeated well into the water and dissolved to to give a translucent liquid in which no bubbles were formed after about 3 to 5 minutes.

On the other hand, when the conventional detergent was added to water, a part of the detergent increased to that Surface of the water to form globules and part of it was retained on the bottom of the cup, and the detergent did not completely dissolve after more than 30 minutes.

In the case of method (b), all of the detergents according to the invention dissolved almost immediately to form a translucent liquid that did not form bubbles.

On the other hand, when the conventional detergent was added to water, a part rose to the surface of the Water to form globules and another part was retained at the bottom of the beaker and that Detergent was not completely dissolved after more than 30 minutes as in the case of method (a). Furthermore formed get some bubbles.

Windshield washing test method

Each 20 g of detergent was placed in a liquid storage tank for car windshields, the 2000 ecm of water at room temperature, introduced to a 1 & Lge to form an aqueous solution of each detergent. About 200 ecm of this 1% aqueous solution were on the a dirty surface of a windshield was poured through a nozzle and washed with the help of a windshield wiper. After that, the cleaning state became the front one Examined glass surface.

As a result, all of the detergents of the present invention were completely dissolved and formed a translucent one Liquid and the layer of dirt adhering to the surface of the windshield were easily removed. It no water remained and no residue adhered to the glass surface. Even after repeating the process there was no lump formation in the pump or nozzle as a result of residues.

On the other hand, in the case of using the conventional detergent, it was immediately after it was added to the water has not been fully resolved. As the liquid poured onto the surface of the windshield and the windshield wiper was in operation a few hours longer than in the case of the detergent according to the invention, the dirt layer adhering to the surface of the windshield was not completely removed, and also the water on it was not completely withdrawn, with a cloud on the surface of the glass remained. If the washing was repeated, there was a risk that the pump or nozzle could become clogged with the residue became.

The detergent of the present invention is ready for use Inner and outer walls, ceilings, furniture or household items and other vessels or vehicles in addition to window glass, car windshields and glassware.

Claims (11)

Dr. F. Zumsteiri-sön.T.Dr. E. Assrn & nn Dipl.-Ing. F. Klingseisen - Dr. F. Zumstein jun. "^ β PAT E N TA N VELOTE APPROVED REPRESENTATIVES TO THE EUROPEAN PATENT OFFICE REPRESENTATIVES BEFORE THE EUROPEAN PATENT OFFICE Case 23379 NAKANISHI KAKEN KABUSHIKI KAISHA Tokyo / Japan Detergent claims 1. Detergent comprising at least one inorganic builder selected from phosphates and carbonates and sulfates; at least one organic builder selected from alkali metal salts of alkylarylsulfonic acids, sulfated alkyl ethers, ethylenediamine tetraacetic acid and low, saturated fat; and a solvent in the form of monovalent or divalent Alcohol. 2. The detergent of claim 1 wherein the weight ratio of the inorganic builder to the organic builder to the solvent is about 3-30 / 1-15 / 3
amounts to. 3 · Detergent according to claim 1, wherein the inorganic Builder is potassium carbonate. 4. Detergent according to claim 1, wherein the inorganic Salt is potassium phosphate. 5. The detergent of claim 1 wherein the inorganic builder is magnesium sulfate. 6. Detergent according to any one of claims 1 to 5 »wherein the organic builder is sodium alkylarylsulfonate is. 7. Detergent according to any one of claims 1 to 5, wherein the organic builder is sodium ethylenediaminetetraacetate is. 8. A detergent according to any one of claims 1 to 5, wherein the organic builder is sodium p-toluenesulfonate is. 9. A detergent according to any one of claims 1 to 5, wherein the organic builder is sodium propionate. 10. A detergent according to any one of claims 1 to 9, wherein the solvent is a dihydric alcohol. 11. A detergent according to any one of claims 1 to 9, wherein the solvent is a monohydric alcohol.