JPS6215299A - Multicomponent detergent composition and its use - 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 the Invention The present invention relates to multicomponent cleaning compositions and methods of using them to clean and brighten surfaces.

This method involves spraying a well-mixed multi-component composition onto soiled and discolored surfaces (particularly interior walls and ceilings) to remove stains.

The invention can be used, for example, to clean and polish the surfaces of spray-finished or textile-finished acoustic materials or acoustic tiles. To use the invention, a well-mixed composition containing hydrogen peroxide is sprayed onto the target surface. Hydrogen peroxide decomposes to produce water and oxygen. Over time, the composition dries and breaks down into small solid residues that are substantially harmless. The target surface may be metallic and does not necessarily have to be resistant to bases. In that case, wipe off the sprayed cleaning composition before any metal is eroded.

[Conventional technology]

In particular, various wall and ceiling coverings used for interior decoration are susceptible to discolored stains. Stains and dirt occur for various reasons. For example, cigarette smoke, oil splashes from cooking,
These include contact with hair and skin, as well as various other dirt, oils, and resins.

It has long been known that stains can be cleaned with oxidizing agents such as hydrogen peroxide or with bleach. Therefore, even if the stain is not actually removed, the color can be removed.

U.S. Patent No. 3.034,8 issued May 15, 1962
As pointed out by Dustman in No. 51, stain bleaching compositions used on floor, wall and ceiling surfaces should have low residual solids. That is, after the composition has achieved its bleaching purpose, it is desirable that minimal residue remain on the surface.

In theory, chemicals that bleach and oxidize stains could be used to treat interior surfaces.

However, the table shows that many of the most effective oxidizing agents are chlorine agents that emit a foul odor for many days. Although hydrogen peroxide-based cleaners do not emit such strong odors, they were considered less effective than chlorine agents at bleaching stubborn stains.

U.S. Patent No. Issued 1.750.657 March 18, 1930 3.
034.851 May 15, 1962 3.19
4.768 July 13, 1965 3.378.
444 April 16, 1968 3.607.76
0 September 21, 1971 3.823.231
July 9, 1974 3.925.234
December 9, 1975 4.13α501
December 19, 1978 4.145.183 1
References for general issues include the following: March 20, 1979.

U Gong Rainbow ・Sunday 3.373.114 March 12, 1968 4.
116.851 September 26, 1978 [Summary of the Invention] The present invention provides a highly effective, multi-component (e.g., three-component), low-residue, stain-removing hydrogen oxide solution, the other component being a solid filtrate. Microparticles of sulfate, the last component being an oxyethylene chain of 3-40 repeating units with a hydroxyl group at one end and a hydrophobic chain with at least 6 carbon atoms at the other end. It is a toxic nonionic surfactant that is an organic radical. This nonionic surfactant preferably has moderate basicity and improves cleaning effect.
Contains one or more basic compounds or basic compounds. Using this invention, you can clean and polish acoustic materials and other interior surfaces with almost no effort required. Extremely effective for cleaning woven acoustic materials and acoustic tiles.

The cleanliness of acoustic materials that become dirty from absorbing oil, smoke and dust every day,
Recovering brightness is a difficult problem.

Mere bleaching is insufficient to clean absorbent surfaces such as spray-finished or woven acoustic materials and acoustic tiles. It is also desirable that the compositions and methods used minimize gradients, be safe and simple, and leave as little residue as possible during and after use. The present invention allows for the cleaning of spray-finished or textile-finished acoustic materials or tiles with minimal inclination and, if done properly, safely and relatively easily. There is also no need to rinse off the cleaning agent after use, usually leaving behind a slightly shiny, dry residue that is easily removed.

To use the present invention, first a nonionic interface is prepared. Mix the activator with the solid persulfate and concentrated hydrogen peroxide. This mixture is then sprayed onto the soiled surface at room temperature and adheres to the target surface to form a wet layer. The surface is washed with hydrogen peroxide in the wet layer, and the water is removed and decomposed into oxygen.

The surfactant is preferably an ethoxylate having 3 to 15 oxyethylene repeating units and an HLB value of 7 to 18. The surfactant is preferably diluted with 5 to 150 times the volume of water. Additionally, the surfactant may be soluble in a solvent such as a mono-lower alkyl ether of ethylene glycol, such as butyl cellosolve.

The amount of each component in a three-component or more multi-component cleaning agent must be determined by taking into consideration the ratio of hydrogen peroxide to each component. This is because, depending on the degree of dilution, hydrogen peroxide can be made so that it does not necessarily affect the action of the mixture.

Generally, the concentration of hydrogen peroxide is preferably slightly high, for example, 25% by weight or the upper limit of a stable and commercially available concentration. However, highly concentrated hydrogen peroxide is difficult to transport and handle. Therefore we use 30 to 40%.

Using the amount of hydrogen peroxide (not considering dilution with water) as the basis for determining the component ratios of the composition, the amount of persulfate (e.g. sodium, ammonium, potassium persulfates) is usually 0.05 to 1.0% per part by weight.
0 parts by weight, and the nonionic surfactant contains the same amount of hydrogen peroxide.Although the present invention is less effective than chlorine agents for certain types of stubborn stains, it does not remove chlorine from the surface like a swimming pool. No, and the decomposition products of hydrogen peroxide (typically water vapor and oxygen) are harmless.

Each component of the multi-component stain removal cleaning agent of the present invention is stored separately to prevent undecomposed hydrogen peroxide from forming. Once the three or more components have been mixed, it is desirable to decompose the hydrogen peroxide in a controlled manner to achieve maximum cleaning effectiveness within the required time period.

- of the mixture according to the invention should be from 7 to 11, preferably from 7.5 to 9. This level of basicity may erode the metal surface.

If you want to avoid this, you can wipe the mixture off the metal parts immediately after spraying to prevent corrosion.

For example, aluminum surfaces can be cleaned in this way. The present invention is primarily intended for cleaning surfaces such as acoustic tiles, which are often framed with aluminum pieces or aluminum auxiliary tools.

The multi-component composition may also contain a foaming agent, preferably in small amounts.

To achieve the low residue feature of the present invention, most components of the composition must be volatile and decomposable at room temperature (eg, 20-25° C. at normal atmospheric pressure). However, it is also possible to include additives of up to 3%, based on the total weight of the three components, which do not have to be those mentioned above. The additive may also be stable at room temperature and non-volatile. Typical examples of these additives are fillers, extenders, odorants, antifoam agents, sequestrants,
voice modifiers, monoalkyl ether solvents of ethylene glycol, or other relatively inert catalysts, and surfactants, detergents, bleaches, and the like.

It is desirable to use sequestering agents to inactivate impurities that may interfere with the effectiveness of the present invention. Examples of suitable materials include ethylenediamine/
Tetraacetic acid tetrasodium salt, N-hydroxyethylethylenediaminetriacetic acid trisodium salt and N,N-di(B-
hydroxyethyl) glycine sodium salt.

The components of the composition of the present invention should be as few as possible in order to obtain the desired cleaning effect. For example, careful selection of nonionic surfactants can eliminate the need for antifoam agents. Furthermore, it is necessary to ensure that the surfactant does not reduce the intended effect of the present invention. Miscibility with H20□ is not a necessary property for nonionic surfactants.
However, if the decomposition of hydrogen peroxide is facilitated by the presence of surfactants, the bleaching and cleaning effects are enhanced.

Mixing the multicomponent compositions described thus far results in a low viscosity composition suitable for spraying. The multicomponent mixture composition obtained in this way is stable for only a limited time;
For maximum cleaning effect, the mixture should be used immediately.

By applying the present invention, foam can be well controlled and the surface becomes substantially foam-free. Even if a foam does form, it is unstable and disappears within seconds to minutes.

[Detailed explanation]

As a typical example of the present invention, a three-component composition will be described in more detail. For convenience, each component of a multi-component composition will be referred to as ``Component A'' or ``First Component'', Component B or ``Second Component''. These names are arbitrary.

Mix each component in the appropriate order. However, the hydrogen peroxide or persulfate components are usually added last.

For convenience, the "A acid component or 6 first component" of the pot is a nonionic surfactant. Some surfactants are known to be immiscible due to some interaction with bleach.

As long as the composition is stored separately and the decomposition of each component after mixing is controlled within the desired range, it does not matter much whether the surfactant used in the present invention destabilizes hydrogen peroxide. In fact, it is not necessary for the mixture to be stable for long periods of time insofar as it is suitable for spraying the composition onto the surface on which the multicomponent system is mixed in order to obtain a sufficiently active composition.

(Typically the desired effect is to remove dark stains from light-colored surfaces such as acoustic tiles.) Nonionic surfactants have poor foam-forming power, poor cleaning power, and hydrogen peroxide. selected from those that control the decomposition of The basic compound added to component A, described below, also helps control the rate of decomposition of hydrogen peroxide. One of the functions of the B component tfc as a second component is to control and activate the decomposition of hydrogen peroxide. The amounts of Component A and Component B preferably meet the overall objective of controlling the rate of decomposition of hydrogen peroxide. Since hydrogen peroxide is generally stable under acidic conditions, hydrogen peroxide is normally activated to a value of 7.0 or higher, and in the present invention, the maximum value is 7.0.
This is achieved by raising the value to 5-9.0. This goal can be achieved by adding a base. Without the buffer, the multi-component composition of the present invention would have a reduced μ value after mixing each component. In such cases, the value of the A component is set at a level high enough to maintain the initial value of the mixture of 7 or more, preferably 11 or less. In order to better activate the hydrogen peroxide in the overall mixture and to better control its decomposition rate, it is advisable to include one or more water-soluble basic compounds in the first component. . If the rate of hydrogen peroxide decomposition is too fast, undesirable pressures will build up in the container containing the mixture.

Any basic compound may be used as long as it does not affect the effects of the present invention. Preferably, the base is one that is easily soluble in water when mixed with the mixture. For example,
Sodium hydroxide, potassium hydroxide, monoethanolamine and their analogs.

The number of base-containing compounds is preferably 12 or less so as not to corrode containers for separate storage. The inventors have found that the desired level of basicity is from 0.75 to 1 equivalent of base to 11 equivalents of the concentrated nonionic or component.

Preferred nonionic surfactants are ethoxylates (ethylene oxide condensates having an oxyethylene chain) having the structural formula R-0-(cH2-CH2-0)n-H. where R is a hydrophobic organic radical having at least 6 carbon atoms (eg higher aliphatic or alkyl-substituted aromatic) and n is from 3 to 40, typically from 3 to 15.

The properties of the surfactant are determined by the length of the oxyethylene chain (ie the value of n) and the nature of the hydrophobic radical R. It is generally advisable to select surface tension reducing agents with cleaning and emulsifying properties that are less foam-forming, preferably anti-foaming. When the hydrophobic organic radical is a primary or secondary higher aliphatic alcohol, the value of n, whether calculated or measured, is preferably an HLB value (hydrophilic-lipophilic ratio) that is not strongly hydrophilic. A low value to give −
In the specification, the term 'higher alkyl' means an alkyl group having 6 or more carbon atoms, for example 7 to 24 carbon atoms. Although surfactants having both values as low as 7 or as high as 18 can be used, undesirable amounts of foam may be produced if the upper end of this range (eg 14 to 18) is used.

When the hydrophobic organic radical is the residue of a higher alkylphenol such as nonylphenol, the value of n is around 9. In any case, nonylphenyl ethoxylates have anti-foaming properties or have low foam-forming power. And H.L.
Those with a B value of 13 or less are commercially available. A commercially available ethoxylate having the structure of a primary or secondary higher aliphatic alcohol is TERGITOL 1
5-8 and 25-L series (trademarks of Union Carbide Corporation).

It can also be dissolved in a suitable solvent such as a mono-lower alkyl ether of ethylene glycol (e.g. ingropanol) or a commercially available butyl cellosolve. good. The solvent contains 25 or more A components and is preferably water.

The first component may also contain one or more water-soluble basic compounds. The basic compound supplements the cleaning action of the mixture. Suitable basic compounds are potassium silicide, sodium silicide and other alkali metal silicides.

The basicity imparted by the basic compound is taken into account in the overall composition as described above.

The B component or second component of the system is preferably stored as a collection of solid particulates. The persulfate selected in this particulate specification is ammonium persulfate (NH4)2S208.

Persulfates have a clear effect on accelerating the decomposition of hydrogen peroxide to a certain extent. It also works uniquely in surface cleaning. In the present invention, the effect when using either hydrogen peroxide or persulfate alone is not as good as the effect when both are used together. Because a chemical reaction may occur between the two, the normal procedure of the present invention is to mix them together in the final step of mixing the multicomponent composition.

Without severely limiting the residence time of the multicomponent mixture according to the invention in the container, and with continuous cleaning and cleaning of the sprayed surfaces.
In order to obtain the desired activation rate of hydrogen peroxide without reducing the bleaching/decolorizing effect, the amount of persulfate, which is component B, should be smaller than the amount of hydrogen peroxide, which is component C, in terms of mole number or stoichiometry. It is desirable to do so. If the amount of persulfate is too high, the residence time of the mixed multi-component composition in the container will be shortened and the oxygen generated from the hydrogen peroxide may be rapidly released onto the surface being cleaned using the present invention. There is. If hydrogen peroxide and persulfate are present in equimolar numbers in a mixed multicomponent composition, the rate of hydrogen peroxide decomposition will be at or near maximum. The basicity of component A also affects the container configuration of the mixed composition. And this is probably a more important factor than persulfate.

The third component or component C is a highly concentrated hydrogen peroxide solution. It is desirable to dilute the highly concentrated hydrogen peroxide solution somewhat.

However, in order to dilute with water, it is better to first dilute component A with water and combine it with this. Component A does not react with impurities in water. Impurities in tap water or ready-made impure water can cause uncontrolled decomposition of hydrogen peroxide.

The temperature of hydrogen peroxide solution ranges from 3q6 to extremely high concentration (by weight).
80% or 90%) can be used. As the inventor, the concentration is such that there is no great danger in handling it when carried.
For example, I recommend something with 30 to 40 pieces.

If component C (hydrogen peroxide component) of the present invention is to be diluted with water for an extended period of time prior to mixing with multiple components, distilled deionized water may be added with a stabilizer such as 7-enactin or similar. should be used. The volume of diluted hydrogen peroxide must be carefully monitored to ensure that the stability of the hydrogen peroxide is not compromised.

As mentioned before, purified water is required to dilute component C, but
There is no need for water to be added to component A (surfactant component). In the latter case, the use of substantially neutral deionized water is desirable from the standpoint of optimal quality control, but the purity of the water is less important. Whenever it is necessary to adjust - in the present invention, conventional acids and bases including acidic salts, basic salts, inorganic acids, and alkali metal hydroxides can be used.

[Other ingredients]

Other ingredients included in - or more components of the composition include fillers, extenders, sequestrants, odorants, solvents such as mono-lower alkyl ethers of ethylene glycol, antifoam agents, and These are analogs. If antifoam agents are used, particularly preferred are typically siloxane primers. Such anti-foaming agents include Dow's trademark "Anti-foam" (ANTr-r).
oAM)".

[Example 1] Ammonium persulfate is separated separately as dry crystals. When mixing the composition of this example, 21.86 g of monoethanolamine, 3.75 g of solid potassium hydroxide,
1/, potassium silicide (Kasil≠6 from Philadelphia Quartz Co.) 2211, surfactant (Tergitol 15-8-9 from Union Carbide Co.) 2B 9, ethoxylate alcohol (surfactant, Cyponi from Cypon Chemical Co.) , Ri L-4) 25.5.9 and N-hydroxylethylethylenediamine triacetic acid trisodium salt (
Sequestering agent, Bump O from Hampshire Chemical Co.
L Crystals) was added to 67251 tap water. The mixture was stirred until homogeneous. To this mixture were added 985 d of 35-hydrogen peroxide and 308 d of ammonium persulfate.

As a result, acoustic tiles for semi-finished walls and ceilings, organic? A low viscosity, easily sprayable composition was obtained which is particularly suitable for cleaning reamers or other absorbent surfaces consisting of fibrous materials. The composition of this example was especially effective in saving labor when spraying on ceiling tiles. This is because, apart from materials that are not resistant to bases and which are also used for ceilings (for example aluminum), no further handling is required after spraying, and the entire ceiling can be cleaned in a relatively short time. If the exposed aluminum support is on an acoustic (sound absorbing) or other dirty surface, the aluminum will not be adversely affected if the cleaning agent is wiped off after spraying.

Example 2 To 12 oz. of tap water was added 1.41 ethoxylate lauryl alcohol (surfactant, such as Atlas Chemical Co. trademark Bridge 30), Tergitol 15-8-9, 06911 Sodium Silicide Q, 7 g and 0.8 g of trimethylhexamethylene diamine were added. The mixture was spread until homogeneous. Add 17.8/l of ammonium persulfate and 35% hydrogen peroxide solution to this solution.
Added 13ml. Add 0.471 g of tap water to this solution.
(1) and India) were added and mixed until uniform.

The mixture of Example 2 also had the same effects as those of Example 1 above.

Claims (10)

[Claims] (1) (a) A nonionic surfactant whose first component is an ethoxylate having 3 to 40 oxyethylene repeating units and having an HLB value of 7 to 18 diluted with 7 to 150 times the volume of water. , (b) the second component is solid crystals of ammonium persulfate or alkali metal persulfate;
c) The third component is a hydrogen peroxide solution having a weight concentration of at least 25%, and the basic compound is added in an amount such that the pH of the first, second and third components is between 7 and 11 when mixed. The weight ratio of the hydrogen peroxide before dilution to the persulfate is 1:0.05 to 1:1, and the weight ratio of hydrogen peroxide before dilution to the surfactant is 1:0. 006 to 1:0.7. (2) The multi-component cleaning composition according to claim 1, wherein the first component comprises a basic compound. (3) The multi-component cleaning composition according to claim 1, wherein the first component comprises a silicon compound. (4) (a) (a) The first component consists of 3 to 40 oxyethylene repeating units and has an HLB value of 7 to 18.
A nonionic surfactant having an ethoxylate at one end and a hydrophobic organic radical having at least 6 carbon atoms at the other end; (c) a composition in which the third component is aqueous hydrogen peroxide having a concentration of at least 25% by weight is mixed with a finely powdered solid of sulfate; (b) this mixture is sprayed under room temperature conditions onto the target surface. (c) cleaning the target surface with this mixture and completely decomposing the hydrogen peroxide into water and oxygen; When the components are mixed, p
The basic compound is contained in an amount such that H is 7 to 11, and the weight ratio of the hydrogen peroxide to the persulfate before dilution is 1:
0.05 to 1:1, and the weight ratio of hydrogen peroxide to the surfactant before dilution is 1:0.006 to 1:0.
7. Cleaning method. (5) Claim 4, wherein the surfactant is an ethoxylate consisting of nine oxyethylene repeating units.
The method described in section. (6) The method according to claim 4, wherein the first component contains a basic compound. (7) The method according to claim 4, wherein the first component contains a silicon compound. (8) The method according to claim 4, wherein the three-component mixture is basic with a pH of 7 to 11. (9) The method according to claim 4, in which no brittle bubbles are produced on the target surface when the mixture is sprayed. (10) The target surface is generally resistant to bases, and the wet layer dries at room temperature, leaving a residue consisting of a decomposition product of the nonionic surfactant and the persulfate. The method described in scope item 4.