JPS621790A - Fungicidal composition - 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 novel mold removal agent, and more particularly to a mold removal agent characterized by containing silicone oil or/and an emulsion thereof and peroxide. Regarding the composition.

[Conventional technology and problems]

Black stains on bathroom ceilings, tile joints, plastic walls, and triangular corners in the kitchen cannot be removed with cleansers or activators alone, so currently we are using a spray mold remover that uses hypochlorite. is covered.

Furthermore, most of the mold removers published in the patents so far use chlorine bleaches such as hypochlorite. The reason for this is that peroxides such as hydrogen peroxide, organic peracids, and inorganic peracids have weak bleaching power and cannot completely remove mold pigments. On the other hand, mold removers using hypochlorite have excellent performance, but are highly dangerous to the eyes and skin, and spray-type ones are especially unsuitable for removing mold from ceilings and the like. Furthermore, it has a strong chlorine odor, making it difficult to use it in small bathrooms.

[Means for solving problems]

The present inventors have previously discovered that peroxide is effective as a mold removal agent, but as a result of intensive research to further enhance the effect, they have found that peroxide and silicone oil or/and an emulsion thereof. The present invention has been completed by discovering that the combination of the above improves performance compared to using peroxide alone.

That is, the present invention provides a mold-killing composition characterized by containing peroxide and silicone oil or/and an emulsion thereof.

Peroxides used in the present invention include hydrogen peroxide, or inorganic and organic peroxides that produce hydrogen peroxide in aqueous solution, or combinations thereof with activators, peroxymonosulfate, peroxydisulfate, etc. Salts, organic peroxides and their salts, etc. can be used.

The amount of peroxide in the composition is preferably 0.5 to 95% (% is weight %, the same applies hereinafter), more preferably 5 to 90%.
%, particularly preferably 30 to 90%. More specific examples of peroxides are given below.

Peroxides that generate hydrogen peroxide in aqueous solutions include organic and inorganic hydrogen peroxide adducts such as sodium carbonate/hydrogen peroxide adduct, sodium tripolyphosphate/hydrogen peroxide adduct, and sodium pyrophosphate/hydrogen peroxide. Adduct, urea/hydrogen peroxide adduct, or 4NazSOa ・2H2
02.NaCl, etc. are exemplified. Further, there are inorganic peroxides such as sodium perborate hydrate, sodium perborate tetrahydrate, sodium peroxide, and calcium peroxide. Among these, particularly preferred are sodium carbonate/hydrogen peroxide adduct, sodium perborate hydrate, and sodium perborate tetrahydrate.

Further, as the activator used in combination with these, a compound that reacts with hydrogen peroxide or peroxide in an aqueous solution to produce an organic peracid or a bleaching active species can be used. The activator used in the present invention includes nitriles such as acetonitrile, malononitrile, phthalonitrile, benzoyliminodiacetonitrile, glucose pentaacetate, octaacetylsu/yo-su, triacetin, pentaerythritol tetraacetate,
Sorbitol hexaacetate, acetoxybenzenesulfonate, or O-acetylated products such as triacetyl cyanuric acid, methyl chloroformate, N, N, N', N''
-tetraacetylethylenediamine, or tetraacetylglycoluril, N-penzoylimidazur,
N-acylated products such as di-N-acetyldimethylglyoxime, 1-phenyl-3-acetylhydantoin, N,N-diacetylaniline, N-acetyldiglykolimide, diacetylmethylene diformamide, and phthalic anhydride, anhydrous Acid anhydrides such as succinic acid, benzoic anhydride, glutaric anhydride, alkyl sulfate anhydrides, anhydrides of carboxylic acids and organic sulfonic acids, sulfonyloximes such as di(methanesulfonyl)dimethylglyoxime, di-
Examples include acylated phosphates such as ethylbenzoyl phosphate, phenylsulfonate esters, organic phosphoric azides such as diphenylphosphinic azide, disulfones such as diphenyldisulfone, and other N-sulfonylimidazoles, cyanamides, and halogenated triazines. Ru. These activators can be used alone or in combination of two or more.

The amount of this type of peroxide in the composition is preferably 0.
．． It is 5 to 95%, more preferably 5 to 90%, particularly preferably 30 to 90%. In addition, when an activator is used in combination, the amount thereof in the composition is preferably 0.1 to 70%,
1 to 50% is more preferable.

Examples of the peroxymonosulfate include sodium peroxysulfate, potassium peroxysulfate, and ammonium peroxysulfate, among which potassium peroxysulfate is most preferred. Generally, potassium peroxy-sulfate is Kl(SO5:KIISO,:KZSO,=
It is commercially available in the form of a 2:1:1 double salt (theoretical effective oxygen concentration 5.2%: city version approximately 4.3%). Examples of the peroxydisulfate include sodium peroxydisulfate, potassium peroxydisulfate, and ammonium peroxydisulfate, among which sodium peroxydisulfate and ammonium peroxydisulfate are most preferred.

The amount of this type of peroxysulfate in the composition is preferably 1 to 95%, more preferably 5 to 90%, particularly preferably 30 to 90%.

As the organic peroxide, organic peracids, or alkali metal salts or alkaline earth metal salts of organic peracids are particularly preferred. Examples of organic peracids include monoperacids of aliphatic carboxylic acids such as peracetic acid, perpropionic acid, perbutyric acid, percaprylic acid, and perlauric acid, succinic acid, glutaric acid, adipic acid,
Azelaic acid, 1,9-nonanedicarboxylic acid, 1°10
- monoperacid or diperacid of aliphatic dicarboxylic acid such as decanedicarboxylic acid, 1,11-undecanedicarboxylic acid, 1,12-dodecanedicarboxylic acid, perbenzoic acid, monoperphthalic acid, diperphthalic acid, monoperacid, Examples include mono- and dicarboxylic aromatic carboxylic acids such as perterephthalic acid, diperterephthalic acid, and parachloroperbenzoic acid, or alkali metal salts and alkaline earth metal salts of these organic peracids. Among these, perphthalic acid and its salts, dodecanedicarboxylic acid and its salts are preferred, and monoperphthalic acid magnesium salt is particularly preferred, and the amount of this type of organic peroxide in the composition is preferably 5 to 95%. , more preferably 10-9
0%, particularly preferably 30-90%.

Next, silicone oil and its emulsion, which are the second components of the present invention, will be explained.

What is generally referred to as silicone oil includes dimethylpolysiloxane and its modified products.

Dimethylpolysiloxane having any viscosity can be used in the present invention, but preferably one having a kinematic viscosity of 10 to 300,000 centistokes at 25°C. Modified polysiloxanes include epoxy modification, alkyl modification, amino modification, carboxyl modification, alcohol modification, fluorine modification, alkyl aralkyl polyether modification, epoxy/polyether modification, polyether modification,
There are various modification methods such as olefin modification, α-methylstyrene modification, higher fatty acid modification, etc., and in the present invention, products produced by any of these modification methods can be used, but more preferably carboxyl modification, It is preferable to use alcohol modification, alkyl aralkyl polyether modification, epoxy/polyether modification, or polyether modification. In addition, the emulsion of silicone oil may generally be any emulsion made by emulsifying dimethylpolysiloxane with an emulsifier, but it is particularly preferable to use an oil-in-ice type emulsion in which a nonionic surfactant is used as the emulsifier.

The amount of these silicone oils in the composition is o, oos
~25% is preferred, more preferably 0.25~5%, and the concentration in the solution at the time of use is preferably 0.25%.
001 to 5%, more preferably 0.005 to 1%, particularly preferably 0.01 to 1%.

The effect of the mold removal composition of the present invention can be further enhanced by further adding the following alkaline agent.

Alkali metal hydroxides such as sodium hydroxide and potassium hydroxide, ammonium hydroxide, or amine derivatives such as mono-, di-, and triethanolamine, alkali metal carbonates such as sodium carbonate and potassium carbonate, ammonium carbonate, etc. Alkali metal orthophosphates such as sodium orthophosphate and potassium orthophosphate, orthophosphates such as ammonium orthophosphate, alkali metal silicates such as sodium silicate and potassium silicate, silicates such as ammonium silicate, etc. can be used. .

The amount of these alkaline agents in the composition is preferably 2
% or more, more preferably 5 to 90%. The concentration in the solution during use is preferably 0.5% or more, more preferably 1 to 20%.

If necessary, an activator such as an anionic activator, a nonionic activator, a cationic activator, or a zwitterion activator can be added to the composition of the present invention.

Examples of anionic activators include sulfate ester salts of higher alcohols having 10 to 22 carbon atoms, carboxylic acid salts having 10 to 22 carbon atoms, α-olefin sulfonates having 10 to 22 carbon atoms, and alkyl groups having 10 to 22 carbon atoms. alkylbenzene sulfonates with carbon atoms, paraffin sulfonates with 10 to 22 carbon atoms, alkyl sulfosuccinates with alkyl groups with 8 to 22 carbon atoms, ethylene oxide adducts of higher alcohols with 10 to 22 carbon atoms (number of moles added: 1 ~10
Examples include the sulfuric ester of 0) and the sulfuric ester of alkylphenol polyethylene glycol ether having an alkyl group having 8 to 22 carbon atoms.

Examples of nonionic activators include higher alcohols with linear or branched chains having 10 to 22 carbon atoms, polyethylene glycol ether (degree of polymerization: 3 to 100), and ethylene glycol ether having 1 carbon number.
Poly of 0 to 22 carboxylic acids (degree of polymerization: 3 to 100)
Ethylene glycol ester, alkylphenol poly having an alkyl group having 8 to 22 carbon atoms (degree of polymerization: 3 to 1)
00) Ethylene glycol ether and the like can be exemplified.

In addition, if necessary, solubilizing agents such as sodium p-1-luenesulfonate, sodium xylene sulfonate, and urea, fillers such as sodium chloride and sodium sulfate, aluminum silicates such as montmorillonite, magnesium silicate such as sepiolite, and attapulgite, Calcium carbonate, abrasives such as silicon dioxide, amorphous silica, pigments,
Dyes, fragrances, etc. can be added.

When using the mold remover of the present invention, if necessary, the composition is added to water to a concentration of 0.5 to 50%, preferably 1 to 30%, and made into a solution, slurry, or paste. It is desirable to spray or spray it on the target surface immediately. To give a more specific example, a composition containing hydrogen peroxide or an organic or inorganic peroxide that generates hydrogen peroxide in an aqueous solution has an effective oxygen concentration of 0.1 to 10%, preferably 0. The pH is preferably 8-13, more preferably 9-11.

The composition containing peroxymonosulfate or peroxydisulfate in the present invention is used so that the organic oxygen concentration is 0.1 to 1.5%, preferably 0.2 to 1.0%. It is preferable that all be 5 to 13, more preferably 6 to 11.

When using a composition containing an organic peroxide in the present invention, it is preferable that the effective oxygen content is 0.2 to 3%, and the pH is suitably 5 to 11. More preferably it is 6-10.

〔Effect of the invention〕

The mold remover composition of the present invention has no peculiar chlorine odor, and even if mixed with an acidic cleaning agent by mistake, there is no risk of generating chlorine gas, so it can be used with confidence.

〔Example〕

The present invention will be described below with reference to Examples, but the present invention is not limited to these Examples.

Mold removal rate: The mold removal rate is based on Cladosporium herbalum (Cla.
dosporium herbarum) and inoculated with 3
0℃.

A clay plate cultured for 7 days was used as a model mold plate, and the reflectance was measured before and after treatment.

(Calculation formula) % formula % RO is the reflectance of the unglazed plate before mold inoculation R3 is the reflectance of the mold plate before treatment RW is the reflectance measurement of the mold plate after treatment Model name NDR manufactured by Nippon Denshoku Industries Co., Ltd. -101DP Color Difference Meter Example 1 A composition obtained by adjusting the formulation shown in Table 1 was sprayed onto a mold plate, and the mold removal rate was measured after 15 minutes.

In both cases, the pH was adjusted to 8.0 with Na0II. The results are shown in Table 1.

Table 1 (Note) ml ll-48; Magnesium monoperphthalate 611zO (Interox) *2KF-96
; Dimethylpolysiloxane 10 centistokes (Shin-Etsu Chemical) $3 B is an abbreviation for balance (amount that makes the whole 100) Example 2 A composition obtained by adjusting the formulation shown in Table 2 was sprayed on a mold plate. The mold removal rate was measured after 15 minutes.

pi was adjusted with NaOH in all cases. The results are shown in Table 2.

Table 2 (Note) *4PC; Sodium carbonate-IJium hydrogen peroxide adduct book 5 GPAc; Glucose pentaacetate
(Sigma) Book 6 0XONE; Potassium monopersulfate double salt (nu Pant) Umbrella 7 5H3746; Polyether-modified polysiloxane 130 centistokes (Toray Silicone) *8SF8427; Alcohol-modified polysiloxane 32
0 Centistokes (Torre Silicone) Example 3 A composition obtained by adjusting the formulation shown in Table 3 was sprayed onto actual mold stains, and after 300 mm, the mold removal ability was sensory evaluated.

In Comparative Examples 5 to 7 in Table 3, mold remained in spots, but in Inventions 5 to 7, mold was bleached white and good mold removal results were obtained.

Table 3■ ((1)*9 PETA: Pentaerythritol tetraacetate 1105M5571; Dimethylpolysiloxane emulsion silicone 35%/Nonionic activity 15% (Toray Silicone)

Claims (1)

[Scope of Claims] 1. A mold removal composition characterized by containing peroxide and silicone oil or/and an emulsion thereof. 2. The peroxide is hydrogen peroxide, sodium carbonate/hydrogen peroxide adduct, sodium perborate, peroxymonosulfate, peroxydisulfate, perphthalic acid and its salts, dodecane dipercarboxylic acid and its salts. 1 selected from the group
The mold-killing agent composition according to claim 1, which comprises one or more types. 3. The kinematic viscosity (25℃) of silicone oil is 10-30
Claim 1 which is 0,000 centistokes
The mold remover composition described in Section 1. 4. The mold remover composition according to claim 1, wherein the silicone oil emulsion is an oil-in-water emulsion emulsified with a nonionic surfactant. 5. A mold remover composition containing peroxide, silicone oil or/and an emulsion thereof, and an alkaline agent.