# US 9,434,649 B2 · Method for avoiding fungal growth in mineral construction materials

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- Number: US 9,434,649 B2
- Document ID: US9434649B2
- Status: Granted
- Kind: B2
- Application number: 14/438,078
- Filed: 2013-09-04
- Published: 2015-10-01
- Granted: 2016-09-06
- Earliest claimed: 2012-10-24
- Assignees: Clariant GmbH
- Applicants: Antonio Pedro de Oliveira Filho; Alexandra Paschoalin Menezes; Wagner Claudio da Silva; Denise da Silva Oliveira; Manlio Gallotti; Marcia Regina S. Rios
- Inventors: Antonio Pedro de Oliveira Filho; Alexandra Paschoalin Menezes; Wagner Claudio da Silva; Denise da Silva Oliveira; Manlio Gallotti; Marcia Regina S. Rios
- Web page: https://patentgrep.com/patent/US9434649B2

## CPC

- C04B 28/30: containing magnesium cements {or similar cements}(magnesium oxide cements C04B28/10)
- C04B 20/1018: {with organic materials (pigments or dyes C04B20/1096)}
- C04B 40/0039: {Premixtures of ingredients}
- C04B 40/0042: {Powdery mixtures}
- C04B 2103/67: Biocides
- C04B 2111/00517: {for masonry}
- C04B 2111/70: Grouts, e.g. injection mixtures for cables for prestressed concrete
- C04B: LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE {(roofing granules E04D7/005)}; CERAMICS (devitrified glass-ceramics C03C10/00); REFRACTORIES; TREATMENT OF NATURAL STONE

## Abstract

This invention relates to a cementitious composition comprising 70-99 wt.-% of a) an inorganic carrier for biocidally active compounds, and b) 0.1-20 wt.-% of at least one bactericidally active compound, and c) 0.1-25 wt.-% of at least one fungicidally active compound, and wherein the antimicrobial composition is present in an amount of 0.01 to 10 wt.-%, based on the weight of the cementitious composition.

## Claims

### Claim 1

A cementitious composition, comprising a cementitious component and an antimicrobial composition, such antimicrobial composition comprising
a) 70-99 wt.-% of an inorganic carrier for biocidally active compounds,
b) 0.1-20 wt.-% of at least one bactericidally active compound, selected from the group consisting of (benzothiazol-2-ylthio)methyl thiocyanate, 1-(4-chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-ylmethyl)pentan-3-ol/Terbuconazole, 2,4-dichlorobenzyl alcohol, 2-chloroacetamide, 3-iodo-2-propylnyl butylcarbamate, Biphenyl-2-ol, Boric acid, 3a,4,7,7a-Tetrahydro-2-[trichloromethyl)thio]-1H-isoindole-1,3(2H)-dione), Carbendazim, Chlorothalonil,3,5-Dimethylperhydro-1,3,5-thiadiazin-2-thion, N-(Dichlorfluormethylthio)-N′,N′-dimethyl-N-phenylsulfamid), Dichloro-N-[(dimethylamino)sulphonyl]fluoro-N-(p-tolyl)methanesulphenamide/Tolylfluanid, Dichlorophen, anhydrous disodium tetraborate, Hexa-2,4-dienoic acid, N-(trichloromethylthio)phthalimide, Disodium-N,N′-ethylenebis(dithiocarbamate), P-[(diiodomethyl)sulphonyl]toluene, Pyridine-2-thiol 1-oxide sodium salt, Pyrithione zinc, Sodium 2-biphenylate, Thiabendazole, Bis(dimethylthiocarbamoyl)disulfide and zinc bis (N,N-dimethyldithiocarbamate) and
c) 0.1-25 wt.-% of at least one fungicidally active compound, selected from the group consisting of 1,2-benzisothiazol-3(2H)-one, 2,2-dibromo-2-cyanoacetamide, 2-bromo-2-(bromomethyl)pentane-dinitrile, 2-methyl-2-H-isothiazol-3-one, Bis(trichloromethyl) sulphone, Bronopol, Chlorocresol, Potassium (E,E)-hexa-2,4-dienoate, Silver chloride, Sodium hydrogen 2,2′ methylenebis[4-chlorophenolate], Sodium p-chloro-m-cresolate and 4-Chloro-3,5-dimethylphenol,
wherein the amount of the antimicrobial composition is between 0.01 and 10 wt.-%, based on the weight of the cementitious composition.

### Claim 2 (depends on 1)

The cementitious composition according to claim 1, wherein the amount of inorganic carrier in the antimicrobial composition is between 75 and 90% by weight.

### Claim 3 (depends on 1)

The cementitious composition according to claim 1, wherein the amount of bactericidally active compound in the antimicrobial composition is between 0.5 and 10% by weight.

### Claim 4 (depends on 1)

The cementitious composition according to claim 1, wherein the amount of fungicidally active compound in the antimicrobial composition is between 1 and 20 wt.-%.

### Claim 5 (depends on 1)

The cementitious composition according to claim 1, wherein the antimicrobial composition is present in an amount of between 0.1 and 2 wt.-%, based on the weight of the cementitious composition.

### Claim 6 (depends on 1)

The cementitious composition according to claim 1, wherein the inorganic carrier is selected from the group consisting of talcum, diatomaceous earth, bentonite, lime, kaolin, quartz, silica, sodium tripolyphosphate and alumina.

### Claim 7 (depends on 1)

The cementitious composition according to claim 1, wherein the antimicrobial composition is a solid added to the cementitious composition as a powder or a suspension in a suitable suspending liquid.

### Claim 8 (depends on 1)

The cementitious composition according to claim 1, wherein the weight ratio between the bactericidally active compound and the fungicidally active compound is from 1:6 to 1:2.

### Claim 9 (depends on 1)

The cementitious composition according to claim 1, wherein the cementitious component is selected from the group consisting of grout, mortar, monolayer render and ceramics.

### Claim 10 (depends on 1)

The cementitious composition according to claim 1, wherein the fungicidally active compound is 3-iodo-2-propynyl butyl carbamate and the bactericidally active compound is 1,2-benzisothiazol-3(2H)-one.

### Claim 11 (depends on 10)

The cementitious composition according to claim 10, wherein 3-iodo-2-propynyl butyl carbamate and 1,2-benzisothiazol-3(2H)-one are present in a 4:1 weight ratio.

### Claim 12 (depends on 10)

The cementitious composition according to claim 10, wherein 3-iodo-2-propynyl butyl carbamate and 1,2-benzisothiazol-3(2H)-one are homogeneously dispersed on the surface of an inert solid and form a powder.

### Claim 13 (depends on 12)

The cementitious composition according to claim 12, wherein the inert solid is aluminum silicate.

### Claim 14

A process for inhibiting bacterial and fungal growth on cementitious compositions, the process comprising the step of adding to the cementitious composition an antimicrobial composition comprising
a) 70-99 wt.-% of an inorganic carrier for biocidally active compounds, and
b) 0.1-20 wt.-% of at least one bactericidally active compound, selected from the group consisting of (benzothiazol-2-ylthio)methyl thiocyanate, 1-(4-chlorophenyl)-4,4-dimethyl-3-(1,2,4-triazol-1-ylmethyl)pentan-3-ol/Terbuconazole, 2,4-dichlorobenzyl alcohol, 2-chloroacetamide, 3-iodo-2-propylnyl butylcarbamate, Biphenyl-2-ol, Boric acid, 3a,4,7,7a-Tetrahydro-2-[trichloromethyl)thio]-1H-isoindole-1,3(2H)-dione), Carbendazim, Chlorothalonil,3,5-Dimethylperhydro-1,3,5-thiadiazin-2-thion, N-(Dichlorfluormethylthio)-N′,N′-dimethyl-N-phenylsulfamid), Dichloro-N-[(dimethylamino)sulphonyl]fluoro-N-(p-tolyl)methanesulphenamide/Tolylfluanid, Dichlorophen, anhydrous disodium tetraborate, Hexa-2,4-dienoic acid, N-(trichloromethylthio)phthalimide, Dinatrium-(N,N′-ethylenbis(dithiocarbamat), P-[(diiodomethyl)sulphonyl]toluene, Pyridine-2-thiol 1-oxide sodium salt, Pyrithione zinc, Sodium 2-biphenylate, Thiabendazole, Bis(dimethylthiocarbamoyl)disulfid and zinc bis(N,N-dimethyldithiocarbamat and
c) 0.1-25 wt.-% of at least one fungicidally active compound, selected from the group consisting of 1,2-benzisothiazol-3(2H)-one, 2,2-dibromo-2-cyanoacetamide, 2-bromo-2-(bromomethyl)pentane-dinitrile, 2-methyl-2-H-isothiazol-3-one, Bis(trichloromethyl) sulphone, Bronopol, Chlorocresol, Potassium (E,E)-hexa-2,4-dienoate, Silver chloride, Sodium hydrogen 2,2′methylenebis[4-chlorophenolate], Sodium p-chloro-m-cresolate and 4-Chloro-3,5-dimethylphenol, in an amount so that the combined weight of the bactericidally active compound or compounds and of the fungicidally active compound or compounds is between 0.01 and 10 wt.-% of the cementitious composition.