Aminoalcohol and biocide compositions for aqueous based systems
View Patent ↗Biocidal compositions and their use in aqueous media, such as metalworking fluids, the compositions comprising a biocidal agent; and a non-biocidal primary amino alcohol compound of the formula (I); wherein R 1 , R 2 , R 3 , R 4 , and R 5 are as defined herein.
1. A biocidal composition comprising:
a biocidal agent selected from the group consisting of 1,3,5-tris(2-hydroxyethyl)-s-triazine, iodopropynylbutylcarbamate, 1,2-benzisothiazolin-3-one, 4,4-dimethyloxazolidine, 7-ethyl bicyclooxazolidine, a combination of 4-(2-nitrobutyl)-morpholine with 4,4′-(2-ethyl-2-nitrotrimethylene)dimorpholine, 2-methyl-4-isothiazolin-3-one, a combination of 5-chloro-2-methyl-4-isothiazolin-3-one with 2-methyl-4-isothiazolin-3-one, 2-bromo-2-nitro-1,3-propanediol, octylisothiazolinone, dichloro-octylisothiazolinone, dibromo-octylisothiazolinone, phenolics and their corresponding sodium and/or potassium salts, sodium pyrithione, zinc pyrithione, n-butyl benzisothiazolinone, 1-(3-chloroallyl)-3,5,7-triaza-1-azoniaadamantane chloride, chlorothalonil, carbendazim, diiodomethyltolylsulfone, trimethyl-1,3,5-triazine-1,3,5-triethanol, 2,2-dibromo-3-nitrilopropionamide, glutaraldehyde, N,N′-methylene-bis-morpholine, ethylenedioxy methanol, phenoxyethanol, tetramethylol acetylenediurea, dithiocarbamates, 2,6-dimethyl-m-dioxan-4-ol acetate, dimethylol-dimethyl-hydantoin, tris(hydroxymethyl)nitromethane, bicyclic oxazolidines, and mixtures of two or more thereof; and
a primary amino alcohol compound of the formula:
wherein
R 1 and R 3 are each independently H, linear or branched alkyl, cycloalkyl, or R 1 is aryl while R 3 is H,
R 2 and R 4 are each independently H or alkyl, provided that R 2 and R 4 together contain 2 or fewer carbon atoms;
wherein alkyl, cycloalkyl, and aryl are optionally substituted with alkyl, and wherein the compound of formula (I) contains at least 6 carbon atoms,
and wherein the biocidal agent and the primary amino alcohol are present in an effective amount to inhibit the growth of microorganisms in an aqueous-based system.
2. The composition of claim 1 wherein the primary amino alcohol compound comprises no more than 12 carbon atoms.
3. The composition of claim 1 further comprising one or more compounds selected from the group consisting of 2-amino-2-methyl-1-propanol, 2-amino-1-ethanol, 1-amino-2-propanol, bis(2-hydroxypropyl)amine, tris(2-hydroxypropyl)amine, bis(2-hydroxyethyl)amine, tris(2-hydroxyethyl)amine, and 2-(2-aminoethoxy)ethanol.
4. The composition of claim 1 wherein R 2 is methyl.
5. The composition of claim 1 wherein R 2 is ethyl.
6. The composition of claim 1 wherein the amino alcohol compound is of the formula (II):
wherein
R 1 is C 2 -C 6 alkyl; and
R 2 and R 4 are each independently H or C 1 -C 2 alkyl,
wherein R 2 and R 4 together contain 2 or fewer carbon atoms, and wherein the compound of formula (II) contains at least 6 carbon atoms.
7. The composition of claim 1 wherein the amino alcohol compound is selected from the group consisting of: 2-amino-3-hexanol, 2-amino-2-methyl-3-hexanol, 3-amino-4-octanol, 2-amino-2-methyl-3-heptanol, 2-amino-4-ethyl-3-octanol, 2-amino-3-heptanol, 2-amino-1-phenylbutanol, and mixtures thereof.
8. The composition of claim 1 wherein the amino alcohol is 3-amino-4-octanol.
9. A method of inhibiting the growth of microorganisms in an aqueous-based system comprising adding to said system an effective amount of a biocidal composition according to claim 1 .
10. A method according to claim 9 wherein the aqueous-based system is a metal working fluid.
11. A metalworking fluid concentrate comprising a biocidal composition according to claim 1 .
12. A metalworking fluid comprising a biocidal composition according to claim 1 .
13. A metalworking fluid comprising water and a metalworking concentrate, wherein the metalworking concentrate comprises a biocidal composition according to claim 1 .
14. A composition in which microbial growth is inhibited comprising: an aqueous based system; and a biocidal composition according to claim 1 .
15. The composition according to claim 14 wherein the aqueous based system is latexes, water-based paints, water-based coatings, caulks, adhesives, tape joint compounds, mineral slurries, water-cooling systems, personal care products, soaps and detergents, disinfectants, cleaners, sanitizers, pesticide products, oilfield water, and water-based fluids used in oilfield applications such as drilling muds, fracturing fluids, and hydrotest fluids.
16. The composition according to claim 14 wherein the aqueous based system is a metal working fluid.
17. A compound selected from the group consisting of 2-amino-4-ethyl-3-octanol, 2-amino-2-methyl-3-heptanol, and salts thereof.
18. The composition of claim 1 wherein the biocidal agent is a triazine compound, a phenolic compound, iodopropynylbutylcarbamate, a combination of 4-(2-nitrobutyl)-morpholine with 4,4′-(2-ethyl-2-nitrotrimethylene)dimorpholine, 1,2-benzisothiazolin-3-one, 2-methyl-4-isothiazolin-3-one, a combination of 5-chloro-2-methyl-4-isothiazolin-3-one with 2-methyl-4-isothiazolin-3-one, octylisothiazolinone, dichloro-octylisothiazolinone, dibromo-octylisothiazolinone, n-butyl benzisothiazolinone, n,n′-methylene-bis-morpholine, or a mixture thereof.