Water Treatment Composition
The present invention relates to a stabilized water treatment composition, containing (i) an effective amount of a hydrogen peroxide source, (ii) a first stabilizing agent, and (iii) a second stabilizing agent; which is essentially free of any peracid-based compounds, derivatives or salts thereof. A method for the using the stabilized water treatment composition to kill or to inhibit the growth of microorganisms such as gram positive or gram negative bacteria, algae, cyanobacteria, viruses, fungi, mildew, mold or combinations thereof, for various water sources such as streams, ponds, lakes, recirculating water systems, surface water, and any other suitable or desirable water sources is also described.
1 . A stabilized water treating composition comprising
(i) an effective amount of a hydrogen peroxide source,
(ii) a first stabilizing agent which comprises picolinic add, a compound having the Formula (IA) or Formula (IB):
or a salt thereof;
or a salt thereof;
wherein
R 1 is OH or —NR Ia R Ib , wherein R Ia and R Ib are independently hydrogen or (C 1 -C 6 ) alkyl,
R 2 is OH or —NR 2a R 2b , wherein R 2a and R 2b are independently hydrogen or (C 1 -C 6 ) alkyl;
each R 3 is independently (C 1 -C 6 ) alkyl, (C 2 -C 6 ) alkenyl or (C 2 -C 6 ) alkynyl; and
n is a number from zero to 3; and
(iii) a second stabilizing agent, comprising a compound having the following Formula (IIA) or Formula (IIB):
or salt thereof;
or salt thereof;
wherein
R 4 , R 5 , R 6 , and R 7 are each independently hydrogen, (C 1 -C 6 ) alkyl, (C 2 -C 6 ) alkenyl or (C 2 -C 6 ) alkynyl, (C 6 -C 20 ) aryl, or X; wherein X is lithium, sodium, potassium or any combinations thereof;
R 8 is (C 1 -C 6 ) alkyl, (C 2 -C 6 ) alkenyl or (C 2 -C 6 ) alkynyl; and
R 9 is hydrogen, (C 1 -C 6 ) alkyl, (C 2 -C 6 ) alkenyl or (C 2 -C 6 ) alkynyl; and
wherein the composition is essentially free of any peracid-based compounds, derivatives or salts thereof.
2 . The stabilized water treating composition, according to claim 1 , wherein R 4 , R 5 , R 6 , and R 7 , having a Formula (IIA) or (IIB), are each independently hydrogen, or X;
wherein X is lithium, sodium, or potassium.
3 . The stabilized water treating composition, according to claim 1 , wherein R 8 and R 9 are each a (C 1 -C 6 ) alkyl group.
4 . The stabilized water treating composition, according to claim 1 , wherein the first stabilizing agent comprises 2,6-pyridine dicarboxylic acid or salt thereof.
5 . The stabilized water treating composition, according to claim 1 , wherein the second stabilizing agent comprises 1-hydroxyethane-1,1-diphosphonic acid (HEDP) or a salt thereof.
6 . The stabilized water treating composition, according to claim 1 , wherein the hydrogen peroxide source is selected from the group comprising a hydrogen peroxide solution, sodium percarbonate, potassium percarbonate, sodium perborate, potassium perborate, hydrogen peroxide urea or peroxide salts, or combinations thereof; and wherein the concentration of the hydrogen peroxide source is from 3% to about 50 w/w % of the total weight of the composition.
7 . The stabilized water treating composition, according to claim 6 , wherein the hydrogen peroxide source is a hydrogen peroxide solution; and wherein the concentration of the hydrogen peroxide solution may be from about 5% to about 37 w/w %, based on the total weight of said composition.
8 . The stabilized water treating composition, according to claim 7 , wherein the concentration of the hydrogen peroxide solution may be from 7% to about 30 w/w %, based on the total weight of said composition.
9 . The stabilized water treating composition, according to claim 1 , wherein the first stabilizing agent is present in an amount from about 0.01% to about 2 w/w %, based on the total weight of said composition.
10 . The stabilized water treating composition, according to claim 1 , wherein the second stabilizing agent is present in an amount from about 0.01% to about 20 w/w %, based on the total weight of said composition.
11 . The stabilized water treating composition, according to claim 1 , wherein said composition retains at least 90% of the hydrogen peroxide source activity, after about 30 days of storage, at about 45° C.
12 . The stabilized water treating composition, according to claim 1 , wherein said composition retains at least 95% of the hydrogen peroxide source activity, after about 30 days of storage, at about 45° C.
13 . The stabilized water treating composition, according to claim 1 , further comprising an aqueous solvent, selected from a group comprising of water, aqueous alcohol, ammonia water, ethylene glycol, propylene glycol and combinations thereof.
14 . The stabilized water treating composition, according to claim 1 , further comprising a second biocidal agent, wherein the second biocidal agent is present from about 0.1% to about 25 w/w % of the total composition; and wherein the second biocidal agent is essentially free of a peracid-based compounds, derivatives or salts thereof.
15 . The stabilized water treating composition, according to claim 1 , wherein the composition is completely free of any peracid-based compounds, derivatives or salts thereof.
16 . The stabilized water treating composition, according to claim 1 , further comprising a sequestering agent, wherein the sequestering agent is present from about 0.1 to about 5 w/w % of the total composition.
17 . The stabilized water treating composition, according to claim 1 , further comprising a corrosion inhibitor, wherein the corrosion inhibitor is present from about 0.01% to 20 w/w % of the total composition.
18 . The stabilized water treating composition, according to claim 1 , further comprising an optional anti-foaming agent; wherein the anti-foaming agent is polydimethylsiloxane anti-foam.
19 . The stabilized water treating composition, according to claim 1 , wherein the hydrogen peroxide source is a hydrogen peroxide solution; the first stabilizing agent is 2,6-pyridine dicarboxylic acid or salt thereof and the second stabilizing agent is HEDP or a salt thereof.
20 . A method of treating water for reducing the concentration of microbes in the water, said method comprises adding an effective amount of the stabilized water treating composition according to claim 1 to the water to be treated, in an amount sufficient to kill majority of the microbes located in the water being treated.
21 . The method of treating water, according to claim 20 , wherein the method comprising ready-to-use composition of the water treating composition to inhibit growth of one or more micro-organisms therein and/or to reduce the number of live micro-organisms therein.
22 . The method of treating water, wherein the method comprising a composition, according to claim 1 , wherein the treated water source comprises from about 1 ppm to about 1,000 ppm of a hydrogen peroxide source.
23 . The method of treating water, wherein the method comprising a composition, according to claim 1 , wherein the treated water source comprises from about 1 ppm to about 100 ppm of a hydrogen peroxide source
24 . The method of claim 20 , wherein the water is surface water and the microbes in the water comprises algae, cyanobacteria or combinations thereof.