Disinfecting detergent

Abstract

A disinfecting detergent comprising 0.1-6% (w/w %) of hydrogen peroxide, 0.01-0.6% (w/w %) of peracetic acid, 0.01-2% (w/w %) of an ion-pair reagent and/or a phase transfer catalyst, 0.01-1% (w/w %) of a surfactant, 0.1-3% (w/w %) of a base, 0-1% (w/w %) of a stabilizer, and 90-96% (w/w %) of water, where the pH value of the disinfecting detergent is 7.1-9.9. The disinfecting detergent has the advantages of low toxicity, low corrosivity, no pungent smell and fast, broad-spectrum and high-efficiency sterilization, virus killing effect and spore killing effect.

Claims

1. A disinfecting detergent composition comprising: 0.1%-6% (w/w %) of hydrogen peroxide (HP) and 0.01%-0.6% (w/w %) of peracetic acid (PAA) as disinfecting actives, 0.01%-2% (w/w %) of an ion-pair reagent and/or a phase transfer catalyst, 0.01%-1% (w/w %) of a surfactant, 0.1%-3% (w/w %) of a base, wherein the base comprises sodium carbonate and another compound selected from the group consisting of sodium hydroxide, sodium phosphate, tetrabutyl ammonium hydroxide, benzylamine and ammonium hydroxide, 0-1% (w/w %) of a stabilizer, and 90%-96% (w/w %) of water, wherein the pH of the composition is 8.2-9.9.

2. The composition of claim 1, wherein said disinfecting detergent is characterized in converting hydrogen peroxide and peracetic acid to high oxidizing metastable anions, which have fast disinfecting ability and make PAA become non-volatile peracetate (NVPA), thus eliminating the strong pungent odor due to PAA.

3. The composition of claim 1, wherein the ion-pair reagent and/or phase transfer catalyst is tetrabutylammonium hydroxide (TBAH), cetyltrimethylammonium bromide (CTAB), or a mixture thereof.

4. The composition of claim 1, wherein the surfactant is a mixture of at least one selected from the group consisting of sulfonate surfactants and phosphonate surfactants.

5. The composition of claim 1, wherein the stabilizer is a metal complexing agent selected from the group consisting of 8-hydroxyquinoline, sodium pyrophosphate, 1-Hydroxyethylidene-1, 1,-diphosphonic acid (HEDPA), and ethylene diamine tetraacetate (EDTA).

6. The composition of claim 4, wherein the phosphonate surfactant is selected from the group consisting of 1-Hydroxyethylidene-1,1,-diphosphonic acid (HEDPA) and the free acid form of a tridecyl alcohol ethoxylated phosphate ester.

7. The composition of claim 4, wherein the sulfonate surfactant is selected from the group consisting of sodium dodecyl sulfate (SDS) and dodecyl amine sulfonate.

8. The composition of claim 1, wherein said pH of the composition is 9.0-9.5.

9. A method of disinfecting, comprising applying the composition of claim 1 to a surface or area in need of disinfecting.

Description

DESCRIPTION OF THE FIGURES

(1) FIG. 1. The dissociation rate and concentration of PAA in aqueous solution changes with pH of the aqueous solution. PAA means peracetic acid, and NVPA means peracetic acid anion.

(2) FIG. 2. Relation between degradation time and degradation rates of sodium thiosulfate and its degradation products. The concentrations of PAA and HP were 17.4 and 64.8 mM respectively, the concentration of sodium thiosulfate was 5.0 mM, the pH of PAA solution was 2, and the pH of NVPA solution was 9.3.

(3) FIG. 3. Reaction of L-ascorbic Acid (LAA) with 6.0 mM, HP with 64.8 mM, and PAA with 47.8 mM in an aqueous solution. The pH of the acidic solution was 2.3. The pH of the alkaline solution was 9.4.

(4) FIG. 4. The pH of PAA solution was 9.3. The initial concentrations of PAA and HP were 0.2% (w/w %) and 4% (w/w %), respectively. The pH of the solution was adjusted by sodium hydroxide solution or sodium phosphate solution, and sodium carbonate or a stabilizer such like sodium pyrophosphate was used to stabilize PAA. The quantitative determination of PAA/NVPA was performed by ion-exchange chromatography.

DETAILED DESCRIPTION OF THE INVENTION

(5) The following description of embodiments is merely exemplary in nature and is in no way intended to limit the scope of invention.

(6) A disinfecting detergent includes the following components:

(7) Disinfecting actives: Hydrogen peroxide: 0.1-6% (w/w %), Peracetic acid: 0.01-0.6% (w/w %);

(8) Ion pair reagent and/or phase transfer catalyst: 0.01-2% (w/w %);

(9) Surfactant: 0.01%-1% (w/w %);

(10) Base: 0.1-3% (w/w %);

(11) Stabilizer: 0-1% (w/w %); and

(12) Water: 90-96% (w/w %).

(13) The pH of the disinfecting detergent is between 7.1 and 9.9, and typically between 9 and 9.5 for normal use.

(14) Under alkaline conditions (pH value of 7.1-9.9, the best use of pH between 9-9.5), hydrogen peroxide and peracetic acid will be converted to high oxidizing metastable anions, which have fast disinfecting ability and make PAA become non-volatile peracetate (NVPA), thus decreasing or eliminating the strong pungent odor due to PAA.

(15) The ion pair reagent and phase transfer catalyst may be TBAH and CTAB or a mixture thereof, which will help disinfecting actives to contact to the microorganisms in a complex application environment to kill them quickly. Surfactants include a sulfonate surfactants, phosphonate surfactants, and mixtures thereof. The phosphonate surfactants may be HEDPA and Dextrol OC-40 Phosphate Ester. The sulfonate surfactants may be SDS and ammonium lauryl sulfonate.

(16) Bases may be sodium hydroxide, sodium carbonate, sodium phosphate and organic bases, such as TBAH, benzylamine or ammonium hydroxide. These compounds will react with hydrogen peroxide and peracetic acid to form the corresponding anions.

(17) Stabilizers may be metal complexing agents, such as 8-hydroxyquinoline, sodium pyrophosphate, HEDPA and EDTA. The test results indicate that sodium carbonate can also play an important role in stabilizing peracetic acid anion.

(18) The components of the disinfecting detergent include two groups called Part A and Part B.

(19) Part A comprises: disinfecting actives: hydrogen peroxide, 0.1-10% (w/w %); peracetic acid, 0.01-0.8% (w/w %); a metal complexing agent: HEDPA and sodium pyrophosphate, 0.01-1% (w/w %); and water: 90-94% (w/w %).

(20) Part B comprises: ion pair reagents and phase transfer reagent, 0.01-2% (w/w %); surfactants, 0.01-1% (w/w %); bases 0.1-3% (w/w %); and water: 90-96% (w/w %).

(21) The pH of the disinfecting detergent is between 7.0 and 9.9, and typically, between 9 and 9.5.

(22) A non-limiting embodiment is as follows. Disinfection active is hydrogen peroxide and peracetic acid; ion pair reagent and a phase transfer reagent is tetrabutylammonium hydroxide (TBAH) or cetyl trimethyl ammonium bromide; surfactant sodium dodecyl sulfonate (SDS) or 1-hydroxyethylidene-1, 1,-diphosphonic acid (HEDPA); the base is an inorganic base, such as sodium hydroxide, ammonium hydroxide, sodium carbonate, sodium phosphate, and organic bases, such as tetrabutyl ammonium, benzylamine; and stabilizers are pyrophosphate, 1-Htdroxyethylidene-1, 1-diphosphonic acid (HEDPA).

(23) Preparation examples of disinfectant cleaners are described in the following tables.

(24) TABLE-US-00003 TABLE 3 Preparation examples of disinfectant cleaners Formulation 1 of disinfectant cleaner Part A Part B PAA HP SPP Water NaOH TBAH SDS Water (%) (%) (%) (%) (%) (%) (%) (%) Conc in 0.45 8.0 0.20 >91 0.60 1.00 0.10 >98 Part A or Part B (%) Conc in 0.225 4.0 0.10 0.30 0.50 0.05 >94 mixed (%)

(25) TABLE-US-00004 TABLE 4 Preparation examples of disinfectant cleaners Formulation 2 of disinfectant cleaner Part A Part B PAA HP HEDP Water Na.sub.2CO.sub.3 TBAH CTAB Water (%) (%) (%) (%) (%) (%) (%) (%) Conc in 0.70 5.00 0.20 >94 0.88 1.00 0.20 >97 Part A or Part B (%) Conc in 0.35 2.50 0.10 0.44 0.50 0.10 >95 mixed (%)

(26) Based on scientific studies, the disinfecting detergent uses hydrogen peroxide, peracetic acid, ion pair/phase transfer catalyst reagents (quats) and water, etc., to kill bacteria, viruses and spores quickly. Since the broad-spectrum disinfectant cleaners have low causticity, low toxicity, non-irritating odor, low residues and other good environmental features, they may be used in a variety of public places and households, and various types of stations, such as bus/train stations, airport lounges, hospitals, restaurants and family health. The disinfecting detergent is especially suitable for large area spray in the Influenza, plague area to kill bacteria, virus and spores quickly, which can reduce influenza and plague outbreak and spread significantly.