Multi-part kit system for the preparation of a disinfectant of the peracetic acid type
View Patent ↗A multi-part kit system comprising a solid part A which comprises at least one acetyl donor, a liquid part B in the form of an aqueous composition which comprises 3 to 35 wt. % of hydrogen peroxide and one or more parts C, wherein the solid part A and/or the part(s) C comprise at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants, wherein the composition of the parts of the multi-part kit system is such, that directly after being mixed with each other and water in a specified ratio the pH of the mixture is in the range of 5.5 to 8.
1. A multi-part kit system comprising a solid part A which comprises at least one acetyl donor, a liquid part B in the form of an aqueous composition which comprises 3 to 35 wt. % of hydrogen peroxide and one or more parts C, wherein the solid part A or the part(s) C or the solid part A and the part(s) C comprise at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants, wherein the composition of the parts of the multi-part kit system is such, that directly after being mixed with each other and water in a specified ratio the pH of the mixture is in the range of 5.5 to 8.
2. A two-part kit system consisting of a solid part A which comprises at least one acetyl donor and at least one surfactant selected from the group consisting of anionic surfactants, amphoteric surfactants and nonionic surfactants and a liquid part B in the form of an aqueous composition which comprises 3 to 35 wt. % of hydrogen peroxide, wherein the composition of parts A and B is such, that directly after being mixed with each other and water in a specified ratio the pH of the mixture is in the range of 5.5 to 8.
3. The multi-part kit system of claim 1 or the two-part kit system of claim 2 wherein the solid part A is a flowable powder or takes the form of pellets or tablets.
4. The multi-part kit system of claim 1 or the two-part kit system of claim 2 wherein the solid part A comprises only solid constituents.
5. The two-part kit system of claim 2 wherein the solid part A comprises at least one constituent selected from the group consisting of solid inorganic dispersants, solid water-soluble inorganic fillers, solid inorganic bases, biocidal compounds other than biocidal peroxide compounds and further additives selected from the group consisting of buffers, dyes and peroxide decomposition stabilizers.
6. The two-part kit system of claim 2 wherein the specified ratio between parts A and B corresponds to a molar ratio between the acetyl groups of the at least one acetyl donor in solid part A and the hydrogen peroxide in liquid part B of 4:1 to 1:10.
7. The two-part kit system of claim 6 wherein the solid part A comprises 2 to 90 wt. % of the at least one acetyl donor and 1 to 30 wt. % of the at least one surfactant.
8. The two-part kit system of claim 6 wherein the solid part A comprises 30 to 60 wt. % of the at least one acetyl donor and 1 to 15 wt. % of the at least one surfactant.
9. The two-part kit system of claim 8 wherein the solid part A has the following composition:
30 to 60 wt. % tetraacetyl ethylene diamine (TAED),
1 to 15 wt. % polyethoxylated alcohol surfactant,
0 to 5 wt. % of solid inorganic dispersant,
0 to 69 wt. % of water-soluble solid inorganic filler,
0 to 10 wt. % of solid inorganic base,
0 to 25 wt. % of quaternary ammonium chloride, and
0 to 5 wt. % of one or more further additives selected from the group consisting of buffers, dyes and peroxide decomposition stabilizers,
wherein the sum of the wt. % totals 100 wt. %.
10. The multi-part kit system of claim 1 or the two-part kit system of claim 2 wherein the liquid part B has a pH value of 3.5 to 8.
11. The multi-part kit system of claim 1 or the two-part kit system of claim 2 wherein the liquid part B is composed of 3 to 35 wt. % of hydrogen peroxide, 0.05 to 0.5 wt. % of alkali hydroxide, 0.005 to 1 wt. % of at least one transition metal sequestering agent, 0 to 10 wt. % of at least one further additive selected from the group consisting of surfactants, hard water sequestrants and corrosion inhibitors; and the wt. % proportion remaining is water to make 100 wt. %.
12. A process for the preparation of a peracetic acid disinfectant comprising (i) mixing all parts of the multi-part kit system of claim 1 and water in the specified mixing ratio or (ii) mixing parts A and B of the two-part kit system of claim 2 and water in the specified mixing ratio.
13. The process of claim 12 , wherein the mixing is performed at temperatures of 5 to 10° C.
14. The process of claim 12 wherein the preparation of the peracetic acid disinfectant is performed 5 to 15 minutes prior to use by applying to a surface for a surface disinfection application.
15. The process of claim 13 wherein the preparation of the peracetic acid disinfectant is performed 5 to 15 minutes prior to use by applying to a surface for a surface disinfection application.
16. The process of claim 14 wherein applying to a surface is performed by fogging, wiping, brushing, dipping, or rinsing.
17. The process of claim 14 wherein applying to a surface is performed with a knapsack spray or a pressure washer set.
18. The process of claim 14 wherein equipment is disinfected by immersing the equipment in the peracetic acid disinfectant.