Surface disinfectant with residual biocidal property
A disinfectant formulation is provided imparting a residual biocidal property. The disinfectant formulation is used to treat a surface to impart a film having a capacity to quickly kill bacteria and other germs for at least 24 hours after deposit of the film on a treated surface. The disinfectant formulation comprises a polymer binder, wherein the polymer binder is an oxazoline homopolymer or an extended or a modified polymer based on an oxazoline homopolymer, and a biocidal compound. The disinfectant formulation further comprises a carrier. An article having the disinfectant formulation is provided as well as methods of making, using and applying the disinfectant formulation.
1. A disinfectant formulation imparting a residual biocidal property, the disinfectant formulation comprising:
a polyoxazoline present in a range of 0.2% to 4% based on the weight of the disinfectant formulation, the polyoxazoline having a structure of
wherein: R 1 is methyl; R 2 is hydroxyl; R 3 is ethyl; and n=10 to 1,000,000, and
a quaternary ammonium compound (QAC) or a mixture of quaternary ammonium compounds present in a range of 0.3% to 4% based on the weight of the disinfectant formulation, the QAC having a structure of
wherein
R 1 is methyl;
R 2 is alkyl C8-10; methyl-benzyl; or ethyl-benzyl;
R 3 is methyl;
R 4 is alkyl C8-18;
and
X − is chloride, or carbonate/bicarbonate.
2. The disinfectant formulation according to claim 1 , wherein the polyoxazoline is prepared with a monomer of ethyloxazoline.
3. The disinfectant formulation according to claim 2 , wherein ethyloxazoline is copolymerized with a heterocyclic monomer.
4. The disinfectant formulation according to claim 1 , wherein the disinfectant formulation is in a form of a liquid.
5. The disinfectant formulation according to claim 1 , wherein the quaternary ammonium compound is present in a composition comprising: N-alkyl dimethyl benzyl ammonium chloride, N-octyl decyl dimethyl ammonium chloride, di-n-decyl dimethyl ammonium chloride, and di-n-octyl dimethyl ammonium chloride.
6. The disinfectant formulation according to claim 5 , wherein the composition comprises: 40 weight % of N-alkyl dimethyl benzyl ammonium chloride, 30 weight % of N-octyl decyl dimethyl ammonium chloride, 15 weight % of di-n-decyl dimethyl ammonium chloride, and 15 weight % of di-n-octyl dimethyl ammonium chloride, wherein the percentage is a weight percentage of individual quaternary ammonium compounds based on the total weight of the quaternary ammonium compounds within the composition.
7. The disinfectant formulation according to claim 1 , further comprising a carrier comprised of a solvent or a mixture of solvents.
8. The disinfectant formulation according to claim 7 , wherein the solvent or mixture of solvents comprise water, a low molecular weight alcohol, alkylene glycol ether, a terpene or terpene derivative, and a combination thereof.
9. The disinfectant formulation according to claim 8 , wherein the alcohol is present in an amount of at least 10%.
10. The disinfectant formulation according to claim 1 , further comprising a surfactant or a wetting agent.
11. The disinfectant formulation according to claim 10 , wherein the surfactant is present in a range of 0.01% to 2%.
12. A liquid disinfectant formulation imparting a residual biocidal property, the disinfectant formulation comprising:
a polyoxazoline present in a range of 0.2% to 4% based on the weight of the disinfectant formulation, the polyoxazoline having a structure of
wherein: R 1 is methyl; R 2 is hydroxyl; R 3 is ethyl; and n=10 to 1,000,000, and
a biocidal compound present in a range of 0.3% to 4% based on the weight of the disinfectant formulation,
0% to 99.5% water,
0% to 99.5% alcohol, and
0% to 5% of a surfactant,
wherein the biocidal compound is a quaternary ammonium compound (QAC) or a mixture of quaternary ammonium compound having a molecular structure of:
wherein
R 1 is methyl;
R 2 is alkyl C8-10; methyl-benzyl; or ethyl-benzyl;
R 3 is methyl;
R 4 is alkyl C8-18;
and
X − is chloride or carbonate/bicarbonate.
13. An article treated with a disinfectant formulation according to claim 1 comprising:
a polyoxazoline having a structure of
wherein: R 1 is methyl; R 2 is hydroxyl; R 3 is ethyl; and n=10 to 1,000,000, and
a quaternary ammonium compound (QAC) or a mixture of quaternary ammonium compounds, the QAC having a structure of
wherein
R 1 is methyl;
R 2 is alkyl C8-10; methyl-benzyl; or ethyl-benzyl;
R 3 is methyl;
R 4 is alkyl C8-18;
and
X − is chloride or carbonate/bicarbonate.
14. The article according to claim 13 , wherein the article is in a form of a wipe or other disposable product.
15. A method of using a disinfectant formulation according to claim 1 , the method comprising:
providing the disinfectant formulation comprised of:
(i) a polyoxazoline having a structure of
wherein: R 1 is methyl; R 2 is hydroxyl; R 3 is ethyl; and n=10 to 1,000,000,
and
(ii) a quaternary ammonium compound (QAC) or a mixture of quaternary ammonium compounds, the QAC having a structure of
wherein:
R 1 is methyl;
R 2 is alkyl C8-10; methyl-benzyl; or ethyl-benzyl;
R 3 is methyl;
R 4 is alkyl C8-18; and
X − is chloride or carbonate/bicarbonate;
and
treating a surface with the disinfectant formulation to impart a film having a capacity to quickly kill bacteria and other germs for at least 24 hours after deposit of the film on the treated surface.
16. The method according to claim 15 , wherein treating occurs by an application method selected from the group consisting of spraying, fogging, rolling, brushing, mopping, wiping, and a combination thereof.