Surface disinfectant with residual biocidal property
A biofilm sealant is provided imparting a residual biocidal property. The biofilm sealant 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 biofilm sealant 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.
1. A biocidal composition 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 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 quaternary ammonium compound (QAC) having the 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;
wherein the biocidal composition is a biofilm sealant.
2. The biocidal composition according to claim 1 , wherein the polyoxazoline is prepared with a monomer of ethyloxazoline.
3. The biocidal composition according to claim 2 , wherein ethyloxazoline is copolymerized with a heterocyclic monomer.
4. The biocidal composition according to claim 1 , wherein the disinfectant formulation is in a form of a liquid.
5. The biocidal composition 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. A biocidal composition 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,
a quaternary ammonium compound or a mixture of quaternary ammonium compounds present in a range of 0.3% to 4% based on the weight of the disinfectant formulation, and
wherein the composition is a biofilm sealant having a residual biocidal property and
the quaternary ammonium compound (QAC) has 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.
7. The biocidal composition according to claim 5 , wherein the biocidal 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.
8. The biocidal composition according to claim 1 , further comprising a carrier comprised of a solvent or a mixture of solvents.
9. The biocidal composition according to claim 8 , 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.
10. The biocidal composition according to claim 9 , wherein the alcohol is present in an amount of at least 10%.
11. The biocidal composition according to claim 1 , further comprising a surfactant or a wetting agent.
12. The biocidal composition according to claim 11 , wherein the surfactant is present in a range of 0.01% to 2%.