Water soluble barrier film conformal coating composition
View Patent ↗A composition having a first nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 10 to about 15, a second nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20, an aqueous solvent, and optionally, a bio-film permeation agent. A total of the first surfactant and the second surfactant in the composition ranges from about 2 to about 20 percent by weight of a total weight of the composition, and a ratio of the second surfactant to the first surfactant in the composition ranges from about 2:1 to about 4:1.
1. An alkaline composition having a pH ranging from 8.5 to about 10, said alkaline composition consisting essentially of:
a first substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from 12 to about 15;
a second substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20;
optionally, a bio-film permeation agent; and
an aqueous solvent,
wherein a total of the first surfactant and the second surfactant in the composition ranges from about 2 to about 20 percent by weight of a total weight of the composition and a ratio of the second surfactant to the first surfactant in the composition ranges from about 2:1 to about 4:1.
2. The composition of claim 1 , wherein the bio-film permeation agent comprises a fatty acid sulfate.
3. The composition of claim 1 , wherein the bio-film permeation agent comprises a composition selected from the group consisting of sodium lauryl sulfate, sodium lauryl ether sulfate, ammonium lauryl sulfate, ammonium lauryl ether sulfate, sophorose biosurfactant, sodium lauroyl sarcosinate, triethanolamine lauroyl-L-glutamate, sodium myristyl sarcosinate, sodium dodecyl sulfate, potassium laurate, sodium dodecane sulfonates, and sodium lauryl ethoxysulfate.
4. The composition of claim 1 , further comprising a chelating agent.
5. The composition of claim 1 , further comprising a biocide agent.
6. The composition of claim 1 , wherein the composition has a pH ranging from about 9.0 to about 9.5.
7. The composition of claim 1 , wherein the composition comprises from about 1 to about 5 wt. % of the first alkoxylated alcohol surfactant; from about 5 to about 10 wt. % of the second alkoxylated alcohol surfactant; and from about 5 to about 20 wt. % of the permeation agent, based on the total weight of the composition.
8. The composition of claim 4 , wherein the chelating agent comprises an alkylenediamine tetraacetate compound.
9. The composition of claim 7 , further comprising a weak base in an amount sufficient to provide the composition with a pH in the range of from about 9.0 to about 9.5.
10. The composition of claim 9 , further comprising a chelating agent in an amount ranging from about 0.05 to about 1.0 wt. % of the total weight of the composition.
11. A rinse solution comprising the composition of claim 10 .
12. A soak solution comprising the composition of claim 10 .
13. An alkaline rinse solution for applying a protective film to surfaces of medical equipment, said alkaline rinse solution having a pH ranging from 8.5 to about 10 and consisting essentially of:
a first substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from 12 to about 15;
a second substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20;
optionally, from about 2 to about 5 percent by weight of a bio-film permeation agent; and
an aqueous solvent,
wherein a total of the first surfactant and the second surfactant in the solution ranges from about 8 to about 10 percent by weight of a total weight of the rinse solution and a ratio of the second surfactant to the first surfactant in the solution ranges from about 2:1 to about 4:1.
14. The rinse solution of claim 13 , wherein the rinse solution further comprises a chelating agent.
15. The rinse solution of claim 13 , wherein the rinse solution has a pH ranging from 8.5 to about 9.5.
16. The rinse solution of claim 13 , wherein the rinse solution comprises from about 1 to about 5 wt. % of the first alkoxylated alcohol surfactant, and from about 5 to about 10 wt. % of the second alkoxylated alcohol surfactant, based on the total weight of the composition.
17. An alkaline soak solution for initially cleaning surfaces of medical equipment, said alkaline soak solution having a pH ranging from 8.5 to about 10 and consisting essentially of:
a first substantially hydrophilic nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 12 to about 15;
a second nonionic alkoxylated alcohol surfactant having an HLB value ranging from about 16 to 20;
optionally, from about 5 to about 15 percent by weight of a bio-film permeation agent; and
an aqueous solvent,
wherein a total of the first surfactant and the second surfactant in the solution ranges from about 5 to about 10 percent by weight of a total weight of the soak solution and a ratio of the second surfactant to the first surfactant in the solution ranges from about 2:1 to about 4:1.
18. The soak solution of claim 17 , wherein the soak solution further comprises a chelating agent.
19. The soak solution of claim 17 , wherein the soak solution has a pH ranging from 8.5 to about 9.5.
20. The soak solution of claim 17 , wherein the soak solution comprises from about 1 to about 3 wt.% of the first alkoxylated alcohol surfactant, and from about 3 to about 8 wt. % of the second alkoxylated alcohol surfactant, based on the total weight of the composition.