Microbicidal composition based on formaldehyde donor compounds and antioxidants
Microbicidal composition for product preservation, including a microbicidal composition which comprises a) at least one formaldehyde donor compound and b) at least one antioxidant chosen from gallic esters, phenol derivatives, L-ascorbic acid, and salts and derivatives thereof, and tocopherols and derivatives thereof, and to the use thereof for the preservation of technical products, for example fuels and lubricants.
1. A microbicidal composition comprising:
a) N,N′-methylenebis(5-methyloxazolidine); and
b) 2,6-di-tert-butyl-p-cresol in an amount of about 0.02% to about 0.10%.
2. The composition of claim 1 , further comprising an O-formal.
3. The composition of claim 1 , further comprising at least one member selected from the group consisting of:
a) N,N′,N″-tris(hydroxyethyl)hexahydrotriazine; and
b) N, N′,N″-tris(β-hydroxypropyl)hexahydrotriazine.
4. The composition of claim 1 , further comprising a phenol derivative selected from the group consisting of:
a) 2-tert-butyl-4-methylphenol;
b) 2-tert-butyl-5-methylphenol; and
c) 3-tert-butyl-4-hydroxyanisole.
5. The composition of claim 1 , wherein the weight ratio of said N,N′-methylenebis(5-methyloxazolidine) to said 2,6-di-tert-butyl-p-cresol is in the range from about 99.9999:0.0001 to about 90:10.
6. The composition of claim 5 , wherein said range is about 99.999:0.001 to about 99:1.
7. The composition of claim 6 , wherein said range is about 99.99:0.01 to about 99.5:0.5.
8. The composition of claim 1 , wherein said composition further comprises:
a) at least one solvent or solubility promoter; and
b) an additive, wherein said additive comprises at least one member selected from the group consisting of:
1) corrosion inhibitors;
2) alkalizing agents;
3) dyes;
4) perfumes;
5) viscosity-modifying agents;
6) foam inhibitors;
7) emulsifiers;
8) stabilizers; and
9) a biocide.
9. The composition of claim 1 , wherein said composition comprises said N,N′-methylenebis(5-methyloxazolidine) in the amount of about 0.005% to about 99.9999% of total composition weight.
10. The composition of claim 9 , wherein said amount is about 1% to about 99.999% of total composition weight.
11. The composition of claim 10 , wherein said amount is about 5% to about 99.99% of total composition weight.
12. The composition of claim 8 , wherein said composition comprises said solvent or solubility promoter in the amount of about 0% to about 99.995% of total composition weight.
13. The composition of claim 12 , wherein said amount is about 0% to about 10% of total composition weight.
14. The composition of claim 13 , wherein said amount is about 0% to about 1% of total composition weight.
15. The composition of claim 8 , wherein said composition comprises said additive in the amount of about 0% to about 50% of total composition weight.
16. The composition of claim 15 , wherein said amount is about 0% to about 30% of total composition weight.
17. The composition of claim 16 , wherein said amount is about 0% to about 20% of total composition weight.
18. The composition of claim 12 , wherein said solvent comprises water in the amount of less than about 10% of total composition weight.
19. The composition of claim 18 , wherein said amount is less than about 5% of total composition weight.
20. The composition of claim 19 , wherein said amount is less than about 1%.
21. The composition of claim 20 , wherein said amount is about 0%.
22. The composition of claim 18 , wherein said composition comprises N,N′-methylenebis(5-methyloxazolidine) in the amount of about 90% to about 99.9999% of total composition weight.
23. The composition of claim 22 , wherein said amount is about 99% to about 99.999% of total composition weight.
24. The composition of claim 23 , wherein said amount is about 99.90% to about 99.995% of total composition weight.
25. The composition of claim 18 , wherein said composition comprises N,N′-methylenebis(5-methyloxazolidine) in the amount of about 90% to about 99.9999% of total composition weight.
26. The composition of claim 25 , wherein said amount is about 99% to about 99.999% of total composition weight.
27. The composition of claim 26 , wherein said amount is about 99.90% to about 99.995% of total composition weight.