Diesel exhaust fluid
A diesel exhaust fluid includes (a) water, (b) urea, (c) a 3-dimensional siloxane component, (d) optionally, a tridecyl alcohol ethoxylate, (e) optionally, an ammonium-containing salt, and (f) optionally, a titanium-containing salt or hydrate.
1. A composition comprising:
(a) water;
(b) urea; and
(c) a 3-dimensional siloxane component with polydimethylsiloxane, wherein the polydimethylsiloxane is from 5 wt % to 12 wt % based on total weight of the 3-dimensional siloxane emulsion.
2. The composition of claim 1 comprising 45-75 wt % water, based on the total weight of the diesel exhaust fluid.
3. The composition of claim 2 comprising 5-40 wt % urea, based on the total weight of the diesel exhaust fluid.
4. The composition of claim 1 further comprising a tridecyl alcohol ethoxylates in an amount from 0.01 to 0.16 wt %, based on the total weight of the diesel exhaust fluid.
5. The composition of claim 1 comprising 0.0001-0.5 wt % of the 3-dimensional siloxane component, based on the total weight of the diesel exhaust fluid.
6. The composition of claim 1 further comprising an ammonium-containing salt in an amount from greater than 0 wt % to 30 wt %, based on the total weight of the diesel exhaust fluid.
7. The composition of claim 1 further comprising a titanium-containing salt or hydrate in an amount from greater than 0 wt % to 0.1 wt %, based on the total weight of the diesel exhaust fluid.
8. The composition of claim 6 , wherein the ammonium containing salt is selected from the group consisting of ammonium carbonate, ammonium chloride, ammonium nitrate, ammonium carbamate, ammonium formate, and combinations thereof.
9. The composition of claim 6 , wherein the ammonium-containing salt is free from metals and transition metals.
10. The composition of claim 1 , wherein the 3-dimensional siloxane component is an emulsion comprising a mixture of polymers containing siloxane units and terminating in trimethyl end caps dispersed in a water-based continuous phase.
11. The composition of claim 10 , wherein the 3-dimensional siloxane component further comprises at least one of the reaction product of dimethyl siloxane and silica, the reaction products of polyethylene-polypropylene glycol monoallyl ether and vinyl group-terminated di-methyl siloxanes, and combinations thereof.
12. The composition of claim 1 , wherein the composition is used in the selective catalytic reduction of exhaust from a diesel engine.