Environmentally preferred fluids and fluid blends
AssigneeExxon Chemical Patents Inc.
InventorsAlbert Ilya Yezrielev, Richard Henry Schlosberg, George Andrew Knudsen, Thomas Marshall Larson
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Abstract
The invention concerns fluids that have a low reactivity with respect to ozone formation, blends thereof, and the replacement of conventional industrial solvents with said fluid or fluid blends in order to reduce troposheric ozone formation.
Claims36
A process for producing a low ozone forming process fluid consisting essentially of a first fluid selected from the group consisting of:
- toluene, xylenes, methanol, ethanol, n-butanol, n-pentanol, isopropyl alcohol, diacetone alcohol, sec-butanol, ethyl acetate, propyl acetate, butyl acetate, isobutyl isobutyrate, isoamyl isobutyrate, propylene glycol methyl ether acetate, methyl ethyl ketone, methyl isobutyl ketone, C5-C10 linear ketones, cyclic ketones, methyl t-butyl ether and mineral spirits, wherein the improvement comprises adding a second fluid selected from dimethyl carbonate, methyl pivalate, or a mixture thereof to said first fluid, thereby forming a process fluid which exhibits an ozone forming potential (OFP) which is at least 10% less than the OFP of said first fluid.
In a non-combustion process utilizing a process fluid comprising a first fluid wherein at least some of said first fluid evaporates into the atmosphere, the improvement comprising adding methyl pivalate to said first fluid, thereby decreasing ozone formation from atmospheric photochemical reactions.
Dependencies are inferred from the claim text.