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US 2010/0145077 A1Published application
Hydrogenation of catmint oil
AssigneeE. I. Du Pont de Nemours and Company
InventorsScott Christopher Jackson, Leo Ernest Manzer, Henry Max Schleinitz, Mark A. Scialdone
Life of this patent
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Abstract
Disclosed are methods for treating catmint oil. The treated catmint oil can be used for the production of hydrogenated catmint oil, which is enriched in the insect repellent, dihydronepetalactone.
Claims20
A process for preparing hydrogenated catmint oil comprising:
- (a) distilling a beginning amount of crude catmint oil to produce (i) a distillate fraction comprising volatile components driven off from the crude catmint oil, wherein the weight of the distillate fraction comprises about 2% to about 20% of the weight of the beginning amount of crude catmint oil, and (ii) a pot fraction;
- (b) contacting the pot fraction produced in step (a) with hydrogen and a hydrogenation catalyst to produce hydrogenated catmint oil;
- and
- (c) optionally, recovering the hydrogenated catmint oil of step (b).
1 more element
A process for preparing hydrogenated catmint oil comprising:
- (a) distilling a beginning amount of crude catmint oil that has at least about 150 ppm of sulfur-containing compounds to produce (i) a distillate fraction that comprises at least about 8 wt % of the amount of sulfur-containing compounds in the beginning amount of crude catmint oil, and (ii) a pot fraction;
- (b) contacting the pot fraction produced in step (a) with hydrogen and a hydrogenation catalyst to produce hydrogenated catmint oil;
- and
- (c) optionally, recovering the hydrogenated catmint oil of step (b).
1 more element
A process for preparing hydrogenated catmint oil comprising:
- (a) contacting crude catmint oil with an oxidizing agent to produce a first treated catmint oil;
- (b) separating the first treated catmint oil from the oxidizing agent to produce a second treated catmint oil;
- (c) contacting the second treated catmint oil with hydrogen and a hydrogenation catalyst to produce hydrogenated catmint oil;
- and
- (d) optionally recovering the hydrogenated catmint oil.
2 more elements
Dependencies are inferred from the claim text.