E.i. Dupont De Nemours and Company

Alliance for Sustainable Energy, LLC

Tate & Lyle Ingredients Americas LLC

A E Staley Manufacturing Company

Mayis Seapan

Tyler T Ames

George Francis Diffendall

Leo Ernest Manzer

Scott Christopher Jackson

Mark Andrew Scialdone

Keith Ward Hutchenson

F Glenn Gallagher

Robert E Trotter

Hari Babu Sunkara

Albert W Alsop

William F Lehnhardt

James M Gaddy

John Charles Fisher

Luis Alberto Chu

Jefferson C Lievense

Michael L Luyben

Gregory M Wenndt

Eugene K Yu

Bryan C Dravis

Patrick Fitzgibbon

Susan Marie Hennessey

Melvin P Tucker, Iii

Richard T Elander

Francis G Gallagher

Dennis N Adkesson

James M Disney

Dennis M Adkesson

James S Disney

Keith W Hutchenson

Melvin P Tucker Iii

Mark A Scialdone

Dennis Michael Adkesson

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, and from which formulated products may be prepared.

Solvent addition and removal in the hydrogenation of catmint oil

This invention provides a process for producing dihydronepetalactone using mixtures comprising both trans-cis nepetalactone and cis-trans nepetalactone. A reaction mixture comprising trans-cis nepetalactone and cis-trans nepetalactone is first contacted with hydrogen in the presence of at least one hydrogenation catalyst under conditions that optimise the preferential conversion of trans-cis nepetalactone to dihydronepetalactone. Cis-trans nepetalactone is subsequently converted to dihydronepetalactone by contact with hydrogen in the presence of at least one hydrogenation catalyst.

Production of dihydronepetalactone

A process for the hydrogenation of a mixture of caryophyllenes by contact with hydrogen in the presence of a supported catalyst. The resulting products are useful for the application to skin.

Hydrogenation of caryophellene

A process for purifying 1,3-propanediol from the fermentation broth of a culturedthat has been bioengineered to synthesize 1,3-propanediol from sugar is provided. The basic process entails filtration, ion exchange and distillation of the fermentation broth product stream, preferably including chemical reduction of the product during the distillation procedure. Also provided are highly purified compositions of 1,3-propanediol.

Purification of biologically-produced 1,3-propanediol

Processes for saccharification of pretreated biomass to obtain high concentrations of fermentable sugars are provided. Specifically, a process was developed that uses a fed batch approach with particle size reduction to provide a high dry weight of biomass content enzymatic saccharification reaction, which produces a high sugars concentration hydrolysate, using a low cost reactor system.

Process for concentrated biomass saccharification

A process comprising contacting PO3G having color with hydrogen in the presence of a hydrogenation catalyst, wherein the PO3G, after hydrogenation, has a APHA color of less than about 50.

Hydrogenation of polytrimethylene ether glycol

The invention discloses a hydrogenation process for removing impurities and controlling acid for use in downstream processing of biochemically-derived 1,3-propanediol. Preferably, the biochemically-derived 1,3-propanediol, before the contacting, has an initial color and, after the contracting, has a color that is lower than the initial color.

Purification of biochemically derived 1,3-propanediol

Hydrogenation of biochemical derived 1,3 -propanediol

Disclosed is a process comprising contacting chemical 1,3-propanediol with hydrogen in the presence of a hydrogenation catalyst. Preferably, the chemical 1,3-propanediol, before the contacting has an initial color and, after the contacting, has a color that is lower than the initial color.

Hydrogenation of chemically derived 1,3-propanediol

Purification of chemical 1,3-propanediol

Growing community of inventors

Landenberg, PA, United States of America

Mayis Seapan