E.i. Dupont De Nemours and Company

Jeffrey Scott Thompson

Robert DiCosimo

Mark Scott Payne

Daniel P O'Keefe

Anna Panova

Alexander Zak Bradley

Robert Donald Fallon

Walter John Simmons

Thomas Foo

David Lincoln Thorn

Joseph J Zaher

Kyung-Ho Park

F Glenn Gallagher

Oswald Robert Bergmann

Xu Li

George C Fox

Howard M Blank

A process is provided for producing glycolic acid from formaldehyde and hydrogen cyanide. More specifically, heat-treated formaldehyde and hydrogen cyanide are reacted to produce glycolonitrile having low concentrations of impurities. The glycolonitrile is subsequently converted to an aqueous solution of ammonium glycolate using an enzyme catalyst having nitrilase activity derived from72W (ATCC 57746). Glycolic acid is recovered in the form of the acid or salt from the aqueous ammonium glycolate solution using a variety of methods described herein.

Process for producing glycolic acid from formaldehyde and hydrogen cyanide

Methods of depositing a copper film onto the surface of a substrate from a supercritical solution containing copper-containing precursors having monoanionic bidentate and neutral monodentate ligands, which comprise contacting the substrate with the solution; heating the substrate to a temperature between about 60&#xb0; C. and less than 150&#xb0; C.; and forming a copper-containing film on at least a portion of the substrate surface. Also provided are copper-containing precursor compositions used therein.

Method of copper deposition from a supercritical fluid solution containing copper (I) complexes with monoanionic bidentate and neutral monodentate ligands

Various methods are provided for the enzymatic production of glycolic acid from glycolonitrile. These methods include: 1) use of72W nitrilase mutants having improved nitrilase activity for converting glycolonitrile to glycolic acid, and 2) methods to improve catalyst stability and/or productivity. The methods to improve catalyst stability/productivity include use of reaction stabilizers, running the reactions under substantially oxygen free conditions, and controlling the concentration of substrate in the reaction mixture.

Enzymatic production of glycolic acid

The present invention relates to novel 1,3-diimine copper complexes and the use of 1,3-diimine copper complexes for the deposition of copper on substrates or in or on porous solids in an Atomic Layer Deposition process. This invention also provides a process for making amino-imines and novel amino-imines.

Volatile copper(II) complexes for deposition of copper films by atomic layer deposition

A low temperature alkali metal electrolysis process for carrying out the electrolysis in the presence of a co-electrolyte and an alkali metal halide. The co-electrolyte comprises (1) a nitrogen-containing compound and optionally one ore more Group IB halides, Group IIIA halides, Group VIII halides; (2) a Group IIIA halide, a Group VB halide, or combinations of a Group IIIA halide and a Group VB halide; or (3) water. Further provided is an electrolyte comprising an alkali metal halide and a co-electrolyte that comprises (1) a nitrogen-containing compound and optionally one ore more Group IB halides, Group IIIA halides, Group VIII halides or (2) a Group IIIA halide, a Group VB halide, or combinations of a Group IIIA halide and a Group VB halide.

Low temperature alkali metal electrolysis

Growing community of inventors

Wilmington, DE, United States of America

Jeffrey Scott Thompson