University of Illinois

Dow Silicones Corporation

Exxonmobil Research and Engineering Company

Flexsys America L.p.

Thomas B Rauchfuss

Aswini K Dash

Michael Siskin

Roby Bearden, Jr

Ronald Damian Myers

Frederick Ignatz-Hoover

Otto W Maender

Matthew Jeletic

Todsapon Thananatthanachon

Ryan Gilbert Watson

Wan-Yi Chu

Husain Kagalwala

Yu Zhang

Debashis Basu

Ryan J Gilbert-Wilson

Roby Bearden

A catalyst for hydrosilylation is disclosed. The catalyst comprises a complex having a certain formula. A redox-switchable catalyst system for preparing the catalyst is also disclosed. The redox-switchable catalyst system comprises a redox-switchable catalyst and a reducing compound. The reducing compound reduces a formal oxidation state of the redox-switchable catalyst to give the catalyst, where the former is generally inactive in catalyzing hydrosilylation and the latter is catalytically active. A composition comprising the catalyst and/or the redox-switchable catalyst system, and a hydrosilylation reaction product, are also disclosed.

Catalyst, redox-switchable catalyst system, and related methods involving hydrosilylation

A catalyst having a specific structure and a method of preparing the catalyst is disclosed. A composition is also disclosed, which comprises: (A) an unsaturated compound including at least one aliphatically unsaturated group per molecule, subject to at least one of the following two provisos: (1) the (A) unsaturated compound also includes at least one silicon-bonded hydrogen atom per molecule; and/or (2) the composition further comprises (B) a silicon hydride compound including at least one silicon-bonded hydrogen atom per molecule. The composition further comprises (C) the catalyst. A method of preparing a hydrosilylation reaction product and a dehydrogenative silylation reaction product are also disclosed.

Catalyst and related methods involving hydrosilylation and dehydrogenative silylation

A ligand component is formed according to formula (1):RP&#x2014;X&#x2014;N&#x2550;C(R)&#x2014;Y, wherein Ris Ph or Cyc or a C-Csubstituted or unsubstituted ailkyl group; each Ph is a substituted or unsubstituted phenyl group; each Cyc is a substituted or unsubstituted cycloalkyl group; X is an unsubstituted arylene or a C-Csubstituted or unsubstituted alkylene; Ris H, methyl or Ph; and Y N is pyridyl, 6-phenylpyridyl or 6-methylpyridyl; with the proviso that when X is a Csubstituted or unsubstituted alkylene and Y is pyridyl, Ris methyl or Ph. A reaction product including the ligand component and a metal precursor is prepared by combining the ligand component with the metal precursor. An activated reaction product is formed by activating the reaction product as a hydrosilylation catalyst.

Ligand components, associated reaction products, activated reaction products, hydrosilylation catalysts and hydrosilylation curable compositions including the ligand components, and associated methods for preparing same

The present disclosure provides methods to make liquid fuels from renewable, carbon neutral precursors. Specifically, methods to prepare 2,5-dimethylfuran from a source of fructose or other carbohydrates using a one-pot synthesis are provided. In some embodiments, the disclosed methods avoid the isolation of intermediates, and employ 'green' reagents like formic acid and acetic acid.

Efficient method for preparing 2,5-dimethylfuran

The present invention relates to a process for removing sulfur from sulfur-containing hydrocarbon streams utilizing a multi-ring aromatic hydrocarbon complex containing an alkali metal ion. Preferably, the sulfur-containing hydrocarbon stream is comprised of high molecular weight hydrocarbons, such as a low API gravity, high viscosity crude, tar sands bitumen, an oil derived from shale, or heavy refinery intermediate stocks such as atmospheric resids or vacuum resids which are typically difficult to desulfurize and contain relatively high amounts of sulfur. However, intermediate refinery streams and refinery product streams may also be treated by the process of the current invention to achieve very low sulfur concentrations to meet environmental specification for fuels sulfur content.

Desulfurization of petroleum streams utilizing a multi-ring aromatic alkali metal complex

Rubber compositions which contain a complex of zinc hexasulfide with an amine, together with a vulcanization accelerator exhibit favorable vulcanization behavior, and their vulcanizates show improved properties.

Rubber compositions containing zinc hexasulfide complexes

Growing community of inventors

Urbana, IL, United States of America

Thomas B Rauchfuss