Momentive Performance Materials Gmbh

Crompton Gmbh

Rodica Himmeldirk

Eric Raymond Pohl

Richard W Cruse

Antonio Chaves

Leda N Gonzalez

Melinda Jackson

Larry Allen Divens

R Shawn Childress

Mark D Westmeyer

Melinda B Hale

Michelle A Filipkowski

Larry Allen Divins

Diol derived blocked mercaptofunctional silane compositions in which the silanes comprise cyclic and bridged alkoxy groups derived from hydrocarbon-based diols and processes for their preparation are provided. Also provided are rubber compositions comprising the cyclic diol-derived blocked mercaptofunctional silanes, processes for their preparation and articles of manufacture comprising the rubber compositions, in particular, automotive tires and components thereof.

Cyclic diol-derived blocked mercaptofunctional silane compositions

A process of preparing compounds containing silicon-carbon bonds by the hydrosilation of a hydridoalkoxysilyl reactant with an olefinic reactant comprises operating the process in the presence of a platinum catalyst and a reaction promoter comprising a weakly nucleophilic amine of the formula NZ Z Z wherein Z is an aryl, alkaryl, or aralkyl group of C to C carbon atoms, or an organosilyl substituent, SiR , wherein R is an alkyl of C to C or an aryl of C to C , Z is hydrogen, alkyl of C to C , an aryl, alkaryl, or aralkyl group of C to C carbon atoms or SiR , wherein R is as previously defined; Z is the same as Z or Z , and, optionally, two Of Z , Z and Z taken together with the nitrogen atom form an aromatic heterocyclic ring.

Promoted hydrosilation reactions

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Vincent, OH, United States of America

Rodica Himmeldirk