Momentive Performance Materials Gmbh

Princeton University

Lubrizol Advanced Materials, Inc.

Wacker Chemicalcorporation

Wacker Chemie Ag

Aroop Kumar Roy

Julie Boyer

Kenrick M Lewis

Paul J Chirik

Johannes G P Delis

Keith James Weller

Tianning Diao

Susan Adams Nye

David Jenkins

Renyuan Yu

Crisita Carmen Hojilla Atienza

Eric Raymond Pohl

Krishnan Tamareselvy

Michael Coffey

Deborah S Filla

Alok Sarkar

Sebastian Knoer

Vivek Khare

Amitabha Mitra

Denise W Rafferty

Abirami Srikanth

Andrea Trotto

Thomas A Barker

Joseph Zellia

Srinivas Komati

Juergen Koller

Michael L Coffey

Christopher Schuster

Regina Klump

Carol Kyer

Cristia Carmen Hojilla Atienza

Indraneel Kundu

Sebastian Knör

Johannes GP Delis

Julie L Boyer

Alok Sakar

Deborah Filla

A process for producing a silylated product comprises reacting a mixture comprising (a) an unsaturated compound containing at least one unsaturated functional group, (b) a silyl hydride containing at least one silylhydride functional group, and (c) a catalyst, optionally in the presence of a solvent, to produce a dehydrogenative silylated product, a hydrosilylated product, or a combination of a dehydrogenative silylated product and a hydrosilylated product, wherein the catalyst is chosen from a pyridine diimine cobalt dicarboxylate complex or a cobalt carboxylate compound, and the process is conducted without pre-activating the catalyst via a reducing agent and/or without an initiator or promoter compound. The present catalysts have been found to be active in the presence of the silyl hydride employed in the silylation reaction.

Dehydrogenative silylation, hydrosilylation and crosslinking using pyridinediimine cobalt carboxylate catalysts

A process for cross-linking siloxane and organic polymers comprising reacting (a) a silyl hydride with (b) an unsaturated polymeric compound in the presence of (d) a platinum diene compound with a chelating dianionic ligand.

Platinum (II) diene complexes for controlled siloxane crosslinking

A process and composition for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the proviso that when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane. The process and composition optionally comprise an inhibitor (e). The process and composition may be employed to form a variety of hydrosilylation products.

Platinum catalyzed hydrosilylation reactions utilizing cyclodiene additives

Provided is a composition and process for producing a crosslinked product. The composition comprises a mixture constituting (a) an alkenyl silicone, (b) a hydrogen siloxane, (c) a cure inhibitor and (d) a hydrosilylation catalyst, optionally in the presence of a solvent, and (e) sulfur compounds in order to produce the crosslinked product, and the process comprises reacting such a composition to form a crosslinked product.

Siloxane crosslinking processes employing sulfur compounds and platinum catalysts

A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum based hydrosilylation catalyst comprising a platinum-diene complex with chelating anions. The use of the present catalysts in the process provides silylated products in good yields and allows for using lower platinum loadings than conventional catalysts, reduced cycle times, and may reduce yellowing in the product.

Platinum (II) diene complexes with chelating dianionic ligands and their use in hydrosilylation reactions

A heterogeneous catalyst comprising a metal-containing polymer matrix covalently bonded to a support material and a method of making and using such catalysts. The metal-containing polymer matrix comprises metal nano-particles encapsulated in a polymer matrix, e.g., a siloxane. In one aspect, the metal-containing polymer matrix can be bonded to the support material via a hydrophobic group attached to the support material. The catalyst can be recovered after being used in a metal catalyzed reaction and exhibit excellent catalytic activity upon reuse in subsequent reactions.

High activity catalyst for hydrosilylation reactions and methods of making the same

The present invention is directed to a selective and efficient process for the hydrosilylation of compounds containing terminally unsaturated 1,3-dienes using iron-based hydrosilylation catalysts. The resulting 1,2-addition products are useful as precursors for various silicone materials or silane- or silyl/silicone-functionalized polyolefins.

Selective 1,2-hydrosilylation of terminally unsaturated 1,3-dienes using iron catalysts

Organopolysiloxane gels produced by crosslinking an unsaturated organopolysiloxane resin with a crosslinking agent in the presence of a diluent have excellent sensory properties such as properties desirable in a variety of cosmetics products.

Organopolysiloxane gels

Disclosed herein are cobalt complexes containing terdentate pyridine di-imine ligands and their use as efficient, reusable, and selective dehydrogenative silylation, crosslinking, and tandem dehydrogenative silylation-hydrogenation catalysts.

Reusable homogeneous cobalt pyridine diimine catalysts for dehydrogenative silylation and tandem dehydrogenative-silylation-hydrogenation

The invention relates generally to transition metal salts, more specifically to iron, nickel, cobalt, manganese and ruthenium salts, activated with silylhydrides, and their use as efficient hydrosilylation catalysts.

Activation of metal salts with silylhydrides and their use in hydrosilylation reactions

A process for the hydrosilylation of an unsaturated compound comprising reacting (a) a silyl hydride with (b) an unsaturated compound in the presence of (c) a platinum compound and (d) a cyclodiene, with the provisos that (i) when the unsaturated compound is a terminal alkyne, the silyl hydride is other than a halosilane, and (ii) when the platinum compound is a Pt(II)-based compound, the ratio of total moles of cyclodiene to moles of platinum is less than 3:1.

Disclosed herein are cobalt complexes containing pyridine di-imine ligands and chelating alkenyl-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.

Cobalt catalysts and their use for hydrosilylation and dehydrogenative silylation

Disclosed herein are cobalt complexes containing terpyridine ligands and chelating alkene-modified silyl ligands, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.

Disclosed herein are cobalt terpyridine complexes containing a single ligand coordinated to the cobalt, and their use as hydrosilylation and/or dehydrogenative silylation and crosslinking catalysts. The cobalt complexes also exhibit adequate air stability for handling and manipulation.

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Mechanicville, NY, United States of America

Aroop Kumar Roy