Dow Silicones Corporation

Dow Global Technolgoies LLC

Rohm and Haas Company

Dow Corning Corporation

University of Illinois

Matthew Jeletic

Donald Eldred

Fanwen Zeng

Ralph Craig Even

Nanguo Liu

Kimmai Thi Nguyen

David Laitar

Jodi M Mecca

Inna Shulman

John Roberts

Xiaodong Lu

Tian Lan

Ryan Christopher Thomas

Isabelle Van Reeth

Helene Dihang

Marc Eeman

Hilda G Buss

Nick Evan Shephard

Ming-Shin Tzou

Michael Wolfgang Backer

Muhunthan Sathiosatham

Kenneth Edward Zimmerman

Bryan L McCulloch

Michaeleen L Pacholski

Zachary Wenzlick

Matthew Olsen

Eric E Joffre

Jason S Fisk

Matthew Carter

Thomas B Rauchfuss

Tzu-Chi Kuo

Patrick Beyer

Fang Zhang

Michael Telgenhoff

Ryan Baumgartner

Andre Yvon-Bessette

Husain Kagalwala

Cameron Kadleck

Tanvi S Ratani

Yu Zhang

Richard P Woodworth

Arash R Nowbahar

Bryan L Mcculloch

Donald V Eldred

Cesare Benedetti

Roxanne Renee Haller

Michael Rosenzweig

A method for preparing a silyl ester compound is disclosed. The silyl ester compound may be a silane monomer or siloxane oligomer. The silyl ester compound may be hydro silylated with a polyorganohydrogensiloxane to form a silyl ester protected product, which may then be de-protected with water to prepare a carboxy-functional polyorganosiloxane.

Methods for the preparation and use of silyl ester compounds

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 multifunctional organosilicon compound is provided which has the general formula XSi([OSiR]p-0-SiRY)a(R)— ln the formula, X is selected from H and ethylenically un saturated moieties; each Y independently comprises a functional moiety selected from alkoxysilyl moieties, acryloxy moieties, and epoxide moieties; each R is an independently selected hydrocarbyl group; each R1 is an independently selected hydrocarbyl group; subscript a is 1, 2, or 3; and each subscript b is independently 0, 1, or 2. A method of preparing the multifunctional organosilicon compound is also provided. The method comprises reacting (A) an organosilanol compound and (B) a silane compound having at least two hydrolysable groups. A functionalized siloxane compound prepared from the multifunctional organosilicon compound, a method of preparing the functionalized siloxane compound, and an adhesive comprising the functionalized siloxane compound are also provided.

Multifunctional organosilicon compound and related methods, compounds, and compositions

A branched organosilicon compound ('compound') having the general formula (R1)Si—X—Y is provided. In the formula: each Ris selected from R and —OSi(R)3, with the proviso that at least one Ris —OSi(R)3; each R is independently a substituted or unsubstituted hydrocarbyl group; each Ris selected from R, —OSi(R)3, and —[OSiR]mOSiR; each Ris selected from R, —OSi(R)3, and —[OSiR]mOSiR; each Ris selected from R and —[OSiR]mOSiR; with the proviso that at least one of R, Rand Ris —[OSiR]mOSiR; 0<m≤100; X is a divalent linking group; and Y is selected from one of formulas (1)-(111) described herein. Also provided is a method of preparing the compound via hydrosilylation reaction, a copolymer comprising the reaction product of the compound and a second compound reactive with the compound, a method of forming the copolymer, and a composition including at least one of the compound and the copolymer.

Branched organosilicon compound, method of preparing same, and copolymer formed therewith

A method of preparing an organosilanol compound is disclosed. The method comprises reacting (A) an initial organosilicon compound and (B) water in the presence of (C) a catalyst. The catalyst (C) is selected from: (C1) [(CHirCl][(p-cymene)RuCl]; and (C3) Pd/C. The initial organosilicon compound (A) has the general formula HO—Si(R)—[Si(R)O]—OSi(R)—Y and the organosilanol compound has the general formula HO—Si(R)2-[Si(R)O]—OSi(R)—Y, where each R is an independently selected hydrocarbyl group; Y comprises a functional moiety selected from alkoxysilyl moieties, epoxide moieties, and acryloxy moieties, with the proviso that Y is other than the acryloxy moieties when the catalyst (C) is (C3) Pd/C; and subscript a is 0 or 1. The organosilanol compound prepared by the method is also provided.

Method of preparing functional organosilanol compounds

A personal care formulation is provided comprising: multistage polymer, comprising: acrylate rich stage comprising: (a) structural units of monoethylenically unsaturated non-ionic, acrylate rich stage monomer selected from Calkyl (meth)acrylates and mixtures thereof; and (b) carbosiloxane rich stage, comprising: structural units of carbosiloxane monomer of formula (I), wherein a is 0 to 3; wherein d is 0 or 1; wherein Ris selected from hydrogen, Calkyl group and aryl group; wherein Ris selected from hydrogen and Calkyl group; wherein Ris —O—Si(CH)—O—Si(CH)group; wherein Y is selected from formula (II), (III) and (IV); wherein Rand Rare selected from hydrogen and methyl group; wherein Rand Rare a Calkylene group; wherein Ris Calkyl group; wherein b is 0 to 4 and wherein c is 0 or 1.

Personal care formulation

A polymer blend is provided comprising: (A) multistage polymer, comprising: acrylate rich stage comprising: structural units of monoethylenically unsaturated non-ionic, acrylate rich stage monomer selected from Calkyl (meth)acrylates and mixtures thereof; and carbosiloxane rich stage, comprising: structural units of carbosiloxane monomer of formula (I); and (B) silicone-grafted vinyl copolymer, wherein the silicone-grafted vinyl copolymer, comprises: structural units of a vinyl (B) monomer; and structural units of a carbosiloxane dendrimer of formula (V). Also provided are personal care formulations comprising the polymer blend.

Polymer blend

A complex prepared by combining a metal compound and an N-heterocyclic carbene has catalytic activity for condensation reaction of polyorganosiloxane compositions. The composition includes the complex, a silanol functional compound having an average per molecule of one or more silicon bonded hydroxy moieties.

Polyorganosiloxane compositions with metal based N-heterocyclic carbene condensation reaction catalysts and methods for the preparation thereof

A method can selectively prepare a compound of formula (IV), where each Rand each Rare independently selected from an alkyl group, an aryl group, a halogenated alkyl group, or a halogenated aryl group of 6 to 10 carbon atoms each Ris an alkane-diyl group, and each Ris hydrogen or an alkyl group. The method involves hydrosilylation of an organohydrogensiloxane oligomer with a carboxylic acid alkenyl ester using an iridium complex catalyst. 

Method and composition for hydrosilylation of carboxylic acid alkenyl esters and hydrogen terminated organosiloxane oligomers with an iridium complex catalyst

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Midland, MI, United States of America

Matthew Jeletic