Dow Silicones Corporation

Dow Global Technolgoies LLC

Dow Toray Co., Ltd.

Michael Telgenhoff

David D Devore

Nanguo Liu

Ruth Figueroa

Tatsuo Souda

Michael Salvatore Ferritto

Brian David Rekken

Zhenbin Niu

Matthew Jeletic

Tsunehito Sugiura

David Rich

Jason S Fisk

Eric E Joffre

Gang Lu

Donald Eldred

Mrunmayi Kumbhalkar

Joseph C Neuman

Erich Molitor

Michael Wang

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 branched organosilicon compound ('compound') is provided having the general formula: (R)Si—X—NRR, where X is a divalent linking group; Ris H or R; Rcomprises an acryloxy moiety; each Ris selected from R and —OSi(R), with the proviso that at least one Ris —OSi(R); where each Ris selected from R, —OSi(R), and —[OSiR]mOSiR; where each Ris selected from R, —OSi(R), and —[OSiR]OSiR; and where each Ris selected from R and —[OSiR]OSiR, with the proviso that at least one of R, Rand Ris —[OSiR]OSiR; 0≤m≤100; and each R is a substituted or unsubstituted hydrocarbyl group. Also provided is a method of preparing the compound, 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 for preparing functionalized polyorganosiloxanes is disclosed. The method includes 1) combining starting materials including A) a boron-containing Lewis acid catalyst, and B) an organosilicon compound having an average, per molecule of at least 1 silicon bonded groups of the formula —OR; wherein each Ris an independently selected monovalent hydrocarbon group of 1 to 6 carbon atoms, thereby forming a catalyzed mixture; and thereafter 2) adding the catalyzed mixture into a starting material including C) an organohydrogensiloxane having at least 1 silicon bonded hydrogen atom per molecule, thereby preparing a product comprising the functionalized polyorganosiloxane and a by-product comprising HR.

Method for preparing a functionalized polyorganosiloxane

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Midland, MI, United States of America

Michael Telgenhoff