Poly(silethynylenedisiloxane) and method for the manufacture...

Details Poly(silethynylenedisiloxane) and method for the manufacture... Poly(silethynylenedisiloxane) and method for the manufacture...

C - Chemistry, Metallurgy

08

G

C08G 77/50 (2006.01) C08G 77/48 (2006.01)

Patent

CA 2088200

Silethynylenedisiloxane polymers are described with repeating units represented by -R1R2SiC~CSiR3R4OSiR5R6O- where R1-R6 independently represent hydrogen atoms, alkyl groups, aryl groups, or alkenyl groups. The polymers are prepared by reacting a disilylacetylene compound represented by the formula X1R1R2SiC~CSiR3R4X1 and a silane compound represented by the formula X22SiR5R6 where X1 and X2 represent H, OH, OM, or a hydrolyzable group. X1 and X2 are not identical and are selected so that they undergo a condensation reaction to form a siloxane bond.

Polymères de siléthynylènedisiloxane avec des unités répétée, représentées par -R1R2SiC~CSiR3R4OSiR5R6O-, où R1et R6 représentent indépendamment des atomes d'hydrogène, des groupes alkyle, aryle ou alcényle. Les polymères sont préparés par réaction d'un disilylacétylène représenté par la formule X1R1R2SiC~CSiR3R4X1 et d'un silane représenté par la formule X22SiR5R6, où X1 et X2 représentent H, OH, OM ou un groupe hydrolysable. X1 et X2 ne sont pas identiques et sont choisis de façon à donner une réaction de condensation pour former un lien siloxane.

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