Organopolysiloxane composition for surface treatment and...

Details Organopolysiloxane composition for surface treatment and... Organopolysiloxane composition for surface treatment and...

C - Chemistry, Metallurgy

09

D

C09D 183/08 (2006.01) C08J 7/04 (2006.01)

Patent

CA 2243471

An organopolysiloxane composition for surface treatment comprising (A) a reaction product of (1) a silane and/or a siloxane each having a substituted or unsubstituted amino group bonded to the silicon atom via at least one carbon atom and also having an alkoxy group bonded to the silicon atom and (2) a silane and/or a siloxane each having a monovalent hydrocarbon group bonded to the silicon atom, the hydrocarbon group being substituted with an epoxy-containing group, and an alkoxy group bonded to the silicon atom and (B) a specific organopolysiloxane containing an amino group. The composition provides a non-sticky, water-repellent and slippery film on a substrate, especially an EPDM rubber sheet and EPDM molded sponge, with markedly improved adhesion.

Divulgation d'une composition d'organopolysiloxane pour le traitement de surface comprenant : A) un produit de la réaction 1) d'un silane et/ou d'un siloxane contenant chacun un groupement amino substitué ou non substitué lié à l'atome de silicium par l'intermédiaire d'au moins un atome de carbone, et contenant également un groupement alcoxy lié à l'atome de silicium, et 2) d'un silane et/ou d'un siloxane contenant chacun un groupement hydrocarboné monovalent, substitué par un groupement contenant une fonction époxy, lié à l'atome de silicium, et contenant un groupement alcoxy lié à l'atome de silicium; et B) un organopolysiloxane spécifique contenant un groupement amino. Cette composition permet d'obtenir un film non collant, hydrophobe et glissant sur un substrat, spécialement une feuille de caoutchouc EPDM et une éponge moulée EPDM, possédant une adhérence nettement améliorée.

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