Perhalogenated polyorganosiloxanes and preparation thereof

C - Chemistry – Metallurgy – 07 – C

Patent

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C07C 69/593 (2006.01) C07C 43/188 (2006.01) C07F 7/08 (2006.01) C08G 77/24 (2006.01) C08G 77/382 (2006.01) C08G 77/385 (2006.01) C11D 3/37 (2006.01)

Patent

CA 2182110

La présente invention concerne des polyorganosiloxanes (POS), linéaires ou cycliques, perfluorés, chimiquement stables et comprenant des greffons perfluorés Gf de formule: ~C m H~Rf dans laquelle m ~ 2 et Rf = reste perfluoré ~(CF2)~F avec la condition selon laquelle dans le cas où m = 2 alors au moins un autre greffon Gf de nature différente est présent. Les POS peuvent répondre, e. g. à la formule suivante Image L'invention a également pour objet un procédé de préparation de ces POS perfluorés. Application : anti-mousse, abaissement de tension de surface, antisalissures, antiadhérence, lubrifiant, oléo et/ou hydrophobisation, revêtements ...

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