| abstract |
New fluoroelastomers are described, comprising monomeric units deriving from a bis-olefin having general formula:n n wherein: nR₁, R₂, R₃, R₄, R₅, R₆, equal or different from each other, are H or alkyls C₁-C₅; Z is an alkylene or cycloalkylene radical C₁-C₁₈, linear or branched, optionally containing oxygen atoms, preferably at least partially fluorinated, or a (per)fluoropolyoxyalkylene radical. nSuch products are endowed with improved processability, especially during calendering of the vulcanization mixture, along with superior mechanical and workability properties during extrusion and injection molding, with a very good mold release. |