| abstract |
New fluoroelastomers are described, comprising monomeric units deriving from a bis-olefin having general formula:n wherein:n R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , equal or different from each other, are H or alkyls C 1 -C 5 ; Z is an alkylene or cycloalkylene radical C 1 -C 18 , linear or branched, optionally containing oxygen atoms, preferably at least partially fluorinated, or a (per)fluoropolyoxyalkylene radical. n Such 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. |