(Per)fluoroelastomeric compositions
AssigneeSolvay Solexis S.p.A.
InventorsMilena Stanga, Giovanni Comino, Stefano Arrigoni, Margherita Albano
Life of this patent
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Abstract
A (per)fluoroelastomeric composition curable by peroxidic way comprising for 100 phr of (per)fluoroelastomer: as filler, from 2 to 70 phr of carbon black having a surface area between 25 and 35 m2/g; as crosslinking agent, from 0.5 to 10 phr of a bis-olefin having general formula: wherein: R1, R2, R3, R4, R5, R6, equal to or different from each other, are H or C1-C5 alkyls; Z is selected between a linear or branched C1-C18 alkylene or cycloalkylene radical, optionally containing oxygen atoms, preferably at least partially fluorinated, or a (per)fluoropolyoxyalkylene radical.
Claims25
A method of making manufactured articles having resistance to vapour at high temperatures, of fluoroelastomeric or perfluoroelastomeric compositions curable by peroxidic way, comprising combining for 100 phr of fluoroelastomer or perfluoroelastomer:
- as filler, from 2 to 70 phr of carbon black having surface area CTAB (ASTM D 3765) between 25 and 35 m2/g;
- as crosslinking agent, from 0.5 to 10 phr of a bis-olefin having general formula;
- wherein:
- R1, R2, R3, R4, R5, R6, equal to or different from each other, are H or C1-C5 alkyls;
- Z is selected between a C1-C18 linear or branched alkylene or cycloalkylene radical, optionally containing oxygen atoms, or a fluoropolyoxyalkylene or perfluoropolyoxyalkylene radical.
Dependencies are inferred from the claim text.