Addition of silicone gum rubber to phosphonitrilic...

Details Addition of silicone gum rubber to phosphonitrilic... Addition of silicone gum rubber to phosphonitrilic...

C - Chemistry, Metallurgy

08

L

400/5343

C08L 85/02 (2006.01)

Patent

CA 1072239

ABSTRACT OF THE DISCLOSURE A phosphonitrilic fluoroelastomer composition is disclosed which possesses enhanced processibility, low temperature flexibility and slightly increased volume swell in petroleum based hydraulic fluids consisting essentially of: (1) a fluoroelastomer consisting of alternating P and N atoms and the substituents attached to the P atoms are principally fluoroalkoxy groups and include at least some unsaturated groups; and (2) between about 1 and 20 parts of silicone gum rubber per 100 parts of fluoroelastomer, blended therewith. These compositions have improved properties for the manufacture of for example hoses and o-ring seals particularly for low temperature environments. .

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