Curable compositions of fluoroelastomers containing bromine

Details Curable compositions of fluoroelastomers containing bromine Curable compositions of fluoroelastomers containing bromine

C - Chemistry, Metallurgy

08

L

C08L 27/12 (2006.01) C08K 5/14 (2006.01) C08K 5/54 (2006.01) C08K 5/56 (2006.01) C08K 5/57 (2006.01) C08L 27/10 (2006.01)

Patent

CA 2182328

Peroxide-curable fluoroelastomeric compositions, consisting of a fluoroelastomer containing bromine, an organic peroxide and a metal-organic hydride having the formula: Image (I) wherein M is selected from Sn, Si, Ge, Pb; x is an integer from 1 to 3; y, z are zero or integers from 1 to 3, with the proviso y + z = 4 - x; w is an integer from 1 to 3; the R groups, equal to or different from each other, are selected from: alkyls C1-C4, aryls C6-C12, arylalkyls and alkylaryls C7- C14, optionally containing nitrile and/or hydroxyl groups. The hydride addition allows to increase the curing rate, obtaining at the same time a high crosslinking degree.

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