Peroxide curable fluoroelastomers, particularly suitable for...

Details Peroxide curable fluoroelastomers, particularly suitable for... Peroxide curable fluoroelastomers, particularly suitable for...

C - Chemistry, Metallurgy

08

F

C08F 14/18 (2006.01) C07C 17/25 (2006.01) C07C 17/275 (2006.01) C08F 214/18 (2006.01)

Patent

CA 2149569

New fluoroelastomers are described, having iodine atoms in terminal position and monomeric units in the chain deriving from an iodinated olefin of formula: CHR=CH-Z-CH2CHR-I (I) wherein: R is -H or -CH3; Z is a (per)fluoroalkylene radical C1-C18, linear or branched, optionally containing one or more ether oxygen atoms, or a (per)fluoropolyoxyalkylene radical. These products, upon peroxide curing, require extremely short post-curing treatments (around 30-60 minutes at 180°- 230°C) and are characterized by compression set values lower than 25% (measured on O-rings at 200°C for 70 hours according to ASTM Standard D395 Method B).

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