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US 2019/0161607 A1Published application
Curable fluoroelastomer composition
OwnerMatteo FANTONI, Liubov CHERNYSHEVA +1inventors
InventorsMatteo FANTONI, Liubov CHERNYSHEVA, Marco AVATANEO
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Abstract
The invention pertains to certain fluoroelastomer compositions comprising an iodine-containing (per)fluoroelastomer of low molecular weight and certain organic peroxides, possessing outstanding cross-linking behaviour at limited temperatures, and yielding resulting final parts exhibiting good mechanical and sealing properties, while avoiding discoloring/degradation phenomena, and enabling easy colour match in a wide range of colours.
Claims20
A fluoroelastomer composition comprising:
- a (per)fluoroelastomer [fluoroelastomer (A)] having a number-averaged molecular weight of 10 000 to 30 000, said (per)fluoroelastomer comprising iodine atoms in an amount of 0.5 to 10.0% wt with respect to the total weight of fluoroelastomer (A);
- at least one organic peroxide (O) selected from the group consisting of di(3-carboxypropionyl) peroxide, 2,5-dimethyl-2,5-di(2-ethylhexanoylperoxy) hexane, dibenzoyl peroxide, t-amylperoxy 2-ethylhexanoate, t-butylperoxy 2-ethylhexanoate, t-butyl peroxyisobutyrate, t-butyl peroxy-(cis-3-carboxy)propenoate, and 1,1-di(t-amylperoxy)cyclohexane, said peroxide (O) being present in the fluoroelastomer composition in an amount of at least 1.8 phr and at most 5.0 phr.
Dependencies are inferred from the claim text.