Extrudable fluoroelastomer composition
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United States of America Patent
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Issued Date -
Jun 9, 2005
app pub date -
Oct 1, 2004
filing date -
Dec 9, 2003
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
Curable multimodal fluoroelastomer compositions contain a low viscosity fluoroelastomer component that imparts good extrusion performance and a high viscosity component that imparts good physical properties in cured articles. The fluoroelastomer comprises copolymerized units of vinylidene fluoride, hexafluoropropylene and tetrafluoroethylene. At least the low viscosity component also contains copolymerized units of a bromine- or iodine-containing cure site monomer such as 4-bromo-3,3, 4,4-tetrafluorobutene-1 or 4-iodo-3,3,4,4-tetrafluorobutene-1.
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