CURABLE FLUOROELASTOMER COMPOSITION

PROBLEM TO BE SOLVED: To obtain a curable fluoroelastomer composition having improved sealing properties, that is, improved compression set on O-ring, and improved dynamic properties shown as improved combination of stress and elongation at break. SOLUTION: The curable fluoroelastomer composition is...

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Bibliographic Details
Main Authors ALBANO MARGHERITA, STACCIONE ANNA
Format Patent
LanguageEnglish
Published 08.07.2010
Subjects
CHEMISTRY
COMPOSITIONS BASED THEREON
COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
METALLURGY
ORGANIC MACROMOLECULAR COMPOUNDS
THEIR PREPARATION OR CHEMICAL WORKING-UP
USE OF INORGANIC OR NON-MACROMOLECULAR ORGANIC SUBSTANCES ASCOMPOUNDING INGREDIENTS
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Summary:PROBLEM TO BE SOLVED: To obtain a curable fluoroelastomer composition having improved sealing properties, that is, improved compression set on O-ring, and improved dynamic properties shown as improved combination of stress and elongation at break. SOLUTION: The curable fluoroelastomer composition is a vinylidenfluoride (VDF)-based fluoroelastomer composition curable by ionic route comprising: (a) 100 pts.wt of a VDF-based fluoroelastomer containing a polar end group in an amount lower than 3 mol% to the total amount of end groups; (b) 0.05-5 phr of a reaction accelerating agent; (c) 0.5-15 phr of a hardening agent; (d) 1-40 phr of one or more bivalent metal oxides as inorganic acid acceptors; (e) 0-2.5 phr, preferably 0-1.5 phr, of one or more hydroxides of bivalent metals or of weak acid metal salts as basic compounds; and (f) 0-80 phr of a reinforcing filler. COPYRIGHT: (C)2010,JPO&INPIT
Bibliography:Application Number: JP20100087005