FLUORINE-CONTAINING ELASTOMER FOR MOLDING FUEL SYSTEM PARTS AND COMPOSITION THEREOF
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United States of America Patent
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Issued Date -
Mar 18, 2010
app pub date -
Oct 2, 2007
filing date -
Oct 25, 2006
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Abandoned
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Abstract
(where R is a fluorohydrocarbon group, a chlorofluorohydrocarbon group, or a hydrocarbon group, each having 1-10 carbon atoms, and n and m each are 1 or 2), and has an intrinsic viscosity of 20-180 ml/g, Mw (weight average molecular weight)/Mn (number average molecular weight) ratio of 2-20, and a molecular weight distribution of monopeak or multipeak type, and a fluorine-containing elastomer composition, which comprises the fluorine-containing elastomer, at least one of a polyol vulcanizing agent and a polyamine vulcanizing agent, an organic peroxide, and a polyfunctional unsaturated compound. The composition is suitable for use in molding fuel system parts to give fluorine-containing elastomer moldings with distinguished moldability, vulcanizate physical properties, chemical resistance, photostability and economy.
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