Patent ID: 8912283
Filing Date: 2014-12-16
Classification: C08F,C08L

Abstract:
1. A sealing material molded by polyol-vulcanization of a fluorine-containing elastomer blend comprising: 5 to 60 wt. % of a high-molecular-weight, fluorine-containing elastomer having a number average molecular weight of 3,000,000 or more; 20 to 80 wt. % of a medium-molecular-weight, fluorine-containing elastomer having a number average molecular weight of 100,000 to 1,000,000; and 10 to 50 wt. % of a low-molecular-weight, fluorine-containing elastomer having a number average molecular weight of 7,000 to 13,000; the number average molecular weight Mn of each fluorine-containing elastomer being measured by liquid chromatography using tetrahydrofuran as a developing solvent at a polymer concentration of 0.5 wt. % at a measurement temperature of 35° C.