| 摘要 |
PURPOSE: A room-temperature curable fluoropolyether-based rubber composition is provided to enable effective hardening and to enable excellent heat resistance, low-temperature performance, chemical resistance, solvent resistance and oil resistance. CONSTITUTION: A room temperature curable fluoropolyether base rubber composition comprises: (a) 100 parts by weight of a linear fluoropolyether compound containing at least two ester groups in a molecule and a divalent perfluoroalkyl ether structure in its backbone, and having a number average molecular weight of 3,000 to 100,000, and (b) a siloxane polymer containing at least three amino groups in a molecule in such an amount that a ratio of the total of amino groups in component (b) to the total of ester groups in component (a) is in the range between 1.0 and 5.0 on a molar basis. |
