| 摘要 |
PROBLEM TO BE SOLVED: To provide an acrylic elastomer and an acrylic elastomer composition using the same, which can provide excellent electrical insulation under high temperature and moisture and has excellent long-term reliability for use in electronic material.SOLUTION: The acrylic elastomer is obtained by copolymerizing the acrylic monomer including, as the structural unit, at least formula (I) and any two kinds of specific structures, as the essential component of the acrylic elastomer not containing acrylonitrile, where X represents a C5-22 alicyclic hydrocarbon substituent, and R1 represents H or a methyl group. |
