Patent ID: 7981963

Claim:
An insulation material having a Young's modulus of 1 GPa or less in a temperature range of 10 to 30° C., comprising: (A) a reactive elastomer that reacts with epoxy resin or an epoxy resin curing agent and comprises a polyamide elastomer containing a phenolic hydroxyl group as represented by one of the following formulae that does not contain a cyanate group in the structure thereof, wherein R 1 is a bivalent aromatic compound with a carbon number of from 6 to 12 having a phenolic hydroxyl group, R 2 is a bivalent aromatic compound having a carbon number of from 6 to 12 that does not contain a phenolic hydroxyl group, or a bivalent aromatic compound having a carbon number of from 1 to 10, and R 3 is a bivalent aromatic compound having a carbon number of from 6 to 12, or a bivalent aromatic compound having a carbon number of from 1 to 10, x and y are each independently an integer from 3 to 7, z is an integer from 5 to 15, n=1+m, n is an integer from 2 to 200, and 1 and m satisfy the relationship m/(1+m)≧0.04; (B) an epoxy resin; (C) an epoxy resin curing agent; and (D) a crosslinked rubber having a double bond and a polar group in the structure thereof and comprising a crosslinked styrene-butadiene rubber having a hydroxyl group or a carboxyl group as the polar group.