| abstract |
One aspect of the present invention resides in a prepreg including a resin composition or a semi-cured product thereof and a fibrous base material, wherein the resin composition includes a polymer having a structural unit represented by formula (1) in a molecule and a curing agent in a predetermined content ratio, a cured product of the resin composition has a relative dielectric constant of 2.6-3.8, the fibrous base material includes a glass cloth having a relative dielectric constant of 4.7 or less and a dielectric loss tangent of 0.0033 or less, and a cured product of the prepreg has a relative dielectric constant of 2.7-3.8 and a dielectric loss tangent of 0.002 or less. In formula (1), Z represents an arylene group, R1 to R3 each independently represent a hydrogen atom or an alkyl group, and R4 to R6 each independently represent a hydrogen atom or an alkyl group having 1-6 carbon atoms. |