| abstract |
[Problem] To provide a polyester, film, and adhesive composition having excellent solvent solubility, heat resistance, adhesive strength, low dielectric constant and dielectric loss tangent, and excellent dielectric properties, and adhesive sheets, laminates, and printed wiring boards using the same. [Solution] Polyester having an ester group concentration of 5000 eq/10 6 g or less and a glass transition temperature of -30°C or higher. |