We study the generalized superconvergent sum rules for a number of processes of the kind $P+P\ensuremath{\rightarrow}P+V$, where $P$ and $V$ stand for pseudoscalar and vector mesons, respectively. We find simple algebraic equations for the parameters of the leading Regge trajectories which are exchanged. The results are in good agreement with experiments. The limit of SU(3) symmetry is also considered.