  Within the standard model there exist certain relations between CP violating
rate differences in B decays in the SU(3) limit. We study SU(3) breaking
corrections to these relations in the case of charmless, hadronic, two body $B$
decays using the improved factorization model of Ref.\cite{3}. We consider the
cases $B \to PP$ and $B \to PV$ for both $B_d$ and $B_s$ mesons. We present an
estimate for $A_{CP}(\pi^- \pi^+)$ in terms of $A_{CP}(K^- \pi^+)$.
