  Recent INTEGRAL observations and archival BeppoSAX data have been analyzed to
deeply investigate the hard X-ray behavior of the neutron star, atoll type, low
mass X-ray Binary 4U1636-53. Our investigation in three different periods
outline three corresponding different sates. Infact, the source was detected in
both the canonical high and low state and moreover in one occasion \integral
spectrum shows, for first time in this source, a hard tail dominating the
emission above 30 keV. This spectrum is fitted as the sum of a Comptonized
component similar to soft state and a power-law component ($\Gamma=2.76$),
indicating the presence of a non thermal electron distribution of velocities.
