Abstract
Materials and Life Science Facility (MLF) in Japan Proton Accelerator Complex (J-PARC), which is one of the most powerful pulse neutron scattering facilities in the world, will provide first neutron beam in May, 2008. In the article we review the expected soft materials researches, especially polymer researches in J-PARC/MLF based on the current neutron researches in three fields; mesoscopic structure studies using small-angle scattering, surface and interfacial studies by reflectivity and slow dynamics by inelastic and gasielastic scattering, especially by the neutron spin-echo technique.