Patent ID: 10316119

Abstract:
To provide novel ultrahigh molecular weight polyethylene particles having a high melting point and exhibiting high crystallinity, thus capable of providing a molded product excellent in mechanical strength, thermal resistance and abrasion resistance.Ultrahigh molecular weight polyethylene particles which satisfy that (1) the intrinsic viscosity (η) is at least 15 dL/g and at most 60 dL/g, (2) the bulk density is at least 130 kg/m3 and at most 700 kg/m3, and (3) ΔTm (ΔTm=Tm1−Tm2) i.e. the difference between a melting point (Tm1) in 1st scan and a melting point (Tm2) in 2nd scan, measured by a differential scanning calorimeter (DSC), is at least 11° C. and at most 30° C.