RESIN COMPOSITION, TONER FOR ELECTROPHOTOGRAPHY, HOT MELT COMPOSITION AND ETHYLENE/ -OLEFIN COPOLYMER

摘要

Provided is a resin composition containing: (A) an ethylene/±-olefin copolymer containing 91.0-99.9 parts by mole of (a) an ethylene-derived unit and 0.1-9.0 parts by mole of (b) a C 3 -C 8 ±-olefin-derived unit (wherein (a) + (b) is 100 parts by mole), while satisfying the requirements (i)-(iv) and (B) a thermoplastic resin and/or a thermosetting resin, wherein the mass ratio (A)/(B) is 0.1/99.9 to 50/50. This resin composition is useful for providing a toner which can be fixed by a relatively-low-temperature heating body and has good offset resistance, and which is suppressed in increase of particle diameters even if the toner is stored for a long time. (i) The Mw is 400 to 1,500. (ii) The Mw/Mn is 1.2 to 2.5. (iii) The penetration measured at 25°C is 13 dmm or less. (iv) The melting temperature is 50°C to 110°C.