PROPYLENE POLYMER, PROCESS FOR PRODUCTION OF THE PROPYLENE POLYMER, AND PROPYLENE RESIN COMPOSITION

摘要

Disclosed are: a propylene polymer comprising the below-mentioned component (A) which becomes insoluble in p-xylene at 25ºC and the below-mentioned component (B) which can dissolve in p-xylene at 25ºC, wherein (i) the weight average molecular weight (Mw) as measure by GPC is 100,000 to 1,000,000, (ii) the content of a component insoluble in hot p-xylene is 0.3 wt% or less, and (iii) the degree of strain-hardening (?max) as determined by the elongational viscosity measurement is 2.0 or greater; a process for producing the propylene polymer; and a resin composition comprising 50.0 to 99.9 wt% of a propylene-ethylene copolymer (Z) and 0.1 to 50.0 wt% of a propylene polymer (M). Component (A): a component (CXIS) which becomes insoluble in p-xylene at 25ºC and which satisfies the requirements (A1) to (A5). Component (B): a component (CXS) which can dissolve in p-xylene at 25°C and which satisfies the requirements (B1) to (B4).