Patent ID: 6383654
Filing Date: 2002-05-07
Classification: B29C,C08L,Y10T

Abstract:
A molded article comprising:(i) a part containing a hard synthetic resin; and (ii) a part containing a soft propylene based block copolymer; wherein the both parts are integrated with each other, and the soft propylene based block copolymer is prepared by a process comprising the steps of:(I) carrying out copolymerization of propylene with ethylene until a content of a component (A) reaches from about 40 to 85% by weight based on the total weight of the component (A) and a component (B) defined below, said component (A) being a propylene-ethylene copolymer component having a content of a repeating unit derived from ethylene of from about 1.5 to 6.0% by weight; and (II) carrying out copolymerization of propylene with ethylene in the presence of the component (A) prepared in step (I) until a content of component (B) reaches from about 15 to 60% by weight based on the total weight of the components (A) and (B), said component (B) being a propylene-ethylene copolymer component having a content of a repeating unit derived from ethylene of from about 7 to 17% by weight; provided that an intrinsic viscosity, [&eegr;]B, of the component (B) is from about 2 to 5 dl/g, and a ratio of [&eegr;]B to an intrinsic viscosity, [&eegr;]A, of the component (A), namely [&eegr;]B/[&eegr;]A, is from about 0.5 to 1.8.