MULTIMODAL POLYETHYLENE COPOLYMER RESIN COMPOSITION, A PREPARATION PROCESS THEREFORE AND A POLYMERIC PRODUCT COMPRISING THE SAME

摘要

The present invention relates to a multimodal polyethylene co-polymer resin composition comprising (a) a lower molecular weight (LMW) ethylene polymer fraction and (b) a higher molecular weight (HMW) ethylene copolymer fraction, wherein the higher molecular weight (HMW) ethylene co-polymer fraction comprises (b1) a higher molecular weight (HMW) ethylene co-polymer subfraction having a weight average molecular weight at least 2 times the weight average molecular weight (Mw) of said multimodal polyethylene co-polymer resin composition, which (b1) higher molecular weight (HMW) ethylene co-polymer subfraction amounts from about 1-30 wt% of the total amount of the multimodal polyethylene co-polymer resin composition and comprises comonomers in amount of at least about 1 wt% of the total amount of comonomer present in said multimodal polyethylene copolymer resin composition, a process for its preparation and its use.