NUCLEATION WITH A BLOCK COMPOSITE NUCLEATOR

摘要

The composition (A) 30-95 wt% of a random or a homogeneous propylene-based inter-polymer; And (B) comprising a block composite nucleation agent of 5-70 wt%, the propylene-based inter-polymer, (i) a propylene-based polymer, based on the total weight of the inter-7 wt% to 49 wt% of a C ₂ and C _4-10 α- at least one kind of comonomer content of the olefin, (ii) 0.90 g / cc density of less, and (iii) 1 g / 10 bun has over MFR (230 ℃ / 2.16 kg) ; The block composite nucleation agents are, (1) a first polymer comprising a polypropylene; (2) an alpha-olefin as a second polymer comprising a base polymer, wherein said alpha-olefin is selected from at least one of C ₂ and C _4-10 α- olefins, said second polymer; And (3) the first, as the block copolymer having a segment and a second segment, the block of the first segment of the copolymer having the same composition as the first polymer in the block composite nucleation claim, wherein the block copolymer the second segment comprises the block copolymer, having the same composition as the second polymer of the block composite nucleation agent.;