2 Bimodal linear block copolymers its manufacturing method and usage

摘要

PURPOSE: A two-component linear block copolymer, its preparation method and a bubble pack prepared by using the copolymer are provided, to improve the transparency, the strength and the flexibility. CONSTITUTION: The two-component linear block copolymer contains a tapered block, is obtained from at least one vinyl aromatic monomer of C8-C12 and at least one conjugated diene monomer of C4-C6, and comprises 55-95 wt% of a vinyl aromatic monomer and 5-45 wt% of a conjugated diene monomer. The two-component linear block copolymer comprises 30-90 wt% of a hexablock copolymer of vinyl aromatic block-conjugated diene block-tapered block-vinyl aromatic block-conjugated diene block-vinyl aromatic block; and 10-70 wt% of a triblock copolymer of vinyl aromatic-conjugated diene block-vinyl aromatic block.