公开(公告)号：US20190211122A1

公开(公告)日：2019-07-11

申请号：US16323991

申请日：2017-10-25

申请人： LG CHEM, LTD.

发明人： Jeong Kyu LEE ,  Pum Suk PARK ,  In Young SONG ,  Sung Joon OH ,  Yi Young CHOI ,  Soon Ho SUN

IPC分类号： C08F210/16

CPC分类号： C08F210/16 ,  C08F4/65904 ,  C08F4/65912 ,  C08F4/65916 ,  C08F4/65925 ,  C08F4/65927 ,  C08F2420/06 ,  C08L23/08 ,  C08L23/16 ,  C08F210/08 ,  C08F2500/02 ,  C08F2500/13

摘要： The present invention relates to an ethylene/alpha-olefin copolymer and, more particularly, to an ethylene/alpha-olefin copolymer that exhibits excellent environmental stress crack resistance by appropriately controlling the ratio of crystal structure domain and amorphous domain, and the like. The ethylene/alpha-olefin copolymer comprises an ethylene repeating unit and an alpha-olefin repeating unit, and has a crystal structure including a crystalline domain containing lamellar crystals and an amorphous domain containing a tie molecule that mediates bonding between the lamellar crystals. The lamellar crystal thickness (dc) of the ethylene/alpha-olefin copolymer as calculated from the result of Small Angle X-ray Scattering (SAXS) analysis is between 12.0 and 16.0 nm, the amorphous domain thickness (da) is between 4.0 and 5.3 nm, and the thickness ratio da/dc is between 0.3 and 0.4.