Lg Chem, Ltd

Seon Kyoung Kim

Yong Ho Lee

Ki-Soo Lee

Min-Seok Cho

Heon-Yong Kwon

Dae-Sik Hong

Kyoung-Chan Lim

Se Hui Sohn

Manseong Jeon

The present description relates to olefin block copolymers having excellent elasticity and processability in conjunction with enhanced heat resistance, and to a preparation method thereof. The olefin block copolymers comprise a plurality of blocks or segments that comprise ethylene or propylene repeating units and &#x3b1;-olefin repeating units at different mole fractions from one another, wherein the block copolymer shows peaks at the 2&#x3b8; of 21.5&#xb1;0.5&#xb0; and 23.7&#xb1;0.5&#xb0; in a wide-angle x-ray diffraction (WAXD) pattern, and the peak ratio defined by (the peak area at 21.5&#xb1;0.5&#xb0;)/(the peak area at 23.7&#xb1;0.5&#xb0;) is no more than 3.0.

Olefin block copolymers and production methods thereof

Growing community of inventors

Daejeon, South Korea

Seon Kyoung Kim