Loading patent…
AssigneeLG Chem, Ltd.
InventorsSeul Ki Im, Seok Pil Sa, Hyun Mo Lee, Ji Hyun Park, Yun Kon Kim, Ki Soo Lee, Eun Ji Shin
Estimating the term…
A polyolefin-polystyrene multi-block copolymer and a method of making the same are disclosed herein. In some embodiments, a polyolefin-polystyrene multi-block copolymer satisfies conditions (a) to (c) determined by gel permeation chromatography (GPC) and condition (d) determined by 13C NMR, (a) a weight average molecular weight (Mw) of 50,000 g/mol to 150,000 g/mol, (b) a molecular weight distribution of 1.5 to 3.0, a differential of concentration fraction to logarithm of molecular weight as a function of logarithm of molecular weight, obtained from GPC, is modeled to a Gaussian function represented by Equation 1, and (d) a polyolefin block contained in the polyolefin-polystyrene multi-block copolymer includes at least one branched chain. The polyolefin-polystyrene multi-block copolymer has a structure in which polystyrene chains are attached to both ends of a polyolefin chain. The polyolefin-polystyrene multi-block copolymer has excellent mechanical properties such as tensile strength, elongation at break, and modulus.
A polyolefin-polystyrene multi-block copolymer satisfying the following conditions (a) to (c) determined by gel permeation chromatography (GPC) and the following condition (d) in a 13C NMR at 500 MHz using tetrachloroethane-d2, as a solvent, and tetramethylsilane (TMS) as a standard material spectrum:
Dependencies are inferred from the claim text.