Method for producing an elastomer using a transition metal catalyst
AssigneeLG Chem, Ltd.
InventorsEun-Jung Lee, Sung-Soo Park, Beom-Doo Seo, Cheon-Il Park, Choong-Hoon Lee, Jong-Joo Ha, Jung-A Lee
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Abstract
The present invention relates to a method of producing an elastomer. Specifically, the method of producing an elastomer according to the present invention comprises a step of polymerizing ethylene, propylene, and optionally, a diene monomer in the presence of a catalyst composition containing a transition metal compound. The method of producing an elastomer according to the present invention makes it possible to prepare a high molecular weight, ethylene-propylene or ethylene-propylene-diene, elastic copolymer at a high temperature.
Claims6
A method of producing an ethylene-propylene-diene elastomer, which comprises a step of polymerizing ethylene, propylene, and a diene monomer in the presence of a catalyst composition comprising (1,2,3,4-tetrahydroquinoline-8-yl)[tetramethylcyclopentadienyl-N]titanium dimethyl;
- wherein the step of polymerizing is a continuous solution polymerization;
- wherein the ethylene-propylene-diene elastomer has a density of 0.860-0.895 g/cm3, and
- wherein the ethylene-propylene-diene elastomer has an ethylene content of being at least 20% by weight but less than 90% by weight, a propylene content of 10 to 80% by weight, and a diene monomer content of being greater than 0 but no more than 20% by weight.
Dependencies are inferred from the claim text.