Ethylene-based quaterpolymer having low glass transition temperature and preparation method thereof
AssigneeKorea Institute of Industrial Technology
InventorsDong Hyun Kim, Jung Soo Kim, Dong Gyu Jeon, Ji Hoon Jang
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Abstract
The present invention relates to a highly elastic, ethylene-based quaterpolymer and a preparation method thereof. More particularly, the present invention relates to a highly elastic, ethylene-based quaterpolymer which comprises a specific molar ratio of an ethylene unit, a C4-6 α-olefin unit, a C8-12 α-olefin unit and at least one functional unit derived from a styrene-based monomer and to a method for preparing the ethylene-based quaterpolymer using a metallocene catalyst.
Claims13
An elastic, ethylene-based quaterpolymer comprising:
- 55-93.9 mol % of an ethylene unit;
- 3-40 mol % of a C4-6 α-olefin unit;
- 3-40 mol % of a C8-12 α-olefin unit;
- and
- 0.1-5 mol % of a functional unit derived from at least one styrene-based monomer,
- the ethylene-based quaterpolymer having a weight-average molecular weight of 50,000-300,000 and a glass transition temperature between −40° C. and −80° C.
A method for preparing an ethylene-based quaterpolymer, comprising polymerizing 55-93.9 mol % of an ethylene monomer, 3-40 mol % of a C4-6 α-olefin monomer, 3-40 mol % of a C8-12 α-olefin monomer and 0.1-5 mol % of at least one styrene-based monomer using a metallocene catalyst.
Dependencies are inferred from the claim text.