Elastic terpolymer and preparation method thereof

摘要

The present invention relates to an elastic terpolymer that can acquire good mechanical properties and elasticity (flexibility) at the same time, and a preparation method thereof.;The elastic terpolymer, which is a copolymer of 40 to 70 wt % of ethylene, 15 to 55 wt % of a C3-C20 alpha-olefin, and 0.5 to 20 wt % of a diene as obtained in the presence of a group 4 transition metal catalyst, satisfies that: (i) the weight average molecular weight measured by GPC is 100,000 to 500,000; and (ii) the ethylene content x (wt %) and the crystallization enthalpy y (ΔHcJ/g) of the copolymer measured by DSC satisfy a defined relational expression.

主权项

1. An elastic terpolymer, which is a copolymer of 40 to 70 wt % of ethylene, 15 to 55 wt % of a C3-C20 alpha-olefin, and 0.5 to 20 wt % of a diene as obtained in the presence of a group 4 transition metal catalyst, wherein the elastic terpolymer satisfies that:
the weight average molecular weight measured by GPC is 100,000 to 500,000; and ii) the ethylene content x (wt %) and the crystallization enthalpy y (ΔHc; J/g) of the copolymer measured by DSC satisfy the relational expression given by 1.55x−80.00≦y≦1.55x−75.00.