ALPHA-OLEFIN BASED BRANCHED POLYMER

摘要

A polymer comprising units (1) derived from an alpha-olefin having at least 3 carbon atoms (1'), units (2) derived from divinylbenzene or C>1-10<hydrocarbyl substituted derivatives thereof (2'), and units (3) derived from ethylene (3'), the polymer comprising at least 75 mole % of units (1), from 0.01 to 5 mole % of units (2), and up to 20 mole % of units (3), the polymer having a branching factor BF 0.75. A process for preparing a polymer comprising units (1) derived from an alpha-olefin having at least 3 carbon atoms (1'), units (2) derived from divinylbenzene or C>1-10<hydrocarbyl substituted derivatives thereof (2'), and units (3) derived from ethylene (3'), by contacting the alpha-olefin (1'), the divinylbenzene compound (2'), and ethylene (3') in the presence of a polymerisation catalyst under polymerisation conditions wherein the mole ratio of alpha-olefin (1') to divinylbenzene or C>1-10<hydrocarbyl substituted derivatives thereof (2') is at least 10:1, the mole ratio of divinylbenzene or C>1-10<hydrocarbyl substitut ed derivatives thereof (2')to ethylene (3') is in the range of from 1:0.1 to 1:2000, and the mole ratio of (1') to (3') is at least 4:1.