| abstract |
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 substituted 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. |