| abstract |
Polyolefin polymer with high molecular weight in the form of a comb, star, nanogel or structural combinations thereof comprising a plurality of polyolefin arms each independently selected from the group consisting of homo- and copolymers of substituted and unsubstituted 1-alkenes linked to a polymer backbone, said backbone having repeating units containing a group selected from the group consisting of aliphatic groups, aromatic groups, heteroatom-containing groups and combinations thereof, in which the polyolefin polymer has a molecular weight (MW) of at least 0.8*106 g/mol, the polyolefin arm has a molecular weight (M¿W?) of at least 5*10?3¿ g/mol. The ratio between the molecular weight (M¿W?) of the polyolefin polymer and the molecular weight (MW) of the pre-arm (M¿W,polymer/MW,pre-arm?) is at least 4 and the molecular weight distribution of the pre-arm is at least 4 and at most 30. |