Patent ID: 11952481
Assignee: BOREALIS AG
Field: Macromolecular chemistry, polymers (Chemistry)
Classification: CPC C | IPC C

Claim 11:
12. The process according to claim 10, wherein the single-site catalyst comprises (i) a complex formula (II):, wherein
M is Zr or Hf;
each R1 is a linear or branched C1-10 alkyl;
L is ethylene or Si(R6)2;
R6 is C1-10 alkyl, C6-10-aryl, C7-12-alkylaryl, or C7-12-arylalkyl;
each X is a hydrogen atom, C1-6-alkoxy, a halogen atom, or an R group;
R is C1-10 alkyl
each R4 is H or C1-3-alkyl;
W′ is phenyl, pyridyl, thiophenyl or furyl optionally substituted by up to 2 groups R5;
each R5 is C1-10-alkyl or two adjacent R5 groups taken together form a phenyl ring fused to W′, and
(ii) at least an alumoxane or a compound able to form an alkylmetallocene cation.