Method for polymerizing olefins in the presence of nickel complexes and corresponding catalytic system
US6818714B1 · kind B1 · utility
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46Claims
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Key dates
| Filing date | Feb 4, 2002 |
| Grant date | Nov 16, 2004 |
| Priority date | — |
| Expiry date | Feb 4, 2022 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F210/16
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This system consists of (A) at least one ligand (I) and (B) at least one nickel compound chosen from nickel complexes of zero oxidation state; &pgr;-allylnickels; and compounds of the bis(allyl)nickel type where E, E′=O, S; X, X′=P, As, Sb; R1, R′1=H, alkyl, aryl, arylalkyl, alkylaryl, halogen, OH, alkoxide where R′=a hydrocarbon radical of the C1-C15 type;—SO3Y where Y=Li, Na, NH4+, NR″4+ (R″=C1-C15 hydrocarbon radical); R2, R′2, R3, R′3, R4 and R′4=alkyl, arylalkyl; and R=divalent radical.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.