Catalyst systems and processes for poly alpha-olefin having high vinylidene content
US11680121B2 · kind B2 · utility
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1References
12Claims
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Key dates
| Filing date | Jun 15, 2021 |
| Grant date | Jun 20, 2023 |
| Priority date | — |
| Expiry date | Jul 10, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/07
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A process for making a poly alpha-olefin (PAO) having a relatively high vinylidene content (or combined vinylidene and tri-substituted vinylene content) and a relatively low vinyl and/or di-substituted vinylene content, as well as a relatively low molecular weight. The process includes: contacting a feed containing a C2-C32 alpha-olefin with a catalyst system comprising activator and a bis-cyclopentadienyl metallocene compound, typically a cyclopentadienyl-benzindenyl group 4 transition metal compound.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.