Monocyclopentadienyl pyridyl hydroxyl amine catalyst compounds and systems for olefin polymerization
US11919981B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2021 |
| Grant date | Mar 5, 2024 |
| Priority date | — |
| Expiry date | Apr 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F2420/04
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to mono cyclopentadienyl pyridyl hydroxyl amine catalyst compounds represented by Formula I(a) or I(b): wherein: M is a group 3-12 metal; R1 is a hydrocarbyl group or a silyl group; R2, R3, R4, R5, R6, R7, R8, R9, and R10 are independently selected from the group consisting of hydrogen, hydrocarbyl, alkoxy, silyl, amino, aryloxy, halogen and phosphino, wherein any two adjacent R groups may be joined to form a saturated or unsaturated single or multicyclic hydrocarbyl ring or heterocyclic ring; and each X1 and X2 is independently an anionic leaving group or X1 and X2 may be joined together to form a dianionic group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.