METHOD FOR THE PREPARATION OF POLYALPHA-OLEFIN TRIMERS
Patent Information
- Application Number
- DE602019076999
- Authority / Receiving Office
- DE · DE
- Patent Type
- Patents
- Current Assignee / Owner
- Priority Date
- 2019-02-07
- Filing Date
- 2019-08-09
- Publication Date
- 2025-10-15
- Estimated Expiration
- 2039-08-09
AI Technical Summary
Conventional catalyst systems struggle to produce alpha-olefin dimers with high vinylidene unsaturation and low vinylene content at high yields, leading to inefficient production of low viscosity polyalphaolefins (PAOs) that fail to meet stringent lubricant requirements, particularly in low viscosity engine oils and electric vehicle driveline fluids, and require costly separation stages.
A process using asymmetric unbridged metallocene catalysts, such as indacenyl-type ligands, to produce alpha-olefin dimers with >95 wt% vinylidene and 0 wt% vinylene content, eliminating the need for separation stages between oligomerization operations and enhancing catalyst efficiency.
The process achieves high yields of high-purity PAO dimers and trimers, reducing production costs and increasing efficiency by eliminating separation stages, while meeting the demanding viscosity and oxidative stability requirements of modern lubricants.