Hyperbranched olefin oil-based dielectric fluid
US9601231B2 · kind B2 · utility
12Cited by
16References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 28, 2012 |
| Grant date | Mar 21, 2017 |
| Priority date | — |
| Expiry date | Apr 25, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F4/65912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention generally relates to a dielectric composition which is a poly-α-olefin or poly(co-ethylene-α-olefin) having a backbone weight average molecular weight less than 10,000 daltons. The dielectric composition uses a metal-ligand complex as a precatalyst and exhibits a hyperbranched structure that enables low viscosity, and therefore good flow characteristics, combined with high fire point due to ability to increase molecular weight via branching rather than backbone growth. Other desirable properties include lowered pour point due to crystallization disruption, and desirable thermal oxidative stability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.