Crosslinkable dielectric composition
US6316542A · kind A · utility
8Cited by
7References
43Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1996 |
| Grant date | Nov 13, 2001 |
| Priority date | — |
| Expiry date | May 20, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/01
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The invention relates to a crosslinkable impregnating dielectric composition comprising a polydiene polyol, a polyisocyanate and a chemically inert liquid filler, (an insulating liquid) characterized in that a sufficient amount of the said liquid filler is used in order to maintain a viscosity of less than 50 mPa s at the impregnation temperature for a period at least equal to 1 day and in order to obtain a tans at 20.degree. C. and at 50 Hz, after complete crosslinking, of less than 0.02. The invention also relates to a process for preparing the said composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.