One-component epoxy resin system for trickle impregnation and hot dip rolling
US6579566B1 · kind B1 · utility
16Cited by
9References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1997 |
| Grant date | Jun 17, 2003 |
| Priority date | — |
| Expiry date | Jul 22, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K15/12
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a process for preparing resin impregnated wire windings by trickling an impregnating resin onto a heated rotating winding or by dipping the heated rotating winding in a bath filled with an impregnating resin. The impregnating resin comprises an epoxy resin and an initiator for the polymerization of the epoxy resin. The initiator is either a selected compound that is activated by ultraviolet irradiation, a heat-activatible initiator, or a mixture thereof. The heat-activatible initiator is a mixture comprising at least one quarternary ammonium salt and at least one thermal radical former.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.