Insulated wire, coil, and electrical or electronic equipment
US11437163B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 29, 2020 |
| Grant date | Sep 6, 2022 |
| Priority date | — |
| Expiry date | Oct 15, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D179/08
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An insulated wire, containing a conductor and an insulating film provided in contact with the conductor, in which the insulating film provided in contact with the conductor contains a polyimide resin, and the polyimide resin contains a constituting unit (A) derived from 2,2-bis[4-(4-amininophenoxy)phenyl]propane and a constituting unit (B) derived from 9,9-bis(4-aminophenyl)fluorene as a diamine-derived constituting unit; the polyimide resin has an imide group concentration of 25.0% or less; and the ratio of the content of the constituting unit (B) occupied in the diamine-derived constituting unit in the polyimide resin is 1 to 40 mol %.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.