Electrical insulating resin composition comprising a polyester resin or ester-imide resin
US4127553A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 19, 1977 |
| Grant date | Nov 28, 1978 |
| Priority date | — |
| Expiry date | Apr 19, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01B3/422
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
An electrical insulating resin composition comprising a resin obtained by reacting (a) one or more tri- or higher polyhydric alcohols and/or tri- or higher polybasic acids, (b) one or more dihydric alcohols, (c) one or more dibasic acids, (d) one or more monobasic acids containing one or more aromatic rings in the molecule, and/or (e) one or more monohydric alcohols containing one or more aromatic rings in the molecule, and if desired (f) one or more compounds containing or being able to form one or more 5-membered imide rings, can give high solids varnishes without lowering the molecular weight of the resin produced. Said varnishes can give coating films excellent in heat resistance, flexibility and mechanical strengths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.