Electrical insulating coatings
US4186122A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 29, 1977 |
| Grant date | Jan 29, 1980 |
| Priority date | — |
| Expiry date | Aug 29, 1997 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2367/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A polyester resin, polyester-imide resin or polyester-amide-imide resin dissolved in a solvent containing 60% by weight or more of at least one polyhydric alcohol derivative selected from the group consisting of R.sub.1 COO(CHR.sub.2 CH.sub.2 O).sub.n H, R.sub.1 COO(CHR.sub.2 CH.sub.2 O).sub.n COR.sub.3, R.sub.1 O(CHR.sub.2 CH.sub.2 O).sub.n COR.sub.3 and R.sub.1 O(CHR.sub.2 CH.sub.2 O).sub.n R.sub.4, wherein R.sub.1, R.sub.3 and R.sub.4 are independently lower alkyl, aryl or aralkyl; R.sub.2 is hydrogen or methyl; and n is an integer of 1 to 3, gives an electrical insulating coating having excellent storage stability and high resin concentration without causing defects of phenols when used as a solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.