Water-borne hermetic varnish
US4433080A · kind A · utility
3Cited by
7References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 14, 1981 |
| Grant date | Feb 21, 1984 |
| Priority date | — |
| Expiry date | Oct 14, 2001 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D163/00
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A hydrolytically stable heat curable composition useful as a hermetic varnish for electrical conductors is provided. It consists essentially of an aqueous solution of PA1 (1) an epoxy adduct which is the reaction product of: PA2 (A) a glycidyl ether of a dihydric phenol, PA2 (B) aminobenzoic acid, PA2 (C) a water soluble organic solvent boiling above 150.degree. C., and PA2 (D) a water soluble amine, and PA1 (2) a water soluble phenolic cross-linking agent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.