Corrosion inhibiting EMI/RFI shielding coating and method of its use
US5061566A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 28, 1989 |
| Grant date | Oct 29, 1991 |
| Priority date | — |
| Expiry date | Dec 28, 2009 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31609
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A corrosion inhibiting, EMI/RFI shielding composition is provided comprising a polyurethane resin which comprises a hydroxy or amine functional first polymer and an isocyanate terminated second polymer, a stabilized conductive filler, and an azole. In one embodiment of the invention a coating is provided comprising a polyurethane which comprises a fluoroolefin vinyl ether and an isocyanate terminated castor oil prepolymer, a stabilized copper powder, and a triazole selected from the group consisting of alkyl substituted aromatic trianzoles and other azoles. The invention further provides a method of coating a substrate with a coating of the invention in order to provide EMI/RFI shielding and prevent corrosion, and a substrate thus coated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.