Corrosion inhibiting EMI/RFI shielding composition and method of its use
US5284888A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Oct 28, 1991 |
| Grant date | Feb 8, 1994 |
| Priority date | — |
| Expiry date | Oct 28, 2011 |
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, or isocyanurate terminated second polymer, a stabilized conductive filler, and an azole. In one embodiment of the invention a composition is provided comprising a polyurethane which comprises a fluoroolefin vinyl ether and an isocyanurate, a stabilized copper powder, and a triazole selected from the group consisting of alkyl substituted aromatic triazoles and other azoles. The invention further provides a method of composition a substrate with a composition 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.