Conformal coating, composition and method for the mitigation of growth of metallic crystalline structures
US10731042B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 18, 2016 |
| Grant date | Aug 4, 2020 |
| Priority date | — |
| Expiry date | Jun 10, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09872
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A nanocomposite coating composition for use in the mitigation of whisker growth from a metallic surface (82) includes a polymer matrix (86) comprising a base polymer and insulating material nanoplatelets (85), for example clay nanoplatelets, within the polymer matrix (86). A conformal coating (84) for application to a metal surface (82) is formed from the coating composition. The conformal coating mitigates the spontaneous growth of whiskers (83), in particular tin whiskers, from the coated surface (82), reducing the risk of short-circuits caused by such whiskers bridging gaps within electronic devices. Methods are provided for the preparation of coating compositions and coatings.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.