Coated electrical assembly
US9992875B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 25, 2014 |
| Grant date | Jun 5, 2018 |
| Priority date | — |
| Expiry date | Dec 27, 2034 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/1377
- WIPO fieldSemiconductors
- WIPO sectorElectrical engineering
Abstract
The present invention relates to an electrical assembly which has a conformal coating, wherein said conformal coating is obtainable by a method which comprises: (a) plasma polymerization of a compound of formula (I) and a fluorohydrocarbon, wherein the molar ratio of the compound of formula (I) to the fluorohydrocarbon is from 5:95 to 50:50, and deposition of the resulting polymer onto at least one surface of the electrical assembly: wherein: R1 represents C1-C3 alkyl or C2-C3 alkenyl; R2 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl; R3 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl; R4 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl; R5 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl; and R6 represents hydrogen, C1-C3 alkyl or C2-C3 alkenyl, and (b) plasma polymerization of a compound of formula (I) and deposition of the resulting polymer onto the polymer formed in step (a).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.