Plasma treated molding composition and process for modifying a surface thereof
US9149834B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 23, 2012 |
| Grant date | Oct 6, 2015 |
| Priority date | — |
| Expiry date | Jul 23, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T428/31576
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A process for applying an overlayer to a cured thermoset molding composition is provided that includes exposing the cured thermoset molding composition to a plasma under conditions that modify the surface energy of a surface of the article without visually modifying the surface. The surface of the article is then overcoated with an overlayer having superior adhesion to a like article absent the intermediate plasma treatment. A component is also provided that is cured thermoset resin article having a shape and a surface. An overlayer is applied to the surface while the surface is still plasma activated. The overlayer is adhesion is unchanged by 4 weeks in a 100% humidity chamber at 30° C. over at least 95 area % of an interface between the overlayer and the surface.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.