Cascade arc plasma torch and a process for plasma polymerization
US4948485A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 23, 1988 |
| Grant date | Aug 14, 1990 |
| Priority date | — |
| Expiry date | Nov 23, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05H1/3452
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
The present invention is directed to an arrangement of cascade arc plasma torches in a process for plasma polymerization. The arrangement is utilized in low temperature plasma polymerization coating and utilizes a plasma reactor with concentric electroconductive rings separated by insulator rings. The rings are positioned between electrode connectors and form a central passage through the plasma reactor. A voltage supply source provides a voltage across the plasma reactor so as to initiate and continue the polymerization coating process. Downstream of the plasma reactor, an arrangement is provided by which monomeric gas is fed into a passage at a downstream end of the reactor so as to enable plasma polymerization.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.