Claims
- 1. In the method of converting natural and synthetic organic polymeric substances into vitreous carbon by solid-state pyrolysis by heating said polymeric substances under given temperature/time conditions in a non-oxidizing atmosphere in a reaction vessel the improvement wherein the reaction vessel is divided into a lower part and an upper part, the polymeric substance is positioned in the lower part and is heated under quasi-isothermal conditions, and the atmosphere, in the upper part of the reaction vessel, is heated in a manner so as to provide a temperature that decreases in the upward direction and the volatile decomposition products formed during the pyrolysis are condensed and evaporated again in the upper part of the reaction vessel.
Priority Claims (1)
Number |
Date |
Country |
Kind |
2843676 |
Oct 1978 |
DEX |
|
Parent Case Info
This is a division, of application Ser. No. 082,395, filed Oct. 5, 1979 and now U.S. Pat. No. 4,287,025.
US Referenced Citations (6)
Divisions (1)
|
Number |
Date |
Country |
Parent |
82395 |
Oct 1979 |
|