Method of hygienic disposal of chlorine-containing plastic material
US4031192A · kind A · utility
6Cited by
7References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 27, 1975 |
| Grant date | Jun 21, 1977 |
| Priority date | — |
| Expiry date | Aug 27, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10L9/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
To dispose of high-polymer, chlorine-containing plastics, such as PVC, without liberating hydrochloric acid in the atmosphere, the material is placed in a closed vessel and contacted with super-heated steam to split off gaseous hydrochloric acid; the resulting mixture of water vapor, steam and hydrochloric acid is removed, cooled and condensed, so that hydrochloric acid can be derived therefrom; the residue of the material after the hydrochloric acid has been removed can then be safely incinerated with other refuse, etc.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.