Method for treating resin composition
US6653410B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 27, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Dec 27, 2021 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC01B13/36
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
Disclosed is a treating method of a resin composition comprising: kneading a resin composition comprising a thermoplastic resin, 0 to 0.7 part by weight, based on 1 part by weight of the thermoplastic resin, of a treating agent having a capacity of hydrogenating a halogen and a halide, at 280 to 450° C., in the presence of a metal compound which combines with a halogen atom to generate a metal halide compound having a boiling point or sublimation point not greater than 450° C. at atmospheric pressure, to thereby convert the halide into a metal halide; and separating and collecting, from the resin composition, each of a mixture of the thermoplastic resin and the treating agent having a capacity of hydrogenating a halogen, and the metal halide. This makes it possible to treat a waste without conducting gasification or liquefaction of a resin by combustion or thermal decomposition, thereby removing and collecting the halogen such as bromine and the metal oxide therefrom in a high yield in a short time. The resin thus treated can be collected as a solid fuel in a high yield and can be provided for recycling use.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.