Recovery of components from polyester resins
US5654470A · kind A · utility
1Cited by
6References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 26, 1996 |
| Grant date | Aug 5, 1997 |
| Priority date | — |
| Expiry date | Jul 26, 2016 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07C67/03
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
There is described a process for the depolymerization of polyethylene terephthalate into component monomers at ambient pressure. Monomer solids that deposit during cooling, as part of the recovery operation, are removed using a scraped wall heat exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.