Method for recycling pet bottle
US7462649B2 · kind B2 · utility
26Cited by
12References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 16, 2002 |
| Grant date | Dec 9, 2008 |
| Priority date | — |
| Expiry date | Aug 14, 2023 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A through process comprising depolymerization reaction of used PET bottles with EG, recovering DMT by ester interchange reaction with MeOH, obtaining terephthalic acid by hydrolysis of the recovered DMT, and manufacturing a PET polymer which can be used for manufacturing PET bottles again by using the terephthalic acid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.