Process for depolymerizing polyesters
US5668186A · kind A · utility
76Cited by
1References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 20, 1996 |
| Grant date | Sep 16, 1997 |
| Priority date | — |
| Expiry date | Mar 20, 2016 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The invention relates to a novel process for depolymerizing polyesters by subjecting the polyesters to catalysts and organic solvents which are substantially free of oxygen and water in order to produce macrocyclic polyester oligomers substantially free of hydroxybutyl terminated linear impurities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.