Recycling of flexible foam
US5605935A · kind A · utility
2Cited by
9References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 3, 1994 |
| Grant date | Feb 25, 1997 |
| Priority date | — |
| Expiry date | Mar 3, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S521/912
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Process for recycling flexible foams by glycolysis and extraction. The glycolysis is conducted by allowing the foam to react with low molecular weight polyols, then allowing the mixture to separate in two phases.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.