Recovery of monomer from polyurethane materials by depolymerization
US9815808B2 · kind B2 · utility
2Cited by
11References
13Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 27, 2017 |
| Grant date | Nov 14, 2017 |
| Priority date | — |
| Expiry date | Feb 27, 2037 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02W30/62
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Methods for recovering monomers from polymers, such as polyurethanes (including thermoset polyurethanes) include heating the polymer to depolymerize the polymer and release the monomer. The monomer may be directly recovered. The polymer may include a poly(β-methyl-δ-valerolactone) (PMVL) block and the monomer recovered may be β-methyl-δ-valerolactone (MVL).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.