Recovery of monomer from polyurethane materials by depolymerization
US10160741B2 · kind B2 · utility
1Cited by
12References
7Claims
0Family size
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Key dates
| Filing date | Oct 10, 2017 |
| Grant date | Dec 25, 2018 |
| Priority date | — |
| Expiry date | Oct 10, 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.