Bio-based block polymers derived from lignin and fatty acids
US9512249B2 · kind B2 · utility
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15Claims
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Key dates
| Filing date | Mar 7, 2014 |
| Grant date | Dec 6, 2016 |
| Priority date | — |
| Expiry date | Mar 7, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L25/18
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention pertains to bio-based block polymers synthesized from functionalized lignin-based molecules (A-monomer) and functionalized fatty acids or fatty alcohols (B-monomer) derived from plant or animal oils, waxes or fats. The block polymers can be synthesized via numerous polymerization techniques, such as reversible addition-fragmentation chain transfer (RAFT). Most importantly, this class of bio-based block polymers shows promise as providing sustainable yet scalable and tunable thermoplastic elastomers and pressure-sensitive adhesives, among other applications.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.