Poly(dihydroferulic acid) a biorenewable polyethylene terephthalate mimic derived from lignin and acetic acid and copolymers thereof
US9080011B2 · kind B2 · utility
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Key dates
| Filing date | Nov 12, 2012 |
| Grant date | Jul 14, 2015 |
| Priority date | — |
| Expiry date | Jun 7, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/83
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A biorenewable thermoplastic, poly(dihydroferulic acid) (PHFA), is an effective polyethylene terephthalate (PET) mimic that is prepared by a step-growth condensation polymerization of acetyldihydroferulic acid. Other biorenewable thermoplastic copolymers, poly(dihydroferulic acid-co-ferulic acid) are effective mimics of polystyrene and other thermoplastics. The PHFA copolymers can be prepared by the copolymerization of acetyldihydroferulic acid with acetylferulic acid, which are monomers that can be synthesized from starting materials isolated from lignin, rice bran, or other biorenewable sources.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.