Polyester ethers derived from asymmetrical monomers based upon bisanhydrohexitols
US10377765B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 11, 2016 |
| Grant date | Aug 13, 2019 |
| Priority date | — |
| Expiry date | Aug 11, 2036 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/55
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
An AB monomer, useful for the production of condensation polymers, wherein the AB monomer has the structure: A-X-C-Y-B; wherein A is reactive carbonyl derivative of carboxylic acids; Y is a bisanhydrohexitol unit derived from the group consisting of isosorbide, isoidide and isomannide; X is selected from the group consisting of: aromatic rings, including 1,4-phenylene, 1,3-phenylene, 2,6-naphthalene 2,7-naphthalene, and substituted derivatives thereof; heterocycles including, 2,5-furan, 2,5-thiophene, substituted 2,5-furan and substituted 2,5-thiophene; and saturated or unsaturated aliphatic chains; B is OH; and C is selected from the group consisting of ether oxygen, a sulfide, and an amine, wherein the amine is NH or NR wherein R is C1 to C6, attaching X to Y.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.