Polyesters from assymetrical monomers based upon bisanhydrohexitols
US10364251B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 2, 2017 |
| Grant date | Jul 30, 2019 |
| Priority date | — |
| Expiry date | Jul 31, 2037 |
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 a carboxylic acid or ester or reactive carbonyl derivative, Y is a bisanhydrohexitol unit derived from isosorbide, isoidide or isomannide; X is selected from the group consisting of aromatic rings, substituted or unsubstituted heterocycles, and saturated or unsaturated aliphatic chains; and B is OH and C is an ester carbonyl link with the carbon attached to X and the oxygen attached to Y, and wherein the AB monomer is at least about 98% pure endo-substituted bisanhydrohexitol derivative or an at least about 98% pure exo-substituted bisanhydrohexitol derivative.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.