Specific method for preparing biobased polyesters
US9969840B2 · kind B2 · utility
1Cited by
0References
23Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 10, 2015 |
| Grant date | May 15, 2018 |
| Priority date | — |
| Expiry date | Sep 10, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/85
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a method for preparing a linear or branched hydroxylated and/or carboxylated polyester resin that is free of unsaturated fatty acids, comprising reacting an acid component with an alcohol component, said acid component comprising at least one C4 to C6 polycarboxylic acid or anhydride, and at least one C8 to C54 polycarboxylic acid or anhydride, and said alcohol component comprising at least one biobased polyol having a functionality of at least 2 bearing a 1,4:3,6-dianhydrohexitol unit, and at least one of two polyols b2) and b3).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.