Biobased hydroxyl or carboxyl polyester resins
US10457771B2 · kind B2 · utility
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3References
18Claims
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Key dates
| Filing date | Sep 10, 2015 |
| Grant date | Oct 29, 2019 |
| Priority date | — |
| Expiry date | Nov 1, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09D167/02
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention relates to a linear or branched structured hydroxylated or carboxylated polyester resin that is free of unsaturated fatty acids, that is made from an acid component and an alcohol component, said acid component comprising at least one C4 to C6 carboxylic polyacid or anhydride, and at least one C5 to C54 carboxylic polyacid or anhydride, and with 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.