Enzyme-catalyzed process for the preparation of macrocyclic polyester oligomers
US7541422B2 · kind B2 · utility
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24Claims
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Key dates
| Filing date | Jun 1, 2006 |
| Grant date | Jun 2, 2009 |
| Priority date | — |
| Expiry date | Jun 22, 2027 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G2650/34
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the enzyme-catalyzed preparation of cyclic ester oligomers from dicarboxylic acids and/or dicarboxylic acid derivatives and diols, hydroxycarboxylic acids and/or hydroxycarboxylic acid esters, and/or linear ester oligomers in the presence of a solvent comprising a tertiary alcohol and a non-alcoholic solvent.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.