3-Hydroxycarboxylic acid production and use in branched polymers
US7138480B2 · kind B2 · utility
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2Claims
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Key dates
| Filing date | Mar 3, 2003 |
| Grant date | Nov 21, 2006 |
| Priority date | — |
| Expiry date | May 19, 2024 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC12R2001/40
- WIPO fieldBiotechnology
- WIPO sectorChemistry
Abstract
This invention relates to a process for the preparation of a 3-hydroxycarboxylic acid from a 3-hydroxynitrile. More specifically, 3-hydroxyvaleronitrile is converted to 3-hydroxyvaleric acid in high yield at up to 100% conversion, using as an enzyme catalyst 1) nitrile hydratase activity and amidase activity or 2) nitrilase activity of a microbial cell. 3-Hydroxyvaleric acid is used as a substitute for ε-caprolactone in the preparation of highly branched copolyester.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.