Process for preparing esterification products from cyclic organic carbonates using catalysts comprising quaternary ammonium salts
US5969056A · kind A · utility
4Cited by
58References
23Claims
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Key dates
| Filing date | Jan 14, 1999 |
| Grant date | Oct 19, 1999 |
| Priority date | — |
| Expiry date | Jan 14, 2019 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08G63/87
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A process for the preparation of an esterification product comprises reacting a polyfunctional organic acid or anhydride and a cyclic organic carbonate compound in the presence of a catalyst to form an esterification product. The catalyst comprises a quaternary ammonium salt and a component selected from the group consisting of a metal, a salt of a metal, and mixtures thereof.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.