Process for making activated aldarate esters, ester/lactones and lactones
US5312967A · kind A · utility
28Cited by
1References
6Claims
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Key dates
| Filing date | Aug 12, 1992 |
| Grant date | May 17, 1994 |
| Priority date | — |
| Expiry date | Aug 12, 2012 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D493/04
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
A single step process for converting aldaric acid salts to activated aldarates utilizing a lower alkanol as both solvent and esterifying agent is described. The activated aldarates are particularly useful as monomers for polymerizations with primary diamines in which the nitrogen atoms are bound to aliphatic carbon atoms to form poly(aldaramides).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.