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US 2007/0191605 A1Published application
Method for the production of ling-chained quaternary ammonium oxalates and ammonium hydrogenoxalates
OwnerKlaus Raabinventor
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Abstract
The present invention relates to a novel method for the production of long-chained quaternary ammonium oxalates and of long-chained quaternary ammonium hydrogen oxalates by reacting amines with dimethyl carbonate and further reacting the intermediate product with oxalic acid or oxalic acid dihydrate.
Claims12
A method for the production of quaternary ammonium oxalates or of quaternary ammonium hydrogen oxalates of formula (1)
- by reacting amines of formula (2)
- with dimethyl carbonate
- and further reacting the intermediate product with oxalic acid or oxalic acid dihydrate, in which
- X⊖ is ½C2O42⊖ or HC2O4⊖,
- R1 is a straight-chained or branched, aliphatic hydrocarbon radical having 8 to 22 carbon atoms, which is saturated or can contain one, two or three C═C-double bonds,
- R2 is CH3, C2H5, C3H7, C4H9 or the meaning given for R1, and
- R3 is CH3, C2H5, C3H7, C4H9,
- where the reaction of the amine of formula (2) with dimethyl carbonate is carried out under the pressure which is established here in the closed reaction vessel, and the further reaction of the isolated or nonisolated intermediate product with oxalic acid or oxalic acid dihydrate is carried out in a solvent.
5 more elements
Dependencies are inferred from the claim text.