发明名称 |
PROCESS FOR THE PREPARATION OF A COMPOSITION COMPRISING MESO-TARTARIC ACID |
摘要 |
The present invention relates to a process for the preparation of a composition comprising tartaric acid wherein between 55 and 90% by weight of the tartaric acid is meso-tartaric acid, comprising the steps of (i) preparing an aqueous mixture comprising between 35 and 65% by weight of a di-alkali metal salt of L-tartaric acid, a di-alkali metal salt of D-tartaric acid, a mixture of di-alkali metal salts of L-tartaric acid, D-tartaric acid, and optionally meso-tartaric acid, and between 2 and 15% by weight of an alkali metal or alkaline metal hydroxide, and (ii) stirring and heating the aqueous mixture to a temperature of between 100°C and its boiling point until between 55 and 90% by weight of tartaric acid has been converted to meso-tartaric acid.
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申请公布号 |
CA2763612(A1) |
申请公布日期 |
2010.12.09 |
申请号 |
CA20102763612 |
申请日期 |
2010.05.27 |
申请人 |
AKZO NOBEL CHEMICALS INTERNATIONAL B.V. |
发明人 |
BAKKENES, HENDRIKUS WILHELMUS;BERGEVOET, ROBERTO ALOYSIUS GERARDUS MARIA;MEIJER, JOHANNES ALBERTUS MARIA;STEENSMA, MARIA |
分类号 |
C01D3/26;C07C51/367;C07C51/487 |
主分类号 |
C01D3/26 |
代理机构 |
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