- 专利标题： Solutions of trialkali metal salts of MGDA with an excess of L-enantiomer, their manufacture and use
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申请号： US15516589申请日： 2015-10-07
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公开(公告)号： US09873659B2公开(公告)日： 2018-01-23
- 发明人: Marta Reinoso Garcia , Constanze Franzke , Armin Stamm
- 申请人： BASF SE
- 申请人地址： DE Ludwigshafen
- 专利权人： BASF SE
- 当前专利权人： BASF SE
- 当前专利权人地址： DE Ludwigshafen
- 代理机构： Oblon, McClelland, Maier & Neustadt, L.L.P.
- 优先权： EP14189400 20141017
- 国际申请： PCT/EP2015/073103 WO 20151007
- 国际公布： WO2016/058875 WO 20160421
- 主分类号： C11D3/33
- IPC分类号： C11D3/33 ; C07C227/42 ; C07C229/24 ; C07C229/16 ; C07C227/26 ; C11D3/20 ; C11D3/04 ; C11D3/10
摘要：
Aqueous solution containing in the range of from 60.5 to 75% by weight of a mixture of trialkalimetal salts of the L-and D-enantiomers of methyl glycine diacetic acid (MGDA), said mixture containing predominantly the respective L-isomer with an enantiomeric excess (ee) in the range of from 3 to 97%, wherein said trialkali metal salts have the general formula (I) [CH3—CH(COO)—N(CH2—COO)2]K3−xNax (I) wherein x is in the range of from zero to 2.9.
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