发明授权
US5312972A Conversion of hydroxymethyl-iminodiacetic acid to
phosphonomethyl-iminodiacetic acid
失效
羟甲基亚氨基二乙酸转化为膦酰基甲基亚氨基二乙酸
- 专利标题： Conversion of hydroxymethyl-iminodiacetic acid to phosphonomethyl-iminodiacetic acid
- 专利标题（中）： 羟甲基亚氨基二乙酸转化为膦酰基甲基亚氨基二乙酸
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申请号： US969705申请日： 1992-10-29
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公开(公告)号： US5312972A公开(公告)日： 1994-05-17
- 发明人: Barry A. Cullen
- 申请人： Barry A. Cullen
- 申请人地址： MA Lexington
- 专利权人： Hampshire Chemical Corp.
- 当前专利权人： Hampshire Chemical Corp.
- 当前专利权人地址： MA Lexington
- 主分类号： C07C227/18
- IPC分类号： C07C227/18 ; C07C229/16 ; C07F9/38 ; C07C229/00
摘要：
A process for preparing N-phosphonomethyl iminodiacetic acid wherein solutions of an alkali metal salt of IDA are reacted with formaldehyde so as to form the alkali metal salt of hydroxymethyliminodiacetic acid (HMIDA). The HMIDA can be subsequently reacted with a phosphorous source such as phosphorous acid to produce PMIDA in good yield.
公开/授权文献
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