发明授权
US08748366B2 Process for the preparation of a spray powder comprising one or more glycine-N,N-diacetic acid derivatives and use of the spray powder for producing compression agglomerates
有权
制备包含一种或多种甘氨酸-N，N-二乙酸衍生物的喷雾粉末和使用喷雾粉末生产压缩附聚物的方法
- 专利标题： Process for the preparation of a spray powder comprising one or more glycine-N,N-diacetic acid derivatives and use of the spray powder for producing compression agglomerates
- 专利标题（中）： 制备包含一种或多种甘氨酸-N，N-二乙酸衍生物的喷雾粉末和使用喷雾粉末生产压缩附聚物的方法
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申请号： US13321713申请日： 2010-05-19
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公开(公告)号： US08748366B2公开(公告)日： 2014-06-10
- 发明人: Frank Mrzena , Michael Schoenherr , Robert Heinz , Thomas Heidenfelder
- 申请人： Frank Mrzena , Michael Schoenherr , Robert Heinz , Thomas Heidenfelder
- 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, Spivak, McClelland, Maier & Neustadt, L.L.P.
- 优先权： EP09160717 20090520
- 国际申请： PCT/EP2010/056855 WO 20100519
- 国际公布： WO2010/133617 WO 20101125
- 主分类号： C11D11/02
- IPC分类号： C11D11/02 ; C11D3/33 ; C11D7/32 ; B29B9/00
摘要：
A process for the preparation of a spray-dried powder containing at least one glycine-N,N-diacetic acid compound of a formula MOOC—CHR—N(CH2COOM)2, where R is a C1-12-alkyl and M is an alkali metal, the process including: preparing an aqueous solution containing the glycine-N,N-diacetic acid compound; concurrently passing the aqueous solution and air into a spray-drying apparatus; atomizing the aqueous solution by feeding the aqueous solution onto a rotating disk or by compressing the aqueous solution with a pump to a pressure of ≧20 bar absolute, to obtain fine liquid droplets; and drying the droplets, to obtain the spray-dried powder, where a temperature gradient between the aqueous solution and the air is in a range from 70 to 350° C., and a content of the glycine-N,N-diacetic acid compound in the aqueous solution is ≧84% by weight, based on a total weight of the dry mass.
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