发明名称 |
PREPARATION OF FREE FLOWING GRANULES OF METHYGLYCINE DIACETIC ACID |
摘要 |
The present invention concerns a process for the preparation of free flowing granules of low hygroscopicity of one or more methylglycine diacetic acid (MGDA) salts, of the formula wherein R = CH3 and M is hydrogen, alkali metal, alkaline earth metal, ammonium or substituted ammonium in the appropriate stoechiometric amounts, by a process comprising the steps of i) heating a concentrated slurry comprising methylglycine diacetic acid (MGDA) and/or any salts thereof, the slurry having a solids content content in the range of 45% to 70% and suitably in the range from 50% to 70%, and a moisture content of 30% up to 55%, and suitably between 30% and 50%, to a temperature in the range of 50 to 120°C, preferably to about 80°C, and ii) spray granulating said slurry, using an air inlet temperature of 120°C or less. |
申请公布号 |
WO2009103822(A1) |
申请公布日期 |
2009.08.27 |
申请号 |
WO2009EP53781 |
申请日期 |
2009.03.31 |
申请人 |
UNILEVER NV;UNILEVER PLC;HINDUSTAN UNILEVER LIMITED;EUSER, HUIG;JANSSENS, JEAN-PAUL;MOLL, ROBERT JAN;SONJON, JEROME GEORGES MICHEL |
发明人 |
EUSER, HUIG;JANSSENS, JEAN-PAUL;MOLL, ROBERT JAN;SONJON, JEROME GEORGES MICHEL |
分类号 |
C07C227/40;C07C229/16;C11D3/33 |
主分类号 |
C07C227/40 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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