Invention Grant
- Patent Title: Method for producing a crystalline solid from glycine-N, N-diacetic acid derivatives with sufficiently reduced hygroscopicity
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Application No.: US15096678Application Date: 2016-04-12
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Publication No.: US09751829B2Publication Date: 2017-09-05
- Inventor: Andreas Baranyai
- Applicant: BASF SE
- Applicant Address: DE Ludwigshafen
- Assignee: BASF SE
- Current Assignee: BASF SE
- Current Assignee Address: DE Ludwigshafen
- Agency: Oblon, McClelland, Maier & Neustadt, L.L.P.
- Priority: DE102009038951 20090826
- Main IPC: C11D3/33
- IPC: C11D3/33 ; C07C229/16 ; C07C229/76 ; C07C227/42 ; C11D7/32
Abstract:
The present invention relates to a process for preparing a crystalline solid from glycine-N,N-diacetic acid derivatives (e.g., MGDA) of sufficiently low hygroscopicity, which is characterized in that at least one crystalline compound of the formula I is introduced as seed, and a spray granulation is carried out with at least one compound of the formula I, preferably followed by a heat treatment.
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