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1. 发明授权

US06407227B1 Process for the crystallization of lactitol 有权
标题翻译：乳糖醇结晶的方法
公开(公告)号：US06407227B1
公开(公告)日：2002-06-18
申请号：US09380434
申请日：1999-12-06
申请人： Juha Nurmi , Miika Kaira
发明人： Juha Nurmi , Miika Kaira
IPC分类号： C07H108
CPC分类号： C07H15/04
摘要： The present invention relates to a process for the production of structurally pure lactitol crystal forms selected from the group consisting of anhydrous lactitol, lactitol monohydrate, lactitol dihydrate and lactitol trihydrate. The crystallization is performed by cooling a lactitol solution from a temperature at or slightly below the highest temperature of the stability area of the respective crystalline lactitol form to a temperature at or slightly above the lowest temperature of the stability area of said crystalline lactitol form, said stability areas being defined, respectively, within the temperature limits of 100° C. and 0° C. by the intersections of the solubility lines shown in FIG. 1, and by maintaining the supersaturation of said lactitol solution at a level of 1 to 8% (w/w) above the solubility line of the respective lactitol form crystallizing in said area.
摘要翻译：本发明涉及一种制备选自无水乳糖醇，乳糖醇一水合物，乳糖醇二水合物和乳糖醇三水合物的结构纯的乳糖醇晶体形式的方法。通过将乳糖醇溶液从相应的结晶乳糖醇形式的稳定区域的最高温度或稍低于所述结晶乳糖醇形式的稳定区域的最高温度的温度冷却至所述结晶乳糖醇形式的稳定区域的最低温度或稍高于所述结晶乳糖醇形式的稳定区域的温度来进行结晶，所述稳定区域分别在图1所示的溶解度线的交点处于100℃和0℃的温度范围内。并且通过将所述乳糖醇溶液的过饱和度保持在高于所述区域中结晶的各个乳糖醇形式的溶解度线上1至8％（w / w）的水平。

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