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公开(公告)号：US3824253A
公开(公告)日：1974-07-16
申请号：US21322071
申请日：1971-12-28
Applicant: DAICEL LTD
Inventor： UEMATSU E , ISHII K , TSUJI K , MAEHARA M , TAKAHASHI H
IPC: C07D327/04 , C07D331/04 , C07D89/06
CPC classification number: C07D331/04
Abstract: A PROCESS FOR PREPARING PROPANE SULTONE FROM A HYDROXYPROPANE SULFONIC ACID CONTAINING SOLUTION WHICH IS CHARACTERIZED BY CONCENTRATING THE SOLUTION UNTIL THE CONCENTRATION RATIO WITHIN A SPECIFIC RANGE IS REACHED AND THEN SUBJECTING THE OBTAINED CONCENTRATED SOLUTION TO A CONTINUOUS DISTILLATION IN AN AGITATED-FILM EVAPORATOR UNDER A HIGH VACUUM OF LOWER THAN 15 MM. HG TO DISTILL AND RECOVER PROPANE SULTONE.
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公开(公告)号：US3758563A
公开(公告)日：1973-09-11
申请号：US3758563D
申请日：1967-06-21
Applicant: DAICEL LTD
CPC classification number: B30B11/228 , A23L3/3508 , B30B11/201 , C07C57/10
Abstract: A granular potassium sorbate, for use as a food and drink preserving material, which is higher than powdery potassium sorbate in apparent specific gravity, is very easily soluble and is sufficiently hard as not to break in handling. A process for producing the above-mentioned granular potassium sorbate by properly wetting powdery potassium sorbate with water alone or with a mixture of water and an organic solvent, molding it with particular types of extruding granulators under proper conditions and drying it.
Abstract translation: 用作食用和饮料保存材料的颗粒状山梨酸钾比表观比重高的粉状山梨酸钾非常容易溶解，并且足够坚硬，不会在处理中破裂。 通过用水单独或与水和有机溶剂的混合物适当地润湿粉末状山梨酸钾，通过在适当条件下将其与特定类型的挤出造粒机一起成型并干燥来生产上述颗粒状山梨酸钾的方法。
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