公开(公告)号：US5200517A

公开(公告)日：1993-04-06

申请号：US683409

申请日：1991-04-10

申请人： Isamu Uemasu ,  Yosuke Takagi ,  Makoto Chiwa

发明人： Isamu Uemasu ,  Yosuke Takagi ,  Makoto Chiwa

IPC分类号： C07C7/152

CPC分类号： C07C7/152

摘要： A mixture of xylene isomers or a mixture of a xylene isomer(s) and ethylbenzene is brought into contact with at least one specific substituted .alpha.-cyclodextrin to form an inclusion complex(es) of the substituted .alpha.-cyclodextrin with a xylene isomer or ethylbenzene included therein, from which the xylene isomer(s) and/or ethylbenzene is then extracted to isolate, or separate, the same. Inclusion-complexing agents usable in isolation, or separation, of the xylene isomer(s) and/or ethylbenzene are substituted .alpha.-cyclodextrin in the form of .alpha.-cyclodextrin having the hydrogen atom of at least one hydroxyl group thereof substituted with at least one member selected from the group consisting of a glucosyl group, a maltosyl group, maltooligosaccharide residues, a hydroxyethyl group, a hydroxypropyl group, a methyl group, a sulfonic group, alkylenesulfonic groups, and carboxyalkyl groups.

摘要翻译： 二甲苯异构体或二甲苯异构体和乙苯的混合物的混合物与至少一种特定的取代的α-环糊精接触以与二甲苯异构体或乙苯形成取代的α-环糊精的包合络合物 其中包括二甲苯异构体和/或乙苯，从而从中提取二甲苯异构体和/或乙苯以分离或分离。 用于分离或分离二甲苯异构体和/或乙苯的包合配合剂是具有至少一个羟基的氢原子被至少一个羟基取代的α-环糊精形式的取代的α-环糊精 选自葡糖基，麦芽糖基，麦芽低聚糖残基，羟乙基，羟丙基，甲基，磺酸基，烷基磺酸基和羧基烷基的成员。

公开(公告)号：US5095173A

公开(公告)日：1992-03-10

申请号：US583427

申请日：1990-09-17

申请人： Isamu Uemasu ,  Yosuke Takagi ,  Makoto Chiwa

发明人： Isamu Uemasu ,  Yosuke Takagi ,  Makoto Chiwa

IPC分类号： C08B37/16 ,  C07C7/152 ,  C07C15/073 ,  C07C15/08

CPC分类号： C07C7/152

摘要： A mixture of xylene isomers or a mixture of a xylene isomer(s) and ethylbenzene is brought into contact with at least one specific substituted .alpha.-cyclodextrin to form an inclusion complex(es) of the substituted .alpha.-cyclodextrin with a xylene isomer or ethylbenzene included therein, from which the xylene isomer(s) and/or ethylbenzene is then extracted to isolate, or separate, the same. Inclusion-complexing agents usable in isolation, or separation, of the xylene isomer(s) and/or ethylbenzene are substitited .alpha.-cyclodextrin in the form of .alpha.-cyclodextrin having the hydrogen atom of at least one hydroxyl group thereof substituted with at least one member selected from the group consisting of a glucosyl group, a maltosyl group, maltooligosaccharide residues, a hydroxyethyl group, a hydroxypropyl group, a methyl group, a sulfonic group, alkylenesulfonic groups, and carboxyalkyl groups.

摘要翻译： 二甲苯异构体或二甲苯异构体和乙苯的混合物的混合物与至少一种特定的取代的α-环糊精接触以与二甲苯异构体或乙苯形成取代的α-环糊精的包合络合物 其中包括二甲苯异构体和/或乙苯，从而从中提取二甲苯异构体和/或乙苯以分离或分离。 可用于分离或分离二甲苯异构体和/或乙苯的包合配合剂是具有至少一个羟基的氢原子被至少一个取代的α-环糊精形式的α-环糊精 选自葡糖基，麦芽糖基，麦芽低聚糖残基，羟乙基，羟丙基，甲基，磺酸基，烷基磺酸基和羧基烷基的成员。

公开(公告)号：US07030237B2

公开(公告)日：2006-04-18

申请号：US10009627

申请日：2000-12-21

申请人： Isamu Uemasu ,  Kozo Hara ,  Hideki Takahashi

发明人： Isamu Uemasu ,  Kozo Hara ,  Hideki Takahashi

IPC分类号： C08B37/16

CPC分类号： C07D215/06 ,  C07B63/00 ,  C07C7/152 ,  C07C17/395 ,  C07C201/16 ,  C07C2602/42 ,  C07C25/02 ,  C07C25/10 ,  C07C205/06 ,  C07C15/08 ,  C07C15/24 ,  C07C13/21 ,  C07C13/39

摘要： In a reaction system having at least two liquid-liquid interfaces between an organic phase of raw material containing a compound(s) to be separated and an aqueous phase of an aqueous solution of inclusion-complexing agent and between that aqueous phase and an organic phase(s) of extraction solvent(s), the compound(s) to be separated is entrapped into the aqueous phase through formation of an inclusion complex(es) of the inclusion-complexing agent with the compound(s), while the compound(s) is entrapped into the organic phase(s) of extraction solvent(s) through dissociation of said inclusion complex(es). The foregoing operation is performed using, for example, a squarish U-shaped tube or an H-shaped tube with bottom plates. Preferred examples of inclusion-complexing agent include highly water-soluble branched cyclodextrins.

公开(公告)号：US5177302A

公开(公告)日：1993-01-05

申请号：US703885

申请日：1991-05-22

申请人： Isamu Uemasu ,  Hideki Takahashi

发明人： Isamu Uemasu ,  Hideki Takahashi

IPC分类号： C07C7/152 ,  C07C17/395 ,  C08B37/00

CPC分类号： C08B37/0015 ,  C07C17/395 ,  C07C7/152

摘要： This invention is concerned with a process for separating isomers of disubstituted benzenes, wherein a mixture of isomers of disubstituted benzenes is contacted with a substituted cyclodextrin to form inclusion complexes, and desired isomers are recovered therefrom in a highly selective manner. The invention also provides substituted cyclodextrins suited for use in the process. Substituted cyclodextrins used in the process can be recovered and used repeatedly.