C - Chemistry – Metallurgy – 07 – C
Patent
C - Chemistry, Metallurgy
07
C
260/220.2, 260/7
C07C 7/152 (2006.01) C07C 15/067 (2006.01) C08B 37/16 (2006.01)
Patent
CA 2025618
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.-cyclo- dextrin 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.
Chiwa Makoto
Takagi Yosuke
Uemasu Isamu
Agency Of Industrial Science And Technology Ministry Of International Trade And Industry
Ensuiko Sugar Refining Co. Ltd.
Macrae & Co.
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