METHOD FOR PURIFYING POLYROTAXANE AND METHOD FOR PRODUCING POLYROTAXANE

• Main Authors: ANDO SHOTA, NORITOMI TAKAKO, MAYUMI KOICHI, ITO KOZO
• Format: Patent
• Language: English; Japanese
• Published: 23.06.2023
• Subjects: CHEMISTRY; COMPOSITIONS BASED THEREON; MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS; METALLURGY; ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP

To provide a method for purifying polyrotaxane and a method for producing polyrotaxane which enable easy production of polyrotaxane in a short time with high purity in a high yield.SOLUTION: A method for purifying polyrotaxane includes the following steps (I) and (II): (I) a step of adding a meal normal salt to an aqueous liquid containing polyrotaxane in which straight chain molecules penetrate through an opening of cyclic molecules and water, so that the polyrotaxane forms a phase insoluble in the aqueous liquid, in which the cyclic molecule includes at least one selected from the group consisting of α-cyclodextrin, β-cyclodextrin, and γ-cyclodextrin, and (II) a step of recovering the polyrotaxane forming the phase insoluble in the aqueous liquid.SELECTED DRAWING: Figure 4 【課題】簡易かつ短時間でポリロタキサンが高純度及び高収率で得られるポリロタキサンの精製方法及び製造方法を提供する。【解決手段】以下の工程（Ｉ）及び（II）を含むポリロタキサンの精製方法。（Ｉ）直鎖状分子が環状分子の開口部を貫通してなるポリロタキサンと水とを含む水性液に、前記水性液に不溶な相をポリロタキサンが形成するように、金属正塩を添加する工程であって、前記環状分子は、α－シクロデキストリン、β－シクロデキストリン、及びγ－シクロデキストリンからなる群から選ばれる少なくとも１種を含む工程（II）前記水性液に不溶な相を形成するポリロタキサンを回収する工程【選択図】図４