Polyrotaxane-containing solution and use thereof

Details Polyrotaxane-containing solution and use thereof Polyrotaxane-containing solution and use thereof

C - Chemistry, Metallurgy

08

L

C08L 71/02 (2006.01) C08B 37/16 (2006.01)

Patent

CA 2621787

A polyrotaxane-containing solution is provided using a good solvent for polyrotaxanes. In particular, a solution containing a polyrotaxane whose cyclic molecules are a cyclodextrin is provided using a good solvent for the polyrotaxane. The polyrotaxane-containing solution is characterized by comprising: a solvent selected among nitrogenous organic solvents and ionic liquids; and a polyrotaxane dissolved therein. An especially good solvent for polyrotaxanes is: a nitrogenous organic solvent such as N-methylmorpholine N- oxide or a hydrate thereof; a solution in a nitrogenous organic solvent, such as N,N-dimethylacetamide, of a solute which is an alkali metal or alkaline earth metal halide, e.g., lithium chloride; or an ionic liquid such as an N,N'- dialkylimidazolinium salt or an N-alkylpyridinium salt.

L'invention concerne une solution contenant un polyrotaxane obtenue en utilisant un bon solvant pour les polyrotaxanes. En particulier, l'invention concerne une solution contenant un polyrotaxane dont les molécules cycliques sont une cyclodextrine, obtenue en utilisant un bon solvant pour le polyrotaxane. La solution contenant un polyrotaxane est caractérisée en ce qu'elle comprend : un solvant sélectionné parmi des solvants organiques azotés et des liquides ioniques ; et un polyrotaxane dissous dans celui-ci. Un solvant particulièrement bon pour les polyrotaxanes est : un solvant organique azoté tel que le N-oxyde de N-méthylmorpholine ou un hydrate de celui-ci ; une solution dans un solvant organique azoté, tel que le N,N-diméthylacétamide, d'un soluté qui est un halogénure de métal alcalin ou de métal alcalinoterreux, par exemple un chlorure de lithium ; ou un liquide ionique tel qu'un sel de N,N'-dialkylimidazolinium ou un sel de N-alkylpyridinium.

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