On the basis of hydrophilic copolymers of N vinylamides⎯N vinylpyrrolidone and N methyl N vinylacetamide⎯that contain carboxylic or activated ester groups, new polymeric β cyclodextrin deriva tives are synthesized via polymer analogous transformations. Their solubility in water depends on the content of β cyclodextrin and the types of hydrophilic and reactive comonomers.
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