Solid water-disintegrable composite and method for producing same

Abstract

One or more aspects of the present disclosure have an object to provide a novel solid water-disintegrable composite easily disintegrable in room temperature water while containing a polymer compound, such as a polyvinyl alcohol, poorly soluble or insoluble in room temperature water and soluble in hot water. One or more aspects of the present disclosure relate to a solid water-disintegrable composite containing a polymer compound poorly soluble or insoluble in water at 25° C. and soluble in water at 80° C. or higher and a cellulose nanofiber with a sulfate ester group. Another one or more aspects of the present disclosure relate to a method for producing the composite, and the method includes a step of preparing a dispersion liquid containing a solvent, and the polymer compound and the cellulose nanofiber dispersed in the solvent, and a step of removing the solvent from the dispersion liquid to obtain the composite.

Dependencies are inferred from the claim text.