Modified vinyl alcohol polymer solution and method for producing same

Abstract

An object of the present invention is to provide a modified PVA solution that enables physical properties such as viscosity to be adjusted even when a concentration of the modified PVA having high hydrophobicity is increased, and to provide a method for producing the modified PVA solution. The modified vinyl alcohol polymer solution of the present invention comprises: a modified vinyl alcohol polymer; an organic solvent; and water, the modified vinyl alcohol polymer: comprising a monomer unit having an alkyl group having a carbon number of 2 or greater and 29 or less;, and having a percentage content of the monomer unit being no less than 0.05 mol % and no greater than 5 mol %, and a degree of saponification of the modified vinyl alcohol polymer being no less than 20 mol % and no greater than 99.99 mol %, and in terms of Hansen solubility parameters of the organic solvent, δd being no less than 13 MPa0.5 and no greater than 18 MPa0.5, δp being no less than 4 MPa0.5 and no greater than 9 MPa0.5, and δh being no less than 9 MPa0.5 and no greater than 13 MPa0.5.

Dependencies are inferred from the claim text.