| 摘要 |
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, ´d being no less than 13 MPa 0.5 and no greater than 18 MPa 0.5 , ´p being no less than 4 MPa 0.5 and no greater than 9 MPa 0.5 , and ´h being no less than 9 MPa 0.5 and no greater than 13 MPa 0.5 . |
