| 摘要 |
Provided are a polyoxyalkylene modified vinyl alcohol-based polymer, including a polyoxyalkylene group in side chain, wherein the vinyl alcohol-based polymer has a viscosity average degree of polymerization P of from 200 to 5000, has a degree of saponification of from 20 to 99.99 mol %, and has an amount S of polyoxyalkylene modification of from 0.1 to 10 mol % and a film containing the same. By way of them, a polyvinyl alcohol-based polymer that is soluble in water and also high in viscosity, and a film that is less in a decrease of tensile elastic modulus when conditioned in high humidity, is excellent in water repellency on the film surface, and exhibits water solubility are provided. |
