| abstract |
(57) [Problem] An object of the present invention is to provide a water-soluble vinyl alcohol-based polymer having a poly (oxyalkylene) group in a side chain. An object of the present invention is to provide a compound represented by the general formula (1): (Wherein R 1 represents an alkylene group having 2 to 4 carbon atoms or a substituted alkylene group, R 2 represents a hydrogen atom or an organic residue, X represents hydrogen or an alkali metal atom such as sodium or potassium, and n represents an integer of 1 to 100. This is achieved by a vinyl alcohol polymer containing 0.01 to 15 mol% of a monomer unit having a poly (oxyalkylene) group represented by the formula (1). |