| abstract |
The present invention provides a modified vinyl alcohol polymer, which can be used to obtain a resin with the characteristics of less coarse particles in the resin particles. The modified vinyl alcohol polymer of the present invention has: a polyoxyalkylene unit, containing a part represented by the general formula (I), and this part is only connected to the polyvinyl alcohol chain via ether bonds and/or carbon-carbon bonds Bonding; and organic acid units bonded to the polyvinyl alcohol chain; relative to the total number of moles of monomer units constituting the polyvinyl alcohol chain of the modified vinyl alcohol polymer, bonding to the aforementioned polyoxyalkylene unit The ratio of the number of moles of the aforementioned monomer units is 0.01 mol% to 5 mol%, and relative to the total number of moles of the monomer units constituting the polyvinyl alcohol chain of the modified vinyl alcohol polymer, the organic acid unit The ratio of the number of moles is 0.1 mol% to 10 mol%. |