| abstract |
(57) [Summary] [Structure] A vinyl alcohol polymer having a hydroxyalkyl group having 2 to 20 carbon atoms in its side chain. [Effect] The vinyl alcohol polymer of the present invention is 5%. The weight loss temperature is higher than 300 ° C, and the thermal stability is excellent. In the case of the conventional water-soluble vinyl alcohol-based polymer, when the surface activity is high, there is a lot of foaming of the aqueous solution, so that there is a problem in industrial use, but the vinyl alcohol-based polymer of the present invention is When it is water-soluble, it has high surface activity, but it is highly industrially useful because the aqueous solution hardly foams. The vinyl alcohol polymer of the present invention is useful as a thermoplastic resin or a dispersion stabilizer. Further, the vinyl alcohol-based polymer of the present invention, Surfactants for various uses, paper coating agents, paper modifiers such as paper internal additives and pigment binders, wood, paper, It can be used for various applications such as adhesives for aluminum foil and inorganic materials, non-woven fabric binders, paints, warp sizing agents, fiber processing agents, sizing agents for hydrophobic fibers such as polyesters, various films, sheets, bottles and fibers. |