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    • 78. 发明申请
    • MODIFIED VINYL ALCOHOL POLYMER SOLUTION AND METHOD FOR PRODUCING SAME
    • 改性的乙烯醇聚合物溶液及其生产方法
    • US20140005326A1
    • 2014-01-02
    • US14005662
    • 2012-03-14
    • Shinsuke NiiMasato NakamaeYuta Taoka
    • Shinsuke NiiMasato NakamaeYuta Taoka
    • C08L29/04
    • C08L29/04C08F8/12C08F216/06C09D129/04C08F218/08C08F220/54C08F220/58
    • 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, δd being no less than 13 MPa0.5 and no greater than 18 MPa0.5, δp being no less than 4 MPa0.5 and no greater than 9 MPa0.5, and δh being no less than 9 MPa0.5 and no greater than 13 MPa0.5.
    • 本发明的目的是提供一种改性PVA溶液,即使当具有高疏水性的改性PVA的浓度增加时,也能够调节粘度等物理性能,并提供改性PVA溶液的制造方法。 本发明的改性乙烯醇聚合物溶液包括:改性乙烯醇聚合物; 有机溶剂; 和水,所述改性乙烯醇聚合物:包含具有碳原子数2以上且29以下的烷基的单体单元,所述单体单元的含有百分比为0.05摩尔%以上且不大于 5摩尔%以上,改性乙烯醇系聚合物的皂化度为20摩尔%以上且99.99摩尔%以下,以有机溶剂的Hansen溶解度参数计,deltad为13MPa以上 5和不大于18MPa0.5,deltap不小于4MPa0.5和不大于9MPa0.5,deltah不小于9MPa0.5且不大于13MPa0.5。