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    • 5. 发明申请
    • MODIFIED POLYVINYL ALCOHOL, MODIFIED POLYVINYL ACETAL AND CERAMIC SLURRY COMPOSITION
    • 改性聚乙烯醇,改性聚乙烯醇和陶瓷浆料组合物
    • US20130197154A1
    • 2013-08-01
    • US13824498
    • 2011-09-16
    • Hidehiro YamaguchiYuki IshikawaYasuharu Nagai
    • Hidehiro YamaguchiYuki IshikawaYasuharu Nagai
    • C08F116/06
    • C08F116/06C04B35/4682C04B35/63416C04B35/6342C04B2235/5445C04B2235/6025C08F8/12C08F8/28C08F8/50C08F216/38C08K3/00C08F16/06
    • The present invention provides a modified polyvinyl alcohol enabling to produce polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization while hardly causing reaction inhibition, coloring, and particle coarsening, and a method for producing the modified polyvinyl alcohol. The present invention also provides a modified polyvinyl acetal that is excellent in solubility in a solvent even with a low degree of polymerization, and has high elasticity, mechanical strength, and a film forming property. The present invention further provides a method for producing the modified polyvinyl acetal, a polyvinyl acetal film produced from the modified polyvinyl acetal, a method for producing the polyvinyl acetal film, a ceramic slurry composition, a method for producing the ceramic slurry composition, and a ceramic green sheet. The present invention is a modified polyvinyl alcohol including at least one functional group selected from the group consisting of hydroxyl, aldehyde, carboxyl, and lactone ring groups at a molecular end, and having a degree of saponification of 99.95 mol % or higher and a 1,2-glycol bond content of 1.4 mol % or lower.
    • 本发明提供一种改性聚乙烯醇,其能够生产聚合物缩醛,即使在低聚合反应时溶剂性也优异,同时几乎不引起反应抑制,着色和颗粒粗化,以及改性聚乙烯醇的制备方法。 本发明还提供即使在低聚合度下溶剂性也优异的改性聚乙烯醇缩醛,具有高弹性,机械强度和成膜性。 本发明还提供一种改性聚乙烯醇缩醛的制造方法,由改性聚乙烯醇缩醛制造的聚乙烯醇缩醛膜,聚乙烯醇缩醛膜的制造方法,陶瓷浆料组合物,陶瓷浆料组合物的制造方法以及 陶瓷绿板。 本发明是一种改性聚乙烯醇,其在分子末端具有选自羟基,醛,羧基和内酯环基中的至少一种官能团,皂化度为99.95mol%以上,1 ,2-二醇键含量为1.4摩尔%以下。