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    • 8. 发明专利
    • Method for producing methylene-crosslinked polyphenyl polyisocyanate
    • 生产甲基交联聚苯乙烯聚异氰酸酯的方法
    • JP2010120870A
    • 2010-06-03
    • JP2008294631
    • 2008-11-18
    • Nippon Polyurethane Ind Co Ltd日本ポリウレタン工業株式会社
    • KAIGAWA TAKESHIYAMADA SUSUMUMASUDA TAKAHIRO
    • C07C263/10C07C265/04C08G18/76
    • C07C263/10C08G18/7664C08G2101/00C07C265/04
    • PROBLEM TO BE SOLVED: To provide a method for producing a methylene-crosslinked polyphenyl polyisocyanate which achieves sufficient hue improvement while suppressing an amount of hydrogen chloride used. SOLUTION: The method for producing a methylene-crosslinked polyphenyl polyisocyanate includes a phosgenation reaction process for reacting a polymethylene polyphenyl polyamine with phosgene in the presence of an inert solvent; a solvent removal process for removing the inert solvent from the reaction solution obtained by the phosgenation reaction process until the concentration of the inert solvent reaches 5-35 mass%; and a hydrogen chloride introduction process for introducing hydrogen chloride to the reaction solution after the solvent removal process. The reaction temperature is kept at 60-130°C in the phosgenation reaction process, the solvent removal process and the hydrogen chloride introduction process. Consequently, a sufficient hue improvement is achieved while suppressing the amount of hydrogen chloride used. COPYRIGHT: (C)2010,JPO&INPIT
    • 要解决的问题:提供一种制备亚甲基交联的聚苯基多异氰酸酯的方法,其在抑制所用氯化氢的量的同时实现充分的色调改善。 解决方案:亚甲基交联的聚苯基多异氰酸酯的制备方法包括在惰性溶剂存在下使多亚甲基多苯基多胺与光气反应的光气化反应方法; 从通过光气化反应方法获得的反应溶液中除去惰性溶剂直到惰性溶剂的浓度达到5-35质量%的溶剂去除方法; 以及在除去溶剂之后将氯化氢引入反应溶液的氯化氢引入方法。 在光气化反应过程,溶剂去除过程和氯化氢引入过程中,反应温度保持在60-130℃。 因此,在抑制所用氯化氢的量的同时,实现了充分的色调改善。 版权所有(C)2010,JPO&INPIT
    • 10. 发明专利
    • Method for producing isocyanate group-having (meth)acrylate derivative
    • 生产异氰酸酯基(甲基)丙烯酸酯衍生物的方法
    • JP2006232797A
    • 2006-09-07
    • JP2005089258
    • 2005-03-25
    • Showa Denko Kk昭和電工株式会社
    • NOZAWA KANEOMORINAKA KATSUTOSHI
    • C07C263/16C07B61/00C07C263/20C07C265/04
    • C07C263/20C07C263/16C07C265/04
    • PROBLEM TO BE SOLVED: To provide a method for producing an isocyanate group-having (meth)acrylate derivative, by which an isocyanate group-having 3-chloropropionate derivative is dehydrochlorinated in profitable mild conditions to produce the isocyanate group-having (meth)acrylate derivative having a small hydrolysable chlorine residual content in a high yield.
      SOLUTION: This method for producing the isocyanate group-having (meth)acrylate derivative, comprising dehydrochlorinating the isocyanate group-having 3-chloropropionate derivative in the presence of a tertiary nitrogen-having basic nitrogen compound, is characterized in that the tertiary nitrogen of the basic nitrogen compound has at least one group except aromatic ring groups.
      COPYRIGHT: (C)2006,JPO&NCIPI
    • 待解决的问题:提供一种具有异氰酸酯基的(甲基)丙烯酸酯衍生物的制备方法,其中在有利的温和条件下将含有异氰酸酯基的3-氯丙酸酯衍生物脱氯化氢以产生具有异氰酸酯基团的(甲基)丙烯酸酯衍生物 甲基)丙烯酸酯衍生物,高产率具有小的可水解氯残余量。 解决方案:该含异氰酸酯基的(甲基)丙烯酸酯衍生物的制造方法,其特征在于,在具有叔氮的碱性氮化合物的存在下,将含有异氰酸酯基的3-氯丙酸酯衍生物脱氯化氢,其特征在于, 碱性氮化合物的氮除了芳环基之外还具有至少一个基团。 版权所有(C)2006,JPO&NCIPI