会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 152. 发明公开
    • Aqueous compositions comprising blocked isocyanate crosslinking agent
    • Blockiertes Isocyanat-Vernetzungsmittel enthaltendewässrigeZusammensetzungen。
    • EP0083232A1
    • 1983-07-06
    • EP82306950.5
    • 1982-12-24
    • Ford Motor Company LimitedFORD-WERKE AKTIENGESELLSCHAFTFORD FRANCE SOCIETE ANONYME
    • Kordomenos Panagiotis I.
    • C08G18/80C08G18/08C08G18/64C09D5/40C09D3/48
    • C08G18/643C08G18/0814C08G18/8041C08G18/8061C09D5/4496
    • Aqueous coating compositions comprising film forming resin bearing reactive functionality and blocked polyisocyanate crosslinking agent which is at least partially solubilized with organic acid and which is stable at room temperature in the presence of said functinality, but reactive therewith at elevated temperatures. The blocked isocyanate is prepared by

      (A) reacting (i) organic diisocyanate bearing one isocyanate group which is more reactive than the other and (ii) sufficient active hydrogen containing blocking agent to react with substantially all of said more reactive isocyanate groups; and
      (B) reacting hydroxy functional amine bearing at least two hydroxyl groups and at least one tertiary amine nitrogen with sufficient reaction product (A) to react substantially all free or unblocked isocyanate groups of reaction product (A) with hydroxyl groups of said amine.

      Alternatively, the blocked isocyanate is prepared by

      (A) reacting an excess of organic diisocyanate with dihydroxy functional amine containing at least one tertiary nitrogen to form a isocyanate terminated tertiary amine containing intermediate; and
      (B) reacting the intermediate of (A) with sufficient active hydrogen containing blocking agent to react with substantially all of the terminal isocyanate groups of the intermediate.
    • Compsn。 包括(1)具有反应性官能团的成膜树脂和(2)能够在升高的温度下与反应性官能团反应的封端多异氰酸酯交联剂(I)。 改进之处在于(I)是一种二异氰酸酯,其中一个NCO gp。 已经被代理人(II)阻止了。 反应性氢和其他NCO gp。 已经与OH gp反应。 的胺(III) 至少两个OH gps。 和至少一个叔氮; 和(I)至少部分溶解或分散在水溶液中。 涂料组合物 通过使至少一部分叔丁基酯质子化的有机酸。 (I)的N原子。 compsn。 用于通过电沉积施加到基底阴极。 通过使用(I) 电离性gps。 (由于有机酸使胺N质子化的结果), 由于系统具有更大的载流子,涂层可以以较高的固体形式存在于未反应的分散体的形式中。 (I),仍然保持稳定。 可以实现更高的交联效率,并且可以形成能够在减少的温度下固化的阴极电沉积体系。