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    • 81. 发明授权
    • Process for the preparation of a modified polymer for powder paints
    • 制备用于粉末涂料的改性聚合物的方法
    • US5830943A
    • 1998-11-03
    • US681413
    • 1996-07-23
    • Dirk A. W. Stanssens
    • Dirk A. W. Stanssens
    • C08G85/00C08G18/00C08G18/08C08G18/67C08G18/75C08G18/76C08G59/14C09D5/03C09D163/00C09D175/00C08J3/00C08F8/30C08K3/20C08L75/00
    • C09D5/03C08G18/672C08G18/753C08G18/7621C08G2150/20
    • The invention relates to a process for the preparation of a modified polymer by reaction between a reactive polymer and at least a compound containing two or more functional groups. The polymer, which is solid at room temperature, is mixed, at a temperature at which the viscosity of the polymer is lower than 10000 dPas (measured according to Emila), with a compound containing two or more functional groups in a mixing means for achieving a homogeneous product and the mean residence time and the residence time distribution being chosen so that more than 50% of the reactive groups of the polymer has reacted. As means to make the composition homogeneous use is made of a static mixer.The functional groups of the compound containing two or more functional groups have different reactivities. The invention also relates to a binder composition, which comprises the modified polymer thus obtained and a crosslinker.
    • 本发明涉及通过反应性聚合物与至少含有两个或多个官能团的化合物之间的反应制备改性聚合物的方法。 在室温下固体的聚合物在聚合物的粘度低于10000dPas(根据Emila测量)的温度下与在混合装置中含有两个或多个官能团的化合物混合,以实现 均匀的产物,并且选择平均停留时间和停留时间分布,使得多于50%的聚合物的反应性基团已经反应。 作为使组合物均匀使用的方法由静态混合器制成。 含有两个或多个官能团的化合物的官能团具有不同的反应性。 本发明还涉及粘合剂组合物,其包含由此获得的改性聚合物和交联剂。