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    • 4. 发明授权
    • Vinyl hyperbranched polymer with photographically useful end groups
    • 具有摄影有用端基的乙烯基超支化聚合物
    • US06252025B1
    • 2001-06-26
    • US09132045
    • 1998-08-11
    • Jin-Shan WangYanong Wang
    • Jin-Shan WangYanong Wang
    • C08G6112
    • C08G83/005G03C1/04G03C1/8155G03C7/305G03C7/327G03C7/396
    • Photographically useful materials are disclosed comprising a hyperbranched polymer segment and multiple pendant photographically useful groups. Such materials may be prepared by forming an active hyperbranched polymer segment with multiple functionalized end group sites, and reacting the active hyperbranched polymer segment with an active compound comprising a photographically useful group to form a hyperbranched polymer ended with photographically useful groups. The hyperbranched segment may comprise any kind of polymer segment with hyperbranched architecture, and the active end groups may comprise any kind of reactive site. The active hyperbranched polymer may comprise any kind of other functional groups which are located in either backbone or the ends. The hyperbranched polymers containing photographically useful groups obtained in accordance with the invention are particularly advantageous in that they enable polymer structures comprising components exhibiting different photographically useful properties, while maintaining relatively low intrinsic viscosities compared to non-hyperbranched polymers containing photographically useful groups of similar chemical compositions. Additionally, the hyperbranched polymers are advantageous with respect to dendrimer type polymers in that a wide variety of hyperbranched polymer compositions may be synthesized in accordance with commercially acceptable processes.
    • 公开的照相有用材料包括超支化聚合物链段和多个侧视照相用的基团。 可以通过形成具有多个官能化端基位点的活性超支化聚合物链段和使活性超支化聚合物链段与包含照相有用基团的活性化合物反应以形成以照相用的基团结束的超支化聚合物来制备这些材料。 超分支链段可以包括具有超支化结构的任何种类的聚合物链段,并且活性末端基团可以包含任何种类的反应性位点。 活性超支化聚合物可以包含位于骨架或末端中的任何种类的其它官能团。 包含根据本发明获得的具有照相用途基团的超支化聚合物特别有利的是,与含有具有相似化学组成的照相有用基团的非超支化聚合物相比,它们使得包含具有不同照相用性质的组分的聚合物结构同时保持相对低的特性粘度 。 此外,超支化聚合物对于树枝状聚合物型聚合物是有利的,因为可以根据商业上可接受的方法合成多种超支化聚合物组合物。