申请人:Dendritic Nanotechnologies Inc.
公开号:EP2385078A1
公开(公告)日:2011-11-09
Dendritic polymers with enhanced amplification and interior functionality are disclosed. These dendritic polymer are made by use of fast, reactive ring opening chemistry (or other fast reactions) combined with the use of branch cell reagants in a controlled way to rapidly and precisely build dendrimer structures, generation by generation, with precise structures with cleaner chemistry, typically single products, lower excesses of reagants, lower levels of dilution, higher capacity method, more easily scale to commercial dimensions, new ranges of materials, and lower cost. The dendrimer composition prepared have novel internal functionality, greater stability, e.g., thermal stability and less or no reverse Michaels reaction, and which reach encapsulation surface densities at lower generations. Unexpectedly, these reactions of poly-functional branch cell reagents with polyfunctional surfaces do not create gelled materials. Such dendritic polymers are useful as demulsifiers for oil/water emulsions, wet strength agents in the manufacture of paper, proton scavengers, calibration standards for electron microscopy, making size selective membranes, and agents for modifying viscosity in aqueous formulations such as paint. When these dendritic polymers have a carried material associated with their surface and/or interior, then these dendritic have additional properties due to the unique characteristics of the dendritic polymer.
本发明公开了具有增强放大和内部功能的树枝状聚合物。这些树枝状聚合物是通过使用快速、活性开环化学反应(或其他快速反应),结合使用分支细胞试剂,以受控方式快速、精确地逐代构建树枝状聚合物结构,其结构精确,化学反应更纯净,通常是单一产物,试剂过量较少,稀释程度较低,方法容量较大,更容易扩展到商业尺寸,材料范围较新,成本较低。制备的树枝状聚合物组合物具有新颖的内部官能度、更高的稳定性(如热稳定性)和更少或没有反向 Michaels 反应,并能以更低的代数达到封装表面密度。意想不到的是,这些多官能团分支细胞试剂与多官能团表面的反应不会产生胶凝材料。这种树枝状聚合物可用作油/水乳剂的破乳剂、造纸过程中的湿强度剂、质子清除剂、电子显微镜的校准标准、尺寸选择膜,以及涂料等水性配方中的粘度调节剂。当这些树枝状聚合物的表面和/或内部带有载体材料时,由于树枝状聚合物的独特特性,这些树枝状聚合物就会具有额外的性能。