Catalytic processes for the controlled polymerization of free radically (co)polymerizable monomers and functional polymeric systems prepared thereby
    1.
    发明授权
    Catalytic processes for the controlled polymerization of free radically (co)polymerizable monomers and functional polymeric systems prepared thereby 有权
    自由基(共)可聚合单体和由此制备的官能聚合物体系的受控聚合的催化方法

    公开(公告)号:US07825199B1

    公开(公告)日:2010-11-02

    申请号:US09534827

    申请日:2000-03-23

    IPC分类号: C08F4/00 C08F4/44 C08F4/06

    摘要: Further improvements have been made in processes for controlled polymerization of free radically (co)polymerizable monomers mediated by a transition metal complex participating in a redox reaction which involves transfer of a radically transferable atom or group to and from an initiator or dormant polymer and the growing active polymer chain ends. Two improvements involve the choice of counterion in the transition metal complex. In one improvement the transition metal is held in close conjunction with a solid support through interaction with a counterion directly attached to the support. This cognition also allows for improvements in catalyst utilization including catalyst recovery and recycle. In another improvement, particularly suitable for controlled polymerization of certain monomers with an expanded range of transition metals, the function of counterion and ligand in the development of the transition metal based catalyst is superseded by use of salt containing a soluble organic counterion. These and other process improvements have been employed to prepare an extended range of novel polymeric materials and novel processes for the preparation of functional polymers including a novel catalytic Atom Transfer Coupling Reaction.

    摘要翻译: 在由参与氧化还原反应的过渡金属络合物介导的自由基(共)可聚合单体的控制聚合方法中进行了进一步的改进,其涉及将可自由基转移的原子或基团转移到引发剂或休眠聚合物和从引发剂或休眠聚合物转移,并且生长 活性聚合物链末端。 两个改进涉及在过渡金属络合物中选择抗衡离子。 在一个改进中,通过与直接连接到载体上的抗衡离子相互作用,过渡金属与固体支持物紧密结合。 这种认知还允许催化剂利用率的改善,包括催化剂回收和再循环。 在另一个改进中,特别适用于具有扩展范围的过渡金属的某些单体的受控聚合,通过使用含有可溶性有机抗衡离子的盐来代替在过渡金属基催化剂的开发中的抗衡离子和配体的功能。 已经采用这些和其它方法改进来制备扩展范围的新型聚合物材料和用于制备功能性聚合物的新方法,包括新的催化原子转移偶联反应。