Method for preparing norbornene based addition polymer containing ester or acetyl functional group
申请人:——
公开号:US20040254318A1
公开(公告)日:2004-12-16
The present invention relates to a method for preparing a cyclic olefin polymer by addition polymerization, and more particularly to a method for preparing a norbornene-based addition polymer, which comprises a step of contacting a norbornene-based monomer having an ester or acctyl group with a catalyst system comprising: a Group X transition metal compound; a compound comprising a neutral Group XV electron donor ligand having a cone angle of at least 160°; and a salt capable of offering an anion that can be weakly coordinated to the transition metal, in solvent. The norbornene-based addition polymer having an ester or acetyl group according to the present invention is transparent, has superior adhesivity and a low dielectric constant, and it generates no byproducts when attached to metal. Therefore, it can be used as an optical film, a retardation film, a protection film for a polarizer POFs (plastic optical fiber), PCBs (printed circuit board), or insulators of electronic devices.
本发明涉及一种通过加成聚合制备环烯基聚合物的方法,更具体地涉及一种制备基于诺伯烯的加成聚合物的方法,其中包括以下步骤:将具有酯基或乙酰基的诺伯烯基单体与催化剂体系接触,该催化剂体系包括:X族过渡金属化合物;包含一个具有至少160°锥角的中性XV族电子给体配体的化合物;以及一种能够提供能够弱配位于过渡金属的阴离子的盐,在溶剂中进行反应。本发明提供的具有酯基或乙酰基的诺伯烯基加成聚合物具有透明性,具有优异的粘附性和低介电常数,当附着于金属时不会产生副产物。因此,它可以用作光学膜、减速膜、偏振器POFs(塑料光纤)的保护膜、PCBs(印刷电路板)或电子器件的绝缘体。