A crystallizable poly(2,5-di-substituted-1, 4-phenylene oxide) and a method of preparing the same
申请人:Secretary of Agency of Industrial Science and Technology
公开号:EP1029882A2
公开(公告)日:2000-08-23
There is disclosed a crystallizable poly(2,5-di-substituted-1,4-phenylene oxide), which exhibits an exothermic peak for crystallization of not less than 5 J/g at 150°C or over when cooled after melting, and/or an endothermic peak, at the time of melting of crystals thereof, of not less than 5 J/g at 150°C or over when re-heated after cooling of the melt, and which comprises a recurring unit of the following formula (I), and a method of preparing the same by polymerization of a 2,5-di-substituted-phenol of the following formula (II) by use of a copper complex catalyst made of a tridentate ligand of which nitrogen atoms coordinate to a copper atom in coexistence with oxygen:
wherein R1's independently represent a hydrocarbon group or a substituted hydrocarbon group, and they may be the same or different. The crystallizable poly(2,5-di-substituted-1,4-phenylene oxide) is able to provide a melt molding which has a reduced degree of coloration and good heat resistance.
本发明公开了一种可结晶的聚(2,5-二取代-1,4-苯基氧化物),其在熔化后冷却时,在 150°C 或以上温度下显示出不小于 5 焦耳/克的结晶放热峰,和/或在熔体冷却后重新加热时,在其晶体熔化时,在 150°C 或以上温度下显示出不小于 5 焦耳/克的内热峰、包括下式(I)的重复单元,以及使用由三叉配位体组成的铜络合物催化剂聚合下式(II)的 2,5-二取代酚的方法,该三叉配位体中的氮原子与铜原子配位,与氧共存:
其中 R1 独立地代表一个烃基或一个取代的烃基,它们可以相同或不同。这种可结晶的聚(2,5-二取代-1,4-苯基氧化物)能够提供着色程度低、耐热性好的熔模。