申请人:EXXON RESEARCH AND ENGINEERING COMPANY
公开号:EP0428351A2
公开(公告)日:1991-05-22
The present invention is predicated on the discovery that quinoline and substituted quinoline derivatives, having substituents in positions other than the 2 and 6 position, undergo polymerization in the presence of tetrahydroquinoline or substituted tetrahydroquinolines and a transition metal sulfide catalyst to produce polymers that have repeating quinoline and substituted moieties.
Thus, in one embodiment of the present invention, there is provided a novel method of preparing polymers having the formula
which comprises contacting a tetrahydroquinoline having the formula
with a quinoline compound having the formula
at elevated temperatures and in the presence of a transition metal sulfide catalyst wherein the metal is selected from Groups VIB, VIIB and VIIIB of the periodic table and mixtures thereof and wherein the Rs (i.e. R₃, R₄, etc.) and the R′s (i.e. R′₃, R′₄, etc.) may be the same or different and are selected from hydrogen, halogen (especially fluoro-, chloro- and bromo-), -NO₂, OH, -NH₂, -SH, -CN and organic substituents. In the above polymer, x and y represent the relative proportion of bracketed structural quinoline or substituted moieties, and n is an integer equal to or greater than 2.
本发明基于以下发现:喹啉和取代喹啉衍生物在 2 位和 6 位以外的位置上具有取代基,在四氢喹啉或取代四氢喹啉和过渡金属硫化物催化剂存在下发生聚合反应,生成具有重复喹啉和取代基的聚合物。
因此,在本发明的一个实施方案中,提供了一种制备具有以下式子的聚合物的新方法
的聚合物,该方法包括将具有式
与式
其中金属选自元素周期表中的 VIB 族、VIIB 族和 VIIIB 族及其混合物,其中 Rs(即R₃、R₄ 等)和 R′s(即 R′₃、R′₄ 等)可以相同或不同,并可选自氢、卤素(尤其是氟、氯和溴)、-NO₂、OH、-NH₂、-SH、-CN 和有机取代基。在上述聚合物中,x 和 y 代表括号内结构喹啉或取代基的相对比例,n 是等于或大于 2 的整数。