申请人:The United States of America as represented by the Administrator,
公开号:US04159262A1
公开(公告)日:1979-06-26
Triazine compounds and cross-linked polymer compositions are made by heating aromatic nitriles to a temperature in the range of from about 100.degree. C. to about 700.degree. C., and preferably in the range of from about 200.degree. C. to about 350.degree. C. in the presence of a catalyst or mixture of catalysts selected from one or more of the following groups: (A) organic sulfonic and sulfinic acids, (B) organic phosphonic and phosphinic acids, and (C) metallic acetylacetonates, at a pressure in the range of from about atmospheric pressure to about 10,000 p.s.i., and preferably in the range of from about 200 p.s.i. to about 750 p.s.i. Aromatic nitrile-modified (terminated and/or appended) imide, benzimidazole, imidazopyrrolone, quinoxaline, and other condensation type prepolymers or their precopolymers are made which are trimerized with or without a filler by the aforementioned catalytic trimerization process into triaryl-s-triazine ring containing or cross-linked polymeric or copolymeric products useful in applications requiring high thermal-oxidative stability and high performance structural properties at elevated temperatures.
通过在催化剂或多种催化剂的存在下,将芳香族腈加热到约100℃至约700℃的温度范围内,优选在约200℃至约350℃的温度范围内,制备三嗪化合物和交联聚合物组合物。所述催化剂或多种催化剂选自以下一种或多种组:(A)有机磺酸和亚磺酸,(B)有机膦酸和亚膦酸,以及(C)金属丙酮酸盐,在大气压力至约10,000 p.s.i.的压力范围内,优选在约200 p.s.i.至约750 p.s.i.的压力范围内。制备芳香族腈修饰(末端和/或附加)的咪唑、苯并咪唑、咪唑吡啶酮、喹噁啉和其他缩聚型预聚物或其前驱体,这些预聚物通过上述催化三聚化过程与或不与填料三聚化,形成三芳基-s-三嗪环含或交联聚合物或共聚物产品,可用于需要高热氧稳定性和高性能结构特性的应用,如在高温下。