申请人:The United States of America as represented by the Administrator of the
公开号:US04061856A1
公开(公告)日:1977-12-06
Triazine compounds and cross-linked polymer compositions are made by heating aromatic nitriles to a temperature in the range of from about 100.degree.0 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.
通过在催化剂或催化剂混合物的存在下,将芳香族腈加热到大约100℃至700℃的温度范围内,最好在大约200℃至350℃的温度范围内,制备三嗪化合物和交联聚合物组合物。所述催化剂或催化剂混合物选择自以下一组或多组:(A)有机磺酸和亚磺酸,(B)有机膦酸和膦酸,以及(C)金属乙酰丙酮酸盐,并在大约大气压到大约10,000磅/平方英寸的压力范围内,最好在大约200磅/平方英寸到大约750磅/平方英寸的压力范围内进行。制备芳香族腈修饰(终止和/或附加)的咪唑酰亚胺、苯并咪唑、咪唑吡啶酮、喹噁啉和其他缩合型预聚体或其前体聚合物,这些预聚体通过上述催化三聚化过程与或不与填料三聚化为三芳基-s-三嗪环含有或交联的聚合物或共聚物产品,适用于需要高热氧稳定性和高性能结构特性的应用,可在高温下使用。