申请人:The United States of America as represented by the United States
公开号:US05198551A1
公开(公告)日:1993-03-30
The present invention provides (1) curable polyamide monomers represented by the formula: R.sup.1 -A.sup.1 -B.sup.1 -A.sup.2 -B.sup.2 -A.sup.3 -R.sup.2 where R.sup.1 and R.sup.2 are radicals selected from the group consisting of maleimide, substituted maleimide, nadimide, substituted nadimide, ethynyl, and (C(R.sup.3).sub.2).sub.2 where R.sup.3 is hydrogen with the proviso that the two carbon atoms of (C(R.sup.3).sub.2).sub.2 are bound on the aromatic ring of A.sup.1 or A.sup.3 to adjacent carbon atoms, A.sup.1 and A.sup.3 are 1,4-phenylene and the same where said group contains one or more substituents selected from the group consisting of halo, e.g., fluoro, chloro, bromo, or iodo, nitro, lower alkyl, e.g., methyl, ethyl, and propyl, lower alkoxy, e.g., methoxy, ethoxy, or propoxy, and fluoroalkyl or fluoroalkoxy, e.g., trifluoromethyl, pentafluoroethyl and the like, A.sup.2 is selected from the group consisting of 1,4-phenylene, 4,4'-biphenyl, 2,6-naphthylene and the same where said groups contain one or more substitutents selected from the group consisting of halo, e.g., fluoro, chloro, bromo, or iodo, nitro, lower alkyl, e.g., methyl, ethyl, and propyl, lower alkoxy, e.g., methoxy, ethoxy, or propoxy, and fluoroalkyl or fluoroalkoxy, e.g., trifluoromethyl, pentafluoroethyl and the like, and B.sup.1 and B.sup.2 are selected from the group consisting of --C(O)--N(H)-- and --N(H)--C(O)--, (2) thermoset polyamide compositions comprised of cured segments derived from monomers represented by the formula: R.sup.1 -A.sup.1 -B.sup.1 -A.sup.2 -B.sup.2 -A.sup.3 -R.sup.2 as described above, and curable blends of at least two of the polyamide monomers and (4) processes of preparing the curable polyamide monomers.
本发明提供了(1)由以下式表示的可固化聚酰胺单体:R.sup.1 -A.sup.1 -B.sup.1 -A.sup.2 -B.sup.2 -A.sup.3 -R.sup.2,其中R.sup.1和R.sup.2是从马来酰亚胺,取代马来酰亚胺,那二酰亚胺,取代那二酰亚胺,乙炔和(C(R.sup.3).sub.2).sub.2等基团中选择的基团,其中R.sup.3是氢,但须注意(C(R.sup.3).sub.2).sub.2的两个碳原子与A.sup.1或A.sup.3的芳香环上的相邻碳原子结合,A.sup.1和A.sup.3是1,4-苯撑基,所述基团中包含来自卤素,如氟,氯,溴或碘,硝基,低烷基,如甲基,乙基和丙基,低烷氧基,如甲氧基,乙氧基或丙氧基,和氟烷基或氟烷氧基,如三氟甲基,五氟乙基等的一个或多个取代基,A.sup.2选择自1,4-苯撑基,4,4'-联苯,2,6-萘撑基等基团,所述基团中包含来自卤素,如氟,氯,溴或碘,硝基,低烷基,如甲基,乙基和丙基,低烷氧基,如甲氧基,乙氧基或丙氧基,和氟烷基或氟烷氧基,如三氟甲基,五氟乙基等的一个或多个取代基,以及B.sup.1和B.sup.2选择自--C(O)--N(H)--和--N(H)--C(O)--,(2)由上述所述的单体衍生的固化片段组成的热固性聚酰胺组合物,以及至少两种聚酰胺单体的可固化混合物和(4)制备可固化聚酰胺单体的方法。