Organic compounds -- part of the class 532-570 series – Organic compounds – Four or more ring nitrogens in the bicyclo ring system
Patent
1974-10-10
1977-12-06
Ford, John M.
Organic compounds -- part of the class 532-570 series
Organic compounds
Four or more ring nitrogens in the bicyclo ring system
260 2R, 526193, 526225, C07D25124
Patent
active
040618560
ABSTRACT:
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.
REFERENCES:
patent: 3060179 (1962-10-01), Toland
patent: 3164555 (1965-01-01), Karguin et al.
patent: 3470176 (1969-09-01), Zollinger
patent: 3502579 (1970-03-01), Johns et al.
patent: 3518264 (1970-06-01), Beears
patent: 3809693 (1974-05-01), Miller
Ford John M.
Mackin J. A.
Manning John R.
Musial N. T.
The United States of America as represented by the Administrator
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