A Synthesis of Poly(2,4-Perfluoroalkylene-6-Perfluoroalkyltriazine)S

Autor:	Edwin Dorfman, William E Emerson, Russell L. K. Cakr, C. Thomas Bean
Rok vydání:	1966
Předmět:	chemistry.chemical_classification Polymers and Plastics Chemistry Condensation Polymer Decomposition Ammonia chemistry.chemical_compound Polymerization Polymer chemistry Materials Chemistry Organic chemistry Reactivity (chemistry) Thermal stability Triazine
Zdroj:	Rubber Chemistry and Technology. 39:1175-1177
ISSN:	1943-4804 0035-9475
DOI:	10.5254/1.3547126
Popis:	By thermal cyclodeamination reactions, perfluoroalkyleneimidines and perfluoroalkylamidines have been polymerized to give crosslinked triazine compositions. This reaction involves condensation of the reactants with elimination of ammonia and is illustrated in the formation of I. The amidines and imidines were prepared by the facile addition of ammonia to perfluoroalkane nitriles. Where the mono- and difunctional reactants were of comparable reactivity, essentially random condensations occurred so that gelled polymers were obtained. Properties of these gels varied, depending upon the reactant ratios used, from rather weak, gummy material to tougher inelastic polymers. Tensile strengths observed with these polymers generally ranged from 100 to 500 psi at about 100 per cent elongation. The triazine gels exhibited interesting thermal stability, showing no rapid decomposition up to 420° C; it was thought that with the discovery of a synthesis which would give linear, ungelled, triazine polymer that polymers having improved physical properties might be obtained.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::52bbe9d65298e5276a6414b0967e83af https://doi.org/10.5254/1.3547126 Zobrazit plný text záznamu