Комплексы солей металлов I-VIII групп с триалкил(арил)фосфатами

Abstract

The reactions of various inorganic salts of metals of groups I-VIII in the Periodic Table with trialkyl(aryl)phosphate compounds obtained new multifunctional complexes. Modern methods of physicochemical analysis studied the laws of complexation reactions. The influence of the nature and molar ratio of the starting trialkyl(aryl)phosphates, metal salts and their crystalline hydrates on the nature of the reactions between them has been revealed. It has been shown that organic phosphates with aromatic radicals are less reactive compared to trialkylphosphates. The presence of crystallization water in metal salts leads to a decrease in the rate of their reactions with trialkyl(aryl)phosphates. The most chemically active with respect to the trialkyl(aryl)phosphate compounds were tin and titanium tetrachlorides. Synthesized metalcomplex compounds were investigated as modifiers of polymer compositions. For polymer compositions, their viability was studied, which was determined by the gelation time and the compatibility of the composition with the metal complex; hardened polymer samples were tested according to standart methods for breaking stress at break, impact strength, elongation, resistance to aggressive chemical substance and fire resistance using the fire tube method. We have developed a method of obtaining epoxy polymers by carrying out two processes – partial polymerization of the epoxy oligomer with solutions of trialkylphosphate complexes with Lewis acids in the corresponding trialkylphosphates at room temperature and the subsequent confirmation of the resulting prepolymer with triethylentetramine at 80 °C. It was revealed that trialkyl(aryl)phosphate complexes of metals are promising catalysts, modifiers and flame retardants for large-capacity polymers.