FLAME RETARDANTS FOR WOOD-BASED PRODUCTS OF DESTRUCTION OF COMPLEX ALIPHATIC POLYETHERS ETHANOLAMINES

Abstract

The purpose of this paper is to obtain nitrogen-phosphorus flame retardants for wood based products of degradation of aliphatic polyesters P6 and P9a, as well as the study of their properties. Degradation products were examined by IR spectroscopy, gas-liquid chromatography combined with mass spectrometry, by the results of which they are a mixture consisting of monoethanolamine, glycols and adipic acid diamide. Degradation products were used in the reaction Kabachnik - Fields, amino moiety as a component for the synthesis of a-aminomethylphosphonic aliphatic acid. The reaction mass after phosphorylation containing mixture a-aminomethylphosphonic aliphatic acid was neutralized with aqueous ammonia to pH = 7, to give a mixture of ammonium salts of a-aminomethylphosphonic acids. The resulting solution of ammonium salts of a-aminomethylphosphonic acids was tested as a flame retardant for wood. There were determined the physico-chemical properties for the obtained flame retardant compositions. Initial evaluation of the effectiveness of nitrogen-phosphorus flame retardants based on the degradation products of aliphatic polyesters P6 and P9a by monoethanolamine at the wood samples of 150x60x30 mm was showed their high efficiency.