METHOD OF DETERMINING ELEMENT COMPOSITION OF POLYMERS AND OLIGOMERS BASED ON 3,3-BIS(AZIDOMETHYL) OXETANE (BAMO) BY METHOD OF IR-SPECTROSCOPY Russian patent published in 2015 - IPC G01N21/35 

FIELD: chemistry.

SUBSTANCE: invention relates to physical-chemical analysis and can be used in determination of element composition of polymers and oligomers based on 3,3-bis(azidomethyl) oxetane (BAMO) by method of IR-spectroscopy. Method of determining element composition of polymers and oligomers based on 3,3-bis(azidomethyl) oxetane (BAMO) consists in the following: determination of element composition of BAMO-based oligomers is carried out by optic densities of bands of absorption of IR-spectrum of samples in form of film, prepared from oligomer melt or its solution in dimethylformamide, in region 400-4000 cm^-1, which conditions content of nitrogen, carbon, hydrogen, oxygen and chlorine in analysed samples. Determination is carried out by intensity of bands of absorption of N₃-group, CCl-groups with respect to optic densities of CH₂- or C-O-C-groups, with nitrogen being determined by graph showing dependence of the value of ratio of N₃ band optic density to band COC optic density on content of nitrogen in oligomer, carbon is determined by graph of dependence of the value of ratio of N₃ band optic density to band COC optic density on content of nitrogen and carbon, hydrogen carbon is determined by graph of dependence of the value of ratio of N₃ band optic density to band CH₂ optic density on ratio of nitrogen and hydrogen content, oxygen is determined by graph of dependence of the value of ratio of N₃ band optic density to COC band optic density on ratio of nitrogen and oxygen content, chlorine is determined by graph of dependence of the value of ratio of CCl band optic density to CH₂ band optic density on residual chlorine content.

EFFECT: extension of assortment of determined groups.

7 dwg, 1 tbl