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Information × Registration Number 0213U001279, 0111U002276 , R & D reports Title Study of oxirane compounds reactions with carbon dioxide in the supercritical state and research of the of properties of multifunctional monomers and based on them polymers popup.stage_title Head Karateev Arnold, Registration Date 07-02-2013 Organization The Kharkov state polytechnical university popup.description2 Objects of study are monomers (five-membered mono-, di-and polycyclic carbonate) obtained by reacting of oxirane compounds with carbon dioxide in the supercritical state.Work purpose is the synthesis of environmentally safe, reactive monomers - cyclic carbonate (CC), on their basis it is possible to obtaine linear and network polymers (polyurethane) with a complex set of special properties without the use of highly toxic original components (isocyanate), such as " nonisocyanates " polyurethane (NPU). Research methods-analytical method of conversion determining of epoxide groups; identification of the obtained CC by the methods of IR and NMR spectroscopy; kinetic studies of the formation of adducts D-A by the interaction between the furan ring with bis-and trimaleimide method of differential scanning calorimetry (DSC); kinetic studies of the model reaction of urethane by CC interaction with primary mono-and diamines by the methods of DSC and IR spectroscopy; determination of thermophysical properties of the NPU by the methods of DSC and derivatography.Results-synthesized experimental batch of furfuryloxypropyl cyclic carbonate (FOPCC); batch of aliphatic and aromatic bismaleimides and trismaleimide. Synthesized experimental batch bis- and three functional adducts Diels-Alder (D-A) with end cyclic carbonate (CC) groups FOPCC reaction with bismaleimide. Synthesized experimental batch bifunctional intermediates for the synthesis of linear polygidroxyurethane (PGU): digidroxyurethane with end furan ring; olihogidroxyurethane with end furan rings; intermediate for the synthesis of crosslinked PGU- three functional digidroxyurethane with end furan groups. Novelty - improved method synthesis FOPCC furfurylglycidyl ether by reaction with CO2 in the supercritical state - a synthesis of optimal parameters (initial pressure of 3.2 MPa CO2, duration - 8 (temperature 90C., In the presence of 2% (by weight) tetraphenilfosfoniy bromide (TFFB ) as a catalyst); - First held FOPCC synthesis under atmospheric pressure at a temperature 90C in the presence of 2% (wt) catalysts: TFFB, tetrabutylamoniy bromide (TBAB) tryetylbenzylamoniy chloride (TEBAX); - Found that the order of the reaction in the presence of carbonation TFFB pressurized CO2 - the first, under atmospheric pressure - the second, and in the presence of TBAB and TEBAX under atmospheric pressure - first; - Found that with increasing content endo isomer increased rigidity of the polymer coating; - The investigated synthesis of retrodiene reaction model adducts D-A: trybromophenilmaleimide with FOPCC and tolilmaleimide with FOPCC. The order of reaction and activation energy. It is established that the structure of adducts D-A did not significantly affect the kinetic parameters of the retrodiene reaction D-A; - First obtained reversible mesh " nonisocyanates " PGU different structure and investigated their modes of reversible's. Product Description popup.authors Корягін А.Г. Корягіна Н.О. Літвінов Д.О. Пантелеєва Л.В. popup.nrat_date 2020-04-02 Close