олігомер

The oligomerization in solution and suspension oligomerization of the fraction C9 of liquid by-products of pyrolysis of diesel fuel is initiated by 2- (third-butylperoxymethylamineo) acetate acid have been studied. The nature of the effect of oligomerization, the concentration of the initiator, the temperature and duration of the reaction to the output and the physicochemical characteristics of the obtained oligomers were clarified. The optimal technological parameters of the process of oligomerization of the fraction C9 were selected.

При піролізі вуглеводневої сировини на етиленових установках утворюються значні кількості рідких побічних продуктів. На основі фракції С9 рідких побічних продуктів піролізу можливим є синтез вуглеводневих смол, що використовуються як плівкоутворювачі у антикорозійних лако-фарбових покриттях. Використання низькотемпературної емульсійної олігомеризації дозволяє спростити виділення цільового продукту та проводити синтез при невисоких тривалостях і температурах.

We have studied the possibility of peroxy oligomers synthesis by chemical modification of epoxy resins with tert-butylperoxymethanol or diepoxy compounds telomerization with glycols in the presence of trifluorine boron using tert-butylperoxymethanol as telogen. The reaction conditions have been determined and synthesis procedures have been developed. The structures of synthesized products were proved by chemical, IR- and PMR-spectroscopic investigations.

Among the activities done under the present work are the following: - study of the kinetic regularities of the polymerization of new heterocyclic monomers and oligomers obtained from interaction between furfurylglycidyl ether and aliphatic monocarboxylic acids (saturated and unsaturated); -determination of the polymerization mechanism in the absence of complex onium catalysts; -determination of the structure and composition of monomeric and polymeric compounds by using chemical and physicochemical techniques and 1Н-NМR spectral analysis.

A series of polymer alloys based on different compositions of Nylon 6,6 oligomers (NYL66Oґs) and epoxy resin have been prepared. The oligomer was extracted from the waste residues of the industrial production of nylon 6,6 and was dissolved in the epoxy resin. The mixture was crosslinked at 333 K using dodecenylsuccinic anhydre (DDSA) as a curing agent. The tensile strength and flexural modulus were found to increase with the addition of NYLO66O up to a maximum value of 2 wt % oligomer content.

The possibility of peroxy oligomer synthesis has been studied by three methods: telomerization of diepoxy derivatives of ethylene glycol or Bisphenol A using 1,2-epoxy-3-tert-butyl peroxypropane as telogen, modification of phenol-formaldehyde resins by 1,2-epoxy-3-tert-butyl peroxypropane and polycondensation of phenol containing –O–O– bonds with formaldehyde. The peroxy oligomers obtaining conditions have been established and 7 new oligomers with peroxy groups have been synthesized. The structures of synthesized oligomers have been verified by chemical and spectral methods.

Розглянуті методи одержання олігомерів (полімерів) з кінцевими гідроксильними групами. Особлива увага приділена синтезу гідроксилвмісних олігомерів на основі епоксидних смол , які у своїх молекулах крім вільних первинної та вторинної гідроксильних груп, містять іншу функційну групу, зокрема, епоксидну, пероксиду, карбоксильну чи акрилатну.