Modified Phenol-Formaldehyde Resins and their Application in Bitumen-Polymeric Mixtures

Phenol-formaldehyde resins (PhFR) with reactive methacrylate fragments or labile peroxy bonds in the side branches used as a polymeric component of bitumen-polymeric mixtures have been investigated. Taking into account that PhFR with peroxy fragments based on epoxy resin does not described in literature, its synthesis procedure has been developed. The kinetic regularities of the reaction between peroxy derivative of epoxy resin (PDER) and phenol group of PhFR were studied taking the reaction of PDER with phenol as an example.

Study of Phenol-Formaldehyde Oligomers Derivatives Structure by IR- and NMR-Spectroscopy

Using IR-and NMR-spectroscopy (1H and 13C) the structure of functional oligomers based on novolac phenol-formaldehyde and polyglycidyl phenol-formaldehyde oligomers has been characterized. The structure of modified phenol-formaldehyde oligomers has been confirmed by the presence of absorption bands and proton shifts corresponding to furan ring, methacrylic fragment, peroxy, hydroxyl, and phenol groups.

Synthesis and Application of Oligomer with Hydroxy Groups based on Peroxy Derivative of ED-24 Epoxy Resin and PolyTHF-2000 Oligoether

New oligomer with peroxy, primary and secondary hydroxy groups has been synthesized on the basis of peroxy derivative of ED-24 epoxy resin (PO) and PolyTHF-2000 oligoether according to the developed procedure. The effect of the catalysts nature and amount, temperature and process time on the reaction rate has been studied. Benzyltriethylammonium chloride, potassium hydroxide, 1,4-diazobicyclooctane and the mixture composed of benzyltriethylammonium chloride and KOH (molar ratio 1:1) were used as the catalysts.

Copolymerization of Peroxy Derivatives of Dioxydiphenylpropane Diglycidyl Ether Monomethacrylate with Styrene

The copolymerization reaction of peroxy derivatives of dioxydiphenylpropane diglycidyl ether monomethacrylate with styrene has been studied at 333 K in the medium of toluene using azo-bis-isobutyric acid dinitrile as an initiator at different molar ratio of the initial monomers. The reaction rates have been determined and copolymerization constants have been calculated. The structure of the synthesized copolymers was confirmed by chemical and IR-spectroscopic analyses

Initiated by Organic Peroxides Cooligomerization of Unsaturated Hydrocarbons of C5 fraction – By-product of Ethylene Production

Initiated by organic peroxides cooligomerization of unsaturated compounds of C5 fraction has been studied. Such fraction is a by-product obtained at ethylene production via hydrocarbon raw material pyrolysis. The main regularities of the process have been established, the effect of main factors (temperature, reaction time, nature and concentration of the initiators) on the yield and physico-chemical characteristics of the obtained cooligomers has been examined. The effective initiator and optimal technological parameters of the cooligomerization process have been determined