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Nizamov T.A.,Tashkent Chemico Technological Institute
International Polymer Science and Technology | Year: 2012

The results of investigations of the synthesis of furfuryl- alkylene oligomers are set out. It is established that the synthesised oligomers are segmented cooligomers. The chemical composition of the cooligomers is characterised quantitatively. © 2012 Smithers Rapra Technology. Source


Beknazarov K.S.,Tashkent Chemico Technological Institute | Dzhalilov A.T.,Tashkent Chemico Technological Institute
International Polymer Science and Technology | Year: 2016

A study was made of the synthesis of oligomeric derivatives of gossypol with epichlorohydrin and allyl halides. The structure of the oligomeric derivatives of gossypol was confirmed by IR spectroscopic and elemental analysis. The antioxidative capacity of the oligomeric derivatives of gossypol in the inhibition of low-density polyethylene (LDPE) was investigated. Study of the antioxidative properties of the synthesised oligomeric antioxidants by mass chromatography showed that comparison of the decomposition products of LDPE made it possible to conclude that the antioxidants affect the process of C-C bond rupture. The number of R-In bonds formed during the degradation of LDPE can serve as the main criterion of stability of stabilised specimens. © 2016 Smithers Information Ltd. Source


Ostanov U.Y.,Tashkent Chemico Technological Institute | Beknazarov K.S.,Tashkent Chemico Technological Institute | Dzhalilov A.T.,Tashkent Chemico Technological Institute
International Polymer Science and Technology | Year: 2011

Thermal analysis methods were used to investigate highdensity polyethylene (HDPE) stabilised with the addition of 0.5-1.0% antioxidant. Antioxidant was produced on the basis of gossypol with hexamethylenediamine (GHMDA) and with urea adduct (GUA). © 2011 Smithers Rapra Technology. Source


Magrupov F.A.,Tashkent Chemico Technological Institute | Alimukhamedov M.G.,Tashkent Chemico Technological Institute | Magrupov A.F.,Tashkent Chemico Technological Institute | Nizamov T.A.,Tashkent Chemico Technological Institute
International Polymer Science and Technology | Year: 2014

A study was made of the conditions of heteropolycondensation of furfuryl alcohol with formaldehyde at different molar ratios. A new mechanism of formation and a new structure of furfurylformaldehyde oligomers by means of separating the initial polycondensation products are proposed. © 2014 Smithers Rapra Technology. Source


Beknazarov K.S.,Tashkent Chemico Technological Institute | Dzhalilov A.T.,Tashkent Chemico Technological Institute | Ostanov U.Y.,Tashkent Chemico Technological Institute | Erkaev A.M.,Tashkent Chemico Technological Institute
International Polymer Science and Technology | Year: 2015

The corrosion inhibiting capacity of oligomeric gossypol derivatives has been studied. It is shown that oligomeric gossypol-based corrosion inhibitors with urea adducts effectively protect steel against corrosion in a saline medium, while in acidic media the gossypol derivatives with melamine exhibit effective protection. © 2015 Smithers Information Ltd. Source

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