Modification with diethylamine and diethanolamine of co-oligomers of 2-propenylphenol with maleic anhydride yielded water-soluble nitrogen-containing derivatives inhibiting the corrosion of St.3 steel in watersalt solutions.
By the reactions of double cooligomers of 2-propenylphenol and maleic anhydride (M similar to 4500) with various amines their water-soluble nitrogen-containing derivatives have been synthesized. The surface-active properties of latter ones at the border of aqueous solution-air have been investigated and some parameters of micelle formation have been determined
Shandeniz deposit on condensate and gas resources is the deposit of world scale. The possibility of preparation of the jet fuels of mark JF, Jet A-1 by selective hydrocracking on the catalyst SGK-1 in soft mode has been shown. The jet fuels prepared from gas-condensate Shandeniz deposit have a chilling temperature minus 60 degrees C, which corresponds requirements made to the jet fuels.
Pyridinium salts have been synthesized by reacting 2-allyl- and 4-propenylphenoxy(C2–C4)bromoalkanes with pyridine and further examined as inhibitors of hydrogen sulfide corrosion of St3 steel in water-salt systems containing H2S. The dependence of the protective properties of the test compounds on their structure has been revealed. It has been found that N-(2-propenylphenoxytetamethylene)pyridinium bromide exhibits the best inhibitory properties (degree of corrosion protection at a concentration of 100 mg L−1 is 96.0%).
In this work, we describe the results of studying the effect of the temperature-time modes of crystallization on the structure and properties of nanocomposites based on polypropylene and cadmium sulfide prepared via electrical discharge treatment in an air medium above the breakdown strength of the air. The temperature-time modes of the crystallization and other treatment factors change the supramolecular structure of the polymer, the interfacial interactions between the components of the composites, and the thickness of the interfacial layer.
In this work is given results of influence of temperature and time regimes of crystallization on the structures and properties nanocompositions on the basis of polypropylene and cadmium sulphide, prepared from polymer, treated by electrical discharge in air quality. Has been shown temperature and time of crystallization and other technological regimes change supramolecular structure of the polymer, interphase interactions between components of compositions and thickness of interphase layer.
The influence of thermal treatment and liquid nitrogen treatment of cocoons on the electric properties of natural silk fibroin has been studied. It is found that, at the cocoon treatment by liquid nitrogen, the ratio of the amorphous and crystalline parts of the fibroin is preserved and the concentration of submicrocracks in them changes to a lesser extent than at treatment by heated air and a UHF field. The increase of the degree of crystallinity in the polymers leads to a certain increase of their breakdown voltage.
The review deals with the methods of synthesis of alkenylphenols and their derivatives whose ethylene bond is conjugated with the benzene ring; data are presented on the polymerisation, copolymerisation, and polycondensation of these compounds and also on the applications of polymeric materials based on them. The bibliography includes 189 references.