Zobrazeno 1 - 10
of 22
pro vyhledávání: '"Sh.A. Nasybullin"'
Publikováno v:
Polymer Science U.S.S.R.. 23:349-358
A comparative study has been made of the thermal degradations of oligo-isobutylenes having carboxyl or ketonic end groups with that of polyisobutylene as model. The oligo-isobutylenes have found less heat-resistant owing to their content of unstable
Publikováno v:
Polymer Science U.S.S.R.. 29:1381-1388
Processes and physico-chemical transformations that accompany flame combustion of polychloropyrene composites filled with vulcanizing metal oxides, antimony trioxide and carbon black have been studied. The formation of volatile antimony halides toget
Publikováno v:
Polymer Science U.S.S.R.. 21:1857-1866
The general relationships found in oxidation of carbon chain polymers in solution apply to the oxidation of oligoisobutylene in solution in chlorobenzene. Terminal carboxyl groups in oligoisobutylenes undergo decarboxylation under the action of perox
Publikováno v:
Polymer Science U.S.S.R.. 18:3024-3031
By reacting with peroxide radicals phosphates retard initiation of oxidation of PE, both in the solid phase and in the melt. The efficiency of three phosphites has been determined quantitatively and it is shown that the inhibiting efficiency of phosp
Publikováno v:
Polymer Science U.S.S.R.. 19:407-412
By reacting with peroxide radicals organic phosphites inhibit the oxidation of solid polypropylene (PP). A quantitative evaluation of the efficiency of two phosphites was carried out; the inhibiting efficiency of the phosphite containing masked pheno
Publikováno v:
Polymer Science U.S.S.R.. 22:707-715
A study has been made of kinetic regularities of the initial stage of the reaction of epoxides with oligoisobutylene dicarboxylic acid in bulk and in solution, and the molecular character of this reaction has been established. It was found that the r
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 25:1228-1232
1. The mechanism of the catalytic reaction between hydroperoxide and phosphite consists in equilibrium complex formation between the catalyst and the phosphite and the hydroperoxide, and the reaction of the phosphite with coordinated molecules of the
Autor:
D. G. Pobedimskii, P.A. Kirpichnikov, O. P. Yablonskii, Anatolii L Buchachenko, R. B. Svitych, Sh.A. Nasybullin
Publikováno v:
Organic Magnetic Resonance. 9:61-63
The vanadium IV ion in vanadyl acetylacetonate (VIV) forms labile paramagnetic complexes with organic phosphites in the first coordination sphere. The enthalpy of complex formation between VIV and triphenyl phosphite was 2.6 kcal mol−1. Complex for
Publikováno v:
Bulletin of the Academy of Sciences of the USSR Division of Chemical Science. 25:68-70
1. In the reaction of hydroperoxides with phosphites, catalyzed by vanadyl acetylacetonate, chemical polarization of31P nuclei (CPN) is suppressed or greatly weakened. 2. The results of CPN-31P in the presence of a catalyst confirm the occurrence of
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