Zobrazeno 1 - 10
of 38
pro vyhledávání: '"N.N. Tvorogov"'
Publikováno v:
Polymer Science U.S.S.R.. 33:2094-2103
The problem of shelf-life of polymerizable compounds is dealt with in conjunction with the problem of their processing. Kinetic parameters that characterize the polymerization of such compounds under storage conditions and the monomer processing have
Publikováno v:
Polymer Science U.S.S.R.. 16:2153-2156
Using a model system chain transfer to an oligomer unit was studied during polymerization of dimethacrylic esters of oligotetramethylene glycols. It was found that chain transfer has a very slight, negligible effect on the overall reaction system. Th
Publikováno v:
Polymer Science U.S.S.R.. 18:399-408
The kinetics of the polymerization of methyl methacrylate (MMA) and dimethyltriethylene glycol (TGM-3) have been studied in the presence of oxygen and of an anti-oxidant (AO). The induction period depends on the monomer concentration in a closed syst
Autor:
A.G. Kondrat'yeva, N.N. Tvorogov
Publikováno v:
Polymer Science U.S.S.R.. 20:267-273
A study was made of polymerization of the dimethacrylic ester of oligotetramethylene glycol with M = 600 at 50° in the presence of AID and benzoquinone. By simply comparing rates of inhibited and uninhibited polymerization rate constants of chain ex
Publikováno v:
Polymer Science U.S.S.R.. 17:683-689
The rate of initiation was determined for the polymerization of the oligo(tetramethyleneglycol dimethacrylate), mol.wt. 700, in the presence of azo-iso-butyronitrile and benzoyl peroxide in the temperature interval 10–90°. The initiation efficienc
Autor:
N.N. Tvorogov
Publikováno v:
Polymer Science U.S.S.R.. 18:2192-2202
The kinetic theory of gel formation and the boundaries of formation of gel are discussed. The beginning and end of gel formation are taken as those degrees of conversion at which the maximal and minimal concentrations of polymer chains respectively a
Autor:
N.N. Tvorogov
Publikováno v:
Polymer Science U.S.S.R.. 17:1677-1688
The kinetics of polymerization in the presence of oxygen and inhibitors of the anti-oxidant type is considered. Equations for the rates of polymerization and oxidation of the monomer and for the consumption of the inhibitor are obtained for condition
Autor:
N.N. Tvorogov
Publikováno v:
Polymer Science U.S.S.R.. 25:282-294
Equations have been obtained for the rate of oxidation and polymerization of a monomer, the induction period and other parameters of the reaction of polymerization occurring at any concentration of the antioxidant. The conditions in which the antioxi
Autor:
N.N. Tvorogov, A.G. Kondrat'eva
Publikováno v:
Polymer Science U.S.S.R.. 20:1748-1760
Equations are given for the estimation of the efficiency and time limits of gelling in the presence of kinetic chain transfer agents. The study results are reported of the gel formation by polyhydroxytetramethylene-α,ω-methacrylate of M = 700 (MTMH
Autor:
N.N. Tvorogov, A.A. Berlin
Publikováno v:
Polymer Science U.S.S.R.. 19:1468-1477
The kinetics of gel formation have been examined and a quantitative analysis carried out of the dependence of polymer chain concentration on time and on the degree of conversion of polyfunctional vinyl compounds. At low conversions, the polymerizate