Diisocyanate Divinylbenzene

Butadiene/styrene/divinylbenzene copolymer 26471-62-5 Toluene diisocyanate 26483-35-2 Behenamine oxide Incromine Oxide B Incromine Oxide B-30P Incromine Oxide B50 26499-65-0... 

In Refs. 125, 126 the viscosity is measured with a magnetic sphere rheometer at decreasing shear rate (its lowest value is 10" s ) in different polymeric systems free-radical copolymerization of styrene-meta-divinylbenzene with solvent and polycondensation of hexamethyl diisocyanate with polyoxypropylene with and without solvent. These experiments yield k = 0.79 in both systems. The standard deviation of experiments performed at different shear rates at the gel points is 0.07 in k. Since t and E are measured in Ref. 126 using the same apparatus and the same sample, T is determined as the time vriiere 9 and E are equal to zero, the precision in Tc being higher than 10" %. 

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