Runaway Reactions and Vapor Cloud Explosions: the Synthron Case Study Sabrina Copelli*, Vincenzo Torretta, Daniele Massa, Carlo Sala Cattaneo, Marco Derudi, Renato Rota Università degli Studi dell’Insubria Dip. di Scienza e Alta Tecnologia Via G.B. Vico 46 21100 Varese Italy Politecnico di Milano Dip. di Chimica, Materiali e Ingegneria Chimica “G. Natta”P.za Leonardo da Vinci 20133 Milano Italy...

Silicon oxide in combination with magnesium chloride is used as a support for the industrial preparation of some types of Ziegler-Natta catalysts. These catalysts are the best candidates for the low pressure production of linear low-density polyethylene and ethylene co-polymers from the gas phase, with improved optical properties in the film form. By many authors silica is believed to act as an...

Abstract Due to the important role of cocatalyst in polymerization process employing industrially favored Ziegler–Natta catalysts, its effect on kinetic behavior, catalyst activity, and polymer properties is discussed. In this paper, triethyl aluminum (TEA) triisobutyl (TIBA) have been used as main ingredient with 10–20 mol percent diethyl chloride (DEAC) ethyl dichloride (EADC) cocatalysts, be...

Linear low-density polyethylene (LLDPE) materials may contain components, which are soluble at room temperature. These influence physical properties or raise concerns for end-users and regulatory bodies because LLDPE is widely used food packaging. Due to the nonpolar amorphous nature of temperature part LLDPE, its molecular characterization with common methods polyolefin analysis, such as Tempe...

the effects of temperature, time and the strategy of prepolymerization were studied on the morphology of polypropylene particles. propylene polymerization was carried out in slurry phase using 4th generation of ziegler-natta catalyst, cyclohexylmethyl dimethoxysilane as external electron donor, and triethyl aluminum as co-catalyst. prepolymerizations were carried out based on two strategies: is...

In this study, a mathematical model for the time evolution of molecular weight distribution (MWD) was developed. This temporal is based on well-known Ziegler–Natta polymerization mechanism and reaction kinetics by parametric solving related differential equations. However, due to generality reactions involved, can be extended other type catalysts, such as metallocenes, Phillips, etc. The superi...