Creation of experimental-statistical and kinetic models of the coumarone-indene-carbazole resin production process

Abstract

To create an effective and inexpensive modifier of road petroleum bitumen the authors continued to study the production and application of coumarone-indene-carbazole resins (CICR). In previous researches the influence of various factors on the process of obtaining CICR had been investigated and analyzed. However, the complex influence of process factors was not established. Therefore, the aim of this research was to create an adequateexperimental-statistical and kinetic models. According to them, optimal process conditions were proposed, which iclude: a carbazole content in the raw material of 19.5 wt. % relative to the resin-forming components (styrene, coumarone, indene), a catalyst content of 8.0 wt. % relative to the resin-forming components, a process temperature of 115 °C, and a process duration of 46 min. The determined effective activation energy of the CICR synthesis was 21.2 kJ/mol. The obtained results will allow us to extrapolate the conditions for gaining CICR in industrial processes and receive an effective bitumen modifier under optimal conditions.

Keywords

• Experimental-statistical model
• Kinetic model
• Response surface methodology
• Fractional factorial design
• Optimal conditions
• Coumarone-indene-carbazole resin