Diphenyl carbonate

Monomers, Polymers, and Plastics

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Published in James G. Speight, Handbook of Petrochemical Processes, 2019

James G. Speight

Diphenyl carbonate is produced by the reaction of phosgene and phenol. Thus: 2C6H5OH+COCl2→C6H5OCO2C6H5+2HCl

Dynamic analysis and decentralised control system design for diphenyl carbonate reactive distillation process

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Published in Indian Chemical Engineer, 2022

Shirish Prakash Bandsode, Chandra Shekar Besta

Polycarbonates, containing carbonate groups in their chemical structures, are essential group of thermoplastic polymers. The easy moulding and thermoforming properties forge polycarbonates to have several applications. Diphenyl carbonate (DPC), an acyclic carbonate ester, is a monomer in the production of polycarbonate polymers. The transesterification reaction between dimethyl carbonate (DMC) and phenyl acetate (PA) produced DPC [1]. This process required one reactive distillation (RD) column and one separation column and was more effective because of the absence of azeotrope, high equilibrium constants and no side reactions. The RD process, involving the integration of reaction and separation in one place, is usually associated with high non-linearities [2]. The interaction of reaction and separation, responsible for the occurrence of multiple steady states, sets a challenge in designing a robust controller. Furthermore, the high non-linearity and dynamic interactions cannot be effectively controlled by Single-Input Single-Output controller and hence urges for Multi-Input Multi-Output controller.

Diphenyl carbonate

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Monomers, Polymers, and Plastics

Dynamic analysis and decentralised control system design for diphenyl carbonate reactive distillation process