Depolymerization of End-of-Life Poly(bisphenol A carbonate) via 4-Dimethylaminopyridine-Catalyzed Methanolysis was written by Alberti, Christoph;Enthaler, Stephan. And the article was included in Waste and Biomass Valorization in 2020.Application In Synthesis of Diphenyl carbonate The following contents are mentioned in the article:
The chem. recycling, a sequence of depolymerization and polymerization reactions, of end-of-life plastics/polymers can contribute to a sustainable, resource-conserving and environmental-benign society. In this regard, we have set up a protocol for the depolymerization of end-of-life poly(bisphenol A carbonate). In more detail, applying a combination of methanol and catalytic amounts of 4-dimethylaminopyridine (DMAP) end-of-life poly(bisphenol A carbonate) was depolymerized to bisphenol A and di-Me carbonate. With the aid of microwave heating an excellent rate of depolymerization ( > 99%) within short reaction times (5 min) and turnover frequencies up to 1164 h-1 were achieved. Moreover, it was demonstrated that phenolysis can be applied under optimized reaction conditions resulting in the formation of the mixture bisphenol A and di-Ph carbonate, which can be used for the synthesis of new poly(bisphenol A carbonate). In consequence a closed cycle for poly(bisphenol A carbonate) is feasible. This study involved multiple reactions and reactants, such as Diphenyl carbonate (cas: 102-09-0Application In Synthesis of Diphenyl carbonate).
Diphenyl carbonate (cas: 102-09-0) belongs to esters. Esters perform as high-grade solvents for a broad array of plastics, plasticizers, resins, and lacquers, and are one of the largest classes of synthetic lubricants on the commercial market. Because of their lack of hydrogen-bond-donating ability, esters do not self-associate. Consequently, esters are more volatile than carboxylic acids of similar molecular weight.Application In Synthesis of Diphenyl carbonate
Referemce:
Ester – Wikipedia,
Ester – an overview | ScienceDirect Topics