A green route to polyurethanes: oxidative carbonylation of industrially relevant aromatic diamines by CO₂-based methyl formate

Abstract

Toluene-2,4-diamine, 4,4′-methylenedianiline and 2,4-diaminomesitylene were converted directly into the corresponding dicarbamates via the CO2-based intermediate methyl formate (MF) which can be regarded as a liquid source for CO/MeOH mixtures.

A Biomass‐Ligand‐Based Ru(III) Complex as a Catalyst for Cycloaddition of CO2 and Epoxides to Cyclic Carbonates and a Study of the Mechanism

“…[21][22][23] In addition, it can also be used as cosmetic additives, plasticizers for acrylic film, additives for antifreeze, and intermediates in the production of other chemicals or polymers. [24][25] Compared with the phosgene method with high toxicity and high pollution, the preparation of cyclic carbonate by CO 2 cycloaddition method is an economical, effective and environmental way. [26][27] Therefore, the preparation of five-membered cyclic carbonate by CO 2 cycloaddition reaction was a costeffective way for CO 2 using and has important significance and broad application prospects.…”

“… [19–20] Cyclic carbonates can be used as an excellent clean polar solvent for mixture extraction and separation, processing phenolic resin, synthetic polycarbonate, synthetic thermosetting resin, synthetic thermal recording material, high energy density battery (such as Lithium battery) and capacitor electrolyte [21–23] . In addition, it can also be used as cosmetic additives, plasticizers for acrylic film, additives for antifreeze, and intermediates in the production of other chemicals or polymers [24–25] …”

Spiers Memorial Lecture: CO2 utilization: why, why now, and how?

“…99,100 High-volume materials, such as polyurethanes, can be made with substantial fractions of CO 2 101 and thus CO 2 as a raw material opens pathways to green chemistry for polymer production. 102 Introducing CO 2 into polymer synthesis had already been described in the 1960's. 103 The production of polyurethane for foam manufacturing can serve a wide range of industries (Fig.…”

Carbon2Polymer: A CO2‐based Route to Polyurethanes via Oxidative Carbonylation of TDA with Methyl Formate

“…Based on preliminary studies using aniline as model substrate, we now focussed on TDA as the industrially relevant starting material , . In practical terms, liquid aniline can be directly introduced in the pre equilibrated reactive system while at room temperature solid TDA has to be applied in solution.…”