225795-36-8Relevant articles and documents
Versatile Chemical Recycling Strategies: Value-Added Chemicals from Polyester and Polycarbonate Waste
Payne, Jack M.,Kamran, Muhammad,Davidson, Matthew G.,Jones, Matthew D.
, (2022/02/25)
ZnII-complexes bearing half-salan ligands were exploited in the mild and selective chemical upcycling of various commercial polyesters and polycarbonates. Remarkably, we report the first example of discrete metal-mediated poly(bisphenol A carbonate) (BPA-PC) methanolysis being appreciably active at room temperature. Indeed, Zn(2)2 and Zn(2)Et achieved complete BPA-PC consumption within 12–18 mins in 2-Me-THF, noting high bisphenol A (BPA) yields (SBPA=85–91 %) within 2–4 h. Further kinetic analysis found such catalysts to possess kapp values of 0.28±0.040 and 0.47±0.049 min?1 respectively at 4 wt%, the highest reported to date. A completely circular upcycling approach to plastic waste was demonstrated through the production of several renewable poly(ester-amide)s (PEAs), based on a terephthalamide monomer derived from bottle-grade poly(ethylene terephthalate) (PET), which exhibited excellent thermal properties.
Deactivation of catecholase-like activity of a dinuclear Ni(II) complex by incorporation of an additional Ni(II)
Mondal, Monotosh,Guha, Pampa M.,Giri, Sanjib,Ghosh, Ashutosh
, p. 54 - 64 (2016/08/24)
A new dinuclear Ni(II) complex [Ni2L2(PhCOO)(H2O)2]ClO4 (1) has been synthesized by reacting Ni(ClO4)2·6H2O with a reduced Schiff base ligand [(3-dimethylamino-propyla
Capillary supercritical fluid chromatography/mass spectrometry of phenolic mannich bases with dimethyl ether modified ethane as the mobile phase
Fuchslueger, Ulf
, p. 2324 - 2333 (2007/10/03)
The analysis of phenolic Mannich bases-which are used as hardeners and accelerators for epoxy resins-by capillary supercritical fluid chromatography (SFC) with dimethyl ether modified ethane as the mobile phase is described. The elution properties of several different mobile phases with respect to amines are shown. SFC with UV detection is coupled via a custom-built interface to a mass spectrometer with atmospheric pressure chemical ionization. Two technically important Mannich bases prepared by different production processes are characterized and compared with respect to their byproducts. The role of dimethyl ether during the ionization process and the fragmentation of phenolic Mannich bases is discussed.