Results 111 to 120 of about 20,442 (252)
ChemPlusChem, EarlyView.This study presents a sustainable approach to functionalizing DMAP by introducing an aminomethyl group for stable anchoring on mesoporous silica supports, creating an effective, recyclable hybrid catalyst. Characterized by techniques like XRD, TGA, and FT‐IR, the hybrid retained stability and showed strong catalytic performance for the Knoevenagel ...
Julio C. Fernandes P. Brito +8 more
wiley +1 more source
Contact Dermatitis, Volume 88, Issue 1, Page 27-34, January 2023., 2023 At the Finnish institute of Occupational Health in 2015–2019, we would have missed 39 (18.9%) of our 206 cases of OACD if we had solely used commercial test substances. Abstract Background Commercial patch test substances do not cover all occupational contact allergens.
Kristiina Aalto‐Korte, Maria Pesonen
wiley +1 more source
ChemPhotoChem, EarlyView.This review focuses on recent developments in heterogenization of photocatalysts into polymers, highlighting methods like photocatalyst polymerization, post‐grafting, and 3D printing. Discussion about these different approaches of heterogeneous photocatalysis (advantages and drawbacks) is provided.
Cloé Delacourt +3 more
wiley +1 more source
ChemSusChem, EarlyView.Increasing bio‐based and circular components in polyurethane formulation up to 65 %w/w maintaining the market acceptability through multivariate analysis approach Abstract In this contribution, we tackle the replacement of the Hg‐based catalyst and fossil‐derived isocyanate precursors toward the formulation of a more sustainable polyurethane ...
Gabriele Viada +5 more
wiley +1 more source
Rethinking Chlorine: Essential Chemical or Replaceable Risk?
ChemSusChem, EarlyView.Chlorine is essential for the production of plastics and pharmaceuticals but poses significant safety and environmental risks. Herein, processes are presented that substitute chlorine or reduce its demand. Where indispensable, trichloride‐ and bichloride‐based ionic liquids could enhance safety and streamline the integration of renewable energy ...
Johannes Schwan +6 more
wiley +1 more source
31P-kernmagnetische Resonanzspektren der Phosphor-isocyanate und Phosphor-isothiocyanate [PDF]
, 1964 Ekkehard Fluck
openalex +1 more source
En Route Toward Sustainable Polycarbonates Via Large Cyclic Carbonates
ChemSusChem, Accepted Article.This review reports an up‐to‐date overview of the synthetic methodologies developed for the preparation of large cyclic organic carbonates with ≥ 6‐membered rings (6M‐CCs and above), highlighting the most sustainable synthetic pathways employing diols (including renewable‐based ones) and non‐hazardous carbonyl sources, e.g., linear organic carbonates ...
Francesco Della Monica +5 more
wiley +1 more source
ChemSusChem, EarlyView.This study develops the depolymerization of poly(hydroxyurethane)s prepared from five‐membered cyclic carbonates (5CCs) and amines. Based on the model reaction of hydroxyurethanes with low‐molecular weight, this study examines the decomposition behavior and reveals that the trifluoroacetic acid promotes the transformation into a 5CC efficiently.
Sho Morinaga +5 more
wiley +1 more source
Recycling of Polyurethane via Mechanocatalytic Methanolysis/Hydrolysis
ChemSusChem, EarlyView.In this study, it is shown that up to 86% of soluble polyol can be recovered from the hydrolysis of polyurethane using a ball milling‐assisted process below 100 °C in the presence of NaOH, a small amount of H2O and a Cu/MgAlOx co‐catalyst. Polyurethane (PU) is the 6th most produced plastic on a global basis, and thus one of the most important targets ...
Bolun Wang +7 more
wiley +1 more source