Glycolysis of polyurethane wastes
WebIn this review, glycolysis of waste polyurethane foam (PUF) materials with different glycols and catalysts, esp. metallic ones were considered, and the effect of some addnl. parameters such as the nature of glycol, catalyst, … Web@article{osti_5090958, title = {Polyurethane waste recycling; glycolysis and hydroglycolysis of water-blown foams}, author = {Gerlock, J and Braslaw, J and Zinbo, M}, abstractNote = {In this paper, glycolysis of toluenediisocyanate based water-blown polyurethane foam has been examined by high performance liquid chromatography and …
Glycolysis of polyurethane wastes
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WebSep 1, 2007 · The glycolysates were produced via glycolysis of waste polyurethane foam in the reaction with one of the following glycols: 1,3-propanediol, 1,5-pentanediol, and 1,6 … WebJul 20, 2024 · Rigid polyurethane foam wastes were milled by means of a blade mill to different particle sizes (5 mm, 2 mm, and 0.5 mm in diameter) prior to the glycolysis reaction. The selected glycol was fed into a 500 mL three-necked glass reactor, equipped with a stirrer that was set at 100 rpm, a thermometer, and a reflux condenser.
WebThis paper reviews the main advances in the polyurethane (PU) recycling field, from laboratory and academia processes to pilot plant and industrial scale ones, including the … WebMar 10, 2024 · Rigid polyurethane (RPU) foams have been successfully glycolyzed by using diethylene glycol (DEG) and crude glycerol (CG) as transesterification agents. …
WebHydroxyfunctional compounds suitable for use in the polyisocyanate polyaddition process are obtained from polyurethane and/or polyurethane polyurea waste by decomposition with an alcohol and subsequent reaction of the alcoholysis products to reduce their content of low molecular weight, sterically unhindered aromatic amines. In this process, … WebMar 22, 2024 · The preparation and characteristics of rigid polyurethane foams (RPUFs) synthesized from polyols obtained by glycolysis of post-industrial waste RPUFs have been studied.
WebIn this paper, glycolysis of toluenediisocyanate based water-blown polyurethane foam has been examined by high performance liquid chromatography and gel permeation …
Web@article{osti_5090958, title = {Polyurethane waste recycling; glycolysis and hydroglycolysis of water-blown foams}, author = {Gerlock, J and Braslaw, J and Zinbo, … john bowman distilleryWebJan 27, 2024 · Abstract. In this work, we explored a microwave-assisted glycolysis process to chemically recycle rigid polyurethane (PU) foam waste to obtain a single-phase product with suitable physio-chemical properties as a secondary raw material for the preparation of new rigid PU products. Such an approach was compared to a conventionally heated … intelliversioning 群晖WebDec 30, 2009 · The polyurethane (PU) intermediates were obtained by glycolysis of waste PU foam in the reaction with 1,6-hexamethylene glycol (HDO). The effects of different weight ratios of HDO to PUR foam on selected physicochemical properties were also determined. john bowman discus throw coachingWebJan 5, 2024 · The increased applications of Polyurethane (PU) materials give rise to a higher amount of wastes, which have a devastating effect on the earth in turn; therefore, … intelliverse email tracker loginWebFeb 27, 2024 · The use of polyurethanes and, therefore, the quantity of its scrap are increasing. Considering the thermoset characteristic of most polyurethanes, the most circular recycling method is by means of chemical depolymerization, for which glycolysis is finding its way into the industry. The main goal of polyurethane glycolysis is to recover … intelliversityWebJul 3, 2012 · In this study, the influence of glycols on chemical structure and thermal stability of glycolysates as polyurethane intermediates were investigated. The intermediates were obtained by the glycolysis process of waste polyurethane foams in the reaction with different glycols ranging from ethylene glycol to hexane-1,6-diol. The used glycols were … intellivest propertyWebMeckel Walter is an academic researcher from Bayer. The author has contributed to research in topic(s): Polyurethane & Polyurea. The author has an hindex of 1, co-authored 1 publication(s) receiving 11 citation(s). john bowman md las vegas