Hexahydrophthalic anhydride (HHPA) belongs to the family of acid anhydrides, the members of which are reactive organic chemicals of low molecular weight widely used in alkyd and epoxy resins. The major toxic effects ofthe acid anhydrides are mucosal and skin irritation and respiratory hypersensitivity, particularly asthma. Most of the reported cases of asthma caused by acid anhydrides were due ...

As part of the casting process, foundries create sand molds and cores to hold the molten metal to specific dimensional tolerances. Although most of the waste foundry sands (WFSs) from this process are land filled, there is great interest in diverting them for use in agricultural and geotechnical applications. One potential limitation to their beneficial use is concern that the WFSs will leach h...

Waste molding and core sands from the foundry industry are successfully being used around the world in geotechnical and soil-related applications. Although waste foundry sands (WFSs) are generally not hazardous in nature, relevant data is currently not available in Argentina. This study aimed to quantify metals in waste molding and core sands from foundries using a variety of metal-binder combi...

Architectural paints are commonly found as trace evidence at scenes of crime. Currently the most widely used technique for the analysis of architectural paints is Fourier Transformed Infra-Red Spectroscopy (FTIR). There are, however, limitations to the forensic analysis of white paints, and the ability to discriminate between samples. Isotope ratio mass spectrometry (IRMS) has been investigated...

Polymer-based wood coatings are used for aesthetic purposes as well to protect surfaces, especially under external conditions. High-hardness mineral fillers thought enhance the resistance of these polymer wear and scratching. However, recent studies suggest that relatively low-hardness calcite (CaCO3, Mohs hardness 3) performs similarly harder minerals It can replace more expensive hard mineral...

The low-cost feedstocks such as sesame (sesamum indicum) and jatropha (jatropha curcas) seed oils were utilized to optimize the yield of alkyd resins. experimentally selected input factors ranges in molar ratios oil:glycerol (0.3 – 1), phythalic anhydride: glycerol (1 3), catalyst (0.5–1.5 wt. %) for optimization established using response surface methodology (RSM) Box Behken model improve resi...