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Methylene diphenyl diisocyanate and toluene diisocyanate are two common production volume chemicals used for the manufacture of polyurethanes. The most important adverse health effects of overexposure in the workplace are isocyanate-induced asthma, lung function decrement, and, to a lesser extent, skin reactions. Many journals have explored MDI and TDI's reactivity in biological media and the related biochemistry, which has increased the knowledge of their biochemical and physiological behaviour. Both TDI and MDI display similar responses in reactivity to biological macromolecules, distribution, metabolism, and excretion.
Source link: https://doi.org/10.1177/07482337211060133
Abstract Partial substitution of polymeric methylene diisocyanate resin for the manufacture of strand board by ten to fifteen percent soy flour for the manufacture of strand board enhances board quality while lowering cost. As determined by CO2 evolution, the reaction of soy flour with pMDI occurs over several hours. Uniform mixing of soy flour with pMDI is vital because unreacted soy flour tends to retain water, which degrades the board's wet properties.
Source link: https://doi.org/10.13073/fpj-d-20-00014
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