Polyurethanes, formed through the reaction of raw polyols with isocyanates, are one of the most widely used types of plastics today. By varying the starting materials, a diverse range of plastics can ...

One of the most commonly used varieties of plastic are polyurethanes. They are created from the reaction of raw polyols with isocyanates. A large variety of plastics can be acquired depending on the ...

Acid number determination plays a central role in petroleum quality control. This method is used to estimate the amount of additive depletion, oxidation and acidic contamination in petroleum products.