The quantity of potassium hydroxide needed for neutralization of half of the anhydride groups, all free acids and all carboxyl-terminated groups of an unsaturated polyester resin (UPR), is indicated ...

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 ...

The quality and value of a product are inherently connected. In the case of oils and fats, this may be complex to establish by looks alone. Particularly in high-cost natural oils from plant sources, ...