Polyurethane: An Introduction - IntechOpen
as well as the general chemistry involved in the production of PU. 2. Raw materials PU are formed by chemical reaction between a di/poly isocyanate and a diol or polyol, forming repeating urethane groups, generally, in presence of a chain extender, catalyst, and/or other additives. Often, ester, ether, urea and aromatic rings are also present along
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