Polycarbonate Diols (PCD) are used for a wide range of polyurethane-based coating formulations, providing an extreme durability and a high performance to the final polymer. ok
In mathematics, a reciprocity law is a generalization of the law of quadratic reciprocity. There are several different ways to express reciprocity laws.
In social psychology, reciprocityis a form of social behavior characterised by the mutual exchange of similar, positive or negative responses, between individuals as they interact. Thus positively interpreted actions elicit positive responses and negative reactions are responded to negatively.