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.
It is extended to other ideals by multiplicativity. The Eisenstein reciprocity law states that. for a any rational integer coprime to and Î± any element of Z [Î¶] that is coprime to a and and congruent to a rational integer modulo (1âÎ¶) 2.