ABSTRACT
4.1 Introduction
This chapter will discuss two types of cure; (a) one component by moisture from the air and (b) two component in which the second component contains an active hydrogen which cures the isocyanate containing first component. Another subject of this chapter, catalysis, is an integral part of the curing process. Latent hardeners, a very important type of cure, merits a full chapter, namely Chapter 5.
