Blocked isocyanates III: Part A. Mechanisms and chemistry

As the third installment in the series of reviews of the literature on blocked isocyanates, this review brings together the most important developments documented in over 3000 patents and publications that have been printed through the end of 1998. The mechanisms of the different blocking methods are discussed, as are examples of blocking groups that are cited. Particular emphasis is placed on the analytical techniques used to evaluate deblocking temperatures. Part B, Uses and applications of blocked isocyanates will be covered in a forthcoming paper of this journal.