Abstract
The range of urethane and urea polymeric products derived from isocyanate and active hydrogen based reactants is broad and well known. There have been rapid developments of such reactive systems, their additives and processing routes, especially for microcellular and other RIM products since the early 80's. This has come from demands for product and process improvements (e.g. from the automotive industry), and from legislation including health and safety needs, (e.g. CFC replacement).
Developments in microcellular polyurethane processes are discussed from the basis of the chemical and process technology of the ingredients and formulations employed, especially the influences on processability and the resulting polymers’ end properties.
Get full access to this article
View all access options for this article.