Selectivity of isophorone diisocyanate in the urethane reaction influence of temperature, catalysis, and reaction partners

In a model study of the selectivity of isophorone diisocyanate (IPDI) in the urethane reaction, the influence of the type of catalyst, temperature, and type of OH-group was demonstrated using primary and secondary butanol as reaction partners. In particular, the choice of catalyst has a dramatic effect on the composition of the final product mixture. The most important conclusions of the model study were confirmed in NCO-prepolymer synthesis. GFB LR-AT, D-45764 Marl, Germany. R. LOM?LDER received a Ph.D. Degree in Chemistry from the University of Münster, Germany. Dr. Lom?lder joined the research and development team for the coatings raw materials division of Hüls AG, Marl, Germany in 1989, where he worked with polyurethanes. Since 1992, Dr. Lom?lder has been working with IPDI and its derivatives in Hüls AG’s technical services department for polyurethane raw materials. FRIEDRICH PLOGMANN joined Veba Chemie’s technical services laboratory for polyurethane raw materials in 1976. In 1979, when Veba’s chemical activities were transferred to Hüls AG, Mr. Plogmann continued to work in the laboratory. PETER SPEIER joined the research and development department of Hüls AG in Marl, Germany in 1960, initially working with polybutadiene resins and later with saturated polyester resins. Since 1985, Mr. Speier has been working with polyurethanes raw materials in Hüls AG’s technical service laboratories in Marl.