[EN] SYNTHESIS PROCESS FOR N-(ETHOXYCARBONYLPHENYL)-N'-METHYL-N'-PHENYLAMIDINE<br/>[FR] PROCÉDÉ DE SYNTHÈSE DE N-(ÉTHOXYCARBONYLPHÉNYL)-N'-MÉTHYL-N'-PHÉNYLAMIDINE<br/>[ZH] 一种N-(乙氧基羰基苯基)-N'-甲基-N'-苯基脒的合成工艺
The present invention is directed to polyurethane-urea materials and to a process for their production. These polyurethane-ureas are preferably optically clear and comprise the reaction product of a (cyclo)aliphatic polyisocyanate or prepolymer thereof, with an isocyanate-reactive component that comprises one or more aromatic diamines which contains two primary amine groups, and one or more compounds containing two secondary amine groups which may be linked to aliphatic and/or aromatic moieties. This isocyanate-reactive component may additionally comprise one or more hydroxyl-functional compounds. The present invention offers a relatively fast “Green-Cure Time” of solid polyurethane-ureas which enables these to be demolded in a relatively short time period, followed by subsequent post-curing outside the mold.