USE OF AROMATIC DIAMINE RECEIVING STERIC HINDRANCE IN PRODUCTION OF POLYURETHANE FOAM

摘要

1. The use of sterically hindered aromatic diamines corresponding to the following general formula(e) see diagramm : EP0177766,P5,F1 and/or see diagramm : EP0177766,P5,F2 in which R**1 and R**2 may be the same or different and represent C1 -C4 alkyl and R**3 and R**4 may also be the same or differenht and represent H or CH3 , in the production of in situ polyurethane foams, the diamines being present in the polyol component of the foamable reaction system in a quantity of from 1 to 6 % by weight, based on the polyol component.