| abstract |
The invention relates to new 4,4'-disubstituted bis (2,6-diisopropylphenyl) carbodiimides of the formula (I) in which R is a 1-methyl-1-phenyl-ethyl, a phenoxy or a tert-butyl radical, a process for their preparation and their use as stabilizers against the hydrolytic degradation of ester groups-containing polyaddition and polycondensation products and the new 4- (1-methyl-1-phenyl-ethyl) -2,6-diisopropyl, 4-phenoxy-2,6-diisopropyl and 4-tert-butyl-2,6-diisopropyl-phenyl isocyanates which can be used in their preparation . |