4-SUBSTITUTED BIS(2,6-DIISOPROPYLPHENYL)- CARBODIIMIDES, THEIR PREPARATION, THEIR USE, AND 4-SUBSTITUTED 2,6-DIISOPROPYLPHENYL ISOCYANATES WHICH CAN BE USED FOR THEIR PREPARATION

摘要

4,4'-disubstitutedbis-(2,6-diisopropylphenyl)carbodiimides of the formula (I)(see fig. I)where R is 1-methyl-1-phenylethyl, phenoxy or tert-butyl,a process for their preparation, their use as stabilizersagainst hydrolytic degradation of polyaddition andpolycondensation products containing ester groups, andthe novel 4-(1-methyl-1-phenylethyl)-2,6-diisopropyl-,4-phenoxy-2,6-diisopropyl- and 4-tert-butyl-2,6-diisopropylphenyl isocyanates which can be used fortheir preparation.