4-substituted bis(2,6-diisopropylphenyl)- carbodiimides,...

Details 4-substituted bis(2,6-diisopropylphenyl)- carbodiimides,... 4-substituted bis(2,6-diisopropylphenyl)- carbodiimides,...

C - Chemistry, Metallurgy

07

C

C07C 267/00 (2006.01) C07C 265/12 (2006.01) C08K 5/29 (2006.01)

Patent

CA 2102821

4,4'-disubstituted bis-(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 stabilizers against hydrolytic degradation of polyaddition and polycondensation products containing ester groups, and the 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 for their preparation.

Divulgation de bis-(2,6-diisopropylphényl)carbodiimides disubstitués en 4,4', de formule (I) (voir fig. I), dans laquelle R est un radical 1-méthyl-1-phényléthyle, un radical phénoxy ou un radical tert-butyle, d'un procédé pour les préparer, de leur utilisation comme stabilisant contre la dégradation hydrolytique de produits de polyaddition et de polycondensation contenant des groupes esters et des nouveaux isocyanates de 4-(1-méthyl-1-phényléthyl)-2,6-diisopropyle, de 4-phénoxy-2,6-diisopropyle et de 4-tert-butyl-2,6-diisopropylphényle que l'on peut utiliser pour leur préparation here.

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