Process for the preparation of aromatic diamines carrying a...

C - Chemistry – Metallurgy – 07 – F

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402/21, 260/443.

C07F 7/10 (2006.01) C08G 77/388 (2006.01)

Patent

CA 1312088

BREVET D'INVENTION PROCEDE DE PREPARATION DE DIAMINES AROMATIQUES A GROUPEMENT DIORGANOPOLYISILOXANE Société dite : RHONE-POULENC CHIMIE Inventeurs : Pascal BARTHELEMY ABREGE DU CONTENU TECHINIQUE DE L'INVENTION La présente invention concerne un nouveau procédé de préparation d'alpha, oméga-bis(amino-phénoxyalkyl)diorganopolysiloxanes de formule : Image (I) dans laquelle : R1, R2, R3, R4 et R5 représentent chacun un radical hydrocarboné et la somme y + z est comprise entre 0 et 100. Selon le procédé, les diamines sont obtenues par hydrosilylation directe en masse d'alkyloxyanilines par différents alpha, oméga-bis(hydrogéno)diorganopolysiloxanes appropriés. La selectivé de la réaction d'addition conduisant aux diamines de formule (I) est pratiquement égal à 100%.

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