C - Chemistry – Metallurgy – 07 – F
Patent
C - Chemistry, Metallurgy
07
F
C07F 1/02 (2006.01)
Patent
CA 2643268
The present invention provides a novel dicarbanionic initiator of formula (I). The present process further provides a process for the preparation of dicarbanionic initiator of formula (I) comprising reacting 1-bromo-4-(4'- bromophenoxy)-2-pentadecyl benzene of formula (II); with alkyllithium compound for an effecting halogen-lithium exchange reaction of 1-bromo-4-(4'-bromophenoxy)-2-pentadecyl benzene with sec- butyllithium in the presence of a non polar solvent, at a temperature in the range of 0 to 25°C and its use as an initiator for the synthesis of telechelic polydienes and polystyrenes and SBS or SIS triblock copolymers.
La présente invention concerne un nouvel amorceur dicarbanionique de formule (I). La présente invention concerne également un procédé de fabrication d'un amorceur dicarbanionique de formule (I) ; comprenant la mise en réaction du 1-bromo-4-(4'- bromophénoxy)-2-pentadécyl benzène de formule (II) avec un composé d'alkyllithium pour une réaction d'échange halogène-lithium de 1-bromo-4-(4'-bromophénoxy)-2-pentadécyl benzène avec du sec-butyllithium en présence d'un solvant non polaire, à une température comprise entre 0 et 25 °C, et son utilisation en tant qu'amorceur de la synthèse de polydiènes téléchéliques et de polystyrènes et de copolymères triblocs SBS ou SIS.
Gnanou Yves
More Arvind Sudhakar
Rachid Matmour
Wadgaonkar Prakash Purushottam
Council Of Scientific & Industrial Research
Norton Rose Canada S.e.n.c.r.l.,s.r.l./llp
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