C - Chemistry – Metallurgy – 08 – F
Patent
C - Chemistry, Metallurgy
08
F
C08F 4/58 (2006.01) C08F 4/46 (2006.01) C08F 4/48 (2006.01) C08F 20/10 (2006.01) C08F 20/12 (2006.01)
Patent
CA 2232576
Initiating system which comprises (1) at least one silylated initiator and (2) at least one alkaline metal alcoholate as ligand. The silylated initiator may be monofunctional, selected from among compounds of the formula (I) or bifunctional, selected from among compounds of the formula (II): Image Image wherein R1, R2, R3 are independently a linear or branched alkyl radical with C1-C8; R4 is a linear or branched alkylene radical with C1-C8; M is an alkaline metal or alkaline earth metal (valence of 1 or 2); R5 and R6 are independently a linear or branched alkyl radical with C1-C8; R7, R8 are independently a linear or branched alkylene radical with C1-C8; M' is an alkaline metal. This system can be used in the preparation of (meth)acrylic (co)polymers.
Un système d'amorçage qui comprend (1) au moins un amorceur silylé et (2) au moins un alcoolate de métal alcalin comme ligand. L'amorceur silylé peut être monofonctionnel et choisi notamment parmi les composés de formule (I) ou bifonctionnel et choisi notamment parmi les composés de formule (II): Image Image dans lesquels R1, R2, R3 représentent, chancun, indépendamment, un radical alkyle, linéaire ou ramifié, en C1-C8; R4 est un radical alkylène linéaire ou ramifié en C1-C8; M est un métal alcalin ou alcalino-terreux (valence q de 1 ou 2); R5 et R6 représentent, chacun, indépendamment, un radical alkyle, linéaire ou ramifié, en C1-C8; R7, R8 représentent, chacun, indépendamment, un radical alkylène, linéaire ou ramifié, en C1-C8; M' est un métal alcalin. Ce système est utilisable pour la préparation de (co)polymères(méth)acryliques.
Jerome Robert
Maurer Andreas R.
Muller Axel H.e.
Navarro Christophe
Zundel Thomas
Elf Atochem S.a.
Robic
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