Initiating system comprising an heterocyclic ligand for the...

C - Chemistry – Metallurgy – 08 – F

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C08F 4/48 (2006.01) C08F 4/46 (2006.01) C08F 4/58 (2006.01) C08F 20/10 (2006.01) C08F 20/12 (2006.01)

Patent

CA 2232565

Initiating system comprising an initiator, excluding alkaline metal amides, and at least one alkaline metal alcoholate of the formula ROM wherein M is an alkaline metal, R is a group Q-R1-(OR2-)m in which Q is a heterocycle with 5 or 6 substituted or unsubstituted chains having 1 or 2 oxygen atoms as heteroatoms, R1 and R2 represent a linear or branched alkylene group with C1-C4 and m is equal to 0, 1, 2 or 3. This initiating system can be used in the preparation of (meth)acrylic (co)polymers and, possibly, monomers containing ethylenic unsaturation(s) copolymerizable with (meth)acrylic monomers.

Système d'amorçage comprenant au moins un amorceur, à l'exception des amidures de métal alcalin, et au moins un alcoolate de métal alcalin de formule ROM dans laquelle M est un métal alcalin, R représente un groupe Q-R1-(OR2-)m dans lequel Q est une hétérocycle à 5 ou 6 chaînons substitué ou non ayant 1 ou 2 atomes d'oxygène comme hétéroatomes, R1 et R2 représentent un groupe alkylène linéaire ou ramifié en C1-C4 et m est égal à 0, 1, 2 ou 3. Ce système d'amorçage est utilisable dans la préparation de (co)polymères (méth)acryliques et, éventuellement, de monomères à insaturation(s) éthylénique(s) copolymérisables avec les monomères (méth)acryliques.

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