Termination of anionic polymerization

Details Termination of anionic polymerization Termination of anionic polymerization

C - Chemistry, Metallurgy

08

F

C08F 2/42 (2006.01) C08C 19/44 (2006.01)

Patent

CA 2080595

This is an improvement upon a process which comprises anionically polymerizing monomers with an anionic polymerization initiator in a suitable solvent thereby creating a living polymer. The improvement comprises terminating the polymerization by the addition of a terminating agent selected from the group consisting of hydrogen or its isotopes, boranes, ammonia, halogens hydrocarbons containing a C-H group where the carbon is connected directly to a triply-bound carbon or to two doubly-bound carbons and silanes.

On apporte une amélioration à un procédé qui comprend la polymérisation anionique de monomères avec un initiateur de polymérisation anionique dans un solvant approprié, ce qui crée un polymère vivant. L'amélioration comprend la terminaison de la polymérisation par l'addition d'un agent de terminaison sélectionné à partir du groupe constitué par de l'hydrogène ou ses isotopes, des boranes, de l'ammoniac, des halogènes, des hydrocarbures contenant un groupe C-H dans lequel le carbone est relié directement à un carbone à liaison triple ou à deux carbones à liaison double et des silanes.

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