Lithium reduction in styrenic polymers

Details Lithium reduction in styrenic polymers Lithium reduction in styrenic polymers

C - Chemistry, Metallurgy

08

F

C08F 6/02 (2006.01)

Patent

CA 2659058

This invention provides a process which comprises heating a lithium-containing mixture to one or more temperatures of at least about 90 ° C and at one or more pressures sufficient to maintain substantially the entire mixture in the liquid phase. The lithium- containing mixture which comprises water, lithium ions, at least one liquid saturated hydrocarbon, and at least one styrenic polymer formed by anionic polymerization. The amount of water is at least about 10 wt% relative to the weight of the styrenic polymer, and the styrenic polymer has a weight average molecular weight of at least about 1000.

L'invention concerne un procédé comprenant le chauffage d'un mélange contenant du lithium à une ou plusieurs températures d'au moins environ 90°C et à une ou plusieurs pressions suffisantes pour maintenir sensiblement le mélange entier en phase liquide. Le mélange contenant du lithium comprend de l'eau, des ions lithium, au moins un hydrocarbure saturé liquide, et au moins un polymère styrénique formé par polymérisation anionique. La quantité d'eau est d'au moins environ 10 % en poids par rapport au poids du polymère styrénique, et le polymère styrénique a une masse moléculaire moyenne en poids d'au moins environ 1000.

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