Process for stabilizing organophosphorus compounds

Details Process for stabilizing organophosphorus compounds Process for stabilizing organophosphorus compounds

C - Chemistry, Metallurgy

07

F

C07F 9/547 (2006.01) C07F 9/02 (2006.01) C07F 9/46 (2006.01) C07F 9/48 (2006.01)

Patent

CA 2089463

Organophosphorus compounds are stabilized against decomposition during and after recovery from their synthesis reaction mixtures by the addition to the synthesis reaction mixture of at least 0.5% by weight of an acid scavenger, based on the weight of the organophosphorus compound, before allowing the organophosphorus compound to crystallize. The invention is of particular value in the stabilization of 2,2'-alkylidene- bis(dialkylphenyl)fluorophosphites, such as 2,2'-ethylidenebis(4,6-di-t- butylphenyl)fluo- rophosphite, which is rendered more suitable for use as a stabilizer for organic polymers, e.g., polycarbonates, by the practice of the invention.

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