Continuous production of polycarbonate-polyether copolymers

Details Continuous production of polycarbonate-polyether copolymers Continuous production of polycarbonate-polyether copolymers

C - Chemistry, Metallurgy

08

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C08G 63/64 (2006.01) B01J 19/18 (2006.01) C08G 64/18 (2006.01) C08G 64/22 (2006.01)

Patent

CA 1178397

A3GW31906 A b s t r a c t Continuous production of polycarbonate polyether copolymers by condensation of a bisphenol-A-polyalkylene glycol solution and a pyridine solution with a phosgene solution, the excess of phosgene being less than 10 % by weight and the feeding pipes ending at a certain distance from each other above the surface of the liquid.

357941

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