Process for preparing polycarbonates using substituted pyridine catalysts
AssigneeGeneral Electric Company
InventorsDonald B. G. Jaquiss, Victor Mark, Lawrence C. Mitchell
Life of this patent
Estimating the term…
Abstract
An interfacial polymerization process for preparing a high molecular weight aromatic carbonate polymer by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a substituted pyridine or a salt of a substituted pyridine.
Claims7
An interfacial polymerization process for preparing high molecular weight polycarbonates which comprises reacting, under interfacial polycarbonate-forming conditions, a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of a compound selected from the group consisting of substituted pyridines and substituted pyridine salts, said catalytic amount is present from about 0.01 to about 10 weight percent based on the weight of said dihydric phenol.
Dependencies are inferred from the claim text.