Process for preparing polycarbonate using non-cyclic polyamine catalysts
AssigneeGeneral Electric Company
InventorVictor Mark
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Abstract
An interfacial polymerization process for preparing high molecular weight aromatic polycarbonates by reacting a dihydric phenol with a carbonate precursor in the presence of a catalytic amount of certain non-cyclic polyamines or salts of non-cyclic polyamines.
Claims14
An interfacial polymerization process for preparing high molecular weight aromatic 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 non-cyclic polyamine of the formula ##STR6## and its acid addition salts, or a non-cyclic polyamine of the formula ##STR7## and its acid addition salts wherein n is an integer equal to 3-p;
- p is an integer having a value from 1 to 3, inclusive;
- m is an integer having a value from 1 to 3, inclusive;
- R, R.sup.1 and R.sup.2 are independently selected from the group consisting of hydrogen, alkyl, substituted alkyl, alkenyl, substituted alkenyl, cycloalkyl, substituted cycloalkyl, and aralkyl radicals;
- W is selected from the group consisting of divalent aliphatic and cycloaliphatic radicals;
- and X is a 5 to 6 membered nitrogen-containing heterocyclic radical selected from the group consisting of pyrrole, mono to tetra C.sub.1 to C.sub.5 alkyl substituted pyrrole, pyridine, and mono to tetra C.sub.1 to C.sub.5 alkyl substituted pyridine radicals.
Dependencies are inferred from the claim text.