Process for preparing polycarbonate using cyclic di- or triamine catalyst
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 cyclic di- or triamines or salts of cyclic di- or triamines.
Claims16
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 catalyst selected from the group consisting of, cyclic triamines, and salts of cyclic triamines.
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 cyclic diamine catalyst of the formulae represented below, or its salt ##STR15## wherein R and R.sup.1 are independently selected from the group consisting of alkyl, substituted alkyl, alkenyl, substituted alkenyl, cycloalkyl, substituted cycloalkyl, aralkyl, aminoalkyl, aminocycloalkyl, aminoaralkyl, alkylaminoalkyl, alkylaminocycloalkyl, alkylaminoaralkyl, dialkylaminoalkyl, dialkylaminocycloalkyl and dialkylaminoaralkyl radicals;
- and W and W.sup.1 are independently selected from the group consisting of divalent saturated aliphatic hydrocarbon radicals and divalent saturated cycloaliphatic hydrocarbon radicals.
Dependencies are inferred from the claim text.