POLYCARBONATES EXHIBITING IMPROVED HEAT RESISTANCE

Linear thermoplastic polycarbonates derived from: (i) a carbonate precursor; and (ii) at least one dihydric phenol represented by the general formula wherein R is independently selected from hydrogen and lower alkyl radicals, R is independently selected from halogen radicals X is selected from monoc...

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Bibliographische Detailangaben
Hauptverfasser:	HEDGES, CHARLES VERNON, MARK, VICTOR
Format:	Patent
Sprache:	eng
Schlagworte:	ACYCLIC OR CARBOCYCLIC COMPOUNDS CHEMISTRY COMPOSITIONS BASED THEREON COMPOSITIONS OF MACROMOLECULAR COMPOUNDS MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONSONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS METALLURGY ORGANIC CHEMISTRY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP
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Beschreibung
Zusammenfassung:	Linear thermoplastic polycarbonates derived from: (i) a carbonate precursor; and (ii) at least one dihydric phenol represented by the general formula wherein R is independently selected from hydrogen and lower alkyl radicals, R is independently selected from halogen radicals X is selected from monocyclic cycloalkylidene radicals containing from 8 to about 16 ring carbon atoms, and n and n min are independently selected from whole numbers having a value of from 0 to 2 inclusive, with the proviso that the sum of n plus n min is at least one.