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AssigneeGeneral Electric Company
InventorsJohn Morgan Whitney, Hans-Peter Brack, Theodorus Lambertus Hoeks, Irene Dris, Dennis Karlik
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A method for end-capping polycarbonate resins, comprising the step of processing a mixture comprising a polycarbonate having free hydroxyl-end groups and an end-capping reagent in a melt transesterification reaction to produce a polycarbonate resin, wherein the end-capping reagent comprises a mixture of: (a) at least one species of a symmetrical activated aromatic carbonate, and (b) at least one species of an optionally-substituted phenol, whereby said end-capping reagent reacts with at least some of the free hydroxyl end-groups of the polycarbonate to produce an end-capped polycarbonate resin.
A method for preparing an end-capped polycarbonate resin, comprising the step of processing a mixture comprising a polycarbonate having free hydroxyl-end groups and an end-capping reagent in a melt transesterification reaction to produce a polycarbonate resin, wherein the end-capping reagent comprises a mixture of:
An end-capping reagent consisting essentially of a mixture of:
Dependencies are inferred from the claim text.