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US 8,273,849 B2Granted
Isosorbide-based polycarbonates, method of making, and articles formed therefrom
AssigneeSabic Innovative Plastics IP B.V.
InventorsJan Henk Kamps, Bernardus Jansen, Hans-Peter Brack
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Abstract
Disclosed herein is a polycarbonate polymer comprising: an isosorbide unit, and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit and aliphatic unit are each carbonate, or a combination of carbonate and ester units and the aliphatic unit is derived from an aliphatic oligomer having a molecular weight of 900 to 4000.
Claims21
A polycarbonate polymer comprising:
- an isosorbide unit and an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit and aliphatic unit are each carbonate, or a combination of carbonate and ester units and the aliphatic unit is derived from an aliphatic oligomer having a weight average molecular weight of 900 to 4000, wherein the polycarbonate polymer has a glass transition temperature of 142 to 170° C.
A polycarbonate polymer comprising:
- 50 to 92 weight percent of an isosorbide unit and 5 to 35 weight percent of an aliphatic unit different from the isosorbide unit, wherein the isosorbide unit and aliphatic unit are each carbonate, or a combination of carbonate and ester units, the aliphatic unit is derived from an aliphatic oligomer having a weight average molecular weight of 900 to 4000 and weight percent is based on the total weight of diol and diacid used to make the polycarbonate, wherein the polycarbonate polymer has a glass transition temperature of 142 to 170° C.
Dependencies are inferred from the claim text.