Isosorbide-based polycarbonates, method of making, and articles formed therefrom
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United States of America Patent
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Sep 25, 2012
Grant Date -
Jun 30, 2011
app pub date -
Sep 29, 2010
filing date -
Dec 30, 2009
priority date (Note) -
Expired
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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.
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